Paper pre-folding mechanism and paper pre-folding device

Abstract

The utility model provides a paper pre-folding mechanism and a paper pre-folding device, and the paper pre-folding mechanism comprises a folding assembly which is provided with a first paper passing channel for insulation paper to pass through, and the paper passing channel can enable the insulation paper to be gradually folded along a crease in the conveying direction of the insulation paper; and the rolling assembly is arranged at the downstream of the folding assembly and can roll the crease position of the insulation paper in the folded state. Thus, a secondary pre-folding mode is adopted to improve the pressing effect of the crease, the paper blocking problem caused by too large elasticity after the insulation paper is formed can be avoided, the problem that the insulativity of the insulation paper is damaged due to too deep crease can also be avoided, and the paper inserting procedure is smoothly carried out under the condition that the insulativity is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to a paper pre-folding mechanism and a paper pre-folding device. Background Art

[0002] The paper insertion process is a key process in the production line of hairpin flat wire stators, which determines the insulation quality of the flat wire stators, and thus determines the safety and stability of new energy drive motors. At present, the paper insertion process on the market generally adopts the paper pressing wheel to pre-press and then directly form the paper. If the pre-pressing crease is too deep, the insulation of the insulating paper will be unqualified. If it is too shallow, it will cause excessive rebound force after forming, resulting in greatly increased resistance during paper insertion and easy paper jam. Utility Model Content

[0003] In view of this, the present application provides a paper pre-folding mechanism and a paper pre-folding device, which can solve the problems of paper blocking and poor insulation.

[0004] In order to achieve the above objectives, this application provides the following technical solutions:

[0005] A paper pre-folding mechanism, comprising:

[0006] A folding assembly, comprising a first paper passage for insulating paper to pass through, wherein the shape of the first paper passage changes gradually in the conveying direction of the insulating paper so as to enable the insulating paper to be gradually folded along a crease;

[0007] The rolling assembly is arranged downstream of the folding assembly and is capable of rolling the folding position of the insulating paper in a folded state.

[0008] Optionally include:

[0009] The unfolding assembly is arranged downstream of the rolling assembly and is used to unfold the insulating paper in a folded state along the folding line.

[0010] Optionally, the folding components all have a second paper passing channel for the insulating paper to pass through, and in the conveying direction of the insulating paper, the shape of the second paper passing channel changes gradually so that the insulating paper can be gradually unfolded along the fold.

[0011] Optionally, the first paper passing channel and the second paper passing channel both include a plurality of paper passing holes for the insulating paper to pass through in sequence, the paper passing holes having a bending portion for bending the insulating paper along the crease, and the bending angles of the bending portions of the plurality of paper passing holes gradually change along the conveying direction of the insulating paper so that the bending degree of the insulating paper along the crease caused by the plurality of paper passing holes gradually changes.

[0012] Optionally, a plurality of bending portions are provided on the paper passing hole; in the folding component, the plurality of bending portions can cause the insulating paper to be folded along a plurality of folds at the same time; in the unfolding component, the plurality of bending portions can cause the insulating paper to be unfolded along a plurality of folds at the same time.

[0013] Optionally, the folding assembly and the unfolding assembly both include a plurality of pre-folding blocks arranged at intervals, and the plurality of paper feeding holes are arranged one-to-one on the plurality of pre-folding blocks.

[0014] Optionally, the rolling assembly comprises:

[0015] The first rolling wheel and the second rolling wheel can move closer to and farther from each other, and a rolling gap is formed between the first rolling wheel and the second rolling wheel for the insulating paper to pass through;

[0016] The adjusting structure is connected to the first rolling wheel and / or the second rolling wheel, and is used to drive the first rolling wheel and the second rolling wheel to move closer to and away from each other.

[0017] A paper pre-folding device, comprising:

[0018] A creasing mechanism, used to press creases into the insulating paper;

[0019] The paper pre-folding mechanism is configured as the paper pre-folding mechanism described in any one of the above items.

[0020] Optionally, a plurality of the paper pre-folding mechanisms are provided at intervals and arranged along the conveying direction of the insulating paper, so as to respectively roll a plurality of different fold positions of the insulating paper in the folding device.

