Automatic cover gluing machine

Abstract

The utility model discloses an automatic cover gluing machine which comprises a sheet separating and transferring mechanism, a gluing mechanism, a cover stacking mechanism, a paper pressing wheel mechanism and a double-sheet detection sensor used in cooperation with the paper pressing wheel mechanism. By arranging the separating and transferring mechanism, when covers need to be separated and transferred, the separating and transferring mechanism is located behind a cover stacking area, a paper separator is ventilated at the moment, the edge of the cover located at the highest position is blown up, meanwhile, a paper pressing pedal presses the cover below the paper pressing pedal, and therefore the two covers are separated; the separation success rate of the two sheet materials is improved, and the reliability is good. By arranging the gluing mechanism, the gluing mechanism comprises the paper feeding overturning shaft, the paper feeding overturning block and the paper feeding overturning shaft control air cylinder, under the cooperation of the structures, covers enter the gluing procedure in order, the situation that multiple covers are located at the gluing position is prevented, and the cover gluing efficiency is improved; the utility model can be suitable for products with various sizes and shapes.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic machinery manufacturing, and particularly relates to an automatic cover gluing machine. Background Art

[0002] As the name implies, a packaging box is a box used to package products. It can be classified by materials such as paper boxes, or by product names such as delicate gift boxes, etc. There are many production devices for packaging boxes, and the case maker is one of them.

[0003] The current sheet separation and gluing mechanism of the case maker has defects: the overall structure of the mechanism is relatively complex, resulting in too high height of the whole machine equipment, large limitations in application scope, relatively complex operation process and low production efficiency.

[0004] In summary, it has become a technical problem that needs to be urgently solved by those skilled in the art. Summary of the Utility Model

[0005] In order to overcome the above defects, the purpose of the utility model is to provide an automatic cover gluing machine, which solves the problems of relatively complex overall structure in the prior art, can adapt to products of various sizes and shapes, improves the material separation efficiency, improves the cover coating efficiency, shortens the operation time, and improves the production efficiency.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is:

[0007] An automatic cover gluing machine includes a sheet separation and transfer mechanism, a gluing mechanism, a cover stacking mechanism, a paper pressing wheel mechanism and a double-sheet detection sensor used in cooperation with the paper pressing wheel mechanism;

[0008] The sheet separation and transfer mechanism includes a linear guide rail, a slider cooperating with the linear guide rail, and the linear guide rail is installed on a cross beam; the sheet separation and transfer mechanism further includes a main body moving frame, and the main body moving frame is connected with the slider through a sliding mounting plate; the sheet separation and transfer mechanism further includes an upper air cylinder and a lower air cylinder, one end of the upper air cylinder is provided with a connecting plate, the lower air cylinder is arranged on the connecting plate, and one end of the lower air cylinder is provided with a suction cup mounting structure; the sheet separation and transfer mechanism further includes a paper blowing mounting shaft, a blowing mounting plate and a paper separator, the blowing mounting plate and the paper separator are arranged on the paper blowing mounting shaft, the paper separator is connected with a fan through a pipeline, and the paper separator is provided with a plurality of air outlet holes;

[0009] The sheet separation and transfer mechanism further includes a paper pressing pedal, a pedal mounting body, a flipping link, a first pedal connecting shaft, a second pedal connecting shaft, a pedal swinging connection block, a first link flipping shaft, a pedal flipping shaft, a pedal swinging cylinder, a pedal sensor, and a second link flipping shaft; the paper pressing pedal is connected to the pedal mounting body through the pedal flipping shaft, the other end of the pedal mounting body is connected to the pedal swinging connection block through the first link flipping shaft, the pedal swinging connection block is connected to the main body moving frame through the first pedal connecting shaft, the flipping link is connected to the pedal mounting body through the second link flipping shaft, the other end of the flipping link is connected to the main body moving frame through the second pedal connecting shaft, one end of the pedal swinging cylinder is connected to the flipping link to control the upward lifting and downward pressing flips of the pedal mounting body and the paper pressing pedal, and the pedal sensor is connected to the pedal mounting body and is used to detect the position of the material and trigger the action of the paper pressing pedal.

