Printing packaging box film covering device

Abstract

The utility model relates to the field of printing equipment, in particular to a printing packaging box film covering device which comprises a conveying assembly, a mounting shell and a gluing assembly, the gluing assembly comprises a glue storage box, a pressing plate, a first electric push rod, a fixing groove, a baffle and a driving mechanism, and the lower portion of the side, close to the feeding single end of the conveying assembly, of the glue storage box is arranged to be an arc-shaped outer wall; the fixing grooves and the baffles have the same radian as the arc-shaped outer wall of the glue storage box, a glue outlet is formed in the bottom of the glue storage box, and when a packaging box paperboard is conveyed to the position below the glue outlet by the conveying assembly, the driving mechanism can drive the baffles to open the glue outlet, and the first electric push rod pushes the pressing plate to discharge glue. And after the packaging box paperboard completely passes through the glue outlet, the driving mechanism drives the baffle to close the glue outlet, and the first electric push rod stops glue pressing, so that the effect of uniformly gluing the packaging box paperboard is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of printing equipment, in particular to a printing packaging box film coating device. BACKGROUND

[0002] At present, when the packaging box is produced and manufactured, a layer of film is coated on the outer layer of the paperboard after the printing of the packaging box paperboard is completed, so that the packaging box can be dustproof and waterproof, thereby protecting the whole packaging box, and the printed packaging box after being coated with the film can present better gloss and wear resistance, making the packaging box more practical.

[0003] During the film coating process of the packaging box paperboard, the paperboard needs to be glued first, and then coated with the film.

[0004] The prior art in the above has the following defects: after the existing equipment completes the gluing of the packaging box paperboard, uneven gluing is prone to occur, and bubbles or wrinkles are prone to occur during the subsequent film coating process, resulting in poor use effect after the film coating. CONTENT OF THE INVENTION

[0005] In order to uniformly glue the packaging box paperboard and improve the use effect after the film coating, the present application provides a printing packaging box film coating device.

[0006] The above technical purpose of the present application is realized by the following technical scheme:

[0007] A printing packaging box film coating device, comprising a conveying assembly, a mounting shell arranged on the conveying assembly, and a gluing assembly arranged on the mounting shell, the gluing assembly comprising a glue storage box fixedly connected to the top of the mounting shell and protruding from the top of the mounting shell, a pressing plate arranged in the glue storage box, a first electric push rod fixedly connected to the top of the glue storage box and having a piston rod penetrating into the glue storage box and being fixedly connected with the pressing plate, a fixed groove fixedly connected to one side of the glue storage box close to the feeding end of the conveying assembly, a baffle movably arranged between the fixed groove and the glue storage box, and a driving mechanism arranged on the outer wall of the glue storage box, wherein the side of the glue storage box close to the feeding end of the conveying assembly is provided with an arc-shaped outer wall at the lower part, the fixed groove and the baffle are both machined with an arc corresponding to the arc-shaped outer wall of the glue storage box, and a glue outlet is arranged at the bottom of the glue storage box, when the packaging box paperboard is conveyed to below the glue outlet by the conveying assembly, the driving mechanism can drive the baffle to open the glue outlet and the first electric push rod pushes the pressing plate to glue out, and when the packaging box paperboard completely passes through the glue outlet, the driving mechanism drives the baffle to close the glue outlet and the first electric push rod stops gluing.

[0008] By adopting the above technical scheme, the conveying assembly can continuously convey a large number of packaging box paperboards to below the glue outlet, the first electric push rod can stably press out the glue in the glue storage box and uniformly fall on the packaging box paperboard by the self weight of the glue, the fixed groove and the baffle in an arc shape can smoothly open and close the glue outlet, thereby facilitating the control of the uniformity of glue outlet, and the purpose of uniformly gluing the packaging box paperboard can be achieved, and the situation that bubbles or wrinkles appear between the film and the packaging box paperboard in the subsequent film covering process of the film covering device can be reduced.

[0009] Optionally, the driving mechanism comprises a driving motor fixedly arranged on the outer wall of the glue storage box, a rotating disc rotatably arranged on the rotating shaft of the driving motor, a driving plate eccentrically arranged at the upper end and rotatably connected to the rotating disc, a connecting rod rotatably connected to the lower end of the driving plate, a guide pipe sleeved on the connecting rod and fixedly connected to the fixed groove at the lower end, and a distance measuring sensor fixedly arranged on the outer wall of the fixed groove and close to the glue outlet, the distance measuring sensor is electrically connected with a PLC processor, the PLC processor is electrically connected with the driving motor and the first electric push rod, and the lower end of the connecting rod penetrates through the guide pipe and is fixedly connected to the baffle.