[0021] Optionally, it comprises a bottom plate and a side plate connected to the bottom plate, and at least one of the paper pre-folding mechanisms is disposed on both the bottom plate and the side plate.

[0022] Optionally, a plurality of transition wheels are included, and the plurality of transition wheels are located between two adjacent paper pre-folding mechanisms and are used to guide the conveying direction of the insulating paper.

[0023] Optionally, the creasing mechanism includes a first paper pressing wheel and a second paper pressing wheel, and the first paper pressing wheel and the second paper pressing wheel are respectively provided with a paper pressing protrusion and a paper pressing groove, and the paper pressing protrusion can press the insulating paper into the paper pressing groove to form the crease on the insulating paper.

[0024] The paper pre-folding mechanism and paper pre-folding device provided by the present application, in the paper insertion process, after the crease is pressed on the insulating paper, before the insulating paper is formed and inserted, the insulating paper passes through the first paper passing channel. Due to the gradual change in the shape of the first paper passing channel, the angle formed by the two parts on both sides of the crease on the insulating paper is gradually changed, which is conducive to improving the accuracy and stability of the folding of the insulating paper, and then the crease position of the folded insulating paper is rolled by the rolling component. In the case of shallow creases, the pressing effect of the crease is improved by a secondary pre-folding method, which can avoid the problem of paper blocking caused by excessive elasticity after the insulating paper is formed, and can also avoid the problem of damaging the insulation of the insulating paper due to too deep creases, and smoothly carry out the paper insertion process while ensuring insulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0026] Figure 1 A structural diagram of a paper pre-folding device according to some embodiments;

[0027] Figure 2 A front view of a paper pre-folding device shown in some embodiments;

[0028] Figure 3 The main view of the pre-folded block shown in some embodiments Figure 1 ;

[0029] Figure 4 The main view of the pre-folded block shown in some embodiments Figure 2 ;

[0030] Figure 5 The main view of the pre-folded block shown in some embodiments Figure 3 ;

[0031] Figure 6 The main view of the pre-folded block shown in some embodiments Figure 4 ;

[0032] Figure 7 The main view of the pre-folded block shown in some embodiments Figure 5 ;

[0033] Figure 8 A cross-sectional view of an indentation mechanism shown in some embodiments;

[0034] Fig. 9 for Figure 8 A partial enlarged view of the .

[0035] In the figure: 11, the first paper pressing wheel; 12, the second paper pressing wheel; 13, the paper pressing protrusion; 14, the paper pressing groove; 2, the folding component; 21, the paper passing hole; 3, the rolling component; 31, the adjusting structure; 301, the first rolling bearing; 302, the second rolling bearing; 303, the third rolling bearing; 4, the unfolding component; 5, the transition wheel; 6, the bottom plate; 7, the side plate; 8, the insulating paper; 201, the first pre-pressing block; 202, the second pre-pressing block; 203, the third pre-pressing block; 204, the fourth pre-pressing block; 205, the fifth pre-pressing block; 206, the sixth pre-pressing block; 207, the seventh pre-pressing block; 208, the eighth pre-pressing block; 209, the ninth pre-pressing block; 210, the tenth pre-pressing block; 211, the eleventh pre-pressing block; 212, the twelfth pre-pressing block; 213, the thirteenth pre-pressing block. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] like Figure 1-Figure 9 As shown, an embodiment of the present application provides a paper pre-folding mechanism, including a folding component 2 and a rolling component 3.

[0038] The folding component 2 is used to fold the insulating paper 8 along the crease so that the two parts located on both sides of the crease are folded relative to the crease, so that the insulating paper 8 is folded and attached together, which is conducive to converting the insulating paper 8 from an unfolded state to a folded state through the folding component 2.

[0039] Among them, before the insulating paper 8 is conveyed to the folding component 2, the insulating paper 8 needs to be pressed by a creasing mechanism to form creases on the insulating paper 8. Specifically, four creases are formed on the insulating paper 8 after passing through the creasing mechanism, which are defined here as the first crease, the second crease, the third crease and the fourth crease. The first crease and the second crease are located in the middle of the insulating paper 8, and the third crease and the fourth crease are respectively located at the two sides of the insulating paper 8. The above-mentioned creases can be any one or more of the four creases.

