Honeycomb shockproof paper pad structure, processing method, and processing equipment

Abstract

As a honeycomb shock-absorbing paper pad structure, processing method, and processing device, the honeycomb shock-absorbing paper pad structure is composed of cross-sections of a group of paper strips (1) uniformly distributed and bonded to each other at intervals, and the cross-sections of the paper strips (1) are formed into a honeycomb structure, and a folding edge bending section (1-1) is installed at both upper and lower ends of the unbonded portion of the paper strip (1), and an intermediate bending section (1-2) is installed at the bonded portion of the paper strip (1). The forming method is implemented by the following steps. In step A1, the shrink cell-type shock-absorbing paper pad is stretched and expanded into a honeycomb shock-absorbing paper pad (3); in step A2, chamfering trimming is performed on the honeycomb shock-absorbing paper pad (3) while the tensile stress remains unchanged, so that both upper and lower ends of the stretched paper strip (1) are bent toward one side and deformed; In step A3, the honeycomb shock-absorbing paper pad (3) obtained in step A2 is fed to a pair of rollers to perform forming and rolling. The forming device includes a rack section (5), a scraping section, and a forming and rolling section. The scraping section includes a flexible upper scraper (2-1) and a flexible lower scraper (2-2), and the flexible upper scraper (2-1) and the flexible lower scraper (2-2) are fixed at an angle to the rack section (5), and the forming and rolling section includes a rigid forming roller pair (4-1).

Description

Technology Field

[0001] The present invention relates to packaging for articles, and in particular to a honeycomb shock-absorbing paper pad structure, a processing method, and a processing device. Background Technology

[0002] With the development of logistics, people have facilitated the movement of goods such as files and items through mail, utilizing the aforementioned packaging consumables in large quantities. The types of related goods are diverse, and honeycomb shock-absorbing paper pads are widely used, particularly for packaging the movement of fragile items.

[0003] In conventional technology, shock-absorbing materials are implemented as shock-absorbing packaging for transporting fragile goods using a type of foamed shock-reducing plate or block, bubble bags, and honeycomb shock-absorbing paper pads. However, the first and second types of shock-absorbing packaging are both bulky, non-eco-friendly, and present problems regarding the recycling and disposal of packaging waste. Honeycomb shock-absorbing paper pads only perform their shock-reducing function after being stretched; in conventional technology, this is done manually or mechanically. However, paper cell shock-absorbing pads restore to their original pre-stretch state due to their elasticity after stretching, under unrestricted conditions. This results in inconvenience during use. The problem to be solved

[0004] To solve the technical problem where a paper cell-type shock-absorbing pad returns to its original state before tensioning due to elasticity after tensioning, causing inconvenience in use, the present invention modifies the existing structure of the paper cell-type shock-absorbing pad using a molding method based on the existing structure of a conventional honeycomb shock-absorbing paper pad. This allows the paper cell-type shock-absorbing pad to maintain its molding after tensioning and molding, thereby preventing it from returning to its original state before tensioning. To solve the aforementioned problem, the present invention discloses a honeycomb shock-absorbing paper pad structure, a processing method, and a processing apparatus. means of solving the problem

[0005] The technical solution used to achieve the inventive purpose of the present invention is as follows.

[0006] As a honeycomb shock-absorbing paper pad structure, the shock-absorbing paper pad structure is composed of cross-sections of a group of paper strips uniformly distributed in a honeycomb structure and bonded to each other at intervals, and the group of paper strips forms an overall honeycomb cell structure when expanded.

[0007] Each paper strip includes an adhesive portion bonded to another paper strip and a non-adhesive portion not bonded to another paper strip, and at both upper and lower ends of the non-adhesive portion, a fold edge bending portion is installed that is folded toward one side in the thickness direction of the honeycomb shock-absorbing paper pad, and at the adhesive portion, an intermediate bending portion is installed that is bent toward one side in the thickness direction.

