WO2024104465A1

WO2024104465A1 - Method and apparatus for manufacturing cushioning pad, and cushioning pad

Info

Publication number: WO2024104465A1
Application number: PCT/CN2023/132359
Authority: WO
Inventors: 刘玉贵; 盛天德; 张丹波; 阙银龙
Original assignee: 杭州丙甲科技有限公司
Priority date: 2022-11-18
Filing date: 2023-11-17
Publication date: 2024-05-23

Abstract

A method and apparatus for manufacturing a cushioning pad, and a cushioning pad. The cushioning pad comprises a pad body (20); the pad body (20) is provided with N bending portions (22), to form N+1 sub-bodies (200) on the pad body (20), wherein N≥1; at least two adjacent sub-bodies (200) are provided with openings (23) at ends thereof away from the bending portion (22) therebetween. The structure of the cushioning pad makes the cushioning pad have a more three-dimensional structure and better cushioning effect.

Description

Method and device for manufacturing cushioning pad and cushioning pad

Technical Field

The invention relates to a cushioning pad for packaging, and in particular to a method and a device for manufacturing the cushioning pad and the cushioning pad.

Background technique

In order to prevent or reduce the displacement of items in the packaging container during transportation, cushioning materials can be used to fill the gaps in the packaging container to protect the items from damage. The low-density cushioning materials required for this type of packaging are generally obtained by converting raw material sheets through a cushioning conversion machine.

However, the cushioning pads used for filling in the prior art solutions are either not three-dimensional enough, and can neither provide a better cushioning effect nor reduce the use of consumables; or although cushioning pads with lower density and stronger cushioning effect can be obtained, the production of such cushioning pads is highly dependent on the structure of the raw material sheet, and requires the use of raw material sheets with complex structures, which are often more expensive.

Therefore, inventing a pad with lower density and better cushioning effect, as well as a method or equipment for manufacturing such a pad, so as to reduce the number of pads required for the same package and reduce the cost of packaging items, is an urgent problem to be solved in the field of using cushioning pads to package items.

Summary of the invention

In order to solve at least one of the above problems, according to one aspect of the present invention, a cushioning pad is provided.

The buffer pad comprises a pad body, which is provided with N bending parts, N≥1, so as to form N+1 sub-bodies on the pad body, and at least two adjacent sub-bodies have openings at their ends away from the bending part therebetween.

Since the cushion body is divided into at least two sub-bodies by setting a bending portion, and the ends of adjacent sub-bodies away from the bending portion therebetween are formed with openings, this arrangement makes the structure of the cushion body more three-dimensional and has a better cushioning effect.

According to one aspect of the present invention, a method for preparing a buffer pad is provided.

The preparation method of the cushioning pad comprises the following steps:

S20: Bending the pad body to form N bending portions on the pad body, and dividing the pad body into N+1 sub-bodies through the bending portions, and at the same time, making the distance between at least two adjacent sub-bodies An opening is formed at the end of the bent portion therebetween.

By adopting the preparation method of the present invention, the dependence of the preparation of the cushioning pad on the raw material sheet with complex structure is avoided. Only ordinary paper sheets are needed to prepare the cushioning pad having the bending parts that distinguish N+1 sub-bodies on the cushion body, so that the cushioning pad has a more three-dimensional structure, thereby making the prepared cushioning pad have a better cushioning effect than the general cushioning pad.

According to one aspect of the present invention, an apparatus for manufacturing a cushioning pad is provided.

The device for manufacturing a buffer pad comprises: a frame; and a bending unit fixed relative to the frame and used to form N bending portions on a pad body, so as to separate the pad body into N+1 sub-bodies through the bending portions, and capable of forming an opening at the ends of at least two adjacent sub-bodies away from the bending portion therebetween.

The device of the present invention forms N bending portions on the pad body that can separate the pad body into N+1 sub-bodies, and forms openings at the ends of at least two adjacent sub-bodies away from the bending portion therebetween, so that the prepared buffer pad has a more three-dimensional structure and a better buffering effect.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 (a) is a schematic structural diagram of a buffer pad according to a first embodiment of the present invention;

FIG. 1( b ) is a simplified schematic diagram of a first embodiment of the cross-sectional structure of the buffer pad along the A-A direction shown in FIG. 1( a );

FIG. 1( c ) is a simplified schematic diagram of the cross-sectional structure of the buffer pad shown in FIG. 1( a ) along the B-B direction;

FIG2 is a schematic structural diagram of a buffer pad according to a second embodiment of the present invention;

FIG. 3 (a) is a schematic structural diagram of a buffer pad according to a third embodiment of the present invention;

FIG. 3( b ) is a simplified schematic diagram of a first embodiment of the cross-sectional structure of the buffer pad along the C-C direction shown in FIG. 3( a );

FIG4 is a simplified schematic diagram of a second embodiment of the cross-sectional structure of the buffer pad along the A-A direction shown in FIG1 (a);

FIG5 is a simplified schematic diagram of a second embodiment of the cross-sectional structure of the buffer pad along the C-C direction shown in FIG3 (a);

FIG6 is a schematic structural diagram of a buffer pad according to a fourth embodiment of the present invention;

FIG. 7 (a) is a schematic structural diagram of a cushion pad according to a fifth embodiment of the present invention;

FIG. 7 (b) is a cross-sectional structure of the buffer pad shown in FIG. 7 (a) along the DD direction. A simplified schematic diagram of an embodiment;

FIG8 is a simplified schematic diagram of an embodiment of the cross-sectional structure of the buffer pad along the E-E direction shown in FIG7 (b);

FIG9 is a schematic structural diagram of a buffer pad according to a sixth embodiment of the present invention;

FIG. 10 (a) is a schematic structural diagram of a cushion pad according to a seventh embodiment of the present invention;

FIG. 10 (b) is a simplified structural schematic diagram of an embodiment of the cross-sectional structure of FIG. 10 (a) along the F-F direction;

FIG. 10 (c) is a schematic diagram of a partial structure of the first extension portion provided with a blocking portion passing through the first matching hole in FIG. 10 (b);

FIG11 is a schematic structural diagram of a first bending line and a second bending line in one embodiment of the present invention;

FIG12 is a schematic structural diagram of a first bending line and a second bending line in another embodiment of the present invention;

FIG13 is a schematic structural diagram of a first bending line and a second bending line in another embodiment of the present invention;

14 is a schematic structural diagram of a buffer pad according to an eighth embodiment of the present invention;

FIG. 15 (a) is a schematic structural diagram of a buffer pad according to a ninth embodiment of the present invention;

FIG. 15( b ) is a simplified structural schematic diagram of an implementation of the cross-sectional structure of FIG. 15( a ) along the G-G direction;

16 is a schematic structural diagram of a buffer pad according to a tenth embodiment of the present invention;

FIG17 is a simplified schematic diagram of the cross-sectional structure of the cushion pad shown in FIG16;

FIG18 is a schematic structural diagram of a buffer pad according to an eleventh embodiment of the present invention;

FIG. 19 (a) is a schematic structural diagram of a buffer pad according to a twelfth embodiment of the present invention;

FIG. 19( b ) is a simplified structural schematic diagram of an implementation of the cross-sectional structure of FIG. 19( a ) along the H-H direction;

FIG20 is a schematic flow diagram of a method for preparing a cushion pad according to a first embodiment of the present invention;

21 is a schematic flow diagram of a method for preparing a cushioning pad according to a second embodiment of the present invention;

FIG22 is a schematic structural diagram of the gasket body prepared in step S10;

FIG23 is a schematic structural diagram of an apparatus for manufacturing a cushioning pad according to an embodiment of the present invention;

FIG24 is a schematic structural diagram of the device for manufacturing a cushioning pad shown in FIG23 from another perspective;

FIG25 is a schematic cross-sectional view of the device for manufacturing a cushioning pad shown in FIG24 along the DD direction;

FIG26 is a schematic structural diagram of a bending structure according to an embodiment of the present invention;

FIG27 is a schematic structural diagram of a crumpling unit according to an embodiment of the present invention;

FIG28 is a schematic diagram of a module structure of an apparatus for manufacturing a cushioning pad according to an embodiment of the present invention;

FIG. 29 (a) is a schematic diagram of a cross-sectional structure of a roller body according to an embodiment;

Figure 29 (b) is a schematic diagram of the structure along the I direction of Figure 29 (a).

Detailed ways

It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include" and "comprise" include not only those elements, but also other elements that are not explicitly listed, or also include elements inherent to such processes, methods, articles or equipment. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, method, article or equipment that includes the elements. The terms used in this article are generally commonly used terms by those skilled in the art. If they are inconsistent with commonly used terms, the terms in this article shall prevail.

