A kind of automatic folding device and method of corrugated paper

Abstract

The present invention discloses an automatic folding device and method for corrugated paper, the device comprises a conveying mechanism and a folding guide mechanism; the folding mechanism comprises a first folding guide mechanism and a second folding guide mechanism; the first folding guide mechanism comprises a folding guide rod; the second folding guide mechanism comprises a folding guide wheel group and a folding guide driving mechanism; the arrangement direction of multiple groups of folding guide wheel groups is parallel to the conveying direction of the corrugated paper; each group of folding guide wheel groups comprises an upper folding guide wheel and a lower folding guide wheel, the axes of the upper folding guide wheel and the lower folding guide wheel are both extended horizontally; the upper folding guide wheel and the lower folding guide wheel are both provided with a truncated cone-shaped wheel surface; the folding guide wheel and the lower folding guide wheel of the same group are arranged in opposite directions, and the slopes of the wheel surfaces of the upper folding guide wheel and the lower folding guide wheel of the same group are the same. The present invention can cause the corrugated board to flip according to a set route in the front stage of folding, which is conducive to improving the folding quality.

Description

Technical Field

[0001] The invention relates to a corrugated paper processing technology, and in particular to an automatic corrugated paper folding device and method. Background Art

[0002] Corrugated cardboard is a multi-layer adhesive body, which consists of at least one layer of corrugated core paper and one layer of cardboard. It has high mechanical strength and can withstand collisions and falls during transportation. The actual performance of corrugated boxes depends on three factors: the characteristics of the core paper and cardboard and the structure of the box itself. With its superior performance and good processing performance, corrugated boxes have gradually replaced wooden boxes and other transport packaging containers and become the main force of transport packaging. In addition to protecting goods, facilitating warehousing and transportation, it also plays a role in beautifying and promoting goods.

[0003] In the existing corrugated paper processing process, the corrugated paperboard is sent out from the feeding mechanism, and is successively transported to the printing mechanism, the cutting mechanism, the folding guide mechanism and the bonding mechanism through the conveying mechanism for processing to form a carton in a folded state, and finally collected and packaged. Further, in the folding process, generally, creases are first pressed on the corrugated board, and then the part to be folded is guided and folded by the guide rod, for example, the invention application with the application publication number of CN 111605243A discloses a box gluing and folding device for an ultra-large corrugated paper printing linkage line.

[0004] The above folding device has the following disadvantages:

[0005] 1. During creasing, the crease formed is not an absolute standard, but there are deviations of varying degrees, which will become an erroneous guide during folding, causing the folded carton to have an incorrect posture, seriously affecting the quality of the carton.

[0006] 2. Although the folding guide rod is used to guide the folding surface of the corrugated board so that it can gradually turn over and fold on the adjacent surface, the folding guide rod is far away from the crease and only serves as a guide. It does not fold the folding surface of the corrugated board along the specified route. Uneven folding and non-fitting folding may occur, and the folding quality needs to be improved. Summary of the invention

[0007] The purpose of the present invention is to overcome the above-mentioned problems and provide an automatic folding device for corrugated paper, which can prompt the corrugated board to flip along a set route in the front stage of folding, deepen or correct the creases of the corrugated paper, provide more obvious and standard guidance for folding, and help improve the folding quality.

[0008] Another object of the present invention is to overcome the above-mentioned problems and provide a method for automatically folding corrugated paper.

[0009] The purpose of the present invention is achieved through the following technical solutions:

[0010] An automatic corrugated paper folding device comprises a conveying mechanism and a folding guiding mechanism;

[0011] The folding guide mechanism comprises a first folding guide mechanism and a second folding guide mechanism;

[0012] The first folding guide mechanism comprises a folding guide rod; along the conveying direction of the corrugated paper, the folding guide rod comprises an ascending guide section for turning up the folding surface of the corrugated board and a descending guide section for pressing down the folding surface of the corrugated board;

[0013] The second folding guide mechanism is arranged on the side of the rising guide section of the folding guide rod close to the corrugated paper conveying center, and the second folding guide mechanism includes a folding guide wheel group and a folding guide driving mechanism; the folding guide wheel group is provided with multiple groups and is arranged in a straight line along the horizontal direction, and the arrangement direction of the multiple groups of folding guide wheel groups is parallel to the conveying direction of the corrugated paper; each group of folding guide wheel groups includes an upper folding guide wheel and a lower folding guide wheel respectively located above and below the corrugated paper, and the axes of the upper folding guide wheel and the lower folding guide wheel are extended horizontally; the upper folding guide wheel and the lower folding guide wheel are both provided with a truncated cone-shaped wheel surface; the upper folding guide wheel and the lower folding guide wheel of the same group are arranged in opposite directions, and the slopes of the wheel surfaces of the upper folding guide wheel and the lower folding guide wheel of the same group are the same;