[0008] A method for forming a honeycomb shock-absorbing paper pad is achieved by tensioning and forming a shrink cell-type shock-absorbing paper pad composed of a group of parallel paper strips bonded to each other at intervals.

[0009] In step A1, the shrink cell-type shock-absorbing paper pad is stretched and expanded so that when expanded, the group of paper strips are bonded to each other at intervals, they form an overall honeycomb cell structure, thereby obtaining a honeycomb shock-absorbing paper pad.

[0010] In step A2, while the tensioned and expanded state from step A1 is maintained so that the tensile stress in the tension direction of the paper strip does not change, chamfer trimming is performed on the honeycomb shock-absorbing paper pad so that the upper and lower ends of the non-adhesive portion of the paper strip are prepared to have a tendency to bend toward one side in the thickness direction of the honeycomb shock-absorbing paper pad.

[0011] In step A3, the honeycomb shock-absorbing paper pad of step A2 is supplied to a pair of rollers having a design spacing such that its thickness direction is orthogonal to the rotation axis direction of a pair of rollers, and forming and rolling are performed, thereby forming a honeycomb shock-absorbing paper pad having a design thickness, a fold edge bending portion formed at both upper and lower ends of the non-adhesive portion that is bent toward one side of the thickness direction, and an intermediate bending portion formed at the adhesive portion that is bent toward one side of the thickness direction. Here, the design spacing is the distance between the outer circles of the roller pair, the design thickness is the thickness of the honeycomb shock-absorbing paper pad after the forming and rolling are completed, and the thickness before entering the roller pair in step A3 refers to the thickness immediately before entering the roller pair in the state where the honeycomb shock-absorbing paper pad has expanded through steps A1 and A2.

[0012] The design spacing for forming and rolling of the roller pair is such that the distance between the outer circles of the roller pair is less than or equal to 30 to 50% of the thickness of the honeycomb shockproof paper pad in its expanded state before it enters the roller pair.

[0013] A honeycomb shock-resistant paper pad forming device includes a rack portion supporting a transport path of the honeycomb shock-resistant paper pad, a scraping portion disposed on the transport path, and a forming and rolling portion disposed downstream of the scraping portion along the transport path.

[0014] The scraping portion includes a flexible upper scraper and a flexible lower scraper, and the flexible upper scraper and the flexible lower scraper are fixed at an angle to the rack portion, and the distance between the flexible upper scraper and the flexible lower scraper is smaller than the thickness of the honeycomb shock-resistant paper pad in an expanded state before it enters the scraping portion, so that the scraping portion performs a preparatory action of applying chamfer trimming to the honeycomb shock-resistant paper pad to induce the upper and lower ends of the paper strip to tend to bend toward one side.

[0015] The above forming and rolling portion includes a pair of rigid forming rollers, the pair of rigid forming rollers is fixed to the rack portion, and the distance between the outer circles of the pair of rigid forming rollers is less than or equal to 30-50% of the thickness of the honeycomb shock-resistant paper pad in an expanded state before it enters the pair of rigid forming rollers, so the pair of rigid forming rollers performs a final forming action to form a fold edge bending portion and an intermediate bending portion for the honeycomb shock-resistant paper pad that has passed through the scraping portion. Effects of the invention

[0016] The beneficial effects of the present invention are as follows.

[0017] The honeycomb shockproof paper pad structure has the advantages of being simple, non-deforming, and easy to use.

[0018] The molding method for the honeycomb shockproof paper pad is simple, and tensioning and molding are completed in a single step.

[0019] The honeycomb shockproof paper pad forming device has a simple structure and high efficiency.