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

FIG. 1( a ) to FIG. 1( c ) schematically show a first embodiment of a cushioning pad according to the present invention.

As shown in FIG. 1 (a), the cushion pad includes a cushion body 20; the cushion body 20 is integrally formed or processed with N bending portions 22, wherein N is an integer and N≥1, so as to form N+1 sub-bodies 200 on the cushion body 20, and at least two adjacent sub-bodies 200 have ends away from the bending portion 22 therebetween formed with an opening 23. Since the cushion pad of the present invention forms at least two sub-bodies 200 that are not completely fitted to each other through the bending portion 22, the cushioning effect of the cushion pad is improved.

As one embodiment in which an opening 23 is formed at the end of two adjacent sub-bodies 200 away from the bending portion 22 therebetween, as shown in FIG. 1 (a) and FIG. 1 (c), the cross-section of the buffer pad is a structure close to a "V" shape.

In some preferred embodiments, as shown in FIG. 1 (c), a pleated area is integrally formed or processed on the pad body 20; the pleated area includes at least two pleats 21, each pleat 21 having a peak At least one of the two, 211 and the trough 212, thereby making the cushioning pad of the present invention have a better cushioning effect than the general cushioning pad. Preferably, as shown in Figure (c) of Figure 1, at least two folds 21 with crests 211 and troughs 212 are formed on at least one sub-body 200. In order to further improve the three-dimensionality of the cushioning pad, preferably, as shown in Figure (a) of Figure 1, the crest line 2111 of the crest 211 and the trough line 2121 of the trough 212 can be set to be non-parallel to the length direction of the cushioning body 20. As a result, it is possible to avoid the extension direction of the bending portion 22 (i.e. the extension direction of the bending line) being in the same direction as the crest line 2111 or the trough line 2121, so that the cushioning pad has at least two bends in different directions by controlling the fold line (crest line 2111 and trough line 2121) to be non-parallel to the extension direction of the bending portion 22, thereby further improving the three-dimensionality and cushioning effect of the cushioning pad. Preferably, all the folds 21 are arranged along the length direction of the cushion body 20 (eg, the direction parallel to the Y axis in FIG. 1 (a) ).

In the present invention, as shown in FIG. 1 (c), the crest 211 and the trough 212 of the fold 21 are a set of relative concepts. For example, when the structure of the fold 21 protruding toward the inner side of the "V" shape is called the crest 211, the structure of the fold 21 protruding toward the outer side of the "V" shape is called the trough 212; conversely, if the structure of the fold 21 protruding toward the inner side of the "V" shape is called the trough 212, the structure of the fold 21 protruding toward the outer side of the "V" shape is called the crest 211. The cushioning pad having the fold area 21 presents a wavy structure on its longitudinal section, as shown in FIG. 1 (c).

In some embodiments, the length direction of the pad body 20 may extend in a straight line direction, as shown in FIGS. 1( a ) and ( b ).

As one of the implementation modes of the number of bending portions 22, as shown in Figure 1 (a), when the number of bending portions 22 is 1, the bending portion 22 separates the pad body 20 into two sub-bodies 200. In order to facilitate the distinction between the two sub-bodies 200, the two sub-bodies 200 can be respectively marked as a first body 201 and a second body 202, that is, a first body 201 and a second body 202 are respectively formed on both sides of the bending portion 22 of the pad body 20.

In some preferred embodiments, as shown in FIG. 1 ( a ), the extending direction of the bent portion 22 is arranged to be substantially along the length direction of the pad body 20 .

As one embodiment of the structure of the bending portion 22, as shown in Figure 1 (a), the bending portion 22 exists on the pad body 20 in the form of a line (i.e., a bending line, which can be a straight line or a folded line, as shown in Figures 1 (a) and (c)).

As another embodiment of the structure of the bending portion 22c, as shown in FIG4, the bending portion 22c exists on the pad body 20c in the form of a fold to separate sub-bodies 200c on both sides of the bending portion 22c of the pad body 20c. For example, a first body 201c located on one side of the bending portion 22c and a second body 202c located on the other side of the bending portion 22c are distinguished on the pad body 20c.

FIG2 schematically shows a second embodiment of a cushion pad according to the present invention. The difference between this embodiment and the first embodiment of the cushion pad is at least that the length direction of the cushion body 20a can extend along the arc direction. As shown in FIG2, in this embodiment, since the length direction of the cushion body 20a extends along the arc direction, the cushion body 20a can extend along the arc direction. The liner body 20a extends in the linear direction, so that the three-dimensionality of the liner body 20a is stronger and the cushioning effect is better.

As one embodiment of the structure of the bending portion 22a, as shown in FIG2 , the bending portion 22a exists on the pad body 20a in the form of a line (i.e., a bending line, which may be an arc line, as shown in FIG2 ) to distinguish on the pad body 20a a first body 201a located on one side of the bending portion 22a and a second body 202a located on the other side of the bending portion 22a.

Preferably, as shown in FIG. 2 , the crest line 2111 a of the crest and the trough line 2121 a of the trough are arranged to be non-parallel to the length direction of the pad body 20 a .

Figures (a) to (b) in Figure 3 schematically show a third embodiment of the cushion pad according to the present invention. The difference between this embodiment and the first and second embodiments of the cushion pad is at least that at least part of the surface of at least two adjacent sub-bodies 200b close to the bending portion 22b fits together. As one embodiment, as shown in Figure (b) in Figure 3, at least part of the surface of the first body 201b close to the bending portion 22b fits together with at least part of the surface of the second body 202b close to the bending portion 22b, so that the cross-section of the cushion pad is "Y"-shaped, and an opening 23b is formed at the end of the cushion pad away from the bending portion 22b. Preferably, as shown in Figure (a) in Figure 3, the crest line 2111b of the crest and the trough line 2121b of the trough are arranged to be non-parallel to the length direction of the cushion body 20b.

As another embodiment of at least two adjacent sub-bodies 200d, at least a portion of the surface of the bending portion 22d close to the at least one sub-body 200d is mutually attached, as shown in Fig. 5, at least a portion of the surface of the bending portion 22d close to the at least one adjacent sub-body 200d is mutually attached under the action of the locking structure 24d. As one embodiment of the locking structure 24d, as shown in Fig. 5, the bending portion 22d separates the first body 201d and the second body 202d on the pad body 20d, and the locking structure 24d includes a first fold 2011d on the first body 201d and a second fold 2021d on the second body 202d, and at least one first fold 2011d is embedded with at least one second fold 2021d, so as to achieve the attachment of the first body 201d and the second body 202d at the embedded part. Thus, the first fold 2011d on the first body 201d and the second fold 2021d on the second body 202d can be interlocked to avoid separation of the interlocking parts, thereby stably ensuring that the cross section of the cushion pad is a three-dimensional structure of the "Y" shape. Preferably, the locking structure 24d is arranged at a position of the cushion body 20d close to the bent portion 22d, so that the cross section of the cushion body 20d is a three-dimensional structure of the "Y" shape under the action of the locking structure 24d.

Since the cushioning pad of the present invention has a bending portion 22, the incidence of the cushioning pad unfolding into a structure with a cross section close to an "I" shape (as shown in Figure 24) can be greatly reduced, so that the cushioning pad can more stably maintain a three-dimensional structure with a cross section close to a "V" shape or a "Y" shape during placement or use.

FIG6 schematically shows a fourth embodiment of a cushion pad according to the present invention. The difference between this embodiment and the first to third embodiments of the cushion pad is at least that the cushion body 20e includes at least two sheets that at least partially overlap in the thickness direction. Taking the cushion body 20e as an example, as shown in FIG6, the cushion body 20e includes a sheet 2000e` and a sheet 2000e`, wherein the sheet 2000e` is formed by The bending portion 22e is divided into a first body 201e` and a second body 202e`, and the sheet 2000e`` is divided into a first body 201e`` and a second body 202e`` by the bending portion 22e. Preferably, at least one sheet includes at least two folds 21e, and each fold 21e has at least one of a crest 211e and a trough 212e.

