Folding and pressing mechanism, packing apparatus

Abstract

The application discloses a folding and pressing mechanism and a packing device, and relates to the technical field of packaging. The folding and pressing mechanism is used for folding and pressing the first side, the second side, the third side and the fourth side of the end of a sheet roll structure. The folding and pressing mechanism comprises a first folding and pressing assembly, a second folding and pressing assembly, a third folding and pressing assembly and a fourth folding and pressing assembly. The first folding and pressing assembly is used for folding and pressing the first side of the end of the sheet roll structure to form a first folding ear. The second folding and pressing assembly is used for pressing the second side to form a second folding ear. The second folding and pressing assembly has a movement path that moves to cover the first folding ear. The second folding and pressing assembly has a movement path that moves to cover the first folding ear, so that the second folding and pressing assembly can cover the first folding ear when the first folding and pressing assembly is returned first, the rebound range of the first folding ear is reduced, the risk that the first folding ear is bent or protruded towards the block-shaped object and presses the block-shaped object is reduced, and the damage of the folding and pressing mechanism to the block-shaped object, such as books, packaging boxes containing electronic devices and the like, is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the packaging technical field, in particular to a folding and pressing mechanism and a packing device. BACKGROUND

[0002] At present, the packing operation of block-shaped objects such as books, packaging boxes containing electronic devices, etc. is usually to first wrap the block-shaped objects with packaging tape, film, paper or put them into a box to form independent small packages, and then use a packing machine to wrap the independent small packages or the block-shaped objects such as books, packaging boxes containing electronic devices, etc. with sheet-shaped objects such as kraft paper to form large packages.

[0003] After the block-shaped objects such as books, packaging boxes containing electronic devices, etc. are disassembled after the above-mentioned packaging process from small packages to large packages, the left and right ends of the block-shaped objects may be damaged, such as concave pits and bruises, which may cause damage to the books, packaging boxes containing electronic devices, etc. SUMMARY

[0004] The main purpose of the present application is to provide a sheet roll folding and pressing mechanism to reduce the damage to the block-shaped objects such as books, packaging boxes containing electronic devices, etc.

[0005] For the damage such as concave pits and bruises at the left and right ends of the block-shaped objects such as books, packaging boxes containing electronic devices, etc., the researchers of the present application have tried to improve the flatness of the sheet-shaped objects such as kraft paper and to prevent foreign objects from entering the sheet roll structure, but the damage such as concave pits and bruises still cannot be effectively reduced. The researchers of the present application have found that, during the above-mentioned packaging process from small packages to large packages, the side edge folding and pressing mechanism of the folding and pressing side is usually arranged closer to the side end of the block-shaped object in the sheet roll structure to avoid the end of the sheet roll structure from not being close enough to the block-shaped object. However, the ears formed by folding and pressing the ends of the sheet roll structure may rebound to some extent, and the side edge folding and pressing mechanism closer to the side end of the block-shaped object may abut against the end of the rebounded ears, which may cause the end of the ears and other positions to bend or protrude towards the block-shaped object. These bends or protrusions may press against the block-shaped object, and even move with the side edge folding and pressing mechanism, which may cause the side end of the block-shaped object to be damaged, such as concave pits and bruises.

[0006] To achieve the above object, the folding and pressing mechanism is used for folding and pressing the end of a sheet roll structure wrapped with a block, the end of the sheet roll structure comprises a first side, a second side, a third side and a fourth side arranged in a circumferential direction, the first side is arranged opposite to the second side, the third side is arranged opposite to the fourth side, the folding and pressing mechanism comprises a first folding and pressing assembly, a second folding and pressing assembly, a third folding and pressing assembly and a fourth folding and pressing assembly, the first folding and pressing assembly is used for folding and pressing the first side to form a first fold ear, the second folding and pressing assembly is used for pressing the second side to form a second fold ear, the second folding and pressing assembly has a movement path moving to cover the first fold ear; the third folding and pressing assembly is used for folding and pressing the third side to form a third fold ear, and the fourth folding and pressing assembly is used for folding and pressing the fourth side to form a fourth fold ear.

[0007] Optionally, the first folding and pressing assembly is arranged on the front side of the conveying direction of the sheet roll structure; the folding and pressing mechanism further comprises an abutting plate, the abutting plate is arranged to extend along the conveying direction of the sheet roll structure, the abutting plate is arranged on the front side of the first folding and pressing assembly, and the abutting plate is used for abutting the end of the sheet roll structure after folding and pressing; the first folding and pressing assembly comprises a side folding and pressing plate swinging around the up-down direction, and the side folding and pressing plate is used for folding and pressing the end of the sheet roll structure. After folding and pressing, the sheet roll structure may still rebound during the process of transferring to the bundling or gluing station. The abutting plate can reduce the possibility of rebounding of the sheet roll structure after folding and pressing during the process of transferring to the bundling or gluing station, further reduce the risk of bending or protruding of the fold ear, and further reduce the damage of the folding and pressing mechanism to the block such as books and packaging boxes containing electronic devices. The first folding and pressing assembly comprises a side folding and pressing plate swinging around the up-down direction, and the abutting plate is arranged on the front side of the first folding and pressing assembly, so that the abutting plate can be closer to the side folding and pressing plate in the conveying direction, and the possibility of rebounding of the fold ear is further reduced.

