CN108790277B - An automatic gluer and folding device for corrugated cartons - Google Patents

Abstract

The invention discloses an automatic gluer and folding device for corrugated cartons, belonging to the technical field of gluers. The device of the present invention includes a crossbeam and a workbench, and the crossbeam is provided with a box gluer. The invention also discloses a method for an automatic gluer folding device for corrugated cartons. The automatic folding device of the box gluer of the present invention includes a folding machine and a box gluer, and the folding machine and the box gluer are used together. After the pressing device positions and compresses the corrugated box, the folding and gluing work is completed. The corrugated box folding process The point force in the middle is changed to plane force, the force is balanced, the corrugated box is not easy to break, the corrugated box is folded accurately, and the one-time gluing work is completed during the folding process of the corrugated box, and the coating is precisely controlled by controlling the movement process of the cylinder. The amount of glue can accurately control the position and uniformity of glue application, and improve the position accuracy and quality of glue application. The invention has simple structure, low cost and is easy to clean.

Description

An automatic gluer and folding device for corrugated cartons

technical field

The invention belongs to the technical field of gluer, and more specifically relates to an automatic gluer and folding device and method for corrugated boxes.

Background technique

Corrugated paper is a plate made of liner paper and corrugated corrugated paper formed by processing corrugated sticks. It is generally divided into two types: single corrugated board and double corrugated board. According to the size of the corrugated board, it is divided into: A, B, C , E, F five types. Type A stare blankly made of corrugated board has good buffer, A degree of elasticity, C going A while at A type A. But the stiffness and impact resistance is better than that of type A stare blankly. But the stiffness and impact resistance are better than A-type flute; B-type flute has a large arrangement density, and the corrugated board made of it has a smooth surface and high bearing pressure, which is suitable for printing; E-type flute is thin and dense, and it shows its rigidity. strength. The invention and application of corrugated paper has a history of more than 100 years. It has the advantages of low cost, light weight, easy processing, high strength, excellent printing adaptability, and convenient storage and transportation. More than 80% of corrugated paper can be recycled. Used as packaging for food or digital products, it is relatively environmentally friendly and widely used. Corrugated cartons are made of corrugated cardboard and are the most widely used paper container packaging, widely used in transportation packaging. The reason why corrugated boxes are widely used is because it has many unique advantages: good cushioning performance; Less consumption; good printing performance; recyclable and reused.

In the prior art, the folding and gluing of corrugated boxes are carried out separately. The cartons must first be folded to 90 degrees through the cardboard in a 180-degree state, and then pressed to 0 degrees. The traditional corrugated box gluer, corrugated paper The entire folding process of the box is completed in the state of continuous rolling and pinching of the belt, that is, a pair of belts are installed on the left and right sides of the box gluer, so that the corrugated cardboard is folded from 180 degrees at the beginning to 0 degrees at the completion. All are turned inward in a spiral shape under the action of the belt and pinched by the lower belt. The folding work is completed at the same time during the pinch movement. The whole process is carried out continuously and completed at one time without any pause in the middle. During this process, the corrugated cardboard is folded inward by the force of the belt, and the belt and the cardboard can only produce point or line contact at the front end of the cardboard running direction, and it is impossible to produce plane contact, so that the folded cardboard is stressed unevenly , the folding line is dislocated, forming a "fish tail"; the folding belt is mostly a flat belt, which needs to move the cardboard horizontally and turn it over to press the cardboard to fold inward. The belt has better flexibility, while the corrugated cardboard is less flexible. , the inner side of the belt, due to the internal rotation of the roll, the horizontal movement speed produces a decomposition in the inward direction, thus lagging behind the running speed of the cardboard. Uncontrollable large errors are produced, that is, scissors. Then glue and glue. At present, there are two kinds of glue supply devices for automatic box gluers, one is the self-flow glue supply device. Adjustment, the disadvantage of this method is that the size of the glue is not easy to control, the glue is large, the excess glue is easy to leak, and the accuracy of the wiring is not easy to control; the other is a circulating glue supply device, and its main structure is a glue pump ( Usually gear pump), glue inlet pipe, glue return pipe, glue box, glue wheel, glue barrel and valve. Its working principle is to pump glue from the glue barrel into the glue box through the gear pump to apply glue Glue, the excess glue in the glue box returns to the glue barrel under the pressure of the pump. Although this method overcomes the shortcomings of the self-flowing glue supply, it brings new problems: (1). The glue is applied in the same way, that is, the contact glue is used on the round rolling surface. The manufacturing cost of the glue pump is high and the precision of the wiring is not high. (2). 1. Waste a large amount of residual glue and water when cleaning the glue pump, which not only pollutes the environment, but also increases the cost. (4), the thickness of glue coating is not easy to control.