[0040] In this solution, the folding component 2 includes a first paper-passing channel, which can be used for the insulating paper 8 to pass through. In the conveying direction of the insulating paper 8, the shape of the first paper-passing channel changes gradually. The insulating paper 8 passes through the first paper-passing channel. Under the action of the first paper-passing channel, the insulating paper 8 is gradually folded along the crease. For example, when the insulating paper 8 enters through the first paper-passing channel, the angle formed by the two parts on both sides of the crease on the insulating paper 8 is 120 degrees; when the insulating paper 8 passes through the middle of the first paper-passing channel, the angle formed by the two parts on both sides of the crease on the insulating paper 8 is 90 degrees; when the insulating paper 8 is output from the first paper-passing channel, the angle formed by the two parts on both sides of the crease on the insulating paper 8 is 30 degrees. In this way, the angle formed by the two parts on both sides of the crease on the insulating paper 8 changes gradually through the shape of the first paper-passing channel, which is conducive to improving the accuracy and stability of the folding of the insulating paper 8.

[0041] The rolling assembly 3 is arranged downstream of the folding assembly 2, and is used to roll the fold position on the insulating paper 8 in the folded state. The folded state can be formed when the insulating paper 8 is output by the folding assembly 2, or when the insulating paper 8 enters the rolling assembly 3. When the insulating paper 8 is in the folded state, one side of the insulating paper 8 is the position where the fold is located, that is, the fold position. By rolling the fold position, the pressing effect of the fold can be greatly improved, so as to facilitate the molding of the insulating paper 8.

[0042] In the paper insertion process, after the crease is pressed on the insulating paper 8 and before the insulating paper 8 is formed and inserted, the insulating paper 8 passes through the first paper passing channel. Due to the gradual change in the shape of the first paper passing channel, the angle formed by the two parts on both sides of the crease on the insulating paper 8 is gradually changed, which is conducive to improving the accuracy and stability of the folding of the insulating paper 8. Then, the crease position of the folded insulating paper 8 is rolled by the rolling component 3. In the case of shallow creases, the pressing effect of the crease is improved by using a secondary pre-folding method, which can avoid the problem of paper blocking caused by excessive elasticity after the insulating paper 8 is formed, and the problem of damaging the insulation of the insulating paper 8 due to too deep creases can be avoided. The paper insertion process can be carried out smoothly while ensuring the insulation.

[0043] In some preferred embodiments, the first paper passage can be set as an integral passage or as a passage composed of multiple parts. Here, the first paper passage includes multiple paper passage holes 21, and the multiple paper passage holes 21 are arranged at intervals to allow the insulating paper 8 to pass through in sequence. In this way, the first paper passage is facilitated to be processed by the form of multiple paper passage holes 21 being arranged at intervals.

[0044] like Figure 3-7As shown, the paper hole 21 has a bending portion, which is bent to form a V shape. When the insulating paper 8 passes through the paper hole 21, the insulating paper 8 is limited by the bending portion, so that the insulating paper 8 is folded along the crease. At this time, the folding angle of the insulating paper 8 matches the bending angle of the bending portion. The bending angles of the bending portions of the multiple paper holes 21 are different, and gradually decrease along the conveying direction of the insulating paper 8, so that the folding angle of the insulating paper 8 is gradually reduced, and then gradually transformed from the unfolded state to the folded state, so as to facilitate the subsequent rolling of the rolling assembly 3.

[0045] Here, the paper feeding hole 21 may be provided with one bending portion, or may be provided with multiple bending portions, for example, Figure 6 , 7 As shown, the number of bending parts on the same paper hole 21 is two, and they are respectively located on both sides of the paper hole 21, and the two bending parts are respectively used to fold the third fold and the fourth fold on the insulating paper 8. In this way, through a group of paper holes 21 (folding components 2), the insulating paper 8 can be folded along multiple folds at the same time, so as to roll multiple folding positions on the insulating paper 8 at the same time, which is conducive to improving the folding paper pressing efficiency.