[0008] Optionally, the folding and pressing mechanism further comprises up-down driving devices, the up-down driving devices are used for moving the third folding and pressing assembly and the fourth folding and pressing assembly towards each other along the up-down direction; the second folding and pressing assembly is arranged on the rear side of the conveying direction of the sheet roll structure, the second folding and pressing assembly comprises a front extension plate assembly, and the front extension plate assembly is arranged to extend along the conveying direction of the sheet roll structure; the folding and pressing mechanism further comprises front extension driving devices, and the front extension driving devices are used for moving the front extension plate assembly forward to fold and press the sheet roll structure. The second folding and pressing assembly is arranged on the rear side of the conveying direction of the sheet roll structure, the front extension plate assembly moves forward to fold and press the sheet roll structure, so that the second folding and pressing assembly can reset and exit along the original path after the third folding and pressing assembly and the fourth folding and pressing assembly fold and press, the upsurge space occupied by the second folding and pressing assembly is reduced, and the third fold ear and the fourth fold ear can be closer to the block.

[0009] Optionally, the front plate assembly comprises a first front plate and a second front plate arranged side by side, the first front plate and the second front plate are respectively used for folding and pressing two ends of the sheet roll structure, and the folding and pressing mechanism further comprises a transverse driving device, the transverse driving device drives the first front plate and the second front plate to move towards each other in the transverse direction. The transverse driving device drives the first front plate and the second front plate to move towards each other in the transverse direction, so that the front plate assembly can better adapt to the actual width of the block-shaped body after the sheet-shaped body is included or can better use block-shaped bodies of different widths, improve the adaptability of the folding and pressing mechanism to different widths, and make the sheet-shaped body more closely adhere to the side surface of the block-shaped body.

[0010] Optionally, the transverse driving device comprises a rotating shaft and a guide rod arranged side by side, the rotating shaft comprises a left spiral segment and a right spiral segment; the transverse driving device further comprises a first connecting piece and a second connecting piece, the first front plate is fixedly connected with the first connecting piece, and the second front plate is fixedly connected with the second connecting piece; the first connecting piece comprises a first through hole sleeved on the guide rod and a first spiral hole connected with the left spiral segment, and the second connecting piece comprises a second through hole sleeved on the guide rod and a second spiral hole connected with the right spiral segment; the folding and pressing mechanism further comprises an up-down guide rail arranged in an up-down direction, the third folding and pressing assembly comprises a first folding and pressing piece in sliding connection with the up-down guide rail, and the fourth folding and pressing assembly comprises a second folding and pressing piece in sliding connection with the up-down guide rail; and the side folding and pressing plate is hinged to the abutting plate. The rotating shaft comprising the left spiral segment and the right spiral segment improves the efficiency of the transverse driving device driving the first front plate and the second front plate to move towards each other in the transverse direction, and improves the response efficiency of the folding and pressing mechanism.

[0011] The application further provides a packing device comprising the folding and pressing mechanism.

[0012] Optionally, the packing device further comprises a sheet conveying mechanism for outputting the sheet-shaped body, an input mechanism for inputting the block-shaped body, and a wrapping mechanism for wrapping the sheet-shaped body around the block-shaped body to form the sheet roll structure, a tail end of the input mechanism is arranged above a tail end of the sheet conveying mechanism, and a tail end of the input mechanism is arranged in alignment with a tail end of the sheet conveying mechanism; the wrapping mechanism and the folding and pressing mechanism are sequentially arranged in front of the input mechanism in a conveying direction of the sheet roll structure, so that the overall structure of the packing device is more compact, and the overall packing efficiency of the packing device is improved.

[0013] Optionally, the last section of the sheet conveying mechanism gradually rises in the output direction of the sheet, the last section of the sheet conveying mechanism comprises an upper output layer and a lower output layer arranged in layers, an output gap for outputting the sheet is arranged between the upper output layer and the lower output layer, the end of the upper output layer is provided with at least one elastic sheet, and the elastic sheet is provided with an abutting portion for abutting against the sheet; the lower output layer comprises a conveying belt, and the upper output layer is provided with a rotating wheel for abutting against the sheet; the sheet conveying mechanism further comprises a unwinding assembly and a cutting assembly, the unwinding assembly comprises a mechanical expanding shaft, and the mechanical expanding shaft is used for sleeving the barrel core of a sheet roll barrel; the sheet conveying mechanism further comprises a drum brake arranged at the end of the mechanical expanding shaft, and the drum brake is used for adjusting the rotation flexibility of the mechanical expanding shaft; the cutting assembly comprises a first clamping roller and a second clamping roller arranged side by side, and a sheet gap is arranged between the first clamping roller and the second clamping roller; the first clamping roller is provided as a knurled roller, the side surface of the second clamping roller is covered with an elastic layer, and the elastic layer is made of rubber cloth; the cutting assembly further comprises a cutting knife for cutting off the sheet. The last section of the sheet conveying mechanism gradually rises in the output direction of the sheet, further improving the compactness of the packaging equipment. The end of the upper output layer is provided with at least one elastic sheet, which can flatten the sheet, prevent the sheet from being tilted, and ensure that the sheet can smoothly enter the bottom of the block. The mechanical expanding shaft improves the installation stability of the sheet roll. The drum brake can adjust the rotation flexibility of the mechanical expanding shaft. The sheet gap arranged between the first clamping roller and the second clamping roller can ensure that the sheet can be smoothly output; the first clamping roller is provided as a knurled roller, the side surface of the second clamping roller is covered with an elastic layer, and the elastic layer is made of rubber cloth, which further ensures the output reliability of the sheet.

