A method for forming a concave surface with broken surface of honeycomb paperboard and a device for breaking the surface of honeycomb paperboard

Abstract

The present invention relates to the technical field of product protection, and specifically to a method for forming a concave surface with broken surface of a honeycomb paperboard. It is adopted to uniformly cut the face paper layer of the honeycomb paperboard corresponding to the product contour to form a number of supporting patches. Each supporting patch lacks the stress balance of the overall face paper layer, so that the broken surface area can be suitable for the concave formation by extrusion of the product punch. While retaining the structural strength of the supporting patch itself and the buffering and shock absorption for docking with the core paper layer, a broken surface device with a good broken surface effect is designed to facilitate the implementation of the method for forming a concave surface with broken surface. The structure of the present invention has higher strength, the supporting patches can effectively increase the overall strength, and the overall shock absorption effect is better. It is depressed according to the contour of the product docking end, and the corresponding honeycomb paper core layer on the depressed part is docked with the broken face paper layer to form a docking concave part for placing the product to carry out shock absorption protection for the product transportation, so that the honeycomb paperboard can be applicable to the packaging application scenarios of products with complex shapes, and greatly increases the application effect of the honeycomb paperboard.

Description

Technical Field

[0001] The present invention relates to the technical field of paper packaging structures for products, and specifically to a method for forming a concave surface with broken surfaces on a honeycomb paperboard and a device for breaking the surface of the honeycomb paperboard. Background Technique

[0002] A honeycomb paperboard is a lightweight and high-strength composite material formed by bonding two upper and lower facing papers with an adhesive to form a honeycomb-shaped paper core, which is a typical case of the application of human bionics research. The specific structure of the honeycomb paperboard generally includes two facing papers, and a core paper is arranged between the two facing papers as a sandwich layer. The honeycomb paperboard has outstanding compressive and bending resistance, so it is widely used in packaging, structural forming, etc.

[0003] However, the wide application of honeycomb paperboards has always faced huge obstacles: At present, during the transportation of various products, bumps caused by road conditions will cause the products to vibrate and collide and thus be damaged. Due to the irregular shapes of various products, the commonly used shock-absorbing method during transportation is to use butt-formed plastic foam, but the foam is a white pollutant and is not easily degradable, resulting in environmental pollution problems. To solve this problem, in the prior art, there is also a method of using a honeycomb paperboard in combination with honeycomb paper corner protectors and honeycomb paper support blocks to jointly fit and protect the products. However, for the current packaging situation of products with different specifications, a large number of paper corner protectors and paper support block products with different specifications need to be equipped for adaptation, and the overall protection effect is also not good, which makes the honeycomb paperboard mostly only used in the packaging of regular and square products, greatly reducing the application range of the honeycomb paperboard. Summary of the Invention

[0004] The purpose of the present invention is to provide a method for forming a concave surface with broken surfaces on a honeycomb paperboard and a device for breaking the surface of the honeycomb paperboard. By forming broken surface openings on the facing paper layer of the honeycomb paperboard to form multiple separated support surface pieces, it is convenient to form a concave cavity with a limit for docking the contour of the product, realizing the direct limit docking of the honeycomb paperboard with the product to achieve a shock-absorbing and damping effect, and setting a surface-breaking device for cooperating with the surface-breaking to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the first technical solution:

[0006] A method for forming a concave surface with broken surfaces on a honeycomb paperboard, first select the specification size of the honeycomb paperboard according to the end of the product to be docked, and set a product convex mold with the outer contour of the end of the product to be docked. Among them, the honeycomb paperboard includes a bottom paper layer, a core paper layer and a facing paper layer that are fixedly connected layer by layer; the method for forming a concave surface with broken surfaces includes the following steps:

[0007] S1 Surface breakage: Place the honeycomb cardboard flat and limited on the tabletop. Set a surface breakage device above the honeycomb cardboard and perform a surface breakage operation on the surface of the face paper layer vertically downward, so as to break the middle area of the face paper layer into the paper core layer in a way that forms several separated supporting surface patches; among them, each supporting surface patch remains connected to the internal core paper layer and combines to form a set shape that matches the contour of the end of the product to be docked.

[0008] S2 Concavity: Vertically press the product punch downward into the middle of the above-mentioned set shape in the packaging docking direction, driving the supporting surface patches and the core paper layer to deform and be fixed into shape, so that the upper face paper layer of the honeycomb cardboard forms an inward concave cavity with each supporting surface patch fitting the contour of the product punch.

[0009] As a preferred solution of the present invention, the surface breakage device is set to dock with the honeycomb cardboard in a physical extrusion and breakage manner.