This separate method mainly has the following problems: (1) The force direction of the folded cardboard and the actual folding direction of the carton have a hysteresis deviation, which cannot be matched, resulting in an uncontrollable large error in the folding seam of the carton. (2) Using Glue is applied in the form of a roller, that is, the contact glue is used on a round roller surface. The manufacturing cost of the glue pump is high, the precision of the wiring is not high, and the cleaning is difficult. (3) The process is complicated, which increases the length of the assembly line and the carton bonding. Accuracy is difficult to grasp.

Contents of the invention

In view of the above defects or improvement needs of the prior art, an automatic gluer and folding device for corrugated cartons according to the present invention aims to use the folding machine and the gluer together, and the pressing device will position and compress the corrugated cartons Finally, the second folding board completes the first folding work, and then the gluer completes the corrugated box gluing work, and finally the first folding board completes the second folding work and completes the box gluing work. The automatic gluing and folding device of the carton changes the point force during the folding process of the carton to parallel and plane force, the force area is large, the force is balanced, and the corrugated box is not easily damaged. At the same time, the pressing device of the present invention will corrugated box Positioning and pressing, so that the folding carton moves in a predetermined direction under the action of the pressing device and the folding plate, so that the carton is accurately folded according to the folding line, avoiding the formation of "fish tail" or the dislocation of the carton. At the same time, during the folding process of the corrugated carton To complete the one-time gluing work, the amount of glue applied can be precisely controlled by controlling the movement process of the first cylinder, and the position and uniformity of glue applied can be precisely controlled through the second balance plate and the glue applying device. The position accuracy and quality of gluing are improved, and at the same time, the invention has simple structure, simple process, low cost and is convenient for cleaning.

In order to solve the problems in the above-mentioned prior art, the present invention adopts the following technical solutions.

An automatic gluer and folding device for corrugated boxes, comprising a workbench and a crossbeam arranged above the workbench, the crossbeam is a door-shaped frame structure, on which a gluer is arranged; the gluer includes A gluing device, an extruding plate, and a first cylinder located between the gluing device and the extruding plate, the gluing device and the glue supplying device are connected through a glue inlet pipe provided with a valve, and the gluing device is A cavity that can accommodate the extruded plate, a second balance plate is provided on the opposite side of the gluing device to the extruded plate, and the second balance plate is slidably connected with the gluing device, the The side of the second balance plate away from the extruded plate is provided with a glue head; the two sides of the workbench are provided with a folding machine, and the folding machine includes a folding plate, a second cylinder, a connecting rod and a rotating shaft. The connecting rod is an arc-shaped connecting rod, one end of which is connected with the second cylinder, and the other end is connected with the folding plate, and the bottom of the folding plate is connected with the workbench through the rotating shaft.

Further, a pressing device is provided at both ends of the rotating shaft, and the pressing device includes a pressing piece and a corner cylinder, and the pressing piece and the corner cylinder are fixedly connected.

Further, the extruded plate is a T-shaped structure composed of a vertical rod and a panel, the T-shaped structure is arranged in the cavity of the gluing device, and the vertical rod and the first A cylinder is connected, and the panel is fixedly connected with the vertical rod.

Further, the folding plate includes a first folding plate and a second folding plate, and the lower ends of the first folding plate and the second folding plate are connected to the rotating shaft.

Further, the second balance plate is a metal mesh structure, and the shape of the structure is the same as that of the opening structure under the cavity.

Further, a plurality of shock absorbing springs are provided on the side of the second balance plate close to the pressing plate, and the shock absorbing springs are evenly distributed on the second balance device.