[0014] Optionally, the input mechanism comprises a first conveying assembly and a second conveying assembly arranged in sequence along the conveying direction of the block-shaped object, a deflection angle is provided between the conveying direction of the first conveying assembly and the conveying direction of the second conveying assembly; the input mechanism further comprises a baffle structure arranged at the front side of the first conveying assembly, and further comprises a front-back adjusting assembly for adjusting the front-back position of the baffle structure; the second conveying assembly is arranged above the last section of the sheet conveying mechanism, and the end of the second conveying assembly is arranged in alignment with the end of the sheet conveying mechanism; the first conveying assembly comprises at least two driving rollers arranged side by side, and the second conveying assembly comprises at least two follow-up shafts arranged side by side, the follow-up shafts being configured to rotate with the movement of the sheet-shaped object; the covering mechanism comprises a third conveying assembly, the first conveying assembly, the second conveying assembly and the third conveying assembly are connected in sequence along the conveying direction; the packaging device further comprises a pushing mechanism for pushing the block-shaped object from the first conveying assembly to the third conveying assembly, and the conveying length of the second conveying assembly is less than the preset width of the sheet roll structure. A deflection angle is provided between the conveying direction of the first conveying assembly and the conveying direction of the second conveying assembly, so that the baffle structure can block the block-shaped object on the first conveying assembly and avoid blocking the conveying direction of the second conveying assembly. The front-back adjusting assembly can adjust the position of the baffle structure, thereby adjusting the stacking width of the block-shaped object. The first conveying assembly, the second conveying assembly and the third conveying assembly are connected in sequence along the conveying direction, the second conveying assembly comprises at least two follow-up shafts arranged side by side, the conveying length of the second conveying assembly is less than the preset width of the sheet roll structure, and the frictional damage to the sheet-shaped object under the block-shaped object caused by the speed difference between the first conveying assembly and the third conveying assembly can be reduced.

[0015] Optionally, the covering mechanism comprises a third conveying assembly and a wrapping rod, the wrapping rod is arranged along the transverse direction of the third conveying assembly, the wrapping rod has an annular movement path arranged around the transverse direction of the third conveying assembly, so as to cover the sheet-shaped body above the block-shaped object; the annular movement path comprises an upper path segment arranged above the conveying surface of the third conveying assembly, when the wrapping rod moves in the upper path segment, the moving direction of the wrapping rod is the same as the preset conveying direction of the third conveying assembly, and the preset moving speed of the wrapping rod is greater than the conveying speed of the third conveying assembly; the covering mechanism further comprises an annular belt and a rotating driving device for driving the annular belt to rotate, the annular belt is arranged around the transverse direction of the third conveying assembly, and the end of the wrapping rod is fixedly connected with the annular belt; the covering mechanism further comprises a support body and an up-down adjusting assembly, the support body is used for supporting the upper side of the annular belt, and the up-down adjusting assembly is used for adjusting the height of the support body. When the wrapping rod moves in the upper path segment, the moving direction of the wrapping rod is the same as the preset conveying direction of the third conveying assembly, and the preset moving speed of the wrapping rod is greater than the conveying speed of the third conveying assembly, so that the wrapping rod is made to chase the block-shaped object from behind, thereby reducing the risk that the wrapping rod hinders the conveying of the block-shaped object and reducing the possibility that the conveying of the block-shaped object is blocked. The up-down adjusting assembly adjusts the height of the support body, so that the rod can adapt to more wrapping heights, and the application range of the covering mechanism is increased.

[0016] The technical scheme of the present application can realize the folding and pressing of the four sides of the end of the sheet roll structure through the first folding and pressing assembly, the second folding and pressing assembly, the third folding and pressing assembly and the fourth folding and pressing assembly. The first folding and pressing assembly is used for folding and pressing the first side to form a first folding lug. The second folding and pressing assembly has a movement path arranged to cover the first folding lug, so that the second folding and pressing assembly can cover the first folding lug before the first folding and pressing assembly returns, thereby reducing the rebound amplitude of the first folding lug, reducing the risk that the first folding lug bends or protrudes towards the block-shaped object, and reducing the damage of the folding and pressing mechanism to the block-shaped object such as books and packaging boxes containing electronic devices. Meanwhile, the folding and pressing mechanism allows the first folding and pressing assembly to return before the third folding and pressing assembly and the third folding and pressing assembly fold and press, thereby avoiding the simultaneous occupation of a large lateral thickness by the first folding and pressing assembly and the second folding and pressing assembly, allowing the third folding lug and the fourth folding lug to be closer to the block-shaped object, allowing the third folding lug and the fourth folding lug to better press the first folding lug and the second folding lug, reducing the possibility that the first folding lug and the second folding lug bend or protrude towards the block-shaped object, and further reducing the damage of the folding and pressing mechanism to the block-shaped object such as books and packaging boxes containing electronic devices. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only need to be some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor.

[0018] Figure 1 The structure schematic diagram of a folding and pressing mechanism embodiment of the present application.

[0019] Figure 2 The local structure schematic diagram of a folding and pressing mechanism embodiment of the present application.

[0020] Figure 3 The another local structure schematic diagram of a folding and pressing mechanism embodiment of the present application.

[0021] Figure 4 The structure schematic diagram of a packing device embodiment of the present application.

[0022] Figure 5 The structure schematic diagram of a film conveying mechanism in a packing device embodiment of the present application.

[0023] Figure 6 The structure schematic diagram of an input mechanism in a packing device embodiment of the present application.