[0014] Along the conveying direction of the corrugated paper, the slopes of the upper folding guide wheels and the lower folding guide wheels of the multiple folding guide wheel groups gradually increase; when the corrugated paper is turned over and folded downward, the corresponding fold of the corrugated paper is located between the small bottom surface of the upper folding guide wheel and the large bottom surface of the lower folding guide wheel, and the size of the large bottom surface of the upper folding guide wheel of the multiple folding guide wheel groups gradually increases; when the corrugated paper is turned over and folded upward, the corresponding fold of the corrugated paper is located between the large bottom surface of the upper folding guide wheel and the small bottom surface of the lower folding guide wheel, and the size of the large bottom surface of the lower folding guide wheel of the multiple folding guide wheel groups gradually increases;

[0015] The folding guide driving mechanism is used to drive the upper folding guide wheel or the lower folding guide wheel to rotate.

[0016] The working principle of the above-mentioned automatic corrugated paper folding device is:

[0017] During operation, the corrugated paper to be folded is transported by the conveying mechanism; when the corrugated paper to be folded approaches the rising guide section of the folding guide rod, under the guidance of the rising guide section gradually extending in the flipping direction, the folding surface assembly of the corrugated paper flips in the corresponding direction, causing the folding surface of the corrugated paper to gradually flip from a horizontal state to a 90° posture.

[0018] At the same time, when the corrugated paper approaches the folding guide wheel group, the corresponding fold of the corrugated paper is located between the small bottom surface of the upper folding guide wheel and the large bottom surface of the lower folding guide wheel, or the corresponding fold of the corrugated paper is located between the large bottom surface of the upper folding guide wheel and the small bottom surface of the lower folding guide wheel; wherein, since the wheel surfaces of the upper folding guide wheel and the lower folding guide wheel are truncated cone-shaped, when the front end of the folding surface of the corrugated paper will first contact the edge line of the large bottom surface of the upper folding guide wheel or the lower folding guide wheel on the other side of the flipping direction, then under the drive of the folding guide drive mechanism, the upper folding guide wheel or the lower folding guide wheel rotates to squeeze in the corresponding direction. The folding surface of the corrugated paper is turned over in the corresponding direction, so that the folding surface of the corrugated paper is simultaneously fitted with the wheel surface of the upper folding guide wheel and the lower folding guide wheel; at this time, the large bottom surface of the lower folding guide wheel or the large bottom surface of the upper folding guide wheel supports the non-folding surface of the corrugated paper; until the folding guide operation of the folding guide wheel group is completed; according to the above operation, multiple groups of folding guide operations are completed in sequence; because along the conveying direction of the corrugated paper, the slopes of the upper folding guide wheel and the lower folding guide wheel of the multiple groups of folding guide wheel groups gradually increase, thereby gradually increasing the turning angle of the folding surface of the corrugated paper. In this way, on the one hand, the folding surface of the corrugated paper can be actively turned over according to the specified route during the conveying process, so as to obtain a standard turning effect; on the other hand, the folding marks of the corrugated paper can be deepened or corrected, providing a more obvious and standard guide for the turning, eliminating the folding inequality caused by folding deviation and insufficient folding depth, which is conducive to obtaining a more neat and flat folding effect, so as to improve the folding quality.

[0019] After the above guidance, the flipping angle of the folding surface of the corrugated paper is close to 90°; then the descending guide section guides the folding surface of the corrugated paper to flip from 90° to 180° until the folding surface of the corrugated paper is folded on the adjacent non-folding surface of the corrugated paper, thereby completing the folding work of the corrugated paper.

[0020] In a preferred embodiment of the present invention, two groups of the first folding guide mechanism and the second folding guide mechanism are provided; the two groups of the first folding guide mechanism are respectively located on both sides of the conveying mechanism; the two groups of the second folding guide mechanism are respectively located on both sides of the conveying mechanism. In this way, the folding surfaces on both sides of the corrugated paper can be folded at the same time, thereby improving the folding effect.

