Automatic glue painting machine for paper box

Abstract

The invention relates to a glue drawing machine, in particular to an automatic glue drawing machine for a paper box. Comprising a conveyor, a supporting frame is installed on the top of the conveyor, a guide mechanism is arranged between the supporting frame and the conveyor and used for guiding paper boxes conveyed on the conveyor, and a positioning mechanism used for positioning the conveyed paper boxes is arranged on the supporting frame. Through cooperation of the guide mechanism and the positioning mechanism, the distance can be adjusted according to paper boxes of different sizes, the production requirements of products of various specifications are met, the paper boxes can be accurately positioned at the designated position, guarantee is provided for accurate gluing, and then through the design of a sliding cylinder and a scraper, the production efficiency is improved. Glue adhering to the side face and the bottom end of the glue outlet head can be automatically removed after gluing each time, glue residues are prevented from forming clots or dripping, the cleanliness of equipment and the quality of follow-up machining are guaranteed, it is guaranteed that the appearance of each paper box is clean and tidy, and the quality of final products is improved.

Description

Technical Field

[0001] The invention relates to a glue painting machine, in particular to an automatic glue painting machine for paper boxes. Background Art

[0002] Paper boxes play an indispensable role in the modern packaging industry. Whether it is the packaging of food, medicine or electronic products, high-quality paper boxes are indispensable. In order to improve production efficiency and product quality, automated equipment such as paper box automatic glue painting machines have gradually become an important part of the production line. Such machines can accurately apply glue on paper boxes to ensure the smooth progress of subsequent folding and bonding processes.

[0003] The traditional automatic glue dispensing machine for paper boxes is mainly composed of a conveying device, a glue dispensing system, a control system, etc. Among them, the glue dispensing head is a key component that is in direct contact with the glue and is responsible for applying the glue to the surface of the paper box; however, in actual applications, due to the viscosity and fluidity of the glue itself, as well as the design defects or improper maintenance of the glue dispensing head, when the glue dispensing machine is performing the gluing task, a small amount of glue will inevitably be attached to the glue dispensing head. These residual glue will gradually accumulate after multiple operations to form larger clots or drips, especially in the case of high-speed continuous operation. This phenomenon is more obvious. Once the glue on the glue dispensing head accumulates to a certain extent, unexpected dripping is likely to occur. These accidentally dropped glues will not only dirty the conveying device and affect its normal operation, but may also cause subsequent unprocessed paper boxes to be contaminated, thereby affecting product quality and appearance. Summary of the invention

[0004] In view of this, the present invention provides an automatic gluing machine for paper boxes, which can solve the shortcomings of traditional automatic gluing machines for paper boxes, that is, large clots or drips will be formed on the glue discharge head during use, which will not only dirty the conveying device and affect its normal operation, but also may cause subsequent unprocessed paper boxes to be contaminated, thereby affecting product quality and appearance.

[0005] The technical scheme of the present invention is: an automatic glue drawing machine for paper boxes, including a conveyor, a support frame is installed on the top of the conveyor, a guide mechanism is arranged between the support frame and the conveyor, the guide mechanism is used to guide the paper box conveyed on the conveyor, and a positioning mechanism is arranged on the support frame for positioning the paper box being conveyed, a first mounting plate is symmetrically installed on the support frame, a first cylinder is installed on the first mounting plate, a second mounting plate is connected to the telescopic rod of the first cylinder, a glue discharging device is installed on the second mounting plate, a glue discharging head for discharging glue is arranged on the glue discharging device, a sliding cylinder is slidably arranged on the glue discharging head of the glue discharging device, the sliding cylinder is used to scrape off the glue adhered to the side of the glue discharging head, a connecting frame is installed on the first cylinder, a first electric push rod is installed on the connecting frame, a fixed frame is connected to the telescopic rod of the first electric push rod, a scraper is arranged on the fixed frame, the scraper is used to scrape off the glue adhered to the bottom end of the glue discharging head, a heat conducting block is connected to the fixed frame, a collecting plate for collecting glue is installed on the heat conducting block, and a magnetic suction mechanism for driving the sliding cylinder to slide is arranged on the fixed frame.