Further, a first balance plate is provided on a side of the damping spring close to the pressing plate.

Further, the shape of the first balance plate is the same as that of the extrusion plate.

Further, the glue applicator is made of wear-resistant soft rubber or silica gel.

A method for automatic gluing and folding of corrugated boxes, specifically comprising the following steps:

S1, placing the corrugated box on the workbench;

S2. The corner cylinder drives the pressing sheet to rotate, and then drives the pressing sheet to move downward, so that the pressing sheet compresses and fixes the corrugated cardboard box;

S3. The second cylinder pushes the second folding plate to rotate 180° along the rotation axis, and the second folding plate presses the 04 surface of the corrugated box;

S4. The first cylinder pushes the box gluer to move downward, and glues the 05 surface of the corrugated box. After the glue coating is completed, the first cylinder drives the box gluer to return;

S5. The second air cylinder pushes the first folding plate to rotate 180° along the rotation axis, and the first folding plate bonds the 01 surface and the 05 surface of the corrugated box to be processed and presses the to-be-processed corrugated box The 01 side of the corrugated box to complete the folding and bonding of the corrugated box.

Generally speaking, compared with the prior art, the above technical solutions conceived by the present invention can achieve the following beneficial effects:

(1) A kind of automatic case-gluing and folding device for corrugated cartons of the present invention includes a folding machine and a case-gluing machine, the folding machine and the case-gluing machine are used in conjunction, and after the pressing device positions and compresses the corrugated cartons, the second The folding plate completes the first folding work, and then the gluer completes the corrugated box gluing work, and finally the first folding plate completes the second folding work and completes the box gluing work. The invention is an automatic box gluer for corrugated boxes When the folding device is folded, the point force during the folding process of the carton is changed to parallel and plane force, the force bearing area is large, the force is balanced, and the corrugated box is not easy to be damaged. At the same time, the pressing device of the present invention can position and compress the corrugated box , so that the folding carton moves in a predetermined direction under the action of the pressing device and the folding plate, so that the carton is accurately folded according to the folding line, avoiding the formation of "fishtail" or the misalignment of the carton, and at the same time, a one-time process is completed during the folding process of the corrugated carton Glue box work, by controlling the movement process of the first cylinder to precisely control the amount of glue applied, and at the same time through the second balance plate and the glue applying device to precisely control the position and uniformity of glue applying, improve the glue application Position accuracy and gluing quality, at the same time, the present invention has simple structure, simple process, low cost, and is easy to clean.

(2) A kind of automatic gluer folding device for corrugated box of the present invention, the folding machine comprises the first folding plate, the second folding plate and hold down device, after the hold down device has positioned and pressed the corrugated box, the second The folding board completes the first folding work, and then the gluer completes the corrugated box gluing work, and finally the first folding board completes the second folding work and completes the box gluing work, and the point force during the folding process of the carton changes to parallel, Plane force, large force area, balanced force, the corrugated box is not easy to damage, at the same time, the pressing device of the present invention can position and press the corrugated box, so that the folded carton can press the predetermined pressure under the action of the pressing device and the folding plate Directional movement makes cartons folded accurately and avoids defective products.

(3) A kind of automatic box-gluing and folding device for corrugated boxes of the present invention comprises a glue supply device, a gluing device and an extruding plate, the extruding plate is a T-shaped structure, and the gluing device is capable of accommodating the extruding plate The side of the gluing device opposite to the extrusion plate is provided with a second balance plate, the second balance plate is slidingly connected with the gluing device, and the side of the second balance plate away from the extrusion plate is provided with a coating Glue head, when working, the first cylinder pushes the extrusion plate to move downward, when the extrusion plate passes through the second cavity, it squeezes the glue in the second cavity downward, and the extruded glue passes through the second balance plate With the gluing device, evenly smearing on the corrugated carton, the present invention precisely controls the amount of glue applied by controlling the movement process of the first cylinder, and at the same time precisely controls the gluing through the second balance plate and the gluing device The location of the glue and the uniformity of glue application can improve the position accuracy and glue quality of glue application. At the same time, the structure of the present invention is simple, the cost is low, and it is easy to clean.