[0021] A preferred embodiment of the present invention, wherein the folding guide drive mechanism comprises a mounting plate, a folding guide drive motor and a folding guide transmission assembly; the folding guide drive motor is fixedly arranged on the mounting plate; the folding guide transmission assembly comprises a belt and a pulley; there are multiple pulleys, one of which is connected to the output shaft of the folding guide drive motor, and some of the pulleys are respectively fixedly connected to multiple upper folding guide wheels or lower folding guide wheels; the belt is connected between the pulleys.

[0022] In a preferred embodiment of the present invention, the folding guide mechanism further comprises a third folding guide mechanism, the third folding guide mechanism comprises a plurality of rear-stage folding guide wheels arranged in the flipping direction, and the arrangement direction of the plurality of rear-stage folding guide wheels is parallel to the conveying direction of the corrugated paper;

[0023] The rear section folding guide wheel is provided with a truncated cone-shaped wheel surface, the rear section folding guide wheel is rotatably connected to the conveying frame, and the axis of the rear section folding guide wheel extends vertically; along the conveying direction of the corrugated paper, the slopes of the plurality of rear section folding guide wheels gradually decrease, and the sizes of the large bottom surfaces of the plurality of rear section folding guide wheels gradually increase. Through the above structure, in the process of the folding surface of the corrugated paper flipping from 90° to 180°, the folding surface of the corrugated paper will contact the large bottom surface of the rear section folding guide wheel in sequence; because the sizes of the large bottom surfaces of the plurality of rear section folding guide wheels gradually increase, the larger large bottom surfaces occupy a wider horizontal space, so that the folding surface of the corrugated paper can be pressed down to a lower posture, thereby gradually causing the folding surface of the corrugated paper to fold downward, thereby assisting in completing the folding work.

[0024] Furthermore, the third folding guide mechanism is provided with two groups, and the two groups of the third folding guide mechanism are respectively located on both sides of the conveying mechanism.

[0025] A preferred embodiment of the present invention, wherein the conveying mechanism includes a conveying frame, a conveying belt and a conveying drive mechanism; the conveying belt is arranged on the conveying frame, and a plurality of vacuum negative pressure holes are provided on the conveying belt; the vacuum negative pressure holes are connected to the negative pressure machine through a negative pressure pipeline.

[0026] Furthermore, the conveying mechanism also includes a positioning and pressing integrated mechanism, which is provided with a plurality of groups and each group includes a positioning and pressing integrated component and an adaptive pressing installation component;

[0027] The positioning and clamping integrated assembly includes two positioning and clamping integrated rollers and a connecting shaft fixedly connected between the two positioning and clamping integrated rollers; the outer side surfaces of the two positioning and clamping integrated rollers are provided with a limiting portion with a larger diameter, and the space between the limiting portions of the two positioning and clamping integrated rollers is used to position the conveyor belt; the connecting shaft is connected to the adaptive clamping installation assembly. Through the above structure, when the conveyor belt is transported to the corrugated paper, the two positioning and clamping integrated rollers are pressed on the non-folding surface of the corrugated paper through their respective limiting portions, which is conducive to ensuring that the corrugated paper is more stably adsorbed on the conveyor belt; when the conveyor belt is unloaded, the conveyor belt is positioned through the limiting portions of the two positioning and clamping integrated rollers, so that the conveyor belt can be kept at a specified position for conveying work.

[0028] Furthermore, the adaptive clamping mounting assembly includes a swing arm, a clamping spring and a fixed mounting block; one end of the swing arm is rotatably connected to the conveying frame, and the other end of the swing arm is rotatably connected to the connecting shaft; the fixed mounting block is fixedly connected to the conveying frame; the two ends of the clamping spring are respectively pressed against the swing arm and the fixed mounting block.

[0029] Furthermore, the adaptive clamping installation assembly also includes an adjustment structure, which includes an adjustment bolt and an adjustment nut. The adjustment bolt passes through the fixed installation block through a threaded connection structure, and the adjustment nut is connected to the adjustment bolt; the two ends of the clamping spring are respectively pressed against the swing arm and the adjustment nut. Through the above structure, the clamping force of the clamping spring can be adjusted.