[0024] Figure 7 The structure schematic diagram of a film covering mechanism in a packing device embodiment of the present application.

[0025] Figure 8 The structure schematic diagram of a pushing mechanism in a packing device embodiment of the present application.

[0026] Explanation of the reference signs:

[0027]

[0028]

[0029] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0031] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, motion condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications will also change accordingly.

[0032] In addition, if the embodiments of the present application involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can be explicitly or implicitly included at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection claimed by the present application.

[0033] For the damage such as pits and bruises on the left and right ends of the block-shaped object such as books, packaging boxes containing electronic devices, etc., the researchers of the present application still cannot better reduce the occurrence of pits and bruises by using the commonly used methods such as improving the flatness of the sheet-shaped body such as kraft paper, and improving the control of foreign matter to avoid foreign matter entering the sheet roll structure. The researchers of the present application found that during the packaging process of changing the small package into a large package, the side edge folding mechanism of the side edge folding is usually set closer to the side end of the block-shaped object in the sheet roll structure in order to avoid the end of the sheet roll structure not closely attached to the block-shaped object. However, the folded ear formed by folding the end of the sheet roll structure will rebound to a certain extent, and at this time, the side edge folding mechanism closer to the side end of the block-shaped object will abut to the end of the rebounded folded ear, causing the end of the folded ear and other positions to bend or protrude towards the block-shaped object. These bends or protrusions will squeeze the block-shaped object, and even move with the side edge folding mechanism, causing pits, bruises and other damages to occur on the side end of the block-shaped object.

[0034] After studying the phenomenon of pits, bruises and other damages on the side end of the block-shaped object, the present application proposes a folding mechanism.

[0035] Reference Figures 1 to 3In one embodiment of the present invention, the folding and pressing mechanism 1 is used to fold and press the end of a sheet roll structure containing a block. The end of the sheet roll structure includes a first side, a second side, a third side, and a fourth side arranged circumferentially. The first side and the second side are arranged opposite each other, such as front-to-back or top-to-bottom; the third side and the fourth side are arranged opposite each other, such as top-to-bottom or front-to-back. The folding and pressing mechanism 1 includes a first folding and pressing component, a second folding and pressing component, a third folding and pressing component, and a fourth folding and pressing component. The first folding and pressing component is used to fold the first side to form a first fold, the second folding and pressing component is used to press the second side to form a second fold, and the second folding and pressing component has a movement path to cover the first fold; the third folding and pressing component is used to fold the third side to form a third fold, and the fourth folding and pressing component is used to fold the fourth side to form a fourth fold. By providing the first folding and pressing component, the second folding and pressing component, the folding and pressing mechanism 1 can complete the folding and pressing of the four circumferential sides of the end of the sheet roll structure. The first folding component is used to fold the first side to form the first folded ear. The second folding component has a movement path to cover the first folded ear, so that the second folding component can cover the first folded ear after the first folding component returns to its original position. This reduces the rebound amplitude of the first folded ear and reduces the risk of the first folded ear bending or bulging towards the block and squeezing the block. This reduces the damage of the folding mechanism 1 to books, packaging boxes containing electronic devices, and other blocky objects. At the same time, the folding mechanism 1 allows the first folding component to return to its original position before the third folding component folds, avoiding the first and second folding components occupying a large lateral thickness at the same time. This allows the third and fourth folded ears to fit more tightly against the block, and allows the third and fourth folded ears to better press down on the first and second folded ears, reducing the possibility of the first and second folded ears bending or bulging towards the block. This further reduces the damage of the folding mechanism 1 to books, packaging boxes containing electronic devices, and other blocky objects.

[0036] Furthermore, such as Figure 1 As shown, the first folding assembly is configured to be located on the front side of the conveying direction of the roll structure, that is, located on... Figure 1 On the right side; the bending mechanism 1 also includes an abutment plate 11, which is configured to extend along the conveying direction of the roll structure, i.e., along Figure 1 It extends to the right from the center. The abutment plate 11 is located on the front side of the first folding assembly, that is... Figure 1 On the right side of the structure. The abutment plate 11 is used to abut the end of the folded roll structure; the first folding assembly includes a side folding plate 12 that swings about vertically, the side folding plate 12 being used to fold the end of the roll structure, specifically configured such that the side folding plate 12 is hinged to the abutment plate 11. More specifically, as... Figure 3As shown, the abutting plate 11 can be mounted on a fixed structure, which can be provided as a mechanism base plate to form a mounting base. The side folding pressing plate 12 is hinged to the fixed structure, i.e. an indirect form of hinge with the abutting plate 11. Further, an electric push rod, a gas cylinder, a rotary motor or the like is provided on the fixed structure to drive the side folding pressing plate 12 to swing around the up-down direction. Figure 3 In the embodiment, a gas cylinder is used to drive the side folding pressing plate 12 to rotate. After the folding and pressing of the sheet roll structure, the folded ears may still rebound during the transfer to the bundling or gluing station. The abutting plate 11 can reduce the possibility of the rebound of the folded and pressed sheet roll structure during the transfer to the bundling or gluing station, further reduce the risk of the bending or protrusion of the folded ears, and further reduce the damage of the folding and pressing mechanism 1 to the block-shaped objects such as books and packaging boxes containing electronic devices. The first folding and pressing assembly includes the side folding pressing plate 12 swinging around the up-down direction, and the abutting plate 11 is arranged on the front side of the first folding and pressing assembly, so that the abutting plate 11 can be closer to the side folding pressing plate 12 in the conveying direction, further reducing the possibility of the rebound of the folded ears.