[0020] The present invention will be described in detail below with reference to the drawings. Brief explanation of the drawing

[0021] Figure 1 is a schematic diagram of the structure of the honeycomb shock-resistant paper pad of the present invention. Figure 2 is a schematic cross-sectional view of the BB of Figure 1. Figure 3 is a partially enlarged schematic diagram of part C of Figure 2. Figure 4 is a partially enlarged schematic diagram of part D of Figure 1. Figure 5 is a schematic diagram of the structure of a paper strip among the honeycomb shock-resistant paper pad structures of the present invention. Fig. 6 is a left side view of Fig. 5. Fig. 7 is a bottom view of Fig. 5. FIG. 8 is a schematic diagram of the structure of the honeycomb shock-resistant paper pad molding device of the present invention. FIG. 9 is a schematic diagram of the structure of Example 1 of a flexible upper scraper and a flexible lower scraper. FIG. 10 is a schematic diagram of the structure of Example 2, a flexible upper scraper and a flexible lower scraper. Specific details for implementing the invention

[0022] The present invention will be described below with reference to the drawings.

[0023] As a honeycomb shockproof paper pad structure, the shockproof paper pad structure is composed of a group of paper strips (1) bonded together at intervals, and the group of paper strips (1) forms a honeycomb cell structure overall when expanded, and each paper strip (1) includes a bonded portion bonded to another paper strip (1) and a non-bonded portion not bonded to another paper strip (1), and a folded edge bending portion (1-1) is installed at both upper and lower ends of the non-bonded portion, which is folded toward one side in the thickness direction of the honeycomb shockproof paper pad, and an intermediate bending portion (1-2) is installed at the bonded portion, which is bent toward one side in the thickness direction.

[0024] Folding edge bending portions (1-1) are installed at both upper and lower ends of the non-adhesive portion of the paper strip (1), and intermediate bending portions (1-2) are installed at the adhesive portion of the paper strip (1). As a result, the expanded honeycomb cell structure is maintained without the paper strips (1) being restored to their original parallel approach position due to the elasticity of the paper strip (1), and at the same time, the shock reduction effect of the honeycomb shock-prevention paper pad (3) is increased. Here, the "folding edge bending portion (1-1)" refers to a portion that is folded toward one side in the thickness direction from the non-adhesive portion of the paper strip (1), and the "intermediate bending portion (1-2)" refers to a portion that is bent toward one side in the thickness direction from the adhesive portion where the two paper strips are bonded together. The positions and bending directions of both are clearly illustrated in FIG. 2 (BB cross-sectional view), FIG. 3 (enlarged view of C section), and FIG. 5 to 7.

[0025] A method for forming a honeycomb shock-absorbing paper pad is performed by stretching and forming a shrink cell-type shock-absorbing paper pad composed of a group of parallel paper strips bonded to each other at intervals, followed by the following steps.

[0026] In step A1, the shrink cell-type shock-absorbing paper pad is stretched and expanded so that when expanded, the group of paper strips are bonded to each other at intervals, they form an overall honeycomb cell structure, thereby obtaining a honeycomb shock-absorbing paper pad.

[0027] The purpose of Step A1 is to first tension it to an expanded state.

[0028] In step A2, while the tensioned and expanded state from step A1 is maintained so that the tensile stress in the tension direction of the paper strip—that is, the direction in which the shrink cell-type shock-resistant paper pad is tensioned and expanded into a honeycomb shape (left and right directions in Fig. 1)—does not change, chamfer trimming is performed on the honeycomb shock-resistant paper pad so that the upper and lower ends of the non-adhesive portion of the paper strip are prepared to have a tendency to bend toward one side of the thickness direction of the honeycomb shock-resistant paper pad.

[0029] The chamfering trimming of step A2 above serves to prepare for the final forming step of the next step A3 by ensuring that the honeycomb shock-absorbing paper pad is evenly maintained in a stretched and expanded state, while simultaneously causing the upper and lower ends of the non-adhesive portion of the paper strip to uniformly show a tendency to bend toward one side in the thickness direction. That is, step A2 is a preparatory step that imparts only a tendency for one-sided bending to the paper strip, and at this step, the final fold edge bending portion and the intermediate bending portion are not yet completed.