(4) An automatic gluer and folding device for corrugated boxes of the present invention, the extruded plate is a T-shaped structure, and the gluing device includes a first cavity that can accommodate the extruded plate and a first cavity that can just accommodate the extruded plate In the second cavity, the first cylinder pushes the extrusion plate to move downward. When the extrusion plate passes through the second cavity, it squeezes the glue in the second cavity downward to complete the glue coating work, which is convenient to control the first cylinder. The movement process can accurately control the amount of glue applied, so that the thickness of glue applied can be effectively controlled according to the actual situation.

(5) An automatic gluer and folding device for corrugated boxes of the present invention, the gluing part is provided with a second balance plate and the gluing device, the second balance plate is a mesh metal plate, on the one hand, it is convenient for the glue to be uniform Uniform gluing is achieved through the second balance plate, and on the other hand, the gluing device can be balanced so that the gluing device is always kept in a horizontal state and the thickness of the gluing is uniform.

(6) In the present invention, an automatic gluer and folding device for corrugated boxes, a shock-absorbing spring is provided on the side close to the extruding plate, and a first balance plate is provided on the side of the extruding plate near the shock-absorbing spring , when the first cylinder pushes the extruding plate to extrude the glue, it can slow down the vibration of the extruding plate, and further precisely control the thickness and uniformity of the glue application.

(7) An automatic gluer and folding device for corrugated cartons of the present invention, the shape of the gluing device is consistent with the shape of the required gluing parts, so as to realize one-time precise gluing.

(8) A kind of automatic box-gluing and folding device for corrugated boxes of the present invention, the second balance plate and the gluing device are detachably connected with the gluing device, which is convenient for cleaning of the gluing device, and at the same time, the second The balance board is a metal plate, and the gluing device is a durable and soft rubber head, no glue and water residue, low cost, and friendly environment.

(9) A kind of method that is used for the folding of corrugated cardboard box automatically of the present invention, the second folding board first completes a folding work, then the box gluer completes the gluing work, the first folding board completes the second folding work and Complete the gluing work of the corrugated boxes to be processed, the folding box is accurate, the position and thickness of the glue can be precisely controlled, so as to ensure the pass rate of the product. Simultaneously, the technological process of the present invention is simple and easy to operate, reducing the work intensity of manual box folding and gluing.

Description of drawings

In order to illustrate the technical solution of the present invention more clearly, the accompanying drawings that need to be used in the description of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only structural schematic diagrams of the present invention. As far as people are concerned, other drawings can also be obtained based on these drawings on the premise of not paying creative work.

Fig. 1 is a schematic structural view of an automatic gluer and folding device for corrugated boxes according to an embodiment of the present invention;

Fig. 2 is a schematic structural view of an automatic gluer and folding device for corrugated cartons in operation according to an embodiment of the present invention;

Fig. 3 is a front view of a pressing device involved in an automatic gluer and folding device for corrugated boxes according to an embodiment of the present invention;

Fig. 4 is a side view of a pressing device involved in an automatic gluer folding device for corrugated boxes according to an embodiment of the present invention;

Fig. 5 is a structural schematic diagram of a gluer related to an automatic gluer and folding device for corrugated cartons according to an embodiment of the present invention;

Fig. 6 is a schematic structural diagram of a second balance plate involved in an automatic gluer and folding device for corrugated cartons according to an embodiment of the present invention;

Fig. 7 is a schematic structural view of the corrugated carton.

In all drawings, the same reference numerals represent the same technical features, specifically:

1-beam, 2, workbench, 3-gluer, 31-glue supply device, 32-first cylinder, 33-valve, 34-glue device, 35-extrusion plate, 36-first balance plate, 37-shock absorbing spring, 38-second balance plate, 39-gluing head, 4-folding machine, 41-second cylinder, 42-connecting rod, 43-first folding plate, 44-second folding plate, 45 - rotating shaft, 46 - pressing device, pressing piece 461, angle cylinder 462.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

As shown in FIG. 1 , an embodiment of the present invention provides an automatic gluer and folding device for corrugated boxes, including a beam 1 , a workbench 2 , a gluer 3 and a folder 4 . The crossbeam 1 is a door-shaped frame structure, the box gluer 3 is arranged on the crossbeam 1 , the workbench 2 is arranged in the middle of the crossbeam 1 door-shaped frame, and the folding machine 4 is arranged on both sides of the workbench 2 .