[0006] In one embodiment, the guiding mechanism includes a second electric push rod, a first guide rod, a connecting rod and a second guide rod. The second electric push rod is symmetrically arranged on the conveyor, the telescopic rod of the second electric push rod is connected to the first guide rod, the connecting rod is symmetrically arranged on the support frame, and the connecting rod is connected to the second guide rod. The first guide rod and the second guide rod are both used to guide the paper boxes transported on the conveyor.

[0007] In one embodiment, the positioning mechanism includes a mounting frame, a second cylinder and a baffle. The mounting frame is symmetrically mounted on the support frame, the second cylinder is disposed on the mounting frame, and the baffle is connected to the telescopic rod of the second cylinder. The baffle is used to block the carton in transport to position the carton.

[0008] In one embodiment, the magnetic attraction mechanism includes an elastic rope, a first magnetic block, a sliding frame, a spring and a second magnetic block. The elastic rope is connected between the sliding cylinder and the glue discharging device, the first magnetic block is installed on the side of the sliding cylinder, the sliding frame is slidably installed on the fixed frame, a spring is connected between the sliding frame and the fixed frame, and the second magnetic block is connected to the sliding frame.

[0009] In one of the embodiments, a heating plate is further included. The bottom of the heat-conducting block is equipped with a heating plate, and the heating plate is used to heat the heat-conducting block to soften the glue in the collection tray through heat conduction.

[0010] In one of the embodiments, a return mechanism is also included, which includes a connecting block, a third cylinder and a push plate. The connecting block is installed on the end of the first guide rod, the third cylinder is installed on the bottom of the connecting block, and the push plate is connected to the telescopic rod of the third cylinder. The push plate is used to push the paper box to return to the center.

[0011] In one of the embodiments, a pressure mechanism is also included, which includes a rotating block, an electric roller, a rubber sleeve, a spring and a pushing member. The first guide rod and the second guide rod are both provided with rotating blocks at intervals on the top, an electric roller is installed between two adjacent rotating blocks, and a rubber sleeve is connected to the outside of the electric roller. The electric roller is used to apply pressure to the paper box through the rubber sleeve. The first guide rod and the second guide rod are respectively provided with springs between the rotating blocks thereon, and the first guide rod and the second guide rod are both provided with pushing members, which are used to push the rotating blocks to rotate.

[0012] In one embodiment, the pushing member includes a third electric push rod and a push block. The third electric push rod is installed at intervals on the sides of the first guide rod and the second guide rod. The push block is connected to the telescopic rod of the third electric push rod, and the push block is used to push the rotating block to rotate.

[0013] The beneficial effects are: 1. The present invention can not only adjust the spacing according to cartons of different sizes and adapt to the production needs of products of various specifications through the cooperation of the guiding mechanism and the positioning mechanism, but also can accurately position the cartons at the specified position, providing a guarantee for accurate gluing. Then, through the design of the sliding cylinder and the scraper, the glue adhering to the side and bottom of the glue head can be automatically removed after each gluing to prevent the residual glue from forming clots or dripping, which not only ensures the cleanliness of the equipment and the quality of subsequent processing, but also ensures the neat appearance of each carton, thereby improving the quality of the final product.

[0014] 2. The present invention can soften the solidified glue in the collection tray by providing a heating plate, so as to facilitate cleaning by the operator, thereby reducing maintenance difficulty and improving work efficiency.

[0015] 3. The present invention can apply appropriate pressure to the paper box by providing a pressure mechanism to ensure that the bottom surface is flat, avoid the problem of gluing position deviation caused by deformation of the paper box, and further enhance the stability and reliability of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the second electric push rod, the connecting rod and the mounting frame of the present invention.

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the guiding mechanism and the positioning mechanism of the present invention.

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the first mounting plate, the first cylinder and the second mounting plate of the present invention.

[0020] Figure 5It is a three-dimensional structural schematic diagram of the glue dispensing device, glue dispensing head and sliding cylinder of the present invention.

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure of the magnetic attraction mechanism of the present invention.