FIG7 and FIG8 schematically show a fifth embodiment of the cushion pad according to the present invention. The difference between this embodiment and the first embodiment of the cushion pad is at least that, as shown in FIG7 and FIG8, the bending portion 22f of the cushion body 20f includes at least two bending sections 221f and at least one overlapping section 222f; the bending sections 221f and the overlapping sections 222f in each bending section 22f are arranged alternately; the bending sections 221f form a first bending line; the overlapping section 222f includes at least two bending points 2221f and a second bending line 2222f located between adjacent bending points 2221f, and the second bending line 2222f is adjacent to the first bending line or the second bending line 2222f. The angle formed by 22f ranges from 0° to 60°, and the first bending line and the second bending line 2222f in each bending portion 22f are located in the same plane, so as to separate the two sides of the pad body 20f located in the same plane jointly formed by the first bending line and the second bending line 2222f into two sub-bodies 200f (respectively the first body 201f and the second body 202f), and the ends of the first body 201f and the second body 202f away from the bending portion 22f form an opening 23f, that is, the first body 201f and the second body 202f are not completely fitted together.

Exemplarily, the angle formed by the second bending line 2222f and the adjacent first bending line (bending segment 221f) is the angle A between the second bending line 2222f and the adjacent first bending line (bending segment 221f) (as shown in FIGS. 11 to 13); specifically, when the number of bending points 2221f in an overlapping portion 222f is M, the number of second bending lines 2222f is M-1. Therefore, when the number of bending points 2221f is greater than two, the number of second bending lines 2222f in an overlapping portion 222f may be more than two. Only when there is an angle B between two adjacent second bending lines 2222f (as shown in FIG. 12, an overlapping portion includes three bending points 2221f`, two second bending lines 2222f` located between the bending points 2221f`, and two bending segments 221f` located outside the bending points 2221f`; as shown in FIG. 13, an overlapping portion includes four bending points 2221f``, two second bending lines 2222f`` located between the bending points 2221f``, and two bending segments 221f`` located outside the bending points 2221f``).

Since the bending portion 22f of the buffer pad of the present invention includes a first bending line and a second bending line 2222f, the stability of the bending portion 22f is improved, and at the same time, the tensile strength of the buffer pad in the extension direction of the bending portion 22f is improved, thereby improving the deformation resistance of the buffer pad, making the buffer pad less likely to unfold, thereby improving the buffering effect of the buffer pad.

In some preferred embodiments, as shown in FIG. 7 (a) and FIG. 8, at least two folds 21f having crests 211f and troughs 212f are formed on at least one of the first body 201f and the second body 202f (that is, folds are formed on the first body 201f, or folds 21f are formed on the second body 202f, or folds 21f are formed on both the first body 201f and the second body 202f). Thus, the cushioning effect of the cushion pad can be further improved; and, since the bending portion 22f has the first bending line and the second bending line 2222f, the stability of the fold structure can be improved by improving the tensile strength of the cushion pad in the extension direction of the bending portion 22f.

Exemplarily, the pad body 20f can be made of a sheet 2000f, such as paper; the bending portion 22f can be obtained by bending the sheet 2000f, and the extension direction of the bending portion 22f is the bending line formed on the sheet 2000f after the sheet 2000f is bent, which can be set to be straight, arc, wavy or spiral as needed.

In some preferred embodiments, as shown in Figures 11 and 13, the number of bending points 2221f is an even number, thereby ensuring that the pad body 20f extends substantially along the direction in which the first bending line extends, thereby improving the efficiency of automatically processing the cushion pad through equipment.

In order to improve the cushioning effect of the cushioning pad, the cushioning pad can also be arranged to be: at least part of the cushion body 20 as a whole is in an arc shape, a spiral shape (that is, at least part of the cushion body 20 is deflected at an angle while extending, forming a spiral structure similar to a spatial structure similar to a tension spring, generally referring to a three-dimensional structure that occupies a position in three-dimensional space) or a zigzag shape (that is, the cushion body 20 has at least two deflections when extended, and the directions of at least two deflections are different, generally referring to a planar structure that occupies a position in two-dimensional space). For example, at least part of the cushion body 20f as a whole is in an arc shape (as shown in Figure (a) of Figure 7); or, at least part of the cushion body 20 as a whole is in a spiral shape; or, at least part of the cushion body 20g as a whole is in a zigzag shape (Figure 9 schematically shows a sixth embodiment of the cushioning pad according to the present invention). It can be seen from Figure 9 that the bending section in the cushion body 20g 221g has at least two deflections when extended, and the directions of at least two deflections are different, so as to form sub-bodies 200g on both sides of the bending section 221g (the sub-body on one side is the first body 201g, and the sub-body 200g on the other side is the second body 202g, and at least one of the first body 201g and the second body 202g has at least two folds 21g with crests 211g and troughs 212g; or, the cushion body 20 as a whole has several parts (more than two places), at least one part of which is arc-shaped, and at least another part of which is spiral and/or arc-shaped; or, the cushion body 20 as a whole has several parts (more than two places), at least one part of which is spiral-shaped, and at least another part of which is arc-shaped. In this way, the overall sense of space and fluffiness of the cushioning pad can be improved, thereby improving the cushioning effect of the cushioning pad; moreover, the deformation resistance and tensile resistance of the cushioning pad can also be improved.

Figures (a) to (c) in Figure 10 schematically show a seventh embodiment of a cushioning pad according to the present invention. The difference between this embodiment and the first embodiment of the cushioning pad is at least that it has a locking structure 24h of another embodiment. As shown in Figures (a) and (b) in Figure 10, the locking structure 24h includes a first extension portion 241h integrally formed, processed or connected to either the first body 201h or the second body 202h at a position close to the bending portion 22h; and a first mating hole 242h integrally formed or processed on the other of the first body 201h and the second body 202h for the first extension portion 241h to pass through. For example, the first extension portion 241h is integrally formed or processed on the first body 201h, and the first mating hole 242h is integrally formed or processed on the second body 202h at a position corresponding to the first extension portion 241h. Thus, the first extension portion 241h can be passed through the first matching hole 242h so that the surface of the first body 201h close to the bent portion 22h is attached to the surface of the second body 202h close to the bent portion 22h, thereby improving the High cushioning pad "Y" shape for stability.

Preferably, as shown in FIG. 10( b ), one of the first body 201h and the second body 202h having the first extension 241h is also integrally formed or processed with a first through hole 243h corresponding to the first matching hole 242h. Thus, the first extension 241h integrally formed on the first body 201h or the second body 202h can be formed at the same time as the first through hole 243h is formed. For example, the first extension 241h and the first through hole 243h are formed on the first body 201h by stamping the first body 201h, wherein the first extension 241h is connected to the first body 201h, thereby reducing the loss of raw materials and simplifying the production process.

Furthermore, as shown in FIG. 10( b ), one of the first body 201 h and the second body 202 h having the first matching hole 242 h is also provided with a second extending portion 244 h corresponding to the first extending portion 241 h . Thus, a second extension portion 244h integrally formed on the first body 201h or the second body 202h can be formed while preparing the first mating hole 242h. For example, the second extension portion and the first mating hole 242h can be formed on the second body 202h by stamping the second body 202h, wherein the second extension portion 244h is connected to the second body 202h, and the first mating hole 242h corresponds to the position of the first through hole 243h, thereby reducing the loss of raw materials and directly forming the first extension portion 241h and the first through hole 243h integrally on the first body 201h by stamping the first body 201h and the second body 202h at the same time, and at the same time, forming the second extension portion 244h and the first mating hole 242h integrally on the second body 202h, thereby simplifying the production process.

Preferably, as shown in Figure 10 (c), the side of the first extension portion 241h passing through the first matching hole 242h is inclined toward the side away from the first matching hole 242h; or the side of the first extension portion 241h passing through the first matching hole 242h is provided with at least one blocking portion 2411h, and the maximum width of the structure formed integrally by the blocking portion 2411h and the first extension portion 241h is greater than the maximum width of the first matching hole 242h. For example, when only one blocking portion 2411h is provided, the sum of the maximum width W2 or W3 of the blocking portion 2411h and the maximum width W1 of the first extension portion 241h is greater than the maximum width W4 of the first extension portion 241h (including the case where W2 or W3 is greater than W4, and also including the case where W1 is greater than W4); when two blocking portions 2411h are provided, the sum of the maximum widths W2 and W3 of the two blocking portions 2411h and the maximum width W1 of the first extension portion 241h is greater than the maximum width W4 of the first extension portion 241h, that is, W1+W2+W3＞W4 (including the case where W2 or W3 is greater than W4, and also including the case where W1 is greater than W4). Thus, the first extension portion 241h provided with the blocking portion 2411h can be prevented from coming out of the first matching hole 242h.