[0010] As a preferred solution of the present invention, the product punch is directly prepared from the sampled product to be docked.

[0011] As a preferred solution of the present invention, the product punch is set as a hard contour model prepared by reverse molding the contour of the product to be docked.

[0012] As a preferred solution of the present invention, in the S1 surface breakage step, the surface breakage device is set in a two-way breakage manner according to the thickness dimension of the honeycomb cardboard and the selected surface breakage spacing of the surface breakage device, so that the supporting surface patches are divided into square blocks by the surface breakage device, and the set shape is set as a set of pixel blocks of the supporting surface patches offset outward from the contour shape of the end of the product to be docked.

[0013] The second technical solution adopted by the present invention is: A surface breakage device for honeycomb cardboard, which is used for the surface breakage step in the above-mentioned surface breakage and concavity forming method technical solution of honeycomb cardboard, includes a surface breakage knife group, an upper template, a lower template and a pressing plate. The upper end of the pressing plate is connected to an extrusion machine. The surface breakage knife group is provided with multiple knives in cooperation. Each knife cooperates with each other and the cutting edge is set to dock with the face paper layer of the honeycomb cardboard. The pressing plate, the upper template and the lower template are arranged in sequence from top to bottom. The end face of the upper template is provided with a slot for fixing each surface breakage knife group. The lower template is correspondingly provided with a guiding slot for the up and down movement of the surface breakage knife group. The guiding slot is arranged in butt joint with the slot. The upper ends of the knives of the surface breakage knife group are clamped and limited by the pressing plate and fixed on the upper part of the upper template. The upper template and the lower template are arranged parallel to each other, and several guide posts and return springs are arranged around.

[0014] As a preferred solution of the present invention, each of the knives is arranged parallel to each other, and the lower cutting edges are butted flush. The slot and the guiding slot are set as multiple long slots arranged at intervals, and the knives are arranged to butt through the long slots of the upper template and the lower template.

[0015] As a preferred embodiment of the present invention, the surface-breaking tool includes a vertical tool group and a horizontal tool group which are arranged crosswise, and the lengths of the tools in the vertical tool group and the tools in the horizontal tool group are set according to the outer edge contour shape of the end of the product to be docked with each other.

[0016] As a preferred embodiment of the present invention, the lower edge of the tool is set to be serrated.

[0017] As a preferred embodiment of the present invention, the opening of the long strip groove is set to 2-5 mm, and the distance between each long strip groove is set to 20-50 mm.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] In the surface-breaking and concave forming method of the present invention, the surface paper layer of the honeycomb paperboard corresponding to the product contour is evenly cut to form a plurality of supporting surface pieces. Each supporting surface piece lacks the overall stress balance of the surface paper layer, so that the surface-breaking area can be suitable for the convex die of the product to be extruded inwards. While retaining the structural strength of the supporting surface piece itself and the buffering and shock absorption of the butt joint core paper layer, a surface-breaking device with a good surface-breaking effect is designed to facilitate the implementation of the surface-breaking and concave forming method. The present invention has higher structural strength, the supporting surface pieces can effectively increase the overall strength, and the overall shock absorption effect is better. It is extruded and recessed according to the contour of the product docking end, and the honeycomb paper core layer corresponding to the recessed part is butt-jointed with the broken surface paper layer to form a butt-jointed recess for placing the product to shock-absorb and protect the product during transportation, so that the honeycomb paperboard can be applied to the packaging application scenarios of products with complex shapes, greatly increasing the application effect of the honeycomb paperboard. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the original structure of the honeycomb paperboard of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the honeycomb paperboard after the surface-breaking step of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the honeycomb paperboard after the concave step of the present invention.

[0023] Figure 4 It is a schematic diagram of the structure of the surface-breaking device of the present invention.

[0024] In the figure: surface paper layer 1, core paper layer 2, base paper layer 3, supporting surface piece 4, concave cavity 5, extruder 6, pressing plate 7, upper template 8, lower template 9, tool 10, guide post 11, return spring 12, connecting seat 13. Detailed Embodiments