As shown in FIG. 2 , the folding machine 4 includes a second cylinder 41 , a connecting rod 42 , a folding plate, a rotating shaft 45 and a pressing device 46 . Connecting rod 42 is arc-shaped connecting rod, and one end of connecting rod 42 is connected with second cylinder 41, and one end is connected with folding plate, and folding plate comprises first folding plate 43 and second folding plate 44, the width of first folding plate 43 Corresponding to the 01 surface of the corrugated box, the width of the second folding plate 44 corresponds to the 04 surface of the corrugated box. The bottom of the folding plate is connected with the workbench 2 through the rotating shaft 45, and the two ends of the rotating shaft are provided with a pressing device 46, and the pressing device 46 includes an L-shaped pressing piece 461 and a corner cylinder 462. When not working, the pressing piece 461 is in a relaxed state, and is L-shaped upright. When working, the corner cylinder 462 drives the pressing piece 461 to rotate, and then drives the pressing piece 461 to move downward, so that the pressing piece 461 presses and fixes the corrugated box, and the pressing piece 461 becomes an inverted L shape and presses the corrugated box to be pressed tightly. Realize the fixation and compression of the part of the corrugated box to be folded, so as to avoid the deviation of the carton during the folding process or the failure of the corrugated box to be folded according to the original folding line.

As shown in Figure 5, the folder gluer 3 includes a glue supply device 31, a first cylinder 32, a valve 33, a glue application device 34, a first cavity, a second cavity, an extrusion plate 35, a first balance plate 36, Damping spring 37, second balance plate 38, glue applicator head 39. The glue supply device 31 is a cavity that can accommodate a certain volume of glue. The side wall of the glue supply device 31 is provided with a scale value, which can supply different volumes of glue according to different needs. The top of the glue supply device 31 is also provided with an additional glue The container cover is convenient for adding glue and cleaning the glue supply device 1.

As shown in Fig. 1, Fig. 2 and Fig. 5, a glue applicator 34 is arranged under the glue supply device 31, and the glue supply device 31 and the glue applicator 34 are connected through a glue inlet pipe provided with a valve 33, when the glue supply device starts to work , open the valve 33, the glue enters the glue application device 34 through the glue inlet pipe, and when the glue supply device stops working, close the valve 33 to stop the glue supply. The valve 33 is a flow-adjustable one-way valve, and the size of the valve 33 is adjusted according to the amount of glue required by the gluing device 34 . A first air cylinder 32 is also provided between the glue applying device 34 and the glue supplying device 31 , and the first air cylinder 32 is connected to the extruding plate 35 . The extruding plate 35 is connected to a T-shaped structure and is arranged in the cavity of the gluing device 34. The lower part of the extruding plate 35 is a panel, and the upper part is rod-shaped. The rod-shaped structure is connected with the first cylinder. When working, the first The cylinder 32 pushes the rod-shaped structure to drive the panel, so as to realize the back and forth movement process of the extrusion plate 35 . The gluing device 34 includes a first cavity capable of accommodating the extruded plate 35 and a second cavity just capable of accommodating the panel of the extruded plate 35 . The first cavity communicates with the second cavity, and the cavity structure of the first cavity is larger than that of the second cavity, and the size of the second cavity is just enough to allow the panel of the extrusion plate 35 to pass through. When working, open the valve 33, the glue in the glue supply device 31 flows into the glue application device 34 through the rubber tube, the first cylinder 32 pushes the extrusion plate 35 to move downward, when the panel of the extrusion plate 35 moves from the first cavity to the second When in the second cavity, the glue in the second cavity is squeezed downward to realize glue extrusion. At the same time, the process of the first cylinder 32 can be controlled according to the amount of glue required by different corrugated boxes. Thereby controlling the progress of the panel of the extruding plate 35 in the second cavity, thereby controlling the amount of glue output and glue application.