[0030] In step A3, the honeycomb shock-absorbing paper pad of step A2 is supplied to a pair of rollers having a design spacing such that its thickness direction is orthogonal to the rotation axis direction of a pair of rollers, and forming and rolling are performed, thereby forming a honeycomb shock-absorbing paper pad having a design thickness, a fold edge bending portion formed at both upper and lower ends of the non-adhesive portion of the paper strip that is bent toward one side of the thickness direction, and an intermediate bending portion formed at the adhesive portion of the paper strip that is bent toward one side of the thickness direction. Here, the design spacing is the distance between the outer circles of the roller pair, the design thickness is the thickness of the honeycomb shock-absorbing paper pad after the forming and rolling are completed, and the thickness before entering the roller pair in step A3 refers to the thickness immediately before entering the roller pair in the state where the honeycomb shock-absorbing paper pad has expanded through steps A1 and A2.

[0031] In step A3 above, the pair of rollers rolls the paper pad while compressing it in the thickness direction, thereby finally forming the upper and lower ends of the non-adhesive portion of the paper strip, which was given a bending tendency toward one side in step A2, into a fold edge bending portion, and at the same time, the adhesive portion of the paper strip (i.e., the portion where two paper strips are bonded) is formed into an intermediate bending portion by the compression. Thus, the final honeycomb shock-resistant paper pad structure of the present invention (i.e., a structure in which the fold edge bending portion (1-1) and intermediate bending portion (1-2) shown in FIGS. 2 and 3 are formed) is obtained.

[0032] In step A3 above, the design spacing for forming and rolling of the roller pair is such that the distance between the outer circles of the roller pair is less than or equal to 30 to 50% of the thickness of the honeycomb shockproof paper pad in its expanded state before it enters the roller pair.

[0033] In an embodiment of the present invention, forming and rolling in step A3 are repeated 2 to 3 times. This further ensures that the bending edge bending is formed in an inelastic bending edge bending shape.

[0034] In an embodiment of the present invention, in step A3, a pair of rollers with a design spacing is configured as hot rollers so that the unadhesive portion of the paper strip is compressed by the hot rollers at both the upper and lower ends to bend the bending edge.

[0035] A honeycomb shock-resistant paper pad forming device includes a rack portion (5) that supports a transport path of a honeycomb shock-resistant paper pad (3), a scraping portion disposed on the transport path, and a forming and rolling portion disposed downstream of the scraping portion along the transport path.

[0036] The scraping portion includes a flexible upper scraper (2-1) and a flexible lower scraper (2-2), and the flexible upper scraper (2-1) and the flexible lower scraper (2-2) are fixed at an angle to the rack portion (5), and the distance between the flexible upper scraper (2-1) and the flexible lower scraper (2-2) is smaller than the thickness of the honeycomb shock-resistant paper pad (3) in an expanded state before it enters the scraping portion.

[0037] The purpose of installing the flexible upper scraper (2-1) and the flexible lower scraper (2-2) is to maintain the honeycomb shock-resistant paper pad (3) passing along the conveying path in an evenly expanded state, and at the same time, to apply a chamfering trimming action to the honeycomb shock-resistant paper pad (3) so that the upper and lower ends of the paper strip tend to bend uniformly toward one side in the thickness direction, thereby preparing the formation of fold edge bending portions at the upper and lower ends of the non-adhesive portion of the paper strip at the downstream rigid forming roller pair (4-1). In this regard, the scraping portion performs a preparatory action corresponding to step A2 (preparatory chamfering trimming step) of the forming method.