[0030] A method for automatically folding corrugated paper comprises the following steps:

[0031] The corrugated paper to be folded is conveyed by a conveying mechanism;

[0032] When the corrugated paper to be folded approaches the ascending guide section of the folding guide rod, the folding surface assembly of the corrugated paper is turned in the corresponding direction by the guidance of the ascending guide section which gradually extends in the turning direction, so that the folding surface of the corrugated paper is gradually turned from a horizontal state to a 90° posture;

[0033] When the corrugated paper approaches the folding guide wheel group, the front end of the folded surface of the corrugated paper will first contact the edge line of the large bottom surface of the upper folding guide wheel or the lower folding guide wheel on the other side of the flipping direction, and then, under the drive of the folding guide driving mechanism, the upper folding guide wheel or the lower folding guide wheel rotates to squeeze the folded surface of the corrugated paper in the corresponding direction, causing the folded surface of the corrugated paper to flip in the corresponding direction, until the folded surface of the corrugated paper is simultaneously in contact with the wheel surfaces of the upper folding guide wheel and the lower folding guide wheel; at this time, the large bottom surface of the lower folding guide wheel or the large bottom surface of the upper folding guide wheel supports the non-folded surface of the corrugated paper; until the folding guide operation of the folding guide wheel group is completed;

[0034] According to the above operations, multiple groups of folding guide operations are completed in sequence; along the conveying direction of the corrugated paper, the slopes of the upper folding guide wheels and the lower folding guide wheels of the multiple groups of folding guide wheel groups gradually increase, and the turning angle of the folding surface of the corrugated paper is gradually increased;

[0035] After the above-mentioned guidance, the descending guide section guides the paper again until the folded surface of the corrugated paper is folded onto the adjacent non-folded surface of the corrugated paper, thereby completing the folding work of the corrugated paper.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] 1. The present invention provides multiple groups of truncated cone-shaped upper folding guide wheels and lower folding guide wheels, and the slopes of the upper folding guide wheels and lower folding guide wheels of the multiple groups of folding guide wheel groups gradually increase. On the one hand, the folding surface of the corrugated paper can be actively turned over according to a specified route during the conveying process, so as to obtain a standard turning effect; on the other hand, the folding marks of the corrugated paper can be deepened or corrected, providing more obvious and standard guidance for turning, eliminating the folding inequality caused by folding deviation and insufficient folding depth, which is conducive to obtaining a more neat and flat folding effect, so as to improve the folding quality.

[0038] 2. By setting a folding guide driving mechanism for driving the upper folding guide wheel or the lower folding guide wheel, the upper folding guide wheel or the lower folding guide wheel can rotate to guide the folding surface of the corrugated paper, thereby ensuring that the corrugated paper is folded according to the set route and improving the folding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the three-dimensional structure of the automatic corrugated paper folding device of the present invention.

[0040] Figure 2 It is a three-dimensional structural schematic diagram of a partial conveyor belt and a positioning and pressing integrated machine of the conveying mechanism of the present invention.

[0041] Figure 3 It is a side view of a partial conveyor belt and a positioning and pressing integrated machine of the conveying mechanism of the present invention.

[0042] Figure 4 It is a schematic diagram of the three-dimensional structure of the corrugated paper and the second folding guide mechanism of the present invention.

[0043] Figure 5 for Figure 4 Magnified view of the X in .

[0044] Figure 6 It is a side view of the corrugated paper and the second folding guide mechanism of the present invention.

[0045] Figure 7-8 It is a side view of the upper folding guide wheel and the lower folding guide wheel of the second folding guide mechanism of the present invention in two different working states.

[0046] Fig. 9 It is a three-dimensional structural schematic diagram of the conveying frame and the third folding guide mechanism of the present invention.

[0047] Figure 10-11 It is a side view of the conveying frame and the third folding guide mechanism of the present invention in two different working states, and the thick solid line in the figure represents corrugated paper. DETAILED DESCRIPTION

[0048] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described below in conjunction with embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0049] See also Figure 1-2 The automatic corrugated paper folding device of this embodiment includes a conveying mechanism and a folding guide mechanism; wherein the conveying mechanism includes a conveying frame 1, a conveying belt 2 and a conveying drive mechanism; the conveying belt 2 is arranged on the conveying frame 1, and a plurality of vacuum negative pressure holes are arranged on the conveying belt 2; the vacuum negative pressure holes are connected to the negative pressure machine through a negative pressure pipeline. Specifically, the specific structures of the conveying belt 2 and the conveying drive mechanism can refer to the prior art.