[0010] By adopting the above technical scheme, when the packaging box paperboard is conveyed to below the distance measuring sensor on the conveying belt, the distance data measured by the distance measuring sensor becomes smaller, thereby sending a signal to the PLC processor, and after the PLC sensor obtains the signal that the distance becomes smaller, the first electric push rod is synchronously controlled to press the glue downward, the driving motor is controlled to work, and the baffle is opened, thereby uniformly extruding the glue from the glue outlet to the packaging box paperboard, when the packaging box paperboard completely passes below the distance measuring sensor, the distance measuring value of the distance measuring sensor is restored, the first electric push rod is controlled to stop pressing downward by the PLC sensor, the driving motor is controlled to work again and the baffle is controlled to close the glue outlet, and the first electric push rod and the driving motor are accurately controlled to work, thereby facilitating the gluing work of one packaging box paperboard.

[0011] Optionally, a winding drum is rotatably arranged on the top of the mounting shell and away from the feeding end of the conveying assembly, and a strip-shaped hole is arranged on the top of the mounting shell and used for allowing the film to enter the inside of the mounting shell.

[0012] Optionally, a flattening assembly is arranged on the top of the mounting shell and away from the glue storage box, the flattening assembly comprises a second electric push rod vertically arranged on the top of the mounting shell, a connecting frame fixedly connected to the lower end of the second electric push rod, a flattening roller rotatably arranged on the connecting frame, and a flattening motor arranged on the connecting frame and used for driving the flattening roller, and the flattening roller is arranged in a spaced manner with the conveying plane of the conveying assembly.

[0013] By adopting the above technical scheme, after the packaging box paperboard after gluing and film covering is rolled and extruded by the flattening roller, the situation that bubbles appear between the film and the packaging box can be further reduced.

[0014] Optionally, a cutting assembly is mounted on the inner top of the mounting shell and located on the side of the flattening assembly away from the winding drum, the cutting assembly comprising a third electric push rod fixed at the upper end of the inner top of the mounting shell and a cutter fixed at the lower end of the third electric push rod.

[0015] Optionally, the conveying assembly comprises two fixed plates, a conveying belt rotatably arranged between the two fixed plates, a support leg fixed to the two fixed plates, and a conveying motor fixed to the fixed plates for driving the conveying belt.

[0016] By adopting the above technical scheme, a large number of packaging box paperboards placed on the conveying belt are limited between the two fixed plates, reducing the deviation of the packaging box paperboards during the conveying process, thereby facilitating the subsequent gluing and film covering work of the packaging box paperboards.

[0017] Optionally, the mounting shell comprises two side plates fixed to the two fixed plates respectively, a top plate horizontally connected to the top of the two side plates, and a reinforcing plate fixed between the top plate and the side plates in a right triangle shape.

[0018] By adopting the above technical scheme, the mounting shell has a simple structure and can provide a stable mounting basis for the gluing assembly, the winding drum, the flattening assembly, and the cutting assembly.

[0019] Optionally, a glue injection port is formed on the side wall of the glue storage box protruding from the top of the mounting shell and away from the feeding end of the conveying assembly, and when the pressing plate is attached to the inner top of the glue storage box, the pressing plate is higher than the upper edge of the glue injection port.

[0020] By adopting the above technical scheme, the glue storage box can be supplemented with glue.

[0021] In summary, the present application has the following technical effects:

[0022] 1. By providing the conveying assembly, the mounting shell, and the gluing assembly, the conveying assembly can continuously convey a large number of packaging box paperboards to below the glue outlet, the first electric push rod cooperates with the driving mechanism synchronously, and the glue in the glue storage box can be stably pressed out and evenly fall on the packaging box paperboard by the weight of the glue. The fixed groove and the baffle in an arc shape can smoothly open and close the glue outlet, thereby facilitating the control of the uniformity of glue discharge, and achieving the purpose of uniform gluing of the packaging box paperboard, reducing the occurrence of bubbles or wrinkles between the film and the packaging box paperboard in the subsequent film covering process of the film covering device;

[0023] 2. By providing the driving motor, the rotating disc, the driving plate, the connecting rod, the guide pipe, and the distance measuring sensor and the PLC processor, the first electric push rod and the driving motor can be accurately controlled to work, thereby facilitating the completion of the gluing work of one packaging box paperboard.