[0037] Further, the folding and pressing mechanism 1 further includes up-down driving devices for moving the third folding and pressing assembly and the fourth folding and pressing assembly towards each other along the up-down direction. Specifically, the folding and pressing mechanism 1 further includes up-down guide rails 137 extending along the up-down direction, the third folding and pressing assembly includes first folding and pressing members 138 in sliding connection with the up-down guide rails 137, and the fourth folding and pressing assembly includes second folding and pressing members 139 in sliding connection with the up-down guide rails 137. The first folding and pressing members 138 and the second folding and pressing members 139 are driven by the up-down driving devices such as gas cylinders, electric push rods, gear racks and motors, worm gears and motors to perform up-down reciprocating movement to fold and press the end portion of the sheet roll structure. The up-down guide rails 137 can be mounted on the fixed structure by mounting vertical plates. The second folding and pressing assembly is arranged on the rear side of the conveying direction of the sheet roll structure, and includes a front extending plate assembly arranged to extend along the conveying direction of the sheet roll structure. The folding and pressing mechanism 1 further includes front extending driving devices for moving the front extending plate assembly forward to fold and press the sheet roll structure. The front extending driving devices can be provided as gas cylinders, electric push rods or the like. The second folding and pressing assembly is arranged on the rear side of the conveying direction of the sheet roll structure, and the front extending plate assembly is moved forward to fold and press the sheet roll structure, so that the second folding and pressing assembly can be reset and withdrawn along the original path after the third folding and pressing assembly and the fourth folding and pressing assembly fold and press, reducing the occupied space of the second folding and pressing assembly, and enabling the third folded ears and the fourth folded ears to be closer to the block-shaped objects.

[0038] Further, the front extension plate assembly comprises a first front extension plate 131 and a second front extension plate 132 arranged side by side, the first front extension plate 131 and the second front extension plate 132 are respectively used to fold and press the two ends of the sheet roll structure, and the folding and pressing mechanism 1 further comprises a transverse driving device, which drives the first front extension plate 131 and the second front extension plate 132 to move towards each other in the transverse direction. The transverse driving device drives the first front extension plate 131 and the second front extension plate 132 to move towards each other in the transverse direction, so that the front extension plate assembly can better adapt to the actual width of the block-shaped body after the sheet-shaped body is included or can better use block-shaped bodies of different widths, improve the applicability of the folding and pressing mechanism 1 to different widths, and make the sheet-shaped body more closely adhere to the side surface of the block-shaped body.

[0039] Further, the transverse driving device comprises a rotating shaft 133 and a guide rod 134 arranged side by side, and two guide rods 134 arranged side by side are arranged in the embodiment, and the two guide rods 134 are arranged on the two sides of the rotating shaft 133. The rotating shaft 133 comprises a left screw segment 1331 and a right screw segment 1332; the transverse driving device further comprises a first connecting piece 135 and a second connecting piece 136, the first front extension plate 131 is fixedly connected with the first connecting piece 135, and the second front extension plate 132 is fixedly connected with the second connecting piece 136; the first connecting piece 135 comprises a first through hole sleeved on the guide rod 134 and a first screw hole connected with the left screw segment 1331, and the second connecting piece 136 comprises a second through hole sleeved on the guide rod 134 and a second screw hole connected with the right screw segment 1332. The left screw segment 1331 and the first screw hole, and the right screw segment 1332 and the second screw hole can be in the form of a ball screw, or can be in the form of threaded connection of a thread and a nut. The rotating shaft 133 comprising the left screw segment 1331 and the right screw segment 1332 improves the efficiency of the transverse driving device in driving the first front extension plate 131 and the second front extension plate 132 to move towards each other in the transverse direction, and improves the response efficiency of the folding and pressing mechanism 1.

[0040] The application also provides a packing device comprising the folding and pressing mechanism 1. The specific structure of the folding and pressing mechanism 1 is referred to the above-mentioned embodiments. Since the packing device adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0041] Further, as shown in the drawings, Figure 1 The packing device further comprises a sheet conveying mechanism 2 for outputting the sheet-shaped body, an input mechanism 3 for inputting the block-shaped body, and a wrapping mechanism 4 for wrapping the sheet-shaped body around the block-shaped body to form a sheet roll structure, the last section of the input mechanism 3 is arranged above the last section of the sheet conveying mechanism 2, and the end of the input mechanism 3 is arranged in alignment with the end of the sheet conveying mechanism 2; the wrapping mechanism 4 and the folding and pressing mechanism 1 are sequentially arranged in front of the input mechanism 3 in the conveying direction of the sheet roll structure, so that the overall structure of the packing device is more compact, and the overall packaging efficiency of the packing device is improved.