[0022] Figure 7 It is a schematic diagram of the three-dimensional structure of the heat conducting block, the collecting plate and the heating plate of the present invention.

[0023] Figure 8 It is a schematic diagram of the three-dimensional structure of the conveyor, the first guide rod and the connecting block of the present invention.

[0024] Fig. 9 It is a schematic diagram of the three-dimensional structure of the connecting block, the third cylinder and the push plate of the present invention.

[0025] Fig.10 It is a schematic diagram of the three-dimensional structure of the rotating block, the spring piece and the third electric push rod of the present invention.

[0026] Fig.11 It is a schematic diagram of the three-dimensional structure of the pressure-applying mechanism of the present invention.

[0027] The markings in the figure are: 1- conveyor, 101- paper box, 2- support frame, 301- second electric push rod, 302- first guide rod, 303- connecting rod, 304- second guide rod, 401- mounting frame, 402- second cylinder, 403- baffle, 5- first mounting plate, 6- first cylinder, 7- second mounting plate, 8- glue dispensing equipment, 801- glue dispensing head, 9- sliding cylinder, 10- connecting frame, 11- first electric push rod, 12-fixed frame, 13-scraper, 14-heat conductive block, 15-collecting plate, 1601-elastic rope, 1602-first magnetic block, 1603-sliding frame, 1604-spring, 1605-second magnetic block, 17-heating plate, 18-connecting block, 19-third cylinder, 20-push plate, 21-rotating block, 22-electric roller, 23-rubber sleeve, 24-shrapnel, 2501-third electric push rod, 2502-push block. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0029] Embodiment: A paper box automatic glue drawing machine, see Figure 1-Figure 6As shown, it includes a conveyor 1; the conveyor 1 is used to convey the paper box 101; it also includes a support frame 2, a guiding mechanism, a positioning mechanism, a first mounting plate 5, a first cylinder 6, a second mounting plate 7, a glue dispensing device 8, a glue dispensing head 801, a sliding cylinder 9, a connecting frame 10, a first electric push rod 11, a fixing frame 12, a scraper 13, a heat conducting block 14, a collecting plate 15 and a magnetic suction mechanism; the conveyor 1 is equipped with a support frame 2 on the top; a guiding mechanism is arranged between the support frame 2 and the conveyor 1, and the guiding mechanism is used to guide the paper box 101 conveyed on the conveyor 1; a positioning mechanism for positioning the paper box 101 being conveyed is arranged on the support frame 2, so that the paper box 101 can stop at a specified position; the first mounting plates 5 are symmetrically installed on the upper side of the support frame 2, and the number of the first mounting plates 5 is eight; the first cylinder 6 is installed on the lower side of the first mounting plate 5; the telescopic rod of the first cylinder 6 is connected to the second mounting plate 7; the second mounting plate 7 Two glue discharging devices 8 are installed on the glue discharging device 8; a glue discharging head 801 for discharging glue is arranged on the glue discharging device 8; a sliding cylinder 9 is slidably arranged on the glue discharging head 801 of the glue discharging device 8, and the sliding cylinder 9 is used to scrape off the glue adhered to the side of the glue discharging head 801, so as to prevent the glue from sticking to the side of the glue discharging head 801 and causing residue; a connecting frame 10 is installed on the first cylinder 6; two first electric push rods 11 are installed on the connecting frame 10; a fixed frame 12 is connected between the telescopic rods of the two first electric push rods 11; a scraper 13 is arranged on the side of the fixed frame 12 close to the glue discharging head 801, and the scraper 13 is used to scrape off the glue adhered to the bottom end of the glue discharging head 801, so as to prevent the glue from sticking to the bottom end of the glue discharging head 801 and causing residue; a heat conducting block 14 is connected to the lower side of the fixed frame 12, and two collecting trays 15 for collecting glue are installed on the top of the heat conducting block 14, and the collecting trays 15 are made of metal heat conducting material; a magnetic suction mechanism for driving the sliding cylinder 9 to slide is arranged on the fixed frame 12.