As shown in Figure 1, Figure 2 and Figure 5, the second balance device 38 is provided below the second cavity, the second balance device 38 is a metal mesh structure, and the shape of the second balance device 38 is consistent with that of the second cavity. The shape of the lower opening of the body is the same. The second balancing device 38 is slidably connected with the second cavity, and the second balancing device 38 can be disassembled from the second cavity for easy cleaning. The second balance device 38 below is provided with glue applicator 39, and glue applicator 39 is fixedly connected with the second balance device 38 and the shape of glue applicator 39 is identical with the shape of the second balance device 38, simultaneously, glue applicator 39 follows The second balancing device 38 moves up and down along the second cavity. The second balance device 38 is a metal mesh structure. On the one hand, it can allow the glue to be evenly distributed to the glue applicator 39 through the metal mesh. Maintain a horizontal state to achieve uniform thickness of the glue, so as to achieve uniform glue application. Preferably, the glue applicator 39 is soft rubber or silicone.

In another embodiment of the present invention, the side of the second balancing device 38 that is not in contact with the glue applicator 39 is fixedly provided with a plurality of shock absorbing springs 37, and the shock absorbing springs 37 are evenly distributed on the second balancing device 38 and are connected to the first balancing device 38. Two balancing devices 38 are fixedly connected. Extrusion plate 35 first contacts damping spring 37 when extruding the glue in the second cavity, and extrudes damping spring 37 while extruding the glue in the second cavity, and damping spring 37 can guarantee extrusion on the one hand. The plate 35 squeezes the glue horizontally, on the one hand, it can slow down the vibration of the extruded plate 35, and further precisely control the thickness and uniformity of the glue application.

In another embodiment of the present invention, a first balance plate 36 is fixed above the damping spring 37, and when the extrusion plate 35 squeezes the glue in the second cavity, it first contacts the first balance plate 36, and passes Squeeze the first balance plate 36 to squeeze the shock absorbing spring 37, squeeze the shock absorbing spring 37 while squeezing the glue in the second cavity, further ensure that the squeeze plate 35 squeezes the glue horizontally, and at the same time slow down the pressure of the squeeze plate. The vibration can further precisely control the thickness and uniformity of glue application.

In another embodiment of the present invention, the folded extruded part is fixedly arranged under the panel of the extruded plate 35, and the folded extruded part is arranged along a circle of the extruded plate 35 panel, and the folded extruded part is a Z-shaped structure or A structure in which multiple Z characters are superimposed. The folded extrusion part is made of rubber material. When the panel of the extrusion plate 35 moves into the second cavity, it squeezes the folded extrusion part. At the same time, according to the amount of glue required by different corrugated boxes, the process of the cylinder can be controlled, thereby controlling the process of the panel of the extrusion plate 35 in the second cavity, thereby controlling the amount of glue output and application.

During work, the corner cylinder 462 pushes the pressing piece 461 to rotate 180° along the rotating shaft 45, and the pressing piece 461 becomes an inverted L shape and presses the corrugated box to be fixed and pressed to realize the fixing and pressing of the part of the corrugated box to be folded. Push the second folding plate to move to realize the first folding work. After the first folding work is completed, the box gluer 3 starts to work, opens the valve 33, and the glue in the glue supply device 31 flows into the glue application device 34 through the rubber hose. The cylinder 32 pushes the extrusion plate 35 to move downward. When the panel of the extrusion plate 35 moves from the first cavity to the second cavity, the glue in the second cavity is squeezed downward, thereby realizing glue extrusion. , the second balance device 38 and the glue applicator 39 apply the glue on the 05 side of the corrugated box under the action of the extrusion force to complete the glue application. The second cylinder pushes the first folding board to move, and completes the corrugated box gluing work while completing the second folding work.

In the automatic folding method of a box gluer of the present invention, the second folding plate first completes a folding work, then the box gluer finishes the gluing work, the first folding plate finishes the second folding work and completes the gluing of the corrugated box to be processed. Box work, box folding is accurate, the position and thickness of glue application can be precisely controlled, so as to ensure the qualified rate of products.