[0042] Furthermore, the final section of the sheet conveying mechanism 2 gradually rises along the output direction of the sheet. The final section of the sheet conveying mechanism 2 includes an upper output layer 21 and a lower output layer 22 stacked together. An output gap for outputting the sheet is provided between the upper output layer 21 and the lower output layer 22. At least one spring piece 211 is provided at the end of the upper output layer 21. The spring piece 211 has an abutment portion for abutting the sheet. The lower output layer 22 includes a conveyor belt. The upper output layer 21 has a rotating wheel 212 for abutting the sheet. The sheet conveying mechanism 2 also includes an unwinding assembly and a cutting assembly. The unwinding assembly includes a mechanical expansion shaft 231, such as an air expansion shaft. The mechanical expansion shaft 231 is fitted inside the core of a sheet-like roll, specifically a roll of packaging paper. The sheet conveying mechanism 2 also includes a drum brake 232 located at the end of the mechanical expansion shaft 231, which is used to adjust the rotational flexibility of the mechanical expansion shaft 231. The cutting assembly includes a first clamping roller 241 and a second clamping roller 242 arranged side by side, with a clamping gap between the first clamping roller 241 and the second clamping roller 242, thereby forming a traction on the sheet-like material such as packaging paper, thus pulling the sheet-like material to be cut by the cutting blade. The first clamping roller is a knurled roller, and the side of the second clamping roller 242 is covered with an elastic layer made of rubber sheet. The cutting assembly also includes a cutting blade used to cut the sheet-like material. The end section of the sheet conveying mechanism 2 gradually rises along the output direction of the sheet-like material, further improving the structural compactness of the packaging equipment. At least one spring tab 211 is provided at the end of the upper output layer 21 to flatten the sheet material, prevent it from tilting upwards, and ensure that the sheet material can smoothly enter the bottom of the block. The mechanical expansion shaft 231 improves the installation stability of the sheet roll. The drum brake 232 can adjust the rotational flexibility of the mechanical expansion shaft 231. The clamping gap between the first clamping roller 241 and the second clamping roller 242 ensures that the sheet material can be output smoothly; the first clamping roller is a knurled roller, and the side of the second clamping roller 242 is covered with an elastic layer made of rubber cloth, both of which further ensure the reliability of the sheet material output.

[0043] Furthermore, the input mechanism 3 includes a first conveying component 31 and a second conveying component 32 arranged sequentially along the conveying direction of the block. A deflection angle is provided between the conveying direction of the first conveying component 31 and the conveying direction of the second conveying component 32. In this embodiment, the conveying direction of the first conveying component 31 is perpendicular to the conveying direction of the second conveying component 32. The input mechanism 3 also includes a baffle structure 33 disposed on the front side of the first conveying component 31. The input mechanism 3 further includes a front-rear adjustment component 34 for adjusting the front-rear position of the baffle structure 33. The front-rear adjustment component 34 can be adopted as follows: Figure 6The first conveying assembly 31 and the second conveying assembly 32 are arranged above the film feeding mechanism 2, and the end of the second conveying assembly 32 is aligned with the end of the film feeding mechanism 2. The first conveying assembly 31 includes at least two driven rollers 311 arranged side by side, which are driven by connecting to a power device. In this embodiment, the driven rollers 311 are driven by a belt. The second conveying assembly 32 includes at least two follow-up shafts 321 arranged side by side, which are not driven by connecting to a power device. The follow-up shafts 321 are configured to rotate with the movement of the sheet-shaped body. The wrapping mechanism 4 includes a third conveying assembly 41, and the first conveying assembly 31, the second conveying assembly 32, and the third conveying assembly 41 are sequentially connected in the conveying direction. The packaging device further includes a pushing mechanism 5, as shown in Figure 8 The power of the pushing action of the pushing mechanism 5 is a motor, and the pushing plate on the pushing mechanism 5 is connected to the nut of a ball screw through a connecting plate, so as to convert the rotary motion of the motor into linear motion. The pushing mechanism 5 is used to push the block-shaped object from the first conveying assembly 31 to the third conveying assembly 41. The conveying length of the second conveying assembly 32 is less than the preset width of the sheet roll structure. The conveying direction of the first conveying assembly 31 and the conveying direction of the second conveying assembly 32 are provided with a deflection angle, so that the baffle structure 33 can block the block-shaped object on the first conveying assembly 31 and avoid blocking the conveying direction of the second conveying assembly 32. The front and rear adjusting group can adjust the position of the baffle structure 33, so as to adjust the stacking width of the block-shaped object. The first conveying assembly 31, the second conveying assembly 32, and the third conveying assembly 41 are sequentially connected in the conveying direction. The second conveying assembly 32 includes at least two follow-up shafts 321 arranged side by side. The conveying length of the second conveying assembly 32 is less than the preset width of the sheet roll structure, which can reduce the friction damage to the sheet-shaped body under the block-shaped object caused by the speed difference between the first conveying assembly 31 and the third conveying assembly 41.

[0044] Further, as shown in Figure 7As shown, the covering mechanism 4 comprises a third conveying assembly 41 and a wrapping rod 42, the third conveying assembly 41 can be provided as a conveying belt. The wrapping rod 42 is provided along the transverse direction of the third conveying assembly 41, and has an annular movement path provided around the transverse direction of the third conveying assembly 41, so as to cover the sheet-shaped body above the block-shaped object; the annular movement path comprises an upper path segment provided above the conveying surface of the third conveying assembly 41, when the wrapping rod 42 moves in the upper path segment, the moving direction of the wrapping rod 42 is the same as the preset conveying direction of the third conveying assembly 41, and the preset moving speed of the wrapping rod 42 is greater than the conveying speed of the third conveying assembly 41; the covering mechanism 4 further comprises an annular belt 43 and a rotating driving device for driving the annular belt 43 to rotate, the annular belt 43 is provided around the transverse direction of the third conveying assembly 41, and the end of the wrapping rod 42 is fixedly connected with the annular belt 43; the covering mechanism further comprises a support body 44 and an up-down adjusting assembly 45, the support body 44 is used for supporting the upper side of the annular belt 43, and the up-down adjusting assembly 45 is used for adjusting the height of the support body 44, as shown in Figure 7 As shown, the gear drives the rack, and the rack drives the support body 44 to ascend and descend. When the wrapping rod 42 moves in the upper path segment, the moving direction of the wrapping rod 42 is the same as the preset conveying direction of the third conveying assembly 41, and the preset moving speed of the wrapping rod 42 is greater than the conveying speed of the third conveying assembly 41, by making the wrapping rod 42 chase the block-shaped object from behind, the risk that the wrapping rod 42 hinders the conveying of the block-shaped object is reduced, and the possibility that the block-shaped object conveying is blocked is reduced. The up-down adjusting assembly 45 adjusts the height of the support body 44, so that the rod can adapt to more wrapping heights, and the application range of the covering mechanism 4 is increased.