[0030] See also Figure 2 and Figure 3 As shown, the guiding mechanism includes a second electric push rod 301, a first guide rod 302, a connecting rod 303 and a second guide rod 304; the second electric push rods 301 are symmetrically arranged on the top of the conveyor 1, and the number of the second electric push rods 301 is six; the first guide rod 302 is connected between the telescopic rods of the three second electric push rods 301 on the same side; the connecting rods 303 are symmetrically arranged on the upper side of the support frame 2, and the number of the connecting rods 303 is four, and the second guide rod 304 is connected between the lower sides of the two connecting rods 303 on the same side, and the first guide rod 302 and the second guide rod 304 are both used to guide the paper box 101 transported on the conveyor 1.

[0031] See also Figure 2 and Figure 3As shown, the positioning mechanism includes a mounting frame 401, a second cylinder 402 and a baffle 403; the mounting frames 401 are symmetrically installed on the front and back sides of the upper side of the support frame 2, and the number of the mounting frames 401 is eight; the second cylinder 402 is arranged on the lower left side of the mounting frame 401; the baffle 403 is connected to the telescopic rod of the second cylinder 402, and the baffle 403 is used to block the paper box 101 being transported to position the paper box 101.

[0032] See also Figure 6 As shown, the magnetic attraction mechanism includes an elastic rope 1601, a first magnetic block 1602, a sliding frame 1603, a spring 1604 and a second magnetic block 1605; an elastic rope 1601 is connected between the sliding cylinder 9 and the glue discharging device 8; a first magnetic block 1602 is installed on the side of the sliding cylinder 9 close to the fixed frame 12; two sliding frames 1603 are slidably installed on the upper side of the fixed frame 12; two springs 1604 are connected between the sliding frame 1603 and the fixed frame 12; a second magnetic block 1605 is connected on the side of the sliding frame 1603 close to the sliding cylinder 9.