It is easy for those skilled in the art to understand that the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention, etc., All should be included within the protection scope of the present invention.

Claims (9)

1. An automatic gluer and folding device for corrugated boxes, comprising a workbench (2) and a crossbeam (1) located above the workbench (2), characterized in that the two workbenches (2) A folding machine (4) is provided on the side, and the crossbeam (1) is a door-shaped frame structure, on which a box gluer (3) is provided, and the box gluer (3) includes a glue applying device (34), an extrusion plate (35) and the first cylinder (32) located between the gluing device (34) and the extruding plate (35), the gluing device (34) and the gluing device (31) are provided with The glue inlet pipe of the valve (33) is connected, and the glue applicator (34) is a cavity that can accommodate the extruded plate (35), and the glue applicator (34) is opposite to the extruded plate (35) One side is provided with a second balance plate (38), the second balance plate (38) is slidingly connected with the gluing device (34), and the second balance plate (38) is away from the extruding plate ( One side of 35) is provided with gluing head (39), and described folding machine (4) comprises folding plate, second air cylinder (41), connecting rod (42) and rotating shaft (45), and described connecting rod (42 ) is an arc-shaped connecting rod, one end of which is connected with the second cylinder (41), and the other end is connected with the folded plate, and the bottom of the folded plate is connected with the workbench ( 2) connect. 2. A kind of automatic box-gluing and folding device for corrugated boxes according to claim 1, characterized in that, the workbench (2) is also provided with a pressing device (46), and the pressing device ( 46) Set at both ends of the rotating shaft (45), the pressing device (46) includes a pressing piece (461) and a corner cylinder (462), and the pressing piece (461) and the corner cylinder (462 ) fixed connection. 3. A kind of automatic box-gluing and folding device for corrugated boxes according to claim 2, characterized in that, the extruded plate (35) is a T-shaped structure composed of vertical rods and panels, so The T-shaped structure is arranged in the cavity of the gluing device (34), and the vertical rod is connected to the first cylinder (32), and the panel is fixedly connected to the vertical rod. 4. A kind of automatic gluer folding device for corrugated boxes according to claim 3, characterized in that, said folding plate comprises a first folding plate (43) and a second folding plate (44), said first folding plate The lower ends of a folding plate (43) and a second folding plate (44) are connected with the rotation shaft (45). 5. An automatic gluer and folding device for corrugated boxes according to claim 4, characterized in that, the second balance plate (38) is a metal mesh structure, and the structural shape is the same as that under the cavity. The opening structures have the same shape. 6. The automatic gluer and folding device for corrugated boxes according to claim 5, characterized in that, the side of the second balance board (38) close to the extrusion board (35) is provided with multiple a damping spring (37), and the damping spring (37) is evenly distributed on the second balancing device (38). 7. An automatic gluer and folding device for corrugated boxes according to claim 6, characterized in that a first Balance board (36). 8. The automatic gluer and folding device for corrugated boxes according to claim 7, characterized in that, the shape of the first balance plate (36) is the same as that of the extrusion plate (35). 9. A method for automatic gluer folding of corrugated cartons, characterized in that, the application of a kind of automatic gluer folding device for corrugated cartons as claimed in claim 8 is implemented, specifically comprising the following steps: S1, placing the corrugated box on the workbench (2); S2. The corner cylinder (462) drives the pressing piece (461) to rotate, and then drives the pressing piece (461) to move downward, so that the pressing piece (461) presses and fixes the corrugated box; S3. The second cylinder (41) pushes the second folding plate (44) to rotate 180° along the rotation axis (45), and the second folding plate (44) presses the 04 surface of the corrugated box; S4. The first cylinder (32) pushes the gluer to move downward, and applies glue to the 05 surface of the corrugated box. After the glue is applied, the first cylinder (32) drives the gluer to return; S5. The second cylinder (41) pushes the first folding plate (43) to rotate 180° along the rotation axis (45), and the first folding plate (43) connects the 01 surface of a corrugated box to be processed with the The 05 side is bonded and pressed against the 01 side of the corrugated box to be processed to complete the folding and bonding of the corrugated box.