In other embodiments, the difference from the first embodiment of the cushion pad is at least that the cushion body 20i is provided with at least two bending portions 22i, and the extension direction of at least two bending portions 22i is the same, so that the cross section of the cushion body 20i is "N"-shaped (when there are two bending portions 22i), or the cross section of the cushion body 20k is "W"-shaped (when there are three bending portions 22k). When there are more bending portions 22k, the cross section of the cushion body 20k is sawtooth-shaped. For example, the cushion body 20i is provided with two, three, four, six, or eight bending portions 22i to form N+1 sub-capsule sections on the cushion body 20i. The body 200i, each of the two sides of the bending portion 22i has a sub-body 200i. In order to facilitate the distinction between different sub-bodies 200i, different sub-bodies 200i can be distinguished by serial numbers and named as the nth body. For example, when there are two bending portions 22i, the sub-bodies 200i are respectively the first body 201i, the second body 202i and the third body 203i (Figure 14 schematically shows the eighth embodiment of the cushioning pad according to the present invention). For another example, when there are three bending portions 22k, the sub-bodies 200k are respectively the first body 2 01k, a second body 202k, a third body 203k and a fourth body 204k (Figures 16 and 17 schematically show the tenth embodiment of the cushioning pad according to the present invention), and at least two adjacent sub-bodies 200k have openings 23k formed at the ends away from the bending portion 22k therebetween, for example, the cross-sections of the sub-bodies 200k located on both sides of the bending portion 22k are close to a "V"-shaped structure (as shown in Figure 17) or a "Y"-shaped structure (Figure 15 schematically shows the ninth embodiment of the cushioning pad according to the present invention). Since more than two bending portions 22i are provided on the pad body 20i, the three-dimensionality of the buffer pad is enhanced, thereby improving the compression resistance and deformation resistance of the buffer pad; moreover, since a plurality of bending portions 22i are provided, the width of the sub-body 200i perpendicular to the bending portion 22i can be prevented from being too long, thereby ensuring the strength of the sub-body 200i restricted by the bending portion 22i, and ensuring the deformation resistance of the buffer pad, thereby being able to meet the buffering needs of some medium and large objects.

In some preferred embodiments, the cushion body 20j is provided with at least two bent portions 22j, and at least part of the surface of at least two adjacent sub-bodies 200j close to the bent portion 22j therebetween is mutually attached via a locking structure 24j (as shown in FIG. 15 ). The locking structure 20j in this embodiment is similar to the locking structure 20h in the seventh embodiment, and will not be described in detail herein. Thus, the stability of the "Y"-shaped structure of the cushion can be further improved via the locking structure 24j.

FIG. 18 schematically shows an eleventh embodiment of a cushion pad according to the present invention. The difference between this embodiment and the first embodiment of the cushion pad is at least that the extension direction of the bending portion is not a straight line. For example, the extension direction of the bending portion 211 is zigzag, for example, extending in a wave shape or a spiral shape. Since the extension direction of the bending portion 221 is not a straight line, the cushion body 201 will not be fully unfolded even when subjected to external tension, thereby ensuring the tensile strength of the cushion pad and maintaining the three-dimensionality of the cushion pad.

Figure 19 schematically shows a twelfth embodiment of the buffer pad according to the present invention. The difference between this embodiment and the eleventh embodiment of the buffer pad is at least that the ratio of the width Wa of the first body 201m to the width Wb of the second body 202m is in the range of 1/3-3, that is, the value range of Wa:Wb is 1/3-3. Specifically, the width of the first body 201m and the second body 202m is the distance located on both sides of the bending portion 22m and substantially perpendicular to the bending portion 22m (as shown in Figure (b) in Figure 19), so as to ensure the three-dimensionality and buffering performance of the buffer pad by ensuring that the first body 201m and the second body 202m have a certain width. In some preferred embodiments, the ratio of the total width Wtotal to the total height Htotal of the cross section of the cushion body 20m is in the range of 1/2-2, that is, the value range of Wtotal:Htotal is 1/2-2 (as shown in FIG. 4). Specifically, the total height of the cushion body 20m is the distance from the edge of the first body 201m to the bending portion, and the total width of the cushion body 20m is the distance from the edge of the first body 201m to the edge of the second body 202m. Thus, The three-dimensionality and cushioning performance of the entire cushion body 20m are ensured.

20 to 21 schematically illustrate a method for preparing a cushioning pad according to at least one embodiment of the present invention.

FIG. 20 exemplarily shows a method for preparing a buffer pad according to a first embodiment of the present invention.

The method for preparing the cushioning pad of this embodiment comprises the following steps:

S20: Bending the gasket body to form N bending portions on the gasket body, and dividing the gasket body into N+1 sub-bodies through the bending portions, and forming openings at ends of at least two adjacent sub-bodies away from the bending portion therebetween.

Preferably, in step S20 , the extending direction of the processed bending portion 22 is substantially arranged along the length direction of the pad body 20 .

In step S20 , the pad body 20 is bent. The bending process may be performed manually by an operator or by using a bending unit 50 for bending a sheet in the prior art.

By adopting the preparation method of the present invention, the dependence of the preparation of the cushioning pad on the raw material sheet with complex structure is avoided. Only ordinary paper sheets are needed to prepare the cushioning pad having the bending portion 22 that distinguishes N+1 sub-bodies 200 on the cushion body, so that the cushioning pad has a more three-dimensional structure, thereby making the prepared cushioning pad have a better cushioning effect than the general cushioning pad.

In some preferred embodiments, before step S20, the following steps are also included:

S10 : performing a crumpling process on the raw material sheet to form at least two wrinkles 21 having crests 211 and/or troughs 212 on the raw material sheet to form a pad body 20 .

In step S10, the raw material sheet can be a paper sheet of packaging consumables, which can be a single-layer paper sheet or a multi-layer paper sheet; the raw material sheet can be crumpled manually by an operator, or by a crumpling unit 40 for crumpling paper sheets in the prior art. The cushion body 20 with wrinkles 21 obtained by the crumpling process in step S10 can obtain the cushion body 20 shown in FIG. 24 when the width of the raw material sheet is completely crumpled. Of course, the wrinkles 21 on the cushion body 20 are not necessarily evenly distributed as shown in FIG. 24. Since the raw material sheet is crumpled in step S10, the method of this embodiment can produce a cushion pad as shown in FIG. 1 (a), FIG. 2, FIG. 3 (a), FIG. 6, FIG. 7 (a), FIG. 9, FIG. 10, FIG. 14, FIG. 15 (a), FIG. 16 and FIG. 18.

In some embodiments, in step S10, when the raw material sheet is crumpled, the crest line 2111 of the crest 211 and the trough line 2121 of the trough 212 formed in the fold 21 are not parallel to the length direction of the pad body 20. Thus, it is possible to avoid the extension direction of the bending portion 22 being in the same direction as the crest line 2111 or the trough line 2121, so that the prepared cushion pad has at least two bends in different directions by controlling the fold line to be not parallel to the extension direction of the bending portion 22, thereby further improving the three-dimensionality and the cushion pad. Cushioning effect.

In some preferred embodiments, after step S20, the following steps are further included:

S30: performing shaping processing on the sub-body 200.

In some embodiments, in step S30, the first body 201 and the second body 202 are subjected to a shaping process so that the cross section of the buffer pad is close to a "V"-shaped structure.

In step S30, the bending treatment of the cushion body 20 may be performed to strengthen the bending portion 22, for example, by pressing the first body 201 toward the second body 202 so that the bending line of the bending portion 22 is shaped to form a cushioning cushion having a cross-section that is close to a "V" shape as shown in FIG. 1 (c), FIG. 4, FIG. 7 (b), FIG. 17, and FIG. 19 (b).

In other embodiments, in step S30, the first body 201 and the second body 202 are shaped so that at least a portion of the surface of the first body 201 near the bending portion 22 fits with at least a portion of the surface of the second body 202 near the bending portion 22, so that the cross section of the buffer pad is in a "Y" shape. The shaping treatment of the pad body 20 that has been bent can be a crumpling treatment or a rolling treatment of the first body 201 and the second body 202 near the bending portion 22. Specifically, it can be performed manually by an operator, or the first body 201 and the second body 202 can be crumpled with the help of a crumpling unit 40 for crumpling a sheet of paper in the prior art to obtain a buffer pad with a cross section that is close to a "Y" shape as shown in Figure 3 (b); the first body 201 and the second body 202 can also be rolled with the help of a rolling unit for rolling a sheet of paper in the prior art to obtain a buffer pad with a cross section that is close to a "Y" shape as shown in Figure 3 (b); the first body 201 and the second body 202 can also be rolled with the help of a rolling unit for rolling a sheet of paper in the prior art to obtain a buffer pad with a cross section that is close to a "Y" shape as shown in Figure 3 (b). A first fold 2011 and a second fold 2021 that can be fitted into each other are formed on the body 202 to form a buffer pad with a cross-section that is close to a "Y"-shaped structure as shown in Figure 5; or a first extension portion 241 near the bending portion 22 of either the first body 201 and the second body 202 can be formed by puncturing the first body 201 and the second body 202; and a first matching hole 242 that is integrally formed or processed on the other of the first body 201 and the second body 202 and for the first extension portion 241 to pass through, to form a buffer pad with a cross-section that is close to a "Y"-shaped structure as shown in Figures 10 and 15.