[0033] When in use, the conveyor 1 is started, and then the baffle 403 is driven to move downward by the second cylinder 402. Then, according to the width of the paper box 101, the first guide rod 302 is driven to move forward or backward by the second electric push rod 301 to adjust the distance between the first guide rod 302 and the second guide rod 304, so that the distance between the first guide rod 302 and the second guide rod 304 is adapted to the width of the paper box 101. Then, the paper boxes 101 are placed on the top left side of the conveyor 1 (such as Figure 2As shown), the conveyor 1 conveys the paper box 101 to the right. When the paper box 101 contacts the first guide rod 302 and the second guide rod 304, the first guide rod 302 and the second guide rod 304 will guide the paper box 101, so that the paper box 101 is conveyed between the first guide rod 302 and the second guide rod 304. When the paper box 101 contacts the baffle 403, the baffle 403 will block the movement of the paper box 101, so that the paper box 101 stays on the conveyor 1, and then the second mounting plate 7, the glue dispensing device 8 and the glue dispensing head 801 are driven downward by the first cylinder 6, so that the glue dispensing head 801 is close to the position where the paper box 101 needs to be glued, and then the glue dispensing device 8 is controlled to apply glue to the designated position of the paper box 101 through the glue dispensing head 801. Position, and then drive the second mounting plate 7, the glue discharging device 8 and the glue discharging head 801 to move upward and reset through the first cylinder 6. In this way, the glue coating can be completed at one position of the paper box 101. After the glue discharging head 801 moves upward and resets, the first electric push rod 11 drives the fixing frame 12, the scraper 13, the heat conducting block 14, the collecting plate 15, the sliding frame 1603 and the second magnetic block 1605 to move toward the side close to the glue discharging head 801. As the second magnetic block 1605 gradually approaches the first magnetic block 1602, the magnetic attraction between the second magnetic block 1605 and the first magnetic block 1602 will gradually increase. When the magnetic attraction between the second magnetic block 1605 and the first magnetic block 1602 is greater than the elastic force of the elastic rope 1601, the second magnetic block 1605 is moved to the side close to the glue discharging head 801. The second magnetic block 1605 will attract the first magnetic block 1602 and the sliding cylinder 9 to move downward (eventually the first magnetic block 1602 will be on top of the second magnetic block 1605), and the elastic rope 1601 will be deformed, so that the sliding cylinder 9 will scrape off the glue adhering to the side of the glue discharge head 801, and the scraped glue will fall into the collection tray 15 for collection. When the second magnetic block 1605 contacts the side of the sliding cylinder 9, the side of the sliding cylinder 9 will block the movement of the second magnetic block 1605 and the sliding frame 1603. Then, as the fixed frame 12 and the scraper 13 continue to move to the left, the spring 1604 is compressed. When the scraper 13 contacts the bottom end of the glue discharge head 801, the scraper 13 will scrape off the glue adhering to the bottom end of the glue discharge head 801, and the scraped glue will fall into the collection tray 15 for collection. In this way, the glue adhering to the surface of the glue head 801 can be cleaned to prevent the glue from sticking to the surface of the glue head 801 and causing residue. Then, the first electric push rod 11 drives the fixed frame 12, the scraper 13, the heat conductive block 14 and the collecting plate 15 to move and reset to the side away from the glue head 801, so that the scraper 13 is separated from the bottom end of the glue head 801. During this period, the spring 1604 gradually returns to its original state. After the spring 1604 is reset, the fixed frame 12 will drive the sliding frame 1603 and the second magnetic block 1605 to move and reset to the side away from the glue head 801 through the spring 1604. As the second magnetic block 1605 gradually moves away from the first magnetic block 1602, the magnetic attraction between the second magnetic block 1605 and the first magnetic block 1602 will gradually decrease.When the magnetic attraction between the second magnetic block 1605 and the first magnetic block 1602 is less than the elastic force of the elastic rope 1601, the elastic rope 1601 returns to its original state, and the elastic rope 1601 drives the sliding cylinder 9 and the first magnetic block 1602 to move upward and reset, and then the baffle 403 is driven upward and reset by the second cylinder 402, so that the baffle 403 no longer blocks the paper box 101, so that the conveyor 1 continues to convey the paper box 101 to the right. After the paper box 101 is conveyed to the right, the baffle 403 is driven by the second cylinder 402. Move downward, so that the baffle 403 blocks the next paper box 101. When the paper box 101 is transported to the right and contacts the next baffle 403, repeat the above operation to complete the gluing of other positions of the paper box 101 until all positions of the paper box 101 are gluing and conveyed to the right through the conveyor 1. When all paper boxes 101 are gluing, the baffle 403 is driven upward and reset by the second cylinder 402, and then the conveyor 1 is closed, and finally the glue in the collection tray 15 is cleaned up.

[0034] See also Figure 7 As shown, a heating plate 17 is also included; a heating plate 17 is installed at the bottom of the heat-conducting block 14, and the heating plate 17 is used to heat the heat-conducting block 14 to soften the glue in the collecting tray 15 through heat conduction.

[0035] By setting up the heating plate 17, when it is necessary to clean the glue in the collection tray 15, the heat conductive block 14 can be heated by the heating plate 17, so that the heat conductive block 14 softens the glue in the collection tray 15 by heat conduction, thereby facilitating the operator to clean the glue in the collection tray 15.

[0036] See also Figure 8 and Fig. 9 As shown, it also includes a return mechanism, which includes a connecting block 18, a third cylinder 19 and a push plate 20; the right ends of the two first guide rods 302 that are away from each other are both equipped with a connecting block 18; the third cylinder 19 is installed at the bottom of the connecting block 18; the push plate 20 is connected to the telescopic rod of the third cylinder 19, and the push plate 20 is used to push the paper box 101 to return.

[0037] By setting up a return mechanism, when all positions of the paper box 101 are glued and transported to the right through the conveyor 1, the left half of the paper box 101 will be transported to the right to be aligned with the push plate 20. At this time, the third cylinder 19 drives the push plate 20 to move to the side close to the paper box 101, so that the push plate 20 can push the left half of the paper box 101, so that the paper box 101 is forced to rotate, thereby completing the return of the paper box 101, so that the paper box 101 can be transported to the right after returning to the right, so as to proceed to the next step. After the paper box 101 is returned to the right, the third cylinder 19 drives the push plate 20 to move and reset.