[0050] See also Figure 2-3 The conveying mechanism also includes a positioning and pressing integrated mechanism, which is provided with multiple groups and each includes a positioning and pressing integrated assembly and an adaptive pressing installation assembly; the positioning and pressing integrated assembly includes two positioning and pressing integrated rollers 3 and a connecting shaft 4 fixedly connected between the two positioning and pressing integrated rollers 3; the outer sides of the two positioning and pressing integrated rollers 3 are provided with a limiting portion 3-1 with a larger diameter, and the space between the limiting portions 3-1 of the two positioning and pressing integrated rollers 3 is used to position the conveyor belt 2; the connecting shaft 4 is connected to the adaptive pressing installation assembly. Through the above structure, when the conveyor belt 2 is conveyed to the corrugated paper, the two positioning and pressing integrated rollers 3 are pressed on the non-folding surface of the corrugated paper through their respective limiting portions 3-1, which is conducive to ensuring that the corrugated paper is more stably adsorbed on the conveyor belt 2; when the conveyor belt 2 is unloaded, the conveyor belt 2 is positioned by the limiting portions 3-1 of the two positioning and pressing integrated rollers 3, so that the conveyor belt 2 can be kept at a specified position for conveying.

[0051] See also Figure 2-3 The adaptive clamping installation assembly includes a swing arm 5, a clamping spring 6 and a fixed installation block 7; one end of the swing arm 5 is rotatably connected to the conveying frame 1, and the other end of the swing arm 5 is rotatably connected to the connecting shaft 4; the fixed installation block 7 is fixedly connected to the conveying frame 1; the two ends of the clamping spring 6 are respectively pressed against the swing arm 5 and the fixed installation block 7.

[0052] Furthermore, the adaptive clamping installation assembly further includes an adjustment structure, which includes an adjustment bolt 8 and an adjustment nut 9. The adjustment bolt 8 passes through the fixed installation block 7 through a threaded connection structure, and the adjustment nut 9 is connected to the adjustment bolt 8; the two ends of the clamping spring 6 are respectively pressed against the swing arm 5 and the adjustment nut 9. Through the above structure, the clamping force of the clamping spring 6 can be adjusted.

[0053] See also Figure 1 and Figure 4-6The folding guide mechanism includes a first folding guide mechanism and a second folding guide mechanism; the first folding guide mechanism includes a folding guide rod 10; along the conveying direction of the corrugated paper, the folding guide rod 10 includes an ascending guide section for turning up the folding surface of the corrugated board and a descending guide section for pressing down the folding surface of the corrugated board; specifically, the layout of the folding guide rod 10 can refer to the prior art, and the purpose is to guide the folding surface of the corrugated board to turn over 180°.

[0054] See also Figure 1 and Figure 4-6 The second folding guide mechanism is arranged on the side of the rising guide section of the folding guide rod 10 close to the corrugated paper conveying center, and the second folding guide mechanism includes a folding guide wheel group and a folding guide driving mechanism; the folding guide wheel group is provided with multiple groups and is arranged in a straight line along the horizontal direction, and the arrangement direction of the multiple groups of folding guide wheel groups is parallel to the conveying direction of the corrugated paper; each group of folding guide wheel groups includes an upper folding guide wheel 11 and a lower folding guide wheel 12 respectively located above and below the corrugated paper, and the axes of the upper folding guide wheel 11 and the lower folding guide wheel 12 are extended horizontally; the upper folding guide wheel 11 and the lower folding guide wheel 12 are both provided with a truncated cone-shaped wheel surface; the upper folding guide wheel and the lower folding guide wheel 12 of the same group are arranged in opposite directions, and the slopes of the wheel surfaces of the upper folding guide wheel 11 and the lower folding guide wheel 12 of the same group are the same.

[0055] Furthermore, along the conveying direction of the corrugated paper, the slopes of the upper folding guide wheel 11 and the lower folding guide wheel 12 of the multiple folding guide wheel groups gradually increase; when the corrugated paper is turned over and folded downward, the corresponding fold of the corrugated paper is located between the small bottom surface of the upper folding guide wheel 11 and the large bottom surface of the lower folding guide wheel 12, and the size of the large bottom surface of the upper folding guide wheel 11 of the multiple folding guide wheel groups gradually increases; when the corrugated paper is turned over and folded upward, the corresponding fold of the corrugated paper is located between the large bottom surface of the upper folding guide wheel 11 and the small bottom surface of the lower folding guide wheel 12, and the size of the large bottom surface of the lower folding guide wheel 12 of the multiple folding guide wheel groups gradually increases. Specifically, the corrugated paper of this embodiment is turned over and folded downward.