FIG. 21 exemplarily shows a method for preparing a cushioning pad according to a second embodiment of the present invention.

The difference between the method for preparing the cushion pad of this embodiment and the method for preparing the cushion pad of the first embodiment is that:

In some implementations, the following steps are further included after step S30:

S40 : cutting the cushion pad, wherein the cutting direction is not parallel to the length direction of the pad body 20 .

In step S40, the cushioning pad can be cut by an operator or by a cutting unit in the prior art to obtain cushioning pads of different lengths as needed; specifically, the cutting position can be at the position where the cushioning pad is formed or at the position of the raw material sheet.

By adopting the preparation method of the present invention, the dependence of the preparation of the cushioning pad on the raw material sheets with complex structures is avoided. Only ordinary paper sheets, such as single-layer paper sheets (multi-layer paper sheets can also be used, and the multi-layer paper sheets can be connected to each other or not connected to each other. Of course, the method of the present invention is also applicable to raw material sheets with complex structures) need to be used to prepare a cushioning pad including a bending portion 22 on the cushion body 20 that distinguishes the first body 201 and the second body 202, so that the cushioning pad has a three-dimensional structure with a cross-section that is close to a "V" shape or a "Y" shape, so that the prepared cushioning pad has a better cushioning effect than ordinary cushioning pads.

23 to 26 schematically illustrate an apparatus for manufacturing a cushioning pad according to at least one embodiment of the present invention.

As shown in FIG. 23 , the device for manufacturing a cushion pad includes a frame 30 and a bending unit 50; wherein the bending unit 50 is fixedly arranged relative to the frame 30, and the bending unit 50 is used to form a bending portion 22 on the cushion body 20 prepared by the crumpling unit 40, so as to form a first body 201 and a second body 202 on both sides of the cushion body 20 located at the bending portion 22. When using the device for manufacturing a cushion pad of the present invention, the cushion body 20 is bent by the bending unit 50, and the bending portion 22 is formed on the cushion body 20, so as to form a first body 201 and a second body 202 on both sides of the cushion body 20 located at the bending portion 22, and the ends of at least two adjacent sub-bodies 200 away from the bending portion 22 therebetween are formed with an opening 23, so that the cross section of the cushion pad is close to a "V" shape or a "Y" shape. Preferably, the extending direction of the bending portion 22 is arranged substantially along the length direction of the cushion body 20. Therefore, the device for manufacturing cushioning pads of the present invention can be used to sequentially complete the bending processing of ordinary raw material sheets (for example, single-layer paper sheets, or multi-layer paper sheets can be used, and the multi-layer paper sheets can be connected to each other or not connected to each other. Of course, the method of the present invention is also applicable to raw material sheets with complex structures), so as to conveniently and efficiently prepare cushioning pads with a stable three-dimensional structure with a cross-section close to a "V" shape or a "Y" shape and good three-dimensionality and cushioning effect, thereby avoiding the dependence of the preparation of the cushioning pad on raw material sheets with complex structures.

Preferably, the device for manufacturing a cushion pad further comprises a crumpling unit 40; wherein the crumpling unit 40 is fixedly arranged relative to the frame 30, and the crumpling unit 40 is used to crumple the raw material sheet to form the cushion body 20 having a crumpled area 21 with at least two wrinkles on the raw material sheet, and the wrinkles include crests 211 and/or troughs 212. Exemplarily, the bending unit 50 is arranged at the discharge end 102 of the crumpling unit 40. When the device for manufacturing a cushion pad of the present invention is used, first, a raw material sheet is crumpled by a crumpling unit 40 to form at least two wrinkles 21 on the raw material sheet, and the wrinkles 21 have crests 211 and/or troughs 212 to form a cushion body 20. The raw material sheet can be a paper sheet of packaging consumables, which can be a single-layer paper sheet or a multi-layer paper sheet. Moreover, the conveying direction of the raw material sheet by the crumpling unit 40 is also the length direction of the raw material sheet. Therefore, the crest line 2111 of the crest 211 and the trough line 2121 of the trough 212 of the cushion body 20 obtained by the crumpling unit 40 are not parallel to the length direction of the cushion body 20, and all the wrinkles 21 are arranged along the length direction of the raw material sheet. The structure of the obtained cushion body 20 with wrinkles 21 is shown in FIG22; then, the cushion body 20 with wrinkles 21 is bent by the bending unit 50 to form a bending portion 22 on the cushion body 20, so as to form a first body 201 and a second body 202 on both sides of the cushion body 20 located at the bending portion 22, respectively, and the extending direction of the bending portion 22 is substantially arranged along the length direction of the cushion body 20. Thus, the device for manufacturing a cushion pad of the present invention can sequentially complete the crumpling and bending processes of an ordinary raw material sheet, and conveniently and efficiently prepare a cushion pad having a three-dimensional structure with a cross section close to a "V" shape or a "Y" shape in addition to wrinkles and having good three-dimensionality and cushioning effect.

Further preferably, the device for manufacturing the cushion pad further comprises a shaping unit 60; wherein the shaping unit 60 is fixedly arranged relative to the frame 30, and the shaping unit 60 is used to roll at least one of the bending portion 22 of the cushion body 20 having the bending portion 22 obtained by the bending unit 50, the portion close to the bending portion 22 of the first body 201, and the portion close to the bending portion 22 of the second body 202, so as to further ensure that the cross section of the cushion pad is close to the "V" shape or the "Y" shape of the shaping unit 60. Exemplarily, the shaping unit 60 is arranged at the discharge end 102 of the bending unit 50. When the device for manufacturing a cushion pad of the present invention is used, the first body 201 and the second body 202 can be shaped by the shaping unit 60 to further ensure that the cross section of the cushion pad is close to a "V"-shaped structure, or to further ensure that at least a portion of the surface of the first body 201 close to the bending portion 22 and at least a portion of the surface of the second body 202 close to the bending portion 22 are mutually attached, so that the cross section of the cushion pad is in a "Y" shape. Thus, the device for manufacturing a cushion pad of the present invention can be used to conveniently and efficiently prepare a cushion pad that has a three-dimensional structure with a cross section close to a "V" or "Y" shape in addition to wrinkles and has good three-dimensionality and cushioning effect.

23 to 25 exemplarily show one embodiment of the crumpling unit 40. In this embodiment, the crumpling unit 40 includes at least one pair of upstream roller structures 41 and at least one pair of downstream roller structures 42 (for example, including one pair of upstream roller structures 41 and two pairs of downstream roller structures 42, or including two pairs of upstream roller structures 41 and two pairs of downstream roller structures 42), wherein the upstream roller structure 41 and the downstream roller structure 42 are a set of relative concepts, the upstream roller structure 41 is a pair of roller structures arranged upstream of the downstream roller structure 42 (i.e., on the side of the feed end 101), and the downstream roller structure 42 is a pair of roller structures arranged downstream of the upstream roller structure 41 (i.e., on the side of the discharge end 102), each pair of roller structures includes two roller bodies 401 whose outer diameters abut against each other, specifically, the roller body 401 is the roller body 401 commonly used in the prior art, and the conveying method of the pair of roller structures is also the same as the conveying method of the pair of roller structures in the prior art. Unless otherwise specifically emphasized, the present invention does not specifically limit this; and the linear speed of the downstream roller structure 42 is set to be lower than the linear speed of the upstream roller structure 41. Therefore, the crumpling process of the raw material sheet conveyed by the upstream and downstream roller structures 42 can be achieved through the linear speed difference between the upstream roller structure 41 and the downstream roller structure 42. The crumpling direction of the raw material sheet by the crumpling unit 40 is parallel to the feeding direction of the roller structure. The structure is simple and easy to realize automation.