[0025] The following will describe the technical solutions in the embodiments of the present invention clearly and completely in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant. Several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0029] Please refer to Figures 1 - 3 , an embodiment of the method for forming a concave surface with broken surface of a honeycomb paperboard provided by the present invention: The specific method is that in this embodiment, the honeycomb paperboard is used to package a bottle product with an arc-shaped curved surface, and the butt end of the bottle body is arranged as an irregular arc-shaped curved surface. Among them, a cuboid honeycomb paperboard with a thickness of 10 cm and a length and width of 100 cm is selected according to the product to be butted as needed, and the bottle product to be packaged is used to prepare a product convex mold by reverse molding the outer contour of the butt end of the product. The honeycomb paperboard includes a bottom paper layer 3, a core paper layer 2 and a face paper layer 1 which are fixedly connected layer by layer. After the above preparations are completed, specific steps for forming a concave surface with broken surface of the honeycomb paperboard are also required. Specifically, the method for forming a concave surface with broken surface includes the steps:

[0030] S1 Surface breaking: Place the honeycomb paperboard flat and limited on the tabletop. Set a surface-breaking device above the honeycomb paperboard and perform a surface-breaking operation on the surface of the face paper layer vertically downward, so as to break the middle area of the face paper layer into the paper core layer to form several separated supporting surface patches 4; each of the supporting surface patches 4 is connected to the internal core paper layer 2 and combined to form a set shape that matches the contour of the end of the product to be docked.

[0031] S2 Concave: Vertically press the product punch downward into the middle of the above-mentioned set shape in the packaging docking direction to drive the supporting surface patches and the core paper layer 2 to deform and be fixed into shape, so that the upper face paper layer of the honeycomb paperboard forms an inward concave cavity 5 with each supporting surface patch fitting the contour of the product punch.

[0032] Among them, the above-mentioned product punch can also be directly made from the sampled product to be docked. Since the bottle body product itself has a certain hardness, the product can be directly used as the pressing mold for concave forming. Just fix the product to the lower end of the press. In this embodiment, the product punch is set as a hard contour model prepared by reverse molding the contour of the product to be docked, specifically a cement mold. Because the overall structural strength of the cement mold is higher and the cost is low and it is easy to prepare.

[0033] Furthermore, the surface-breaking device is set in a physical extrusion and breaking mode for docking with the honeycomb paperboard. And in the S1 surface-breaking step, according to the thickness dimension of the honeycomb paperboard and the selected surface-breaking distance of the surface-breaking device in advance, the surface-breaking device is set in a two-way breaking mode so that the supporting surface patches are divided into square blocks by the surface-breaking device. Specifically, the number of this surface-breaking device is set to two. The surface-breaking device uses a surface-breaking knife group to break the surface of the honeycomb paperboard, and a vertical knife group and a horizontal knife group are respectively set. The specific method is to perform vertical surface-breaking on the honeycomb paperboard at the lower end of the surface-breaking device set by the vertical knife group, and then place it at the lower end of the surface-breaking device set by the horizontal knife group for horizontal surface-breaking. Thus, the two-side surface-breaking actions are combined with each other to make the supporting surface patches in a separated square shape state. The set shape is set as a set of pixel blocks of the supporting surface patches offset outward from the contour shape of the end of the product to be docked.

[0034] In addition, refer to Figure 4, an embodiment of the surface-breaking device for honeycomb paperboard provided by the present invention: specifically, a surface-breaking device for honeycomb paperboard, which is used for the surface-breaking step in the technical solution of the above-mentioned surface-breaking and concave-forming method for honeycomb paperboard, includes a surface-breaking knife group, an upper template 8, a lower template 9 and a pressing plate 7. The upper end of the pressing plate 7 is connected to an extruder 6. The surface-breaking knife group is provided with multiple knives 10. Each knife cooperates with each other and the cutting edges are arranged in butt joint with the face paper layer of the honeycomb paperboard. The pressing plate 7, the upper template 8 and the lower template 9 are arranged in sequence from top to bottom. The end face of the upper template is provided with slots for fixing each surface-breaking knife group. The lower template is correspondingly provided with guide slots for the up and down movement of the surface-breaking knife group. The guide slots are arranged in butt joint with the slots. The upper ends of the knives of the surface-breaking knife group are clamped and limited by the pressing plate and fixed on the upper part of the upper template. The upper template and the lower template are arranged parallel to each other, and several guide posts 11 and return springs 12 are arranged around. Among them, the pressing plate 7 and the extruder are connected and fixed through a connecting seat 13.

[0035] Further, each of the knives 10 is arranged parallel to each other, and the lower cutting edges are butted flush. The slots and the guide slots are arranged as a plurality of long slots spaced from each other. The knives are butted and arranged through the long slots of the upper template and the lower template.

[0036] Further, the surface-breaking knives include a vertical knife group and a horizontal knife group arranged crosswise. The lengths of the knives in the vertical knife group and the knives in the horizontal knife group are set according to the outer edge contour shape of the corresponding end of the product to be butted.