[0056] Furthermore, the first folding guide mechanism and the second folding guide mechanism are each provided with two groups; the two groups of the first folding guide mechanism are respectively located on both sides of the conveying mechanism; the two groups of the second folding guide mechanism are respectively located on both sides of the conveying mechanism. In this way, the folding surfaces on both sides of the corrugated paper can be folded at the same time, thereby improving the folding effect.

[0057] See also Figure 1 and Figure 4-6The folding guide driving mechanism includes a mounting plate 13, a folding guide driving motor 14 and a folding guide transmission assembly; the folding guide driving motor 14 is fixedly arranged on the mounting plate 13; the folding guide transmission assembly includes a belt 15 and a pulley 16; there are multiple pulleys 16, one of which is connected to the output shaft of the folding guide driving motor 14, and some of the pulleys 16 are fixedly connected to multiple upper folding guide wheels 11 or lower folding guide wheels 12 respectively; the belt 15 is connected between the pulleys 16.

[0058] See also Figure 9-11 , the folding guide mechanism also includes a third folding guide mechanism, which includes a plurality of rear-section folding guide wheels 17 arranged in the flipping direction, and the arrangement direction of the plurality of rear-section folding guide wheels 17 is parallel to the conveying direction of the corrugated paper; the rear-section folding guide wheel 17 is provided with a truncated cone-shaped wheel surface, and the rear-section folding guide wheel 17 is rotatably connected to the conveying frame 1, and the axis of the rear-section folding guide wheel 17 extends vertically; along the conveying direction of the corrugated paper, the slopes of the plurality of rear-section folding guide wheels 17 gradually decrease, and the sizes of the large bottom surfaces of the plurality of rear-section folding guide wheels 17 gradually increase. Through the above structure, in the process of the folding surface of the corrugated paper flipping from 90° to 180°, the folding surface of the corrugated paper will contact the large bottom surface of the rear-section folding guide wheel 17 in turn; because the sizes of the large bottom surfaces of the plurality of rear-section folding guide wheels 17 gradually increase, the larger large bottom surfaces occupy a wider horizontal space, so that the folding surface of the corrugated paper can be pressed down to a lower posture, such as Figure 10-11 , thereby gradually folding the folding surface of the corrugated paper downward, assisting in completing the folding work.

[0059] Furthermore, the third folding guide mechanism is provided with two groups, and the two groups of the third folding guide mechanism are respectively located on both sides of the conveying mechanism.

[0060] See also Figure 1 and Figure 4-8 The automatic folding method of corrugated paper of this embodiment comprises the following steps:

[0061] Take the example of corrugated paper flipping and folding downwards.

[0062] The corrugated paper to be folded is conveyed by the conveying mechanism; when the corrugated paper to be folded approaches the ascending guide section of the folding guide rod 10, under the guidance of the ascending guide section that gradually extends downward, the folding surface assembly of the corrugated paper flips downward, causing the folding surface of the corrugated paper to gradually flip from a horizontal state to a 90° posture. Further, the conveying mechanism of this embodiment is divided into two groups; in actual operation, during the front conveying process, the front group of conveying mechanisms conveys the corrugated paper below; during the rear conveying process, due to the need to avoid the folding surface of the corrugated paper, the rear group of conveying mechanisms (the rear group of conveying mechanisms is not shown) conveys the corrugated paper above it. The specific layout can refer to the prior art for adaptive adjustment.

[0063] At the same time, when the corrugated paper approaches the folding guide wheel group, the corresponding fold of the corrugated paper is located between the small bottom surface of the upper folding guide wheel 11 and the large bottom surface of the lower folding guide wheel 12; wherein, since the wheel surfaces of the upper folding guide wheel 11 and the lower folding guide wheel 12 are truncated cone-shaped, when the front end of the folded surface of the corrugated paper will first contact the edge line of the large bottom surface of the upper folding guide wheel 11 located on the other side of the flipping direction, then under the drive of the folding guide drive mechanism, the upper folding guide wheel 11 rotates downward to squeeze the folded surface of the corrugated paper, thereby causing the folded surface of the corrugated paper to move The folding guide wheel 11 and the lower folding guide wheel 12 are turned over until the folding surface of the corrugated paper is simultaneously in contact with the wheel surfaces of the upper folding guide wheel 11 and the lower folding guide wheel 12; at this time, the large bottom surface of the large bottom surface of the lower folding guide wheel 12 supports the non-folding surface of the corrugated paper; until the folding guide operation of the folding guide wheel group is completed; according to the above operation, multiple groups of folding guide operations are completed in sequence; because the slopes of the upper folding guide wheel 11 and the lower folding guide wheel 12 of the multiple groups of folding guide wheel groups gradually increase along the conveying direction of the corrugated paper, the turning angle of the folding surface of the corrugated paper is gradually increased, such as Figure 7-8 In this way, on the one hand, the folded surface of the corrugated paper can be actively turned over according to the specified route during the conveying process, so as to obtain a standard turning effect; on the other hand, the creases of the corrugated paper can be deepened or corrected to provide a more obvious and standard guide for turning, eliminate the folding inequality caused by crease deviation and insufficient crease depth, which is conducive to obtaining a more neat and flat folding effect, so as to improve the folding quality.