[0045] The above packaging device, when in use, transports or carries the block-shaped objects such as booklets to be packaged to the first conveying assembly 31 of the packaging device. The first conveying assembly 31 arranges the block-shaped objects of the booklets in an array form according to the production process requirements, that is, the height, width and length of the stack. While the first conveying assembly 31 is working, the sheet feeding mechanism 2 cuts the roll packaging paper according to the packaging requirements to obtain a single sheet of packaging paper, and then feeds the packaging paper to the sheet 211, where the packaging paper waits for the block-shaped objects such as booklets. The arranged booklets are pushed by the pushing mechanism 5 into the wrapping mechanism 4. While the booklets enter the third conveying assembly 41, the packaging paper is also fed to the third conveying assembly 41, and in this state, the packaging paper is placed at the bottom of the booklets and enters the third conveying assembly 41 together. After the third conveying assembly 41 runs for a certain period of time, the wrapping rod 42 acts to lift the remaining part of the tail of the packaging paper along the two sides of the loop-shaped belt 43, and the running speed of the wrapping rod 42 is greater than the speed of the third conveying assembly 41, including the simultaneous movement of the wrapping rod 42 and the third conveying assembly 41 and the movement of the wrapping rod 42 and the stop of the third conveying assembly 41. The wrapping rod 42 brings the tail of the packaging paper to the other end of the third conveying assembly 41, to the front end of the conveying direction; when the booklets pass by, the booklets press the tail of the packaging paper into the bottom. The booklets and the packaging paper continue to be fed into the folding mechanism 1, and at the entrance of the folding mechanism 1, the tail of the packaging paper is completely wrapped to the head of the packaging paper, completing the wrapping of the entire booklets and forming a half-wrapped state with both ends not sealed, that is, forming a sheet roll structure. The half-wrapped booklets stop on the conveying structure of the folding mechanism 1 at the position between the first front plate 131, the second front plate 132 and the side folding plate 12. Thereafter, the left and right side folding plates 12 fold the front side of the end of the sheet roll structure, and the first front plate 131 and the second front plate 132 symmetrically run to the width of the booklets (including a preset error value) in the transverse direction, and then move forward in the conveying direction to fold the rear side of the end of the sheet roll structure, and the first front plate 131 and the second front plate 132 are folded to the side of the booklets. It should be noted that before the first front plate 131 and the second front plate 132 are in place, the side folding plate 12 is reset. After the first front plate 131 and the second front plate 132 are in place, the first folding piece 138 and the second folding piece 139 act to fold the upper and lower sides of the end of the sheet roll structure to the side of the booklets, and at the same time, the front ear and the rear ear that have been folded are pressed. Then the entire book package continues to be conveyed to the holding abutting plate 11, which holds the packaging paper folded at both ends of the sheet roll structure, and is conveyed to the rear section for bundling or gluing.

[0046] The above description is only the preferred embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation made under the inventive concept of the present application, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present application.

Claims

1. A folding and pressing mechanism for folding and pressing an end portion of a sheet roll structure wrapped with a block, the end portion of the sheet roll structure including a first side, a second side, a third side, and a fourth side arranged in a circumferential direction, the first side being arranged opposite to the second side, and the third side being arranged opposite to the fourth side, characterized in that, The folding and pressing mechanism comprises a first folding and pressing assembly, a second folding and pressing assembly, a third folding and pressing assembly and a fourth folding and pressing assembly. The first folding and pressing assembly is configured to fold and press the first side to form a first folded ear, and is arranged at the front side of the conveying direction of the sheet roll structure. The first folding and pressing assembly comprises a side folding and pressing plate swinging in the up-down direction, which is configured to fold and press the end of the sheet roll structure. The folding and pressing mechanism further comprises an abutting plate arranged along the conveying direction of the sheet roll structure. The abutting plate is arranged at the front side of the first folding and pressing assembly and is hinged to the side folding and pressing plate. The abutting plate is configured to abut the end of the sheet roll structure after folding and pressing. The second folding and pressing assembly is configured to press the second side to form a second folded ear. The second folding and pressing assembly has a movement path moving to cover the first folded ear. The second folding and pressing assembly is arranged at the rear side of the conveying direction of the sheet roll structure. The second folding and pressing assembly comprises a front extension plate assembly arranged along the conveying direction of the sheet roll structure. The folding and pressing mechanism further comprises a front extension driving device configured to move the front extension plate assembly forward to fold and press the sheet roll structure. The front extension plate assembly comprises a first front extension plate and a second front extension plate arranged side by side. The first front extension plate and the second front extension plate are respectively configured to fold and press the two ends of the sheet roll structure. The folding and pressing mechanism further comprises a transverse driving device configured to move the first front extension plate and the second front extension plate along the transverse direction. The transverse driving device comprises a rotating shaft and a guide rod arranged side by side. The rotating shaft comprises a left helical segment and a right helical segment. The transverse driving device further comprises a first connecting piece and a second connecting piece. The first front extension plate is fixedly connected to the first connecting piece, and the second front extension plate is fixedly connected to the second connecting piece. The first connecting piece comprises a first through hole sleeved on the guide rod and a first helical hole connected to the left helical segment. The second connecting piece comprises a second through hole sleeved on the guide rod and a second helical hole connected to the right helical segment. The third folding and pressing assembly is configured to fold and press the third side to form a third folded ear, and the fourth folding and pressing assembly is configured to fold and press the fourth side to form a fourth folded ear. The second folding and pressing assembly is reset after the third folding and pressing assembly and the fourth folding and pressing assembly fold and press. The folding and pressing mechanism further comprises an up-down driving device and an up-down guide rail arranged along the up-down direction. The third folding and pressing assembly comprises a first folding and pressing piece slidingly connected to the up-down guide rail. The fourth folding and pressing assembly comprises a second folding and pressing piece slidingly connected to the up-down guide rail. The up-down driving device is configured to move the first folding and pressing piece and the second folding and pressing piece along the up-down direction.