[0024] 3. By setting the second electric push rod, connecting frame, pressure roller, and flattening motor, after the packaging box paperboard after gluing and film coating is rolled and extruded by the pressure roller, it can further reduce the occurrence of bubbles between the film and the packaging box. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is the outer shape structure diagram of the present application;

[0026] Figure 2 is the structure diagram of the opened mounting shell;

[0027] Figure 3 is the structure diagram of the glue applying assembly;

[0028] Figure 4 is the structure diagram of the glue applying assembly from another perspective.

[0029] BRIEF DESCRIPTION OF DRAWINGS: 1, conveying assembly; 11, fixed plate; 12, conveying belt; 13, support leg; 14, conveying motor; 2, mounting shell; 21, side plate; 211, operation port; 22, top plate; 221, support seat; 23, reinforcing plate; 3, glue applying assembly; 31, glue storage box; 311, cover plate; 312, vertical plate; 3121, glue injection port; 313, connecting plate; 3131, observation window; 314, arc-shaped plate; 315, glue outlet; 32, pressing plate; 33, first electric push rod; 34, fixed groove; 35, baffle; 36, driving mechanism; 361, guide pipe; 362, connecting rod; 363, driving plate; 364, turntable; 365, driving motor; 37, distance measuring sensor; 4, winding drum; 41, film coating motor; 5, flattening assembly; 51, second electric push rod; 52, connecting frame; 53, pressure roller; 54, flattening motor; 6, cutting assembly; 61, third electric push rod; 62, cutter. DETAILED DESCRIPTION

[0030] The present application will be further described in detail below with reference to the accompanying drawings.

[0031] The embodiment of the present application discloses a printing packaging box film coating device, which is arranged at the discharge port end of a printing machine. After the packaging box paperboard is printed, it can enter the film coating device to perform film coating work. Figure 1 and Figure 2 The film coating device includes a conveying assembly 1 arranged at the discharge port end of the printing machine and lower than the discharge port end of the printing machine, a mounting shell 2 fixedly arranged at the upper part of the conveying assembly 1, a glue applying assembly 3, a winding drum 4, a flattening assembly 5 arranged in sequence along the conveying direction of the conveying assembly 1 on the mounting shell 2, and a cutting assembly 6 arranged on the mounting shell 2 for cutting the film material.

[0032] Refer to Figure 1The conveying assembly 1 comprises two horizontally and spaced apart fixing plates 11, a conveying belt 12 rotatably arranged between the two fixing plates 11, two support legs 13 vertically fixed on each fixing plate 11, and a conveying motor 14 fixed on an outer surface of one fixing plate 11 and used for driving the conveying belt 12 to rotate. The conveying direction of the conveying belt 12 is consistent with the discharging direction of the printing machine, and the conveying plane of the conveying belt 12 is lower than the discharging port of the printing machine, so that the packaging box paperboard can automatically enter the conveying belt 12 by gravity after the printing is completed, and the continuous processing work of the packaging box paperboard after the printing is completed is facilitated.

[0033] In combination Figure 1 and Figure 2 The mounting shell 2 comprises two side plates 21 with parallel and spaced apart surfaces, a top plate 22 horizontally connected between the two side plates 21, and four triangular reinforcing plates 23. Two straight edges of the reinforcing plates 23 are fixedly connected with the inner walls of the side plates 21 and the top plate 22 adjacent to each other, so as to improve the connection stability of the side plates 21 and the top plate 22. The two side plates 21 are fixedly arranged on the upper portions of the two fixing plates 11, so that the mounting shell 2 is stably arranged on the conveying assembly 1, and provides a mounting basis for the gluing assembly 3 and other components.

[0034] In combination Figure 2 The two side plates 21 are respectively provided with a rectangular operation opening 211. The operation opening 211 is located below the winding drum 4, and the lower edge of the operation opening 211 is higher than the conveying belt 12. When the packaging box paperboard is conveyed on the conveying belt 12, the portion of the side plate 21 below the operation opening 211 can limit the packaging box paperboard, so as to reduce the possibility of deviation of the packaging box paperboard during the conveying process on the conveying belt 12. Through the operation opening 211, the film covering condition inside the mounting shell 2 can be observed in real time. When the packaging box paperboard or the film deviates, the operator can also perform deviation correction operation on the packaging box paperboard or the film through the operation opening 211.