[0037] Further, the lower cutting edge of the knife is set to be serrated. The opening of the long slot is set to be 2-5 mm, and the distance between each long slot is set to be 20-50 mm.

[0038] The surface-breaking and concave-forming method of the present invention adopts uniform cutting on the face paper layer of the honeycomb paperboard corresponding to the product contour to form several supporting surface sheets. Each supporting surface sheet lacks the overall stress balance of the face paper layer, so that the surface-breaking area can be suitable for the convex mold extrusion and concave of the product. While retaining the structural strength of the supporting surface sheet itself and the buffering and shock absorption of the butt joint with the core paper layer, a surface-breaking device with a good surface-breaking effect is designed to facilitate the implementation of the surface-breaking and concave-forming method. The structure of the present invention has higher strength, the supporting surface sheets can effectively increase the overall strength, and the overall shock absorption effect is better. According to the contour of the product butt joint end, it is extruded and recessed. The honeycomb paper core layer corresponding to the recessed part is butted with the broken face paper layer to form a butt joint recess for placing the product to carry out shock absorption and protection for the product transportation, so that the honeycomb paperboard can be suitable for the packaging application scenarios of products with complex shapes, and greatly increases the application effect of the honeycomb paperboard.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for forming a concave surface with broken surface on a honeycomb paperboard, characterized in that: Pre-select the specification dimensions of the honeycomb paperboard according to the end of the product to be docked, and set the product punch according to the outer contour of the end of the product to be docked. The honeycomb paperboard includes a bottom paper layer, a core paper layer and a face paper layer fixedly connected layer by layer. The broken surface concave forming method includes the following steps: S1 Broken surface: Place the honeycomb paperboard flat and limited on the tabletop. Set a broken surface device above the honeycomb paperboard and perform a broken surface operation on the surface of the face paper layer vertically downward, so as to break the middle area of the face paper layer into the core paper layer to form several separated support patches. Each support patch is connected to the internal core paper layer and combines to form a set shape matching the contour of the end of the docked product; S2 Concave: Vertically press the product punch downward into the middle of the set shape in the packaging docking direction to drive the support patches and the core paper layer to deform and be fixedly formed, so that the upper face paper layer of the honeycomb paperboard forms an inward concave cavity by fitting the contour of the product punch with each support patch; The broken surface device is set by physically squeezing and breaking the honeycomb paperboard; In the S1 broken surface step, according to the thickness dimension of the honeycomb paperboard and the broken surface spacing of the selected broken surface device in advance, the broken surface device is set to a two-way broken opening method so that the support patches are divided into square blocks by the broken surface device, and the set shape is set to a set of pixel blocks of support patches offset outward from the contour shape of the end of the docked product.

2. The method for forming an indented surface with broken surface of a honeycomb cardboard according to claim 1, characterized in that: The product punch is directly prepared from the sampled product to be docked.

3. A method for forming an indented surface with broken surface on a honeycomb paperboard according to claim 1, characterized in that: The product punch is set as a hard contour model prepared by reverse molding the contour of the product to be docked.

4. A surface-breaking device for honeycomb paperboard, which is used for the surface-breaking step S1 of the surface-breaking and concave forming method of honeycomb paperboard described in any one of claims 1 to 3, and is characterized in that: It includes a broken surface knife group, an upper template, a lower template and a pressing plate. The upper end of the pressing plate is connected to an extruder. The broken surface knife group is provided with multiple knives in cooperation. Each knife cooperates with each other and the cutting edge is set to face the face paper layer of the honeycomb paperboard. The pressing plate, the upper template and the lower template are arranged in sequence from top to bottom. The end face of the upper template is provided with a slot for fixing each broken surface knife group. The lower template is correspondingly provided with a guide slot for the up and down movement of the broken surface knife group. The guide slot is arranged in butt joint with the slot. The upper ends of the knives of the broken surface knife group are clamped and limited by the pressing plate and fixed on the upper part of the upper template. The upper template and the lower template are arranged parallel to each other, and several guide posts and return springs are arranged around. Each of the knives is arranged parallel to each other, and the lower cutting edges are butted flush. The slot and the guide slot are set as multiple long slots arranged at intervals. The knives are arranged to pass through the long slots of the upper template and the lower template in butt joint. The broken surface knife group includes a vertical knife group and a horizontal knife group arranged crosswise. The lengths of the knives in the vertical knife group and the knives in the horizontal knife group are set according to the outer contour shape of the end of the product to be docked. The lower cutting edge of the knife is set to be serrated.

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