2. A packing apparatus characterized by comprising: The folding and pressing mechanism as claimed in claim 1.

3. The packing apparatus of claim 2, wherein, The packing device further comprises a sheet conveying mechanism for outputting the sheet-shaped body, an input mechanism for inputting the block-shaped object, and a covering mechanism for covering the sheet-shaped body with the block-shaped object to form the sheet roll structure, the last section of the input mechanism is arranged above the last section of the sheet conveying mechanism, and the end of the input mechanism is arranged in alignment with the end of the sheet conveying mechanism; the covering mechanism and the folding and pressing mechanism are sequentially arranged in front of the input mechanism along the conveying direction of the sheet roll structure.

4. The packing apparatus of claim 3, wherein, The last section of the sheet conveying mechanism gradually rises along the output direction of the sheet-shaped body, the last section of the sheet conveying mechanism comprises a top output layer and a bottom output layer arranged in layers, an output gap for outputting the sheet-shaped body is arranged between the top output layer and the bottom output layer, at least one elastic sheet is arranged at the end of the top output layer, and the elastic sheet is provided with an abutting portion for abutting against the sheet-shaped body; the bottom output layer comprises a conveying belt, and the top output layer is provided with a rotating wheel for abutting against the sheet-shaped body; the sheet conveying mechanism further comprises a unwinding assembly and a cutting assembly, the unwinding assembly comprises a mechanical expanding shaft, and the mechanical expanding shaft is used for sleeving the barrel core of a sheet-shaped roll barrel; the sheet conveying mechanism further comprises a drum brake arranged at the end of the mechanical expanding shaft, and the drum brake is used for adjusting the rotation flexibility of the mechanical expanding shaft; the cutting assembly comprises a first clamping roller and a second clamping roller arranged side by side, and a clamping gap is arranged between the first clamping roller and the second clamping roller; the first clamping roller is arranged as a knurled roller, the side surface of the second clamping roller is covered with an elastic layer, and the elastic layer is made of rubber cloth; the cutting assembly further comprises a cutting knife for cutting off the sheet-shaped body.

5. The packing apparatus of claim 3, wherein, The input mechanism comprises a first conveying assembly and a second conveying assembly arranged in sequence along the conveying direction of the block-shaped object, and a deflection angle is arranged between the conveying direction of the first conveying assembly and the conveying direction of the second conveying assembly; the input mechanism further comprises a baffle structure arranged on the front side of the first conveying assembly, and further comprises a front-back adjusting assembly for adjusting the front-back position of the baffle structure; the second conveying assembly is arranged above the last section of the sheet conveying mechanism, and the end of the second conveying assembly is arranged in alignment with the end of the sheet conveying mechanism; the first conveying assembly comprises at least two driven rollers arranged side by side, and the second conveying assembly comprises at least two follow-up shafts arranged side by side, and the follow-up shafts are configured to rotate with the movement of the sheet-shaped body; the covering mechanism comprises a third conveying assembly, and the first conveying assembly, the second conveying assembly and the third conveying assembly are sequentially connected along the conveying direction; the packing device further comprises a pushing mechanism for pushing the block-shaped object from the first conveying assembly to the third conveying assembly, and the conveying length of the second conveying assembly is less than the preset width of the sheet roll structure.

6. The packing apparatus of claim 3, wherein, The covering mechanism comprises a third conveying assembly and a wrapping rod, the wrapping rod is arranged along the transverse direction of the third conveying assembly, the wrapping rod has an annular movement path arranged around the transverse direction of the third conveying assembly, so as to cover the sheet-shaped body above the block; the annular movement path comprises an upper path segment arranged above the conveying surface of the third conveying assembly, when the wrapping rod moves in the upper path segment, the moving direction of the wrapping rod is the same as the preset conveying direction of the third conveying assembly, and the preset moving speed of the wrapping rod is greater than the conveying speed of the third conveying assembly; the covering mechanism further comprises an annular belt and a rotating driving device for driving the annular belt to rotate, the annular belt is arranged around the transverse direction of the third conveying assembly, and the end of the wrapping rod is fixedly connected with the annular belt; the covering mechanism further comprises a supporting body and an up-down adjusting assembly, the supporting body is used for supporting the upper side of the annular belt, and the up-down adjusting assembly is used for adjusting the height of the supporting body.

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