[0038] See also Fig.10 and Fig.11 As shown, it also includes a pressure mechanism, which includes a rotating block 21, an electric roller 22, a rubber sleeve 23, a spring 24 and a pusher; four groups of rotating blocks 21 are arranged at intervals on the top of the first guide rod 302 and the second guide rod 304, and the number of rotating blocks 21 in one group is two, and the two rotating blocks 21 in one group are distributed on the left and right; an electric roller 22 is installed between the two rotating blocks 21 in one group; the outer side of the electric roller 22 is connected to the rubber sleeve 23, and the electric roller 22 is used to press the paper box 101 through the rubber sleeve 23; the first guide rod 302 and its A spring piece 24 is installed between the rotating blocks 21 on it, and a spring piece 24 is also installed between the second guide rod 304 and the rotating block 21 on it; the pushing member includes a third electric push rod 2501 and a push block 2502, and four groups of third electric push rods 2501 are installed at intervals on the sides of the first guide rod 302 and the second guide rod 304, and the number of third electric push rods 2501 in a group is two, and the two third electric push rods 2501 in a group are distributed on the left and right; the telescopic rod of the third electric push rod 2501 is connected to the push block 2502, and the push block 2502 is used to push the rotating block 21 to rotate.

[0039] By setting a pressure mechanism, when the paper box 101 transported on the conveyor 1 is stopped by the baffle 403, the third electric push rod 2501 can drive the push block 2502 to move upward, so that the push block 2502 contacts the rotating block 21, and the push block 2502 squeezes the rotating block 21 and the electric roller 22 to swing toward the side close to the paper box 101, and the spring piece 24 is deformed until the rubber sleeve 23 on the electric roller 22 contacts the side of the paper box 101, and then the rubber sleeve 23 is driven by the electric roller 22 to rotate, so that the rubber sleeve 23 uses friction to apply a downward force to the side of the paper box 101, so that the bottom surface of the paper box 101 It is flat to prevent the height of the paper box 101 from being too high (if the bottom surface of the paper box 101 is an arc surface with a low middle and high edges, the height of the paper box 101 may be too high, causing the position on the paper box 101 where glue is required to be applied to be offset, resulting in inaccurate gluing position); when the paper box 101 is glued, the third electric push rod 2501 drives the push block 2502 to move downward and reset, so that the push block 2502 is separated from the rotating block 21. At this time, the spring piece 24 returns to its original state, and the spring piece 24 drives the rotating block 21 and the electric roller 22 to swing and reset to the side away from the paper box 101 until the rubber sleeve 23 on the electric roller 22 is separated from the side of the paper box 101.

[0040] The above description is only an example of the present invention and is not intended to limit the present invention. Any equivalent substitutions made within the principles of the present invention should be included in the protection scope of the present invention. The contents not elaborated in detail in the present invention belong to the existing technologies known to those skilled in the art.

Claims

1. A paper box automatic glue painting machine, comprising a conveyor (1), characterized in that: A support frame (2) is installed on the top of the conveyor (1), a guide mechanism is arranged between the support frame (2) and the conveyor (1), the guide mechanism is used to guide the paper box (101) being transported on the conveyor (1), a positioning mechanism is arranged on the support frame (2) for positioning the paper box (101) being transported, a first mounting plate (5) is symmetrically installed on the support frame (2), a first cylinder (6) is installed on the first mounting plate (5), a second mounting plate (7) is connected to the telescopic rod of the first cylinder (6), a glue dispensing device (8) is installed on the second mounting plate (7), a glue dispensing head (801) for dispensing glue is arranged on the glue dispensing device (8), and the glue dispensing head (801) of the glue dispensing device (8) is connected to the telescopic rod of the first cylinder (6), and a glue dispensing device (8) is connected to the telescopic rod of the first cylinder (6). 1) is slidably provided with a sliding cylinder (9), the sliding cylinder (9) is used to scrape off the glue adhered to the side of the glue discharge head (801), a connecting frame (10) is installed on the first cylinder (6), a first electric push rod (11) is installed on the connecting frame (10), a fixed frame (12) is connected to the telescopic rod of the first electric push rod (11), a scraper (13) is provided on the fixed frame (12), the scraper (13) is used to scrape off the glue adhered to the bottom end of the glue discharge head (801), a heat conducting block (14) is connected to the fixed frame (12), a collecting plate (15) for collecting glue is installed on the heat conducting block (14), and a magnetic attraction mechanism for driving the sliding cylinder (9) to slide is provided on the fixed frame (12).