[0046] In a specific solution, the folding assembly 2 includes a plurality of pre-folding blocks, each of which is provided with a paper-passing hole 21. In this way, the paper-passing hole 21 is supported by the pre-folding block, which is conducive to improving the structural stability. The pre-folding block has two detachable parts, one of which is provided with a paper-passing groove, and the other is provided with a paper-passing protrusion. After the two parts are assembled, the paper-passing protrusion is located in the paper-passing groove, and the paper-passing hole 21 is formed between the paper-passing protrusion and the paper-passing groove.

[0047] In some embodiments, an unfolding component 4 is provided downstream of the rolling component 3, and the unfolding component 4 is used to unfold the insulating paper 8 in a folded state, so that the insulating paper 8 is converted from the folded state to the unfolded state, so as to facilitate rolling of other folds in subsequent processes, which is beneficial to the smooth and stable conveying of the insulating paper 8 by the two adjacent paper pre-folding mechanisms, and prevent the insulating paper 8 from being damaged.

[0048] Among them, the unfolding component 4 includes a second paper-passing channel, which can be used for the insulating paper 8 to pass through. In the conveying direction of the insulating paper 8, the shape of the second paper-passing channel changes gradually, and the insulating paper 8 passes through the second paper-passing channel. Under the action of the second paper-passing channel, the insulating paper 8 gradually unfolds along the fold. For example, when the insulating paper 8 enters through the second paper-passing channel, the angle formed by the two parts on both sides of the fold on the insulating paper 8 is 30 degrees; when the insulating paper 8 passes through the middle of the second paper-passing channel, the angle formed by the two parts on both sides of the fold on the insulating paper 8 is 90 degrees; when the insulating paper 8 is output from the second paper-passing channel, the angle formed by the two parts on both sides of the fold on the insulating paper 8 is 120 degrees. In this way, the angle formed by the two parts on both sides of the fold on the insulating paper 8 changes gradually through the shape of the second paper-passing channel, which is conducive to improving the accuracy and stability of the unfolding of the insulating paper 8.

[0049] The first paper-passing channel and the second paper-passing channel have similar structures, and have structures such as multiple paper-passing holes 21 and multiple pre-folding blocks. The difference is that in the second paper-passing channel, the bending angle of the bending portion on the paper-passing hole 21 gradually increases along the conveying direction of the insulating paper 8, so that the folding angle of the insulating paper 8 gradually increases, and then gradually transforms from a folded state to an unfolded state, so as to facilitate rolling of other creases.

[0050] In some embodiments, the rolling assembly 3 includes a first rolling hole and a second rolling wheel, the first rolling wheel and the second rolling wheel are arranged side by side and at intervals, and a rolling gap is formed between the outer peripheral surface of the first rolling wheel and the outer peripheral surface of the second rolling wheel for the insulating paper 8 to pass through. In the paper pre-folding process, the first rolling wheel and the second rolling wheel are respectively located on the two sides of the insulating paper 8, and roll along the insulating paper 8 to roll at the fold position of the insulating paper 8. Specifically, the first rolling wheel and the second rolling wheel are both configured as rolling bearings, and the two rolling bearings are respectively abutted against the two sides of the insulating paper 8.

[0051] The first rolling wheel and the second rolling wheel can move closer to or farther away from each other so that the rolling gap between the first rolling wheel and the second rolling wheel becomes larger or smaller. By adjusting the rolling gap, it can be suitable for insulating papers 8 of different thicknesses, and the rolling force applied to the insulating paper 8 can be adjusted, thereby adjusting the pressing effect of the creases of the insulating paper 8.

[0052] The rolling assembly 3 includes an adjusting structure 31, which is connected to at least one of the first rolling wheel and the second rolling wheel to drive the movement thereof, thereby driving the first rolling wheel and the second rolling wheel to move closer to or away from each other, so that the rolling gap becomes larger or smaller.

[0053] Specifically, the adjustment structure 31 can be set to a cylinder structure, a motor structure, a lead screw nut structure, an adjustment screw structure, etc., which can drive the first rolling wheel and the second rolling wheel to move closer to or away from each other.