[0038] The above forming and rolling portion includes a rigid forming roller pair (4-1), the rigid forming roller pair (4-1) is fixed to the rack portion (5), and the distance between the outer circles of the rigid forming roller pair (4-1) is less than or equal to 30-50% of the thickness of the honeycomb shock-resistant paper pad (3) in its expanded state before entering the rigid forming roller pair (4-1). The rigid forming roller pair (4-1) performs a final forming action by compressing and rolling the honeycomb shock-resistant paper pad (3), which has a tendency to bend on one side while passing through the scraping portion, in the thickness direction, thereby forming fold edge bending portions at both upper and lower ends of the non-adhesive portion of the paper strip and forming an intermediate bending portion of the adhesive portion of the paper strip. In this respect, the rigid forming roller pair (4-1) performs a final forming action corresponding to step A3 (final forming step) of the forming method.

[0039] In an embodiment of the present invention, the forming and rolling portion may further include a secondary rigid forming roller pair (4-2) fixed to the rack portion (5) and positioned downstream of the rigid forming roller pair (4-1) along the transfer path, and the distance between the outer circles of the secondary rigid forming roller pair (4-2) is less than or equal to 50-65% of the thickness of the honeycomb shock-resistant paper pad (3) before it enters the secondary rigid forming roller pair (4-2), and the inlet end of the secondary rigid forming roller pair (4-2) corresponds to the outlet end of the rigid forming roller pair (4-1). The secondary rigid forming roller pair (4-2) performs an additional forming action on the fold edge bending portion formed primarily by the rigid forming roller pair (4-1) to ensure that the fold edge bending portion maintains its bending shape inelastically.

[0040] In an embodiment of the present invention, the flexible upper scraper (2-1) and the flexible lower scraper (2-2) are elastic pieces having a brush or teeth. The flexible upper scraper (2-1) and the flexible lower scraper (2-2) ensure that the honeycomb shock-absorbing paper pad (3) is not damaged during use.

[0041] In an embodiment of the present invention, the rigid forming roller pair (4-1) or the secondary rigid forming roller pair (4-2) is a hot roller. Explanation of the symbols

[0042] 1: Paper strip; 1-1: Fold edge bending section; 1-2: Bending section; 2-1: Flexible upper scraper; 2-2: Flexible lower scraper; 3: Honeycomb shock-absorbing paper pad; 4-1: Rigid forming roller pair; 4-2: Secondary rigid forming roller pair; 5: Rack section