As one preferred embodiment of the crumpling unit 40, as shown in FIG. 27, at least one roller body 401 in at least one of the upstream roller structure 41 and the downstream roller structure 42 is arranged at a position where the roller body 401 is located. The frame 30 is provided with a pressure unit 44 for applying pressure to the swing mechanism 43 so that the roller body 401 abuts against the outer periphery of another roller body 401 in the same set of roller structures. Exemplarily, as shown in FIG27 , one of the roller bodies 401 of the upstream roller structure 41 and the downstream roller structure 42 is pivotally connected to the swing mechanism 43, and the swing mechanism 43 is a swing arm pivotally arranged relative to the frame 30, with the pivot axis being the same as the first rotation axis 4011 of the roller body 401; the pressure unit 44 is a spring, one end of which is connected to the roller connected to the swing mechanism 43, and the other end is connected to the frame 30 or to the roller connected to the swing mechanism 43 of another pair of roller structures, and the spring is arranged to apply elastic force to the roller connected thereto against the other roller body 401 in the same pair of roller structures, so that the outer diameters of the two roller bodies 401 of the same pair of roller structures can always be kept in a state of abutting against each other, so that the roller structure having such a structure can clamp and convey the raw sheet even if the roller body 401 is worn.

Of course, the device of the present invention may also use other crumpling mechanisms commonly used in the prior art to crumple the raw material sheet. Unless otherwise specified, the present invention does not limit the specific structure of the crumpling unit 40.

As one of the preferred embodiments of the bending unit 50, as shown in Figures 23, 25 and 26, the bending unit 50 includes a support structure 51 for supporting the bottom surface of the cushion body 20, a height limiting structure 52 for limiting the upward movement of the cushion body 20, and a bending structure 53 for bending the cushion body 20 upward. Exemplarily, the support structure 51 is a support plate or a support block provided at one side of the discharge end 102 of the crumpling unit 40 and capable of providing support for the bottom surface of the cushion body 20. The support structure 51 can be a plate-like structure or a block-like structure, as long as the support structure 51 can provide support for the bottom surface of the cushion body 20 delivered by the crumpling unit 40. Exemplarily, the height limiting structure 52 is disposed above the support structure 51 (it can be directly above or obliquely above); the height limiting structure 52 is a height limiting block, a height limiting rod or a height limiting sheet, etc., which is disposed on one side of the discharge end 102 of the crumpling unit 40 and can limit the upward movement of the cushion body 20. As long as the height limiting structure 52 can limit the upward movement of the cushion body 20 delivered by the crumpling unit 40, it will be sufficient. Exemplarily, the bending structure 53 includes at least one group of first limiting plates 531 respectively disposed on both sides of the downstream roller structure 42, and the distance of the first limiting plates 531 located on both sides of the downstream roller structure 42 in a group of first limiting plates 531 on a horizontal plane perpendicular to the discharge direction decreases along the discharge direction (that is, the feeding direction), so that by disposing at least one group of first limiting plates 531 whose distance gradually decreases along the discharge direction, the cushion body 20 is affected by the support structure 51 and the limiting plate when moving along the discharge direction. The high structure 52 and the first limiting plate 531 gradually bend upward due to the combined effect to form a bending portion 22 on the pad body 20; when there are multiple groups of first limiting plates 531, the multiple groups of first limiting plates 531 are distributed along the feeding direction, and the multiple groups of first limiting plates 531 may be connected to each other or not. Preferably, the first limiting plates 531 on both sides of the downstream roller structure 42 in the multiple groups of first limiting plates 531 along the feeding direction are located at a distance perpendicular to the discharge direction on the horizontal plane that decreases along the discharge direction. Of course, when the placement of the device changes, the direction in which the pad body 20 flips under the action of the bending unit 50 will also change accordingly, such as bending downward, bending to the left or bending to the right. That is, the present invention does not specifically limit the bending direction, as long as the bending unit 50 can be bent along the length direction close to the pad body 20. The pad body 20 only needs to be bent.

In one preferred embodiment of the height limiting structure 52, as shown in Fig. 23, the height limiting structure 52 is located on the central axis of the downstream roller structure 42 parallel to the feeding direction. Thus, the symmetrical bending of the cushion body 20 can be achieved as much as possible, so that the first body 201 and the second body 202 both retain the pleated area 21, thereby ensuring the cushioning effect of the prepared cushion.

In another preferred embodiment of the height limiting structure 52, as shown in FIG25, the surfaces of the support structure 51 and the height limiting structure 52 that contact the pad body 20 are both located below the tangent surface of the downstream roller structure 42 (i.e., the abutting surfaces of the two roller bodies 401 in any pair of downstream roller structures 42). Such a setting can avoid the pad body 20 moving downward under the action of its own gravity, resulting in the pad body 20 being unable to move to the paper jam between the support structure 51 and the height limiting structure 52; and when the tangent surface of the downstream roller structure 42 and the surfaces of the support structure 51 and the height limiting structure 52 that contact the pad body 20 are not on the same horizontal plane, the bending line of the bending portion 22 can also form an arc line instead of a straight line in the direction of its extension (especially there is also a shaping unit 60 to shape the arc formed by it), as shown in FIG2, so as to further improve the three-dimensionality of the obtained buffer pad.

As one of the preferred embodiments of the bending unit 50, as shown in Figures 23 and 25, the bending unit 50 further includes a guide mechanism 54 for guiding the pad body 20 from the crumpling unit 40 to between the support structure 51 and the height limiting structure 52. Exemplarily, the guide mechanism 54 can be implemented as a guide block, a guide rod or a guide sheet, etc. Preferably, when the guide mechanism 54 is a guide rod, one end of the guide rod is connected to the bottom of the height limiting structure 52, and the other end of the guide rod is located above the tangent surface of the downstream roller structure 42, thereby further avoiding the paper jam caused by the pad body 20 being unable to move smoothly between the support structure 51 and the height limiting structure 52.

As one embodiment of the shaping unit 60, as shown in FIG. 23 and FIG. 25, the shaping unit 60 is a pair of roller bodies 401 abutting against each other, and the rotation axis of the roller body 401 of the shaping unit 60 is perpendicular to the first rotation axis 4011 of the upstream roller structure 41 and the downstream roller structure 42. The bending portion 22 and the pad body 20 near the bending portion 22 are rolled by the pair of roller bodies 401 of the shaping unit 60, and the bending portion 22 can be strengthened, for example, by pressing the first body 201 toward the second body 202 to shape the bending line of the bending portion 22, forming a buffer pad with a cross-section close to a "V"-shaped three-dimensional structure as shown in FIG. 1 (c), FIG. 4, FIG. 7 (b), FIG. 17 and FIG. 19 (b); or forming a first fold 2011 and a second fold 2021 that can be interlocked with each other on the first body 201 and the second body 202, forming a buffer pad with a cross-section close to a "Y"-shaped three-dimensional structure as shown in FIG. 5.

As another embodiment of the shaping unit 60, the shaping unit 60 is a pair of gears meshing with each other, and the second rotation axis of the gears is perpendicular to the first rotation axis 4011 of the upstream roller structure 41 and the downstream roller structure 42. The pair of gears of the shaping unit 60 rolls the bending portion 22 and the pad body 20 near it.

As another embodiment of the shaping unit 60, the shaping unit 60 is two extrusion plates connected by a moving mechanism, and the moving mechanism drives the extrusion plates to move in a direction parallel to the first rotating axis 4011 of the downstream roller structure 42. The moving mechanism can be, for example, an air cylinder, an oil cylinder or a linear motor.

In some preferred embodiments, as shown in FIG. 23 and FIG. 25, the contact surface of the crumpling unit 40 when in contact with the raw material sheet is perpendicular to the contact surface of the shaping unit 60 when in contact with the pad body 20, so that after the shaping unit 60 rolls at least one of the bending portion 22, the portion of the first body 201 close to the bending portion 22, and the portion of the second body 202 close to the bending portion 22, the cross section of the buffer pad can be close to a "V" shape, or at least a portion of the surface of the first body 201 close to the bending portion 22 can be made to fit with at least a portion of the surface of the second body 202 close to the bending portion 22, so that the cross section of the buffer pad is "Y" shaped. In this way, it can be ensured that the crest line 2111 and the trough line 2121 of the folds formed by the crumpling unit 40 are substantially non-parallel to the folds formed by shaping, so as to ensure the three-dimensionality of the prepared buffer pad. Preferably, the portion of the shaping unit 60 for rolling the first body 201 and the second body 202 is at least partially located above the support structure 51. Thereby, it can be ensured that the shaping unit 60 can effectively shape the pad body 20 .