[0054] The embodiment of the present application provides a paper pre-folding device, including an indentation mechanism and a paper pre-folding mechanism. The paper pre-folding mechanism is configured as the paper pre-folding mechanism in the above embodiment. In the paper insertion process, the insulating paper 8 is folded along the crease by the folding component 2, and then the crease position of the folded insulating paper 8 is rolled by the rolling component 3. The secondary pre-folding method is used to improve the pressing effect of the crease, which can avoid the paper blocking problem caused by the excessive elastic force of the insulating paper 8 after forming, and can also avoid the problem of damaging the insulation of the insulating paper 8 due to the crease being too deep, and the paper insertion process can be carried out smoothly while ensuring the insulation.

[0055] The creasing mechanism is arranged at the upstream position of the paper pre-folding mechanism, and is used to press the insulating paper 8 to form a crease on the insulating paper 8. During the working process, the insulating paper first passes through the creasing mechanism to form a crease on the insulating paper, and then passes through the paper pre-folding mechanism to perform a second re-pressing on the crease. Specifically, the creasing mechanism includes a first pressing wheel 11 and a second pressing wheel 12, and the first pressing wheel 11 and the second pressing wheel 12 are respectively provided with a pressing protrusion 13 and a pressing groove 14, and the pressing protrusion 13 is embedded in the pressing groove 14. In the pressing process of the insulating paper 8, the first pressing wheel 11 and the second pressing wheel 12 are respectively abutted against the two sides of the insulating paper 8, and the pressing protrusion 13 can press the insulating paper 8 into the pressing groove 14 to form a crease on the insulating paper 8. For example, the structure of the pressing protrusion 13 and the pressing groove 14 is provided with four groups, and four creases are formed on the insulating paper 8 by pressing.

[0056] In this solution, one creasing mechanism is provided, and multiple (for example, three) paper pre-folding mechanisms are provided, and are sequentially arranged downstream of the creasing mechanism along the conveying direction of the insulating paper 8. In this way, multiple folds (for example, the first fold, the second fold, the third fold, and the fourth fold) pressed by the creasing mechanism can be rolled by different paper pre-folding mechanisms, thereby improving the pressing effect of multiple folds.

[0057] The paper pre-folding device includes a bottom plate 6 and a side plate 7. The bottom plate 6 is connected to the bottom of the side plate 7, and the bottom plate 6 and the side plate 7 are connected to form an L-shaped plate structure. At least one paper pre-folding mechanism is provided on each of the bottom plate 6 and the side plate 7. For example, two paper pre-folding mechanisms are provided on the bottom plate 6, and one paper pre-folding mechanism is provided on the side plate 7. In this way, a three-dimensional structure is formed by the bottom plate 6 and the side plate 7, which is conducive to saving space.

[0058] A plurality of transition wheels 5 (for example, two) are rotatably connected to the side plate 7. The plurality of transition wheels 5 are arranged between two adjacent paper pre-folding mechanisms to guide the conveying direction of the insulating paper 8 so as to guide the insulating paper 8 from the paper pre-folding mechanism on the bottom plate 6 to the paper pre-folding mechanism on the side plate 7.

[0059] The paper pre-folding device will be described in detail below in conjunction with the above embodiments.

[0060] Three paper pre-folding mechanisms are arranged at intervals, namely, a first paper pre-folding mechanism, a second paper pre-folding mechanism and a third paper pre-folding mechanism. The first paper pre-folding mechanism and the second paper pre-folding mechanism are arranged on the bottom plate 6, and are used to roll the first fold and the second fold respectively. The third paper pre-folding mechanism is arranged on the side plate 7, and is used to roll the third fold and the fourth fold.

[0061] In the first paper pre-folding mechanism, the first pre-folding block 201, the second pre-folding block 202, the third pre-folding block 203 and two first rolling bearings 301 are arranged in sequence along the conveying direction of the insulating paper 8. Among them, the first pre-folding block 201, the second pre-folding block 202, and the third pre-folding block 203 are all provided with a paper passing hole 21, and the bending angles of the bending parts on the three paper passing holes 21 gradually decrease, such as 120 degrees, 90 degrees and 30 degrees respectively, so that the insulating paper 8 is gradually folded along the first fold. The two first rolling bearings 301 are respectively abutted against the two sides of the insulating paper 8, and are used to roll the first fold position of the insulating paper 8 in a folded state to enhance the pressing effect of the first fold.