[0064] After the above guidance, the flipping angle of the folding surface of the corrugated paper is close to 90°; then the descending guide section guides the folding surface of the corrugated paper to flip from 90° to 180° until the folding surface of the corrugated paper is folded on the adjacent non-folding surface of the corrugated paper, thereby completing the folding work of the corrugated paper.

[0065] The above is a preferred embodiment of the present invention, but the embodiment of the present invention is not limited to the above content. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. An automatic corrugated paper folding device, comprising a conveying mechanism and a folding guide mechanism; characterized in that: The folding guide mechanism comprises a first folding guide mechanism and a second folding guide mechanism; The first folding guide mechanism comprises a folding guide rod; along the conveying direction of the corrugated paper, the folding guide rod comprises an ascending guide section for turning up the folding surface of the corrugated paper and a descending guide section for pressing down the folding surface of the corrugated paper; The second folding guide mechanism is arranged on the side of the rising guide section of the folding guide rod close to the corrugated paper conveying center, and the second folding guide mechanism includes a folding guide wheel group and a folding guide driving mechanism; the folding guide wheel group is provided with multiple groups and is arranged in a straight line along the horizontal direction, and the arrangement direction of the multiple groups of folding guide wheel groups is parallel to the conveying direction of the corrugated paper; each group of folding guide wheel groups includes an upper folding guide wheel and a lower folding guide wheel respectively located above and below the corrugated paper, and the axes of the upper folding guide wheel and the lower folding guide wheel are extended horizontally; the upper folding guide wheel and the lower folding guide wheel are both provided with a truncated cone-shaped wheel surface; the upper folding guide wheel and the lower folding guide wheel of the same group are arranged in opposite directions, and the slopes of the wheel surfaces of the upper folding guide wheel and the lower folding guide wheel of the same group are the same; Along the conveying direction of the corrugated paper, the slopes of the upper folding guide wheels and the lower folding guide wheels of the multiple folding guide wheel groups gradually increase; when the corrugated paper is turned over and folded downward, the corresponding fold of the corrugated paper is located between the small bottom surface of the upper folding guide wheel and the large bottom surface of the lower folding guide wheel, and the size of the large bottom surface of the upper folding guide wheel of the multiple folding guide wheel groups gradually increases; When the corrugated paper is turned up and folded, the corresponding fold of the corrugated paper is located between the large bottom surface of the upper folding guide wheel and the small bottom surface of the lower folding guide wheel, and the size of the large bottom surface of the lower folding guide wheel of the multiple folding guide wheel groups gradually increases; The folding guide driving mechanism is used to drive the upper folding guide wheel or the lower folding guide wheel to rotate; The folding guide mechanism also includes a third folding guide mechanism, which includes a plurality of rear-stage folding guide wheels arranged in the flipping direction, and the arrangement direction of the plurality of rear-stage folding guide wheels is parallel to the conveying direction of the corrugated paper; the rear-stage folding guide wheel is provided with a truncated cone-shaped wheel surface, the rear-stage folding guide wheel is rotatably connected to the conveying frame, and the axis of the rear-stage folding guide wheel extends vertically; along the conveying direction of the corrugated paper, the slopes of the plurality of rear-stage folding guide wheels gradually decrease, and the size of the large bottom surface of the plurality of rear-stage folding guide wheels gradually increases; The conveying mechanism comprises a conveying frame, a conveying belt and a conveying driving mechanism; the conveying belt is arranged on the conveying frame, and a plurality of vacuum negative pressure holes are arranged on the conveying belt; the vacuum negative pressure holes are connected with the negative pressure machine through a negative pressure pipeline.