[0010] The paper pressing wheel mechanism includes a paper pressing wheel fixing plate, a guide post mounting block, a paper pressing wheel guide post, a paper pressing wheel cylinder, a paper pressing wheel mounting plate, a paper pressing wheel, and a paper feeding guide plate; the paper pressing wheel fixing plate is arranged on the mechanism main body, the guide post mounting block and the paper pressing wheel fixing plate are connected to the sheet separation and transfer mechanism, one end of the paper pressing wheel guide post is connected to the guide post mounting block, and the other end is connected to the paper pressing wheel mounting plate, the paper pressing wheel is arranged on the paper pressing wheel mounting plate, the paper feeding guide plate is arranged on the side of the paper pressing wheel mounting plate, and the paper pressing wheel cylinder is connected to drive the paper pressing wheel mechanism and is used to control the upward or downward movement of the paper pressing wheel.

[0011] The gluing mechanism includes a bridge paper feeding groove drum, a large gluing drum, a small gluing drum, a drum servo motor, and a drum reducer; the drum servo motor is connected to the drum reducer, one end of the large gluing drum is connected to the drum reducer, the other end of the large gluing drum is connected to the driving wheel of the gear set, the bridge paper feeding groove drum is connected to the first driven wheel of the gear set, and the small gluing drum is connected to the second driven wheel of the gear set.

[0012] The gluing mechanism further includes a paper feeding flipping shaft, a paper feeding flipping block, and a paper feeding flipping shaft control cylinder; the paper feeding flipping block is connected to the paper feeding flipping shaft, there is a flipping arm connected between the paper feeding flipping shaft control cylinder and the paper feeding flipping shaft, and the flipping arm drives the paper feeding flipping shaft to control the flipping of the paper feeding flipping block.

[0013] The gluing mechanism further includes a paper feeding gap flipping shaft, a flap, and a paper feeding gap flipping shaft control cylinder; the flap is connected to the paper feeding gap flipping shaft, there is a flap lever arm connected between the paper feeding gap flipping shaft control cylinder and the paper feeding gap flipping shaft, and the flap lever arm drives the paper feeding gap flipping shaft to control the flipping of the flap.

[0014] The gluing mechanism further includes a flap cylinder adjustment component and a flap limit rotating arm. The flap limit rotating arm and the flap lever rotating arm are connected to the paper feeding gap rotating shaft together. The flap cylinder adjustment component includes a flap screw support plate and a flap adjustment screw. The flap adjustment screw cooperates with the flap screw support plate. One end of the flap adjustment screw is connected to a handwheel, and the other end cooperates with the flap limit rotating arm. Thus, the function of adjusting the spacing is achieved.

[0015] The cover stacking mechanism includes a lifting platform, lifting linear guide rails, lifting sliders and lifting guide columns used in conjunction with the lifting linear guide rails. Two groups of lifting guide columns are provided with guide paper strips, and the lifting sliders are arranged on both side plates of the lifting platform.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. The present utility model is provided with a sheet separation and transfer mechanism. When the cover needs to be separated and transferred, the sheet separation and transfer mechanism is located behind the cover stacking area. At this time, the paper separator is ventilated, and the edge of the cover at the highest position is blown up. At the same time, the paper pressing pedal presses down on the underlying cover, so that the two covers can be separated. Through the setting of the sheet separation and transfer mechanism, the success rate of separating the two sheet materials is improved, and the reliability is better.

[0018] 2. The present utility model is also provided with a paper pressing wheel mechanism and a double-sheet detection sensor. Through the above cooperation, it is possible to prevent two covers from entering the gluing process simultaneously, reducing the occurrence of equipment shutdown, glue blockage, waste cleaning and other conditions, and improving the operation efficiency.

[0019] 3. The present utility model is also provided with a gluing mechanism. The gluing mechanism includes a paper feeding rotating shaft, a paper feeding turning block, and a paper feeding rotating shaft control cylinder. Through the cooperation of the above structures, the covers enter the gluing process in an orderly manner, preventing multiple covers from being in the gluing position and improving the gluing efficiency of the covers; the gluing mechanism also includes a paper feeding gap rotating shaft, a flap, and a paper feeding gap rotating shaft control cylinder. Through the cooperation of the above structures, the glue is evenly coated on the surface of the cover, improving the coating efficiency of the cover; the gluing mechanism also includes a flap cylinder adjustment component and a flap limit rotating arm. Through the cooperation of the above structures, the position of the glue feeding gap can be manually adjusted. So as to achieve uniform coating for products from thin to thick, from standard type to special shape, and the coating thickness can be controlled.