[0062] In the second paper pre-folding mechanism, the fourth pre-folding block 204, the fifth pre-folding block 205, the sixth pre-folding block 206, two second rolling bearings 302, the seventh pre-folding block 207, the eighth pre-folding block 208 and the ninth pre-folding block 209 are arranged in sequence along the conveying direction of the insulating paper 8. Among them, the fourth pre-folding block 204, the fifth pre-folding block 205, and the sixth pre-folding block 206 are all provided with a paper passing hole 21, and the bending angles of the bending parts on the three paper passing holes 21 gradually decrease, such as 120 degrees, 90 degrees and 30 degrees respectively, so that the insulating paper 8 is gradually folded along the second fold. The two second rolling bearings 302 are respectively abutted against the two sides of the insulating paper 8, and are used to roll the second fold position of the insulating paper 8 in a folded state to enhance the pressing effect of the second fold. The seventh pre-folding block 207, the eighth pre-folding block 208 and the ninth pre-folding block 209 are all provided with paper passing holes 21, and the bending angles of the bending portions on the three paper passing holes 21 gradually increase, for example, 30 degrees, 90 degrees and 120 degrees respectively, so that the insulating paper 8 gradually unfolds along the second fold line.

[0063] In the third paper pre-folding mechanism, the tenth pre-folding block 210, the eleventh pre-folding block 211, four third rolling bearings 303, the twelfth pre-folding block 212 and the thirteenth pre-folding block 213 are sequentially arranged in the conveying direction of the insulating paper 8. Among them, the tenth pre-folding block 210 and the eleventh pre-folding block 211 are both provided with a paper passing hole 21, and the two paper passing holes 21 are both provided with two bending parts, and the bending angles of the bending parts of the two paper passing holes 21 are gradually reduced, for example, 90 degrees and 30 degrees respectively, so that the insulating paper 8 is gradually folded along the third fold and the fourth fold at the same time. Among the four third rolling bearings 303, two of the third rolling bearings 303 are respectively abutted against the two sides of the third fold position of the insulating paper 8, and are used to roll the third fold position of the insulating paper 8 in a folded state, and the other two third rolling bearings 303 are respectively abutted against the two sides of the fourth fold position of the insulating paper 8, and are used to roll the fourth fold position of the insulating paper 8 in a folded state, so as to enhance the pressing effect of the third fold and the fourth fold. The twelfth pre-folding block 212 and the thirteenth pre-folding block 213 are both provided with a paper passing hole 21, and the two paper passing holes 21 are both provided with two bending parts, and the bending angles of the bending parts on the two paper passing holes 21 gradually increase, such as 30 degrees and 90 degrees respectively, so that the insulating paper 8 is gradually unfolded along the third fold and the fourth fold at the same time.

[0064] Two transition wheels 5 are arranged between the second paper pre-folding mechanism and the third paper pre-folding mechanism to guide the insulating paper 8 on the second paper pre-folding mechanism to the third paper pre-folding mechanism.

[0065] It should be noted that in the above-mentioned first paper pre-folding mechanism, the second paper pre-folding mechanism and the third paper pre-folding mechanism, in the conveying direction of the insulating paper, the two adjacent ones are spaced apart to leave enough distance for the insulating paper to deform (fold or unfold or switch creases), thereby avoiding the problem that the spacing between the two adjacent paper pre-folding mechanisms is too small, causing the insulating paper to be torn and damaged. Similarly, in the conveying direction of the insulating paper, the two adjacent pre-folding blocks are spaced apart to leave enough distance between the two adjacent paper holes, for the insulating paper to deform (fold or unfold or switch creases), thereby avoiding the problem that the spacing between the two adjacent paper holes is too small, causing the insulating paper to be torn and damaged. Among them, the spacing setting between the two adjacent pre-folding blocks needs to be adaptively adjusted according to the parameters of the insulating paper (such as the conveying speed, the change in the bending angle of the two adjacent paper holes, etc.).