In some preferred embodiments, as shown in Figures 23 to 25, the central axes of the crumpling unit 40, the bending unit 50 and the shaping unit 60 are the same central axis, thereby ensuring that the prepared cushioning pad has good symmetry, thereby ensuring that the cushioning pad can have a better cushioning effect.

In some preferred embodiments, as shown in FIG28 , the device for manufacturing a cushion pad further includes a control module 70; the control module 70 is configured to at least control the linear velocity of the upstream roller structure 41. Thus, the control module 70 can control the linear velocity of the upstream roller structure 41 to be slower than the linear velocity of the downstream roller structure 42, so that the cushion body 20 between the upstream roller structure 41 and the downstream roller structure 42 is broken due to the linear velocity difference between the two, thereby achieving the cutting of the cushion body 20.

As one of the implementations of the control module 70 controlling the linear velocity of the upstream roller structure 41 , the control module 70 controls the linear velocity of the outer diameter of the roller body 401 by controlling the rotational speed of the roller body 401 of the upstream roller structure 41 .

As another implementation method of the control module 70 controlling the linear velocity of the upstream roller structure 41, as shown in FIG29, the roller body 401 of the upstream roller structure 41 includes a first rotating shaft 4011, a stud 4013, at least two sliders 4014, at least two slide bars 4015, a pressure block 4016 and an elastic member 4018; wherein the slider 4014 is fixedly arranged relative to the first rotating shaft 4011, and each slide bar 4015 can slide relative to a slider 4014, specifically, the slide bar 4015 slides in the slideway of the slider 4014, and adjacent slide bars 4014 are connected to an elastic member 4018 (such as a spring), and the elastic member 4018 is in a stretched state. The slide bar 4015 has a tendency to slide toward the center of the first rotating shaft 4011; the stud 4013 is fixed relative to the first rotating shaft 4011; the pressure block 4016 is threadedly connected to the stud 4013; the end of the pressure block 4016 facing the first rotating shaft 4011 has a first inclined surface 40161, and the end of the slide bar 4015 close to the stud 4013 has a second inclined surface 40151 that fits the first inclined surface of the pressure block 4016; the end of the slide bar 4015 away from the stud 4013 is arc-shaped, and the center of the arc coincides with the center of the first rotating shaft 4011, so that the arcs on the multiple slide bars 4015 can form an approximately circular track. By rotating the pressing block 4016 (the driving device can be controlled by the control module 70 to drive the pressing block 4016 to rotate), the pressing block 4016 can be moved closer to or away from the first rotating shaft 4011. At the same time, the pressing block 4016 causes the second inclined surface 40151 and the sliding rod 4015 to move away from or closer to the stud 4013 through the first inclined surface 40161, thereby increasing or decreasing the radius of the approximately circular track formed by the plurality of sliding rods 4015. In some embodiments, the roller body 401 of the upstream roller structure 41 further includes a mounting plate 4012 on the basis of the previous embodiment. The mounting plate 4012 is fixedly arranged relative to the first rotating shaft 4011. The slider 4014 and the stud 4013 are fixed to the mounting plate 4012 to achieve relative fixation with the first rotating shaft 4011. Generally, the first rotating shaft 4011 is arranged on the side of the mounting plate 4013 away from the stud 4013. Preferably, the slideway in the slider 4014 is arranged along the radial direction of the first rotating shaft 4011. Preferably, the sliders 4014 are distributed along the circumference of the first rotating shaft 4011, and more preferably, the sliders 4014 are evenly distributed along the circumference of the first rotating shaft 4011. Preferably, a synchronous belt track 4017 is provided at one end of the sliding rod 4015 away from the stud 4013, and the synchronous belt track 4017 is arc-shaped, and the center of the arc coincides with the center of the first rotating shaft 4011, so that the arcs on the multiple sliding rods 4015 can form an approximately circular track.

In some preferred embodiments, as shown in Figure 28, the device for manufacturing a buffer pad also includes a control module 70 and at least one group of feed roller structures 80 arranged at the feed end 101 of the upstream roller structure 41, and the control module 70 is configured to at least control the linear speed of the feed roller structure 80. Specifically, the control module 70 controls the linear speed of the feed roller structure 80 by controlling the rotational speed of the roller body 401 of the feed roller structure 80, or by setting the structure of the roller body 401 of the feed roller structure 80 to a special structure, for example, setting it to a structure similar to the roller body 401 of the upstream roller structure 41, which will not be repeated here. Therefore, the control module 70 can be used to control the linear speed of the feed roller structure 80 to be lower than the linear speed of the upstream roller structure 41 or the downstream roller structure 42, so that the pad body 20 between the upstream roller structure 41 and the downstream roller structure 42, or the pad body 20 between the upstream roller structure 41 and the feed roller structure 80 is broken due to the linear speed difference between the feed roller structure 80 and the upstream roller structure 41 or the downstream roller structure 42, thereby achieving the cutting of the pad body 20; the pad body 20 can also be cut by a cutting unit, and the cutting unit can be set at any position as needed, for example, at the feed end 101 of the upstream roller structure 41, or between the upstream roller structure 41 and the downstream roller structure 42, or before the downstream roller structure 42 and the bending unit 50, or between the bending unit 50 and the shaping unit 60.

In some preferred embodiments, the device for manufacturing a cushion pad also includes a cutting unit for cutting the pad body 20. As one embodiment of the cutting unit, the cutting unit can be implemented by the aforementioned control module 70, the upstream roller structure 41 and the downstream roller structure 42, thereby, the control module 70 can be used to control the linear speed of the upstream roller structure 41 to be slower than the linear speed of the downstream roller structure 42, so as to cut the pad body 20 between the upstream roller structure 41 and the downstream roller structure 42 (i.e., the cutting unit 90 is formed by the upstream roller structure 41 and the downstream roller structure 42, as shown in FIG. 25 ). As another embodiment of the cutting unit, the cutting unit can be implemented by the aforementioned control module 70, the feed roller structure 80 and the upstream roller structure 41 or the downstream roller structure 42, thereby, the control module 70 can be used to control the linear speed of the feed roller structure 80 to be slower than the linear speed of the upstream roller structure 42. The linear speed of the structure 41 or the downstream roller structure 42 is adjusted to cut the raw material sheet between the feed roller structure 80 and the upstream roller structure 41 (i.e., the feed roller structure 80 and the upstream roller structure 41 form a cutting unit), or cut the raw material sheet or the cushion body 20 between the feed roller structure 80 and the downstream roller structure 42 (or the feed roller structure 80 and the downstream roller structure 42 form a cutting unit). As another embodiment of the cutting unit, the cutting unit includes a motion mechanism fixedly arranged relative to the frame 30, and a cutter that can move under the drive of the motion mechanism to cut the raw material sheet or the cushion body 20. The motion mechanism can be a cylinder, an oil cylinder or a linear motor. Thus, the cutter can cut the raw material sheet or the pad body 20 under the drive of the motion mechanism, and since the cutter can move, it can move to a position that does not affect the feeding or discharging of the raw material sheet or the pad body 20 after completing the cutting work, so as to ensure the smooth progress of production; and the cutting unit of this embodiment can be set at any position of the frame 30 as needed to cut the raw material sheet or the pad body 20 before the feed roller structure 80, the upstream roller structure 41, the downstream roller structure 42, the bending unit 50 or the shaping unit 60.

Specifically, the upstream roller structure 41, the downstream roller structure 42, and the feed roller structure 80 all have a driving device, such as a rotary motor, for driving the roller body 401 to rotate, and the control module 70 controls the linear speed of the roller body 401 by controlling the rotation speed of the rotary motor. When the crumpling unit 40 and the shaping unit 60 are not roller structures, as long as they have driving devices, these driving devices can also be connected to the control module 70, so that the movement sequence of these units can be controlled by the control module 70. Similarly, the cutting unit can also be connected to the control module 70, so that the cutting timing of the cutting unit can be controlled by the control module 70.

In some preferred embodiments, the cutting unit is arranged at the discharge end 102 of the shaping unit 60, so that even after the cutting unit cuts the pad body 20, the device for manufacturing the cushioning pad of the present invention can still be produced continuously to realize the automated production of the device.

In some preferred embodiments, as shown in Figure 25, it also includes a guide plate 100 arranged below the tangent surface of the two roller bodies 401 of the feed roller structure 80, or arranged below the tangent surface of the two roller structures 401 of the upstream roller structure 41 or the downstream roller structure 42, thereby, the guide plate 100 can provide support for the raw material sheet or the pad body 20.