[0020] 4. The present utility model simplifies the electrical control and pneumatic control box structures of the gluing mechanism. Compared with the traditional ones, the complexity of the structure of this component is reduced, and the operation efficiency is improved.

[0021] To more clearly elaborate on the structural features and functions of the present utility model, the following will be a detailed description of it in combination with the attached drawings and specific embodiments. Description of the Drawings

[0022] Figure 1The figure shows a three-dimensional structural schematic diagram of the cover gluing device of the present utility model;

[0023] Figure 2 The figure shows a three-dimensional structural schematic diagram of the sheet separation and transfer mechanism of the present utility model;

[0024] Figure 3 The figure shows a three-dimensional structural schematic diagram of the sheet separation and transfer mechanism of the present utility model;

[0025] Figure 4 The figure shows a three-dimensional structural schematic diagram of the sheet separation and transfer mechanism of the present utility model;

[0026] Figure 5 The figure shows a three-dimensional structural schematic diagram of the sheet separation and transfer mechanism of the present utility model;

[0027] Figure 6 The figure shows a three-dimensional structural schematic diagram of the paper pressing wheel mechanism of the present utility model;

[0028] Figure 7 is Figure 1 a partial enlarged view in

[0029] Figure 8 The figure shows a three-dimensional structural schematic diagram of the gluing mechanism of the present utility model;

[0030] Figure 9 The figure shows a three-dimensional structural schematic diagram of the gluing mechanism of the present utility model; Specific embodiments

[0031] Next, with reference to the accompanying drawings in the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0032] Refer to the attached Figure 1-9 , this embodiment provides an automatic cover gluing machine, including a sheet separation and transfer mechanism 11, a gluing mechanism 12, a cover stacking mechanism 13, a paper pressing wheel mechanism 14, and a double-sheet detection sensor 15 used in conjunction with the paper pressing wheel mechanism 14;

[0033] The cover gluing device 1 includes a sheet separation and transfer mechanism 11, a gluing mechanism 12, and a cover stacking mechanism 13;

[0034] The sheet separating and transferring mechanism 11 includes a linear guide rail 1111, a slider 1112 used in cooperation with the linear guide rail 1111, and the linear guide rail 1111 is installed on the cross beam; the sheet separating and transferring mechanism 11 further includes a main body moving frame 1113, and the main body moving frame 1113 is connected to the slider 1112 through a sliding mounting plate 1114; the sheet separating and transferring mechanism 11 further includes an upper air cylinder 1115 and a lower air cylinder 1116, one end of the upper air cylinder 1115 is provided with a connecting plate 1117, the lower air cylinder 1116 is arranged on the connecting plate 1117, and one end of the lower air cylinder 1116 is provided with a suction cup mounting structure 1118; the sheet separating and transferring mechanism 11 further includes a paper blowing mounting shaft 1119, a blowing mounting plate 1120, and a paper separator 1121. The blowing mounting plate 1120 and the paper separator 1121 are arranged on the paper blowing mounting shaft 1119. The paper separator 1121 is connected to a blower through a pipeline, and the paper separator 1121 is provided with a plurality of air outlet holes;

[0035] The sheet separating and transferring mechanism 11 includes a paper pressing pedal 1122, a pedal mounting body 1123, a turning link 1124, a pedal connecting shaft one 1125, a pedal connecting shaft two 1126, a pedal swing connecting block 1127, a link turning shaft one 1128, a pedal turning shaft 1129, a pedal swing air cylinder 1130, a pedal sensor 1131, and a link turning shaft two 1132; the paper pressing pedal 1122 is connected to the pedal mounting body 1123 through the pedal turning shaft 1129, the other end of the pedal mounting body 1123 is connected to the pedal swing connecting block 1127 through the link turning shaft one 1128, the pedal swing connecting block 1127 is connected to the main body moving frame 1113 through the pedal connecting shaft one 1125, the turning link 1124 is connected to the pedal mounting body 1123 through the link turning shaft two 1132, and the other end of the turning link 1124 is connected to the main body moving frame 1113 through the pedal connecting shaft two 1126. One end of the pedal swing air cylinder 1130 is connected to the turning link 1124 to control the upward lifting and downward pressing flips of the pedal mounting body 1123 and the paper pressing pedal 1122. The pedal sensor 1131 is connected to the pedal mounting body 1123, and it is used to detect the position of the material and trigger the action of the paper pressing pedal 1122. To control the rising and stopping of the paper lifting table, so that the product on the paper lifting table always remains in the working position.