[0066] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0067] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

[0068] It should also be noted that in the apparatus, device and method of the present application, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0069] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0070] It should be understood that the qualifiers "first", "second", "third", "fourth", "fifth" and "sixth" used in the description of the embodiments of the present application are only used to more clearly explain the technical solutions and cannot be used to limit the scope of protection of the present application.

[0071] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A paper pre-folding mechanism, characterized in that: include: A folding assembly, comprising a first paper passage for insulating paper to pass through, wherein the shape of the first paper passage changes gradually in the conveying direction of the insulating paper so as to enable the insulating paper to be gradually folded along a crease; The rolling assembly is arranged downstream of the folding assembly and is capable of rolling the folding position of the insulating paper in a folded state.

2. The paper pre-folding mechanism according to claim 1, characterized in that: include: The unfolding assembly is arranged downstream of the rolling assembly and is used to unfold the insulating paper in a folded state along the folding line.

3. The paper pre-folding mechanism according to claim 2, characterized in that: The folding components all have a second paper passage for the insulating paper to pass through. In the conveying direction of the insulating paper, the shape of the second paper passage changes gradually so that the insulating paper can be gradually unfolded along the fold.

4. The paper pre-folding mechanism according to claim 3, characterized in that: The first paper-passing channel and the second paper-passing channel both include a plurality of paper-passing holes for the insulating paper to pass through in sequence, the paper-passing holes having a bending portion for bending the insulating paper along the fold, and the bending angles of the bending portions of the plurality of paper-passing holes gradually change along the conveying direction of the insulating paper so that the bending degree of the insulating paper along the fold caused by the plurality of paper-passing holes gradually changes.

5. The paper pre-folding mechanism according to claim 4, characterized in that: The paper-passing hole is provided with a plurality of bending portions; in the folding assembly, the plurality of bending portions can cause the insulating paper to be folded along the plurality of folds at the same time; in the unfolding assembly, the plurality of bending portions can cause the insulating paper to be unfolded along the plurality of folds at the same time.

6. The paper pre-folding mechanism according to claim 4, characterized in that: The folding assembly and the unfolding assembly both include a plurality of pre-folding blocks that are spaced apart from each other, and the plurality of paper feeding holes are arranged one-to-one on the plurality of pre-folding blocks.

7. The paper pre-folding mechanism according to claim 1, characterized in that: The rolling assembly comprises: The first rolling wheel and the second rolling wheel can move closer to and farther from each other, and a rolling gap is formed between the first rolling wheel and the second rolling wheel for the insulating paper to pass through; The adjusting structure is connected to the first rolling wheel and / or the second rolling wheel, and is used to drive the first rolling wheel and the second rolling wheel to move closer to and away from each other.

8. A paper pre-folding device, characterized in that: include: A creasing mechanism, used to press creases into the insulating paper; The paper pre-folding mechanism is configured as the paper pre-folding mechanism described in any one of claims 1-7.

9. The paper pre-folding device according to claim 8, characterized in that: A plurality of the paper pre-folding mechanisms are arranged at intervals and along the conveying direction of the insulating paper, so as to respectively roll a plurality of different fold positions of the insulating paper in the folding device.

10. The paper pre-folding device according to claim 8, characterized in that: It comprises a bottom plate and a side plate connected to the bottom plate, and at least one paper pre-folding mechanism is arranged on each of the bottom plate and the side plate.

11. The paper pre-folding device according to claim 10, characterized in that: It comprises a plurality of transition wheels, which are located between two adjacent paper pre-folding mechanisms and are used to guide the conveying direction of the insulating paper.

12. The paper pre-folding device according to claim 8, characterized in that: The creasing mechanism comprises a first paper pressing wheel and a second paper pressing wheel, wherein the first paper pressing wheel and the second paper pressing wheel are respectively provided with a paper pressing protrusion and a paper pressing groove, and the paper pressing protrusion can press the insulating paper into the paper pressing groove to form the crease on the insulating paper.

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