In the present invention, the extension direction of the bending portion 22 is roughly arranged along the length direction of the pad body 20, and the angle range between the extension direction of the bending portion 22 and the length direction of the pad body 20 is within the angle range between the diagonal of the pad body 20 and its length direction.

In the present invention, connection or installation is a fixed connection unless otherwise specified. Fixed connection can be implemented as a detachable connection or a non-detachable connection commonly used in the prior art. The detachable connection can be implemented by the prior art, such as threaded connection or key connection. The non-detachable connection can also be implemented by the prior art, such as welding or gluing.

The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

A buffer pad is characterized in that it includes a pad body, the pad body is provided with N bending portions, wherein N≥1, so as to form N+1 sub-bodies on the pad body, and at least two adjacent sub-bodies have openings formed at their ends away from the bending portion therebetween.
The cushioning pad according to claim 1, characterized in that the bending portion comprises at least two bending sections and at least one overlapping portion;

The bending sections and overlapping portions in each bending portion are arranged alternately;

The bending segment forms a first bending line;

The overlapping portion includes at least two bending points and a second bending line located between adjacent bending points. The angle formed by the second bending line and the adjacent first bending line or second bending line ranges from 0° to 60°, and the first bending line and the second bending line in each bending portion are located in the same plane.
The cushioning pad according to claim 2 is characterized in that the number of the bending points is an even number.
The cushioning pad according to claim 2 is characterized in that at least a portion of the entire cushion body is in at least one of an arc shape, a spiral shape and a zigzag shape.
The cushioning pad according to claim 1 is characterized in that N ≥ 2, and the extension directions of at least two bent portions are the same.
The cushioning pad according to claim 1 is characterized in that the extending direction of the bent portion is not a straight line.
The cushioning pad according to claim 6 is characterized in that the ratio of the width of at least one sub-body to the width of at least another sub-body is in the range of 1/3-3.
The cushioning pad according to claim 6 is characterized in that the ratio of the total width to the total height of the cross-section of the cushion body is in the range of 1/2-2.
The cushioning pad according to any one of claims 1 to 8, characterized in that the pad body comprises at least two sheets that at least partially overlap in a thickness direction.
The cushioning pad according to any one of claims 1 to 8 is characterized in that at least parts of the surfaces of at least two adjacent sub-bodies close to the bending portion are in contact with each other.
The cushioning pad according to claim 10 is characterized in that at least a portion of the surface of at least one sub-body close to the bending portion and at least a portion of the surface of at least one adjacent sub-body close to the bending portion fit together under the action of a locking structure.
The cushioning pad according to claim 11, characterized in that the locking structure comprises a first extension portion provided at a position close to the bending portion of any one of two adjacent sub-bodies; and a first matching hole provided on the other sub-bodies for the first extension portion to pass through;

The sub-body provided with the first extension portion is also provided with a first through hole corresponding to the first matching hole;

The side of the first extension portion passing through the first matching hole is inclined toward the side away from the first matching hole, or the side of the first extension portion passing through the first matching hole is provided with at least one blocking portion, and the maximum width of the structure integrally formed by the blocking portion and the first extension portion is greater than the maximum width of the first matching hole.
The cushioning pad according to claim 11, characterized in that at least part of the surfaces of at least two adjacent sub-bodies close to the bending portion are abutted against each other to achieve:

Any one of the two adjacent sub-bodies also has a first fold, and the other of the two adjacent sub-bodies also has a second fold, and at least one first fold is embedded with at least one second fold to achieve partial surface bonding of the two adjacent sub-bodies at the embedded location.
The cushioning pad according to any one of claims 1 to 8, characterized in that at least two folds having crests and troughs are formed on at least one sub-body.
The cushioning pad according to claim 9, characterized in that at least two folds having crests and troughs are formed on at least one sub-body.
The cushioning pad according to claim 10, characterized in that at least two folds having crests and troughs are formed on at least one sub-body.
The method for preparing a cushion pad comprises the following steps:

S20: Bending the pad body to form N bending portions on the pad body, and dividing the pad body into N+1 sub-bodies through the bending portions, while forming openings at ends of at least two adjacent sub-bodies away from the bending portion therebetween.
The method for preparing a cushioning pad according to claim 17, characterized in that before step S20, the method further comprises the following steps:

S10: performing a crumpling process on the raw material sheet to form at least two wrinkles having crests and/or troughs on the raw material sheet to form a pad body.
The method for preparing a cushioning pad according to claim 18 is characterized in that, in step S10, when the raw material sheet is crumpled, the crest lines of the crests and the trough lines of the troughs of the formed wrinkles are not parallel to the length direction of the pad body.
The method for preparing a cushion pad according to any one of claims 17 to 19, characterized in that after step S20, the method further comprises the following steps:

S30: performing shaping processing on the sub-body.
The method for preparing a cushioning pad according to claim 20, characterized in that, after step S30, the method further comprises the following steps:

S40: cutting the formed cushion pad, wherein the cutting direction is not parallel to the length direction of the pad body.
A device for manufacturing a cushioning pad, characterized in that it comprises:

frame;

and a bending unit fixedly arranged relative to the frame and used to form N bending portions on the pad body, so as to separate the pad body into N+1 sub-bodies through the bending portions, and capable of forming an open bending unit at the ends of at least two adjacent sub-bodies away from the bending portion therebetween.
The device for manufacturing a cushioning pad according to claim 22, further comprising:

A crumpling unit is fixedly arranged relative to the frame and is used for crumpling the raw material sheet to form a pad body having a crumpled area with at least two wrinkles with peaks and/or troughs on the raw material sheet.
The device for manufacturing a cushioning pad according to claim 23 is characterized in that the crumpling unit includes at least one pair of upstream roller structures and at least one pair of downstream roller structures, and the linear speed of the downstream roller structure is set to be lower than the linear speed of the upstream roller structure.
The device for manufacturing a cushion pad according to claim 24 is characterized in that at least one roller body of the upstream roller structure and the downstream roller structure is arranged on the frame through a swing mechanism, and the frame is also provided with a pressure unit for applying pressure to the swing mechanism so that the roller body abuts against the outer periphery of another roller body in the same set of roller structures; and/or

The bending unit includes a supporting structure for supporting the bottom surface of the cushion body, a height limiting structure for limiting the upward movement of the cushion body, and a bending structure for bending the cushion body upward.
The device for manufacturing a cushioning pad according to claim 25 is characterized in that the surfaces of the supporting structure and the height limiting structure that are in contact with the pad body are both located below the tangent plane of the downstream roller structure.
The device for manufacturing a cushioning pad according to claim 26 is characterized in that the bending unit also includes a guiding mechanism for guiding the pad body from the crumpling unit to between the supporting structure and the height limiting structure.
The device for manufacturing a cushioning pad according to claim 26 is characterized in that the bending structure includes at least one group of first limit plates respectively arranged on both sides of the downstream roller structure, and the distance of the first limit plates on both sides of the downstream roller structure in a group of first limit plates on a horizontal plane perpendicular to the discharge direction decreases along the discharge direction; and/or

The height limiting structure is located on a central axis of the downstream roller structure that is parallel to the feeding direction.
The device for manufacturing a cushioning pad according to any one of claims 25 to 28 is characterized in that it also includes a shaping unit fixedly arranged relative to the frame and used for rolling the bent portion of the pad body with a bent portion obtained by processing by the bending unit and/or a portion of at least one sub-body close to the bent portion.
The device for manufacturing a cushioning pad according to claim 29 is characterized in that the contact surface of the crumpling unit when in contact with the raw material sheet is perpendicular to the contact surface of the shaping unit when in contact with the pad body.
The device for manufacturing a cushioning pad according to claim 29 is characterized in that the portion of the molding unit for rolling the sub-body is at least partially located above the supporting structure.
The device for manufacturing a cushion pad according to any one of claims 25 to 28, characterized in that it also includes a control module; the control module is configured to at least control the linear speed of the upstream roller structure; or

Also includes a control module and at least one group of feed roller structures arranged at the feed end of the upstream roller structure, the control module is configured to at least control the linear speed of the feed roller structure; or

The utility model further comprises a cutting unit for cutting the pad body.
The device for manufacturing a cushioning pad according to claim 29, characterized in that it also includes a control module; the control module is configured to at least control the linear speed of the upstream roller structure; or

Also includes a control module and at least one group of feed roller structures arranged at the feed end of the upstream roller structure, the control module is configured to at least control the linear speed of the feed roller structure; or

The utility model also comprises a cutting unit for cutting the pad body.