Claims

Claim 1 A honeycomb shock-resistant paper pad structure comprising a group of paper strips (1) bonded together at intervals, wherein the group of paper strips (1) forms a honeycomb cell structure overall when expanded, wherein each paper strip (1) includes a bonded portion bonded to another paper strip (1) and a non-bonded portion not bonded to another paper strip (1), wherein a folded edge bending portion (1-1) is installed at both upper and lower ends of the non-bonded portion and is folded toward one side in the thickness direction of the honeycomb shock-resistant paper pad, and an intermediate bending portion (1-2) is installed at the bonded portion and is bent toward one side in the thickness direction of the honeycomb shock-resistant paper pad. Claim 2 A method for forming a honeycomb shock-absorbing paper pad, comprising a shrink cell-type shock-absorbing paper pad formed by bonding a group of parallel paper strips at intervals, wherein each paper strip includes an adhesive portion bonded to another paper strip and a non-adhesive portion not bonded to another paper strip, and wherein the shrink cell-type shock-absorbing paper pad is stretched and expanded such that when expanded, the group of paper strips bonded at intervals form an overall honeycomb cell structure, thereby obtaining a honeycomb shock-absorbing paper pad; and a step A2, wherein, while maintaining the stretched and expanded state in step A1 so that the tensile stress in the tension direction of the paper strip does not change, chamfer trimming is performed on the honeycomb shock-absorbing paper pad to prepare a state in which the upper and lower ends of the non-adhesive portion of the paper strip have a tendency to bend toward one side in the thickness direction of the honeycomb shock-absorbing paper pad. A method for forming a honeycomb shock-resistant paper pad, comprising: step A3, wherein the honeycomb shock-resistant paper pad of step A2 is supplied to a pair of roller pairs having a design spacing such that the thickness direction is orthogonal to the rotation axis direction of a pair of roller pairs, and forming and rolling the honeycomb shock-resistant paper pad having a design thickness, wherein a fold edge bending portion is formed at both upper and lower ends of the non-adhesive portion and a middle bending portion is formed at the adhesive portion and bent toward one side of the thickness direction; wherein the design spacing is the distance between the outer circles of the roller pairs, the design thickness is the thickness of the honeycomb shock-resistant paper pad after the forming and rolling are completed, and the thickness before entering the roller pairs in step A3 refers to the thickness immediately before entering the roller pairs in the state in which the honeycomb shock-resistant paper pad has expanded through steps A1 and A2. Claim 3 A method for forming a honeycomb shock-resistant paper pad according to claim 2, characterized in that the forming and rolling in step A3 are repeated 2 to 3 times. Claim 4 A method for forming a honeycomb shock-absorbing paper pad according to claim 2, wherein the design spacing of the forming and rolling of the roller pair in step A3 is such that the distance between the outer circles of the roller pair is less than or equal to 30 to 50% of the thickness of the expanded state of the honeycomb shock-absorbing paper pad before it enters the roller pair. Claim 5 A method for forming a honeycomb shock-resistant paper pad according to claim 2, characterized in that, in step A3, a pair of rollers having a design gap are hot rollers, and the unbonded portion of the paper strip is compressed by the hot rollers at both the upper and lower ends so that the bending edge is bent and deformed. Claim 6 A honeycomb shock-resistant paper pad forming device for forming a honeycomb shock-resistant paper pad (3), comprising: a rack portion (5) supporting a transport path of the honeycomb shock-resistant paper pad (3); and a scraping portion including a flexible upper scraper (2-1) and a flexible lower scraper (2-2) disposed on the transport path and fixed at an angle to the rack portion (5). and a forming and rolling section comprising a rigid forming roller pair (4-1) fixed to the rack section (5) and disposed downstream of the scraping section along the transfer path; wherein the distance between the flexible upper scraper (2-1) and the flexible lower scraper (2-2) is smaller than the thickness of the honeycomb shock-resistant paper pad (3) in an expanded state before entering the scraping section, so that the scraping section applies chamfer trimming to the honeycomb shock-resistant paper pad (3) to induce the upper and lower ends of the paper strip constituting the honeycomb shock-resistant paper pad (3) to tend to bend toward one side, and the distance between the outer circles of the rigid forming roller pair (4-1) is less than or equal to 30-50% of the thickness of the honeycomb shock-resistant paper pad (3) in an expanded state before entering the rigid forming roller pair (4-1), so that the rigid forming roller pair (4-1) passes through the scraping section A honeycomb shockproof paper pad forming device characterized by performing a final forming action to form a folded edge bending part and an intermediate bending part with respect to a honeycomb shockproof paper pad (3). Claim 7 In claim 6, the forming and rolling portion further comprises a secondary rigid forming roller pair (4-2) fixed to the rack portion (5) and positioned downstream of the rigid forming roller pair (4-1) along the transfer path, wherein the inlet end of the secondary rigid forming roller pair (4-2) corresponds to the outlet end of the rigid forming roller pair (4-1), and the distance between the outer circles of the secondary rigid forming roller pair (4-2) is less than or equal to 50-65% of the thickness immediately before the honeycomb shock-resistant paper pad (3) enters the secondary rigid forming roller pair (4-2) after passing through the rigid forming roller pair (4-1), thereby performing an additional forming action on the folded edge bending portion formed by the rigid forming roller pair (4-1). Claim 8 A honeycomb shock-resistant paper pad forming device according to claim 6, wherein the flexible upper scraper (2-1) and the flexible lower scraper (2-2) are elastic pieces having a brush or teeth. Claim 9 A honeycomb shock-resistant paper pad forming device according to claim 6, characterized in that the rigid forming roller pair (4-1) or the secondary rigid forming roller pair (4-2) is a hot roller.

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