[0036] When sheet separating and transferring of the cover is to be performed, the sheet separating and transferring mechanism 11 is located behind the cover stacking area. At this time, the paper separator 1121 is ventilated to blow up the edge of the cover at the highest position. At the same time, the paper pressing pedal 1122 presses down on the underlying cover, so that the two covers are separated. The suction cup on the sheet separating and transferring mechanism 11 sucks the separated cover and conveys it in the direction of the gluing mechanism 12.

[0037] The paper pressing wheel mechanism 14 includes a paper pressing wheel fixing plate 1410, a guide post mounting block 1411, a paper pressing wheel guide post 1412, a paper pressing wheel cylinder 1413, a paper pressing wheel mounting plate 1414, a paper pressing wheel 1415, and a paper feeding guide plate 1416. The paper pressing wheel fixing plate 1410 is arranged on the mechanism main body. The guide post mounting block 1411 and the paper pressing wheel fixing plate 1410 are connected to the sheet separating and transferring mechanism. One end of the paper pressing wheel guide post 1412 is connected to the guide post mounting block 1411, and the other end is connected to the paper pressing wheel mounting plate 1414. The paper pressing wheel 1415 is arranged on the paper pressing wheel mounting plate 1414. The paper feeding guide plate 1416 is arranged on the side of the paper pressing wheel mounting plate 1414. The paper pressing wheel cylinder 1413 is connected to drive the paper pressing wheel mechanism 14, and it is used to control the paper pressing wheel 1415 to perform upward or downward pressing actions.

[0038] The double - sheet detection sensor 15 is installed in a opposed - type manner on the equipment frame. When the double - sheet detection sensor 15 detects that two covers are simultaneously conveyed to the gluing process, the double - sheet detection sensor 15 triggers the start of the paper pressing wheel mechanism 14, and the paper pressing wheel 1415 does not allow the current cover to pass through and enter the gluing process.

[0039] The gluing mechanism 12 includes a bridge paper - feeding groove drum 1210, a large glue - applying drum 1211, a small glue - applying drum 1212, a drum servo motor 1213, and a drum reducer 1214. The drum servo motor 1213 is connected to the drum reducer 1214. One end of the large glue - applying drum 1211 is connected to the drum reducer 1214, and the other end of the large glue - applying drum 1211 is connected to the driving gear of the gear set 1215. The bridge paper - feeding groove drum 1210 is connected to the first driven gear of the gear set 1216, and the small glue - applying drum 1212 is connected to the second driven gear of the gear set 1217.

[0040] The gluing mechanism 12 further includes a paper - feeding turning shaft 1218, a paper - feeding turning block 1219, and a paper - feeding turning shaft control cylinder 1220. The paper - feeding turning block 1219 is connected to the paper - feeding turning shaft 1218. There is a turning arm 1221 connected between the paper - feeding turning shaft control cylinder 1220 and the paper - feeding turning shaft 1218, and the turning arm 1221 drives the paper - feeding turning shaft 1218 to control the turning of the paper - feeding turning block 1219.

[0041] The gluing mechanism 12 further includes a paper - feeding gap turning shaft 1222, a convex flap 1223, and a paper - feeding gap turning shaft control cylinder 1224. The convex flap 1223 is connected to the paper - feeding gap turning shaft 1222. There is a flap lever turning arm 1225 connected between the paper - feeding gap turning shaft control cylinder 1224 and the paper - feeding gap turning shaft 1222, and the flap lever turning arm 1225 drives the paper - feeding gap turning shaft 1222 to control the turning of the convex flap 1223.

[0042] The paper feed gap turning shaft 1222 and the convex flap 1223 are in a male-female clearance fit, which enlarges and reduces the gap during paper feeding (to prevent product jamming), avoiding paper feeding blockage and inefficiency caused by product softening or deformation during paper feeding. It is a special mechanism designed to improve efficiency and reduce waste.