2. The automatic glue painting machine for paper boxes as claimed in claim 1, characterized in that: The guide mechanism comprises a second electric push rod (301), a first guide rod (302), a connecting rod (303) and a second guide rod (304); the second electric push rod (301) is symmetrically arranged on the conveyor (1); the telescopic rod of the second electric push rod (301) is connected to the first guide rod (302); the connecting rod (303) is symmetrically arranged on the support frame (2); the connecting rod (303) is connected to the second guide rod (304); the first guide rod (302) and the second guide rod (304) are both used to guide the paper box (101) transported on the conveyor (1).

3. The automatic glue painting machine for paper boxes as claimed in claim 2, characterized in that: The positioning mechanism comprises a mounting frame (401), a second cylinder (402) and a baffle (403); the mounting frame (401) is symmetrically mounted on the support frame (2); the second cylinder (402) is arranged on the mounting frame (401); the baffle (403) is connected to the telescopic rod of the second cylinder (402); the baffle (403) is used to block the paper box (101) being transported so as to position the paper box (101).

4. The automatic glue painting machine for paper boxes as claimed in claim 3, characterized in that: The magnetic attraction mechanism comprises an elastic rope (1601), a first magnetic block (1602), a sliding frame (1603), a spring (1604) and a second magnetic block (1605); the elastic rope (1601) is connected between the sliding cylinder (9) and the glue discharging device (8); the first magnetic block (1602) is installed on the side of the sliding cylinder (9); the sliding frame (1603) is slidably installed on the fixed frame (12); the spring (1604) is connected between the sliding frame (1603) and the fixed frame (12); and the second magnetic block (1605) is connected to the sliding frame (1603).

5. The automatic glue painting machine for paper boxes as claimed in claim 4, characterized in that: It also includes a heating plate (17) installed at the bottom of the heat-conducting block (14). The heating plate (17) is used to heat the heat-conducting block (14) so ​​as to soften the glue in the collecting plate (15) through heat conduction.

6. The automatic glue painting machine for paper boxes as claimed in claim 5, characterized in that: The invention also comprises a return mechanism, which comprises a connecting block (18), a third cylinder (19) and a push plate (20). The end of the first guide rod (302) is provided with a connecting block (18), the bottom of the connecting block (18) is provided with a third cylinder (19), and the telescopic rod of the third cylinder (19) is connected with a push plate (20), and the push plate (20) is used to push the paper box (101) to return to the original position.

7. The automatic glue painting machine for paper boxes as claimed in claim 6, characterized in that: The invention also comprises a pressure mechanism, which comprises a rotating block (21), an electric roller (22), a rubber sleeve (23), a spring piece (24) and a pushing member. The rotating blocks (21) are arranged at intervals on the top of the first guide rod (302) and the second guide rod (304), the electric roller (22) is installed between two adjacent rotating blocks (21), the outer side of the electric roller (22) is connected with the rubber sleeve (23), the electric roller (22) is used to apply pressure to the paper box (101) through the rubber sleeve (23), the spring piece (24) is installed between the first guide rod (302) and the second guide rod (304) and the rotating blocks (21) thereon respectively, and the pushing member is installed on the first guide rod (302) and the second guide rod (304), and the pushing member is used to push the rotating block (21) to rotate.

8. The automatic glue painting machine for paper boxes as claimed in claim 7, characterized in that: The pushing member comprises a third electric push rod (2501) and a push block (2502); the third electric push rod (2501) is installed at intervals on the sides of the first guide rod (302) and the second guide rod (304); the push block (2502) is connected to the telescopic rod of the third electric push rod (2501); the push block (2502) is used to push the rotating block (21) to rotate.

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