2. The automatic corrugated paper folding device according to claim 1, characterized in that: The first folding guide mechanism and the second folding guide mechanism are each provided with two groups; the two groups of the first folding guide mechanism are respectively located on both sides of the conveying mechanism; the two groups of the second folding guide mechanism are respectively located on both sides of the conveying mechanism.

3. The automatic corrugated paper folding device according to claim 1, characterized in that: The folding guide drive mechanism includes a mounting plate, a folding guide drive motor and a folding guide transmission assembly; the folding guide drive motor is fixedly arranged on the mounting plate; the folding guide transmission assembly includes a belt and a pulley; there are multiple pulleys, one of which is connected to the output shaft of the folding guide drive motor, and some of the pulleys are fixedly connected to multiple upper folding guide wheels or lower folding guide wheels respectively; the belt is connected between the pulleys.

4. The automatic corrugated paper folding device according to claim 1, characterized in that: The third folding guide mechanism is provided with two groups, and the two groups of the third folding guide mechanism are respectively located on both sides of the conveying mechanism.

5. The automatic corrugated paper folding device according to claim 1, characterized in that: The conveying mechanism also includes a positioning and pressing integrated mechanism, which is provided with a plurality of groups and each group includes a positioning and pressing integrated component and an adaptive pressing installation component; The integrated positioning and clamping assembly includes two integrated positioning and clamping rollers and a connecting shaft fixedly connected between the two integrated positioning and clamping rollers; the outer sides of the two integrated positioning and clamping rollers are provided with a limiting portion with a larger diameter, and the space between the limiting portions of the two integrated positioning and clamping rollers is used to position the conveyor belt; the connecting shaft is connected to the adaptive clamping mounting assembly.

6. The automatic corrugated paper folding device according to claim 5, characterized in that: The adaptive clamping installation assembly includes a swing arm, a clamping spring and a fixed installation block; one end of the swing arm is rotatably connected to the conveying frame, and the other end of the swing arm is rotatably connected to the connecting shaft; the fixed installation block is fixedly connected to the conveying frame; the two ends of the clamping spring are respectively pressed against the swing arm and the fixed installation block.

7. The automatic corrugated paper folding device according to claim 6, characterized in that: The adaptive clamping installation assembly also includes an adjustment structure, which includes an adjustment bolt and an adjustment nut. The adjustment bolt passes through the fixed installation block through a threaded connection structure, and the adjustment nut is connected to the adjustment bolt; the two ends of the clamping spring are respectively pressed against the swing arm and the adjustment nut.

8. A method for automatically folding corrugated paper applied to the automatic corrugated paper folding device according to any one of claims 1 to 7, characterized in that: The following steps are involved: The corrugated paper to be folded is conveyed by a conveying mechanism; When the corrugated paper to be folded approaches the ascending guide section of the folding guide rod, the folding surface assembly of the corrugated paper is turned in the corresponding direction by the guidance of the ascending guide section which gradually extends in the turning direction, so that the folding surface of the corrugated paper is gradually turned from a horizontal state to a 90° posture; When the corrugated paper approaches the folding guide wheel group, the front end of the folded surface of the corrugated paper will first contact the edge line of the large bottom surface of the upper folding guide wheel or the lower folding guide wheel on the other side of the flipping direction, and then, under the drive of the folding guide drive mechanism, the upper folding guide wheel or the lower folding guide wheel rotates to squeeze the folded surface of the corrugated paper in the corresponding direction, causing the folded surface of the corrugated paper to flip in the corresponding direction until the folded surface of the corrugated paper is simultaneously in contact with the wheel surfaces of the upper folding guide wheel and the lower folding guide wheel; at this time, the large bottom surface of the lower folding guide wheel or the large bottom surface of the upper folding guide wheel supports the non-folded surface of the corrugated paper; until the folding and guiding operation of the folding guide wheel group is completed; According to the above operations, multiple groups of folding guide operations are completed in sequence; along the conveying direction of the corrugated paper, the slopes of the upper folding guide wheels and the lower folding guide wheels of the multiple groups of folding guide wheel groups gradually increase, and the turning angle of the folding surface of the corrugated paper is gradually increased; After the above-mentioned guidance, the descending guide section guides the paper again until the folded surface of the corrugated paper is folded onto the adjacent non-folded surface of the corrugated paper, thereby completing the folding work of the corrugated paper.

Images