[0043] When the product is being fed into the paper pressing wheel 1415, when the product reaches the handover and engagement point, it has successfully passed the slope of the paper retaining wall of the paper lifting table through the sheet separation and transfer mechanism, from low to the paper feeding groove drum 1210 of the overpass. When the sheet separation and transfer mechanism works and feeds the material, the paper feed turning block 1219 opens, and the product is fed under the paper pressing wheel 1415 of the paper pressing wheel mechanism through the sheet separation and transfer mechanism. At this time, the paper pressing wheel cylinder 1413 works, and the paper pressing wheel 1415 presses down. At the same time, with the cooperation of the sheet separation and transfer mechanism, the product successfully passes through the paper feed turning block 1219, and the product is matched with the paper feeding groove drum 1210 and the convex flap 1223 to form a gapless concave-convex fit. The purpose is that when the product reaches Figure 2 under the paper pressing wheel 1415, the product has passed through the paper retaining wall 1319 and the paper feed turning block 1219, and then through the downward pressure of the paper pressing wheel 1415 and the convex flap 1223 matched with the paper feeding groove drum 1210, and enters the next link.

[0044] The gluing mechanism 12 also includes a flap cylinder adjustment component and a flap limit turning arm 1227. The flap limit turning arm 1227 and the flap lever turning arm 1225 are connected to the paper feed gap turning shaft 1222 together. The flap cylinder adjustment component includes a flap screw support plate 1228 and a flap adjustment screw 1226. The flap adjustment screw 1226 cooperates with the flap screw support plate 1228. One end of the flap adjustment screw 1226 is connected to a handwheel, and the other end cooperates with the flap limit turning arm 1227, thus achieving the function of adjusting the spacing.

[0045] The cover stacking mechanism 13 includes a lifting platform 1310, lifting linear guide rails 1311, lifting sliders 1312 and lifting guide columns 1313 used in conjunction with the lifting linear guide rails 1311. Two groups of lifting guide columns 1313 are provided with guide strips 1314, and the lifting sliders 1312 are arranged on both side plates of the lifting platform 1310.

[0046] The above is only a preferred embodiment of the present invention, and does not impose any form of limitation on the present invention. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes, without departing from the scope of the technical solution of the present invention. Therefore, all equivalent changes made according to the shape, structure and principle of the present invention without departing from the content of the technical solution of the present invention shall be covered by the protection scope of the present invention.

Claims

1. An automatic cover gluing machine, characterized in that, It includes a sheet separation and transfer mechanism (11), a gluing mechanism (12), a cover stacking mechanism (13), a paper pressing wheel mechanism (14), and a double sheet detection sensor (15) used in conjunction with the paper pressing wheel mechanism (14); among them, The sheet separation and transfer mechanism (11) includes a linear guide rail (1111), a slider (1112) cooperating with the linear guide rail (1111), and the linear guide rail (1111) is installed on a cross beam; the sheet separation and transfer mechanism (11) further includes a main body moving frame (1113), and the main body moving frame (1113) is connected to the slider (1112) through a sliding mounting plate (1114); the sheet separation and transfer mechanism (11) further includes an upper air cylinder (1115) and a lower air cylinder (1116), one end of the upper air cylinder (1115) is provided with a connecting plate (1117), the lower air cylinder (1116) is arranged on the connecting plate (1117), and one end of the lower air cylinder (1116) is provided with a suction cup mounting structure (1118); the sheet separation and transfer mechanism (11) further includes a paper blowing mounting shaft (1119), a blowing mounting plate (1120), and a paper separator (1121), the blowing mounting plate (1120) and the paper separator (1121) are arranged on the paper blowing mounting shaft (1119), the paper separator (1121) is connected to a blower through a pipeline, and the paper separator (1121) is provided with a plurality of air outlet holes; the sheet separation and transfer mechanism (11) further includes a paper pressing pedal (1122), a pedal mounting body (1123), a flipping connecting rod (1124), a pedal connecting shaft one (1125), a pedal connecting shaft two (1126), a pedal swinging connecting block (1127), a connecting rod flipping shaft one (1128), a pedal flipping shaft (1129), a pedal swinging air cylinder (1130), a pedal sensor (1131), and a connecting rod flipping shaft two (1132); the paper pressing pedal (1122) is connected to the pedal mounting body (1123) through the pedal flipping shaft (1129), the other end of the pedal mounting body (1123) is connected to the pedal swinging connecting block (1127) through the connecting rod flipping shaft one (1128), the pedal swinging connecting block (1127) is connected to the main body moving frame (1113) through the pedal connecting shaft one (1125), the flipping connecting rod (1124) is connected to the pedal mounting body (1123) through the connecting rod flipping shaft two (1132), the other end of the flipping connecting rod (1124) is connected to the main body moving frame (1113) through the pedal connecting shaft two (1126), one end of the pedal swinging air cylinder (1130) is connected to the flipping connecting rod (1124) to control the pedal mounting body (1123) and the paper pressing pedal (1122) to perform upward lifting and flipping and downward pressing and flipping, and the pedal sensor (1131) is connected to the pedal mounting body (1123), which is used to detect the position of the material and trigger the action of the paper pressing pedal (1122) and control the rising of the lifting platform (1310).

2. The automatic cover gluing machine according to claim 1, characterized in that, The paper pressing wheel mechanism (14) includes a paper pressing wheel fixing plate (1410), a guide post mounting block (1411), a paper pressing wheel guide post (1412), a paper pressing wheel cylinder (1413), a paper pressing wheel mounting plate (1414), a paper pressing wheel (1415), and a paper feeding guide plate (1416); the paper pressing wheel fixing plate (1410) is arranged on the mechanism main body, the guide post mounting block (1411) and the paper pressing wheel fixing plate (1410) are connected to the sheet separating and transferring mechanism, one end of the paper pressing wheel guide post (1412) is connected to the guide post mounting block (1411), and the other end is connected to the paper pressing wheel mounting plate (1414), the paper pressing wheel (1415) is arranged on the paper pressing wheel mounting plate (1414), the paper feeding guide plate (1416) is connected to the paper pressing wheel mounting plate (1414), and the paper pressing wheel cylinder (1413) is connected to drive the paper pressing wheel mechanism (14), which is used to control the paper pressing wheel (1415) to perform upward or downward movements.

3. The automatic cover gluing machine according to claim 1, wherein, The gluing mechanism (12) includes a bridge paper feeding groove roller (1210), a large gluing roller (1211), a small gluing roller (1212), a roller servo motor (1213), and a roller reducer (1214). The roller servo motor (1213) is connected to the roller reducer (1214), one end of the large gluing roller (1211) is connected to the roller reducer (1214), the other end of the large gluing roller (1211) is connected to the driving wheel of the gear set (1215), the bridge paper feeding groove roller (1210) is connected to the first driven wheel of the gear set (1216), and the small gluing roller (1212) is connected to the second driven wheel of the gear set (1217).

4. The automatic cover gluing machine according to claim 3, wherein The gluing mechanism (12) further includes a paper feeding turnover shaft (1218), a paper feeding turnover block (1219), and a paper feeding turnover shaft control cylinder (1220); the paper feeding turnover block (1219) is connected to the paper feeding turnover shaft (1218), a turnover arm (1221) is connected between the paper feeding turnover shaft control cylinder (1220) and the paper feeding turnover shaft (1218), and the turnover arm (1221) drives the paper feeding turnover shaft (1218) to control the paper feeding turnover block (1219) to turn over.

5. The automatic cover gluing machine according to claim 3, characterized in that, The gluing mechanism (12) further includes a paper feeding gap turnover shaft (1222), a convex flap (1223), and a paper feeding gap turnover shaft control cylinder (1224); the convex flap (1223) is connected to the paper feeding gap turnover shaft (1222), a flap lever arm (1225) is connected between the paper feeding gap turnover shaft control cylinder (1224) and the paper feeding gap turnover shaft (1222), and the flap lever arm (1225) drives the paper feeding gap turnover shaft (1222) to control the convex flap (1223) to turn over. The bridge paper feeding groove roller (1210) and the convex flap (1223) are matched to form a concave-convex match.

6. The automatic cover gluing machine according to claim 3, wherein The sizing mechanism (12) further includes a flap cylinder adjustment assembly and a flap limit turning arm (1227). The flap limit turning arm (1227) and the flap lever turning arm (1225) are connected to the paper feeding gap turning shaft (1222) together. The flap cylinder adjustment assembly includes a flap screw support plate (1228) and a flap adjustment screw (1226). The flap adjustment screw (1226) is matched with the flap screw support plate (1228). One end of the flap adjustment screw (1226) is connected to a handwheel, and the other end is matched with the flap limit turning arm (1227).

7. The automatic cover gluing machine according to claim 1, wherein The cover stacking mechanism (13) includes a lifting platform (1310), a lifting linear guide rail (1311), a lifting slider (1312) used in conjunction with the lifting linear guide rail (1311), and lifting guide columns (1313). Guide paper strips (1314) are arranged on two groups of the lifting guide columns (1313). The lifting sliders (1312) are arranged on both side plates of the lifting platform (1310).

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