[0035] In combination Figure 3 and Figure 4The glue coating assembly 3 comprises a glue storage box 31 arranged on the top plate 22 and inside the mounting shell 2, a pressing plate 32 movably arranged inside the glue storage box 31, and a first electric push rod 33 vertically arranged on the top surface of the glue storage box 31 and with a piston rod fixed to the plate surface of the pressing plate 32. The glue storage box 31 comprises a cover plate 311 in the shape of a strip-shaped plate, a vertical plate 312 fixed to one side of the cover plate 311 in the length direction, two connecting plates 313 fixed to the two sides of the cover plate 311 in the width direction, and an arc-shaped plate 314 fixed to the side of the cover plate 311 and the two connecting plates 313 away from the vertical plate 312, wherein the upper section of the arc-shaped plate 314 is a vertical section and the lower section is an arc-shaped section. The arc-shaped plate 314 is arranged close to the feeding end of the conveying belt 12, and the arc-shaped protruding surface of the arc-shaped plate 314 faces the feeding end of the conveying belt 12. The lower section of the connecting plate 313 away from the vertical plate 312 is processed in an arc shape, and the vertical plate 312, the two connecting plates 313 and the arc-shaped plate 314 form a glue outlet 315 in the shape of a strip and perpendicular to the conveying direction of the conveying belt 12 in the length direction. The four side walls of the pressing plate 32 are respectively fitted with the inner walls of the vertical plate 312, the two connecting plates 313 and the vertical section of the arc-shaped plate 314, so that the glue in the glue storage box 31 can be pressed out.

[0036] The upper section of the glue storage box 31 is located on the upper part of the top plate 22, and a glue injection opening 3121 is formed on the section of the vertical plate 312 located on the upper part of the top plate 22 and communicating with the inside of the glue storage box 31. When the pressing plate 32 is fitted with the inner plate surface of the cover plate 311, the glue injection opening 3121 is lower than the lower plate surface of the pressing plate 32. A strip-shaped observation window 3131 is vertically formed on the connecting plate 313, and a transparent plate (not shown in the figure) is fixedly installed in the observation window 3131. The transparent plate can be made of glass, acrylic plate or the like, which is beneficial for the staff to observe the remaining glue amount in the glue storage box 31 and to timely inject glue into the glue storage box 31 through the glue injection opening 3121.

[0037] With reference to Figure 3 The glue coating assembly 3 further comprises a fixed groove 34 fixedly arranged on the outer plate surface of the arc-shaped plate 314, a baffle 35 movably arranged in the fixed groove 34 and capable of opening and closing the glue outlet 315, and a driving mechanism 36 fixedly arranged on the outer wall of the arc-shaped plate 314 and above the fixed groove 34. The fixed groove 34 is arc-shaped and has the same curvature as the arc-shaped plate 314, and the groove opening of the fixed groove 34 and the outer wall of the arc-shaped plate 314 form a space for the movement of the baffle 35 and limit the baffle 35. The lower edge of the vertical plate 312 is lower than the lower edge of the arc-shaped plate 314, and the lower end of the fixed groove 34 is lower than the lower edge of the vertical plate 312, which can well close the glue outlet 315 and will not hinder the packaging box paper when passing through the lower end of the fixed groove 34, and is beneficial for the packaging box paper to pass through. The baffle 35 is made of the arc-shaped plate 314 or a thin plate with flexible deformation, and the baffle 35 is adapted to the inside of the fixed groove 34.

[0038] With reference toFigure 3 The driving mechanism 36 comprises a guide pipe 361 vertically arranged and fixed at the upper end face of the fixed groove 34, a connecting rod 362 movably arranged in the guide pipe 361 and fixed at the lower end of the baffle 35, a driving plate 363 hingedly connected at the upper end of the connecting rod 362, a rotating disc 364 hingedly connected at the upper end of the driving plate 363, and a driving motor 365 fixedly arranged on the outer wall of the vertical section of the arc-shaped plate 314, wherein the rotating disc 364 is coaxially arranged on the rotating shaft of the driving motor 365, and the driving plate 363 is eccentrically hinged to the rotating disc 364, so that the driving motor 365 can drive the baffle 35 to open and close the glue outlet 315 after rotating.

[0039] With reference to Figure 3 A distance measuring sensor 37 is fixedly arranged on the outer wall of the fixed groove 34, and the distance measuring sensor 37 is located at the lower end edge of the fixed groove 34 and is suspended above the conveying belt 12. The film coating device further comprises a PLC processor electrically connected to the distance measuring sensor 37, and the PLC processor is further electrically connected to the first electric push rod 33 and the driving motor 365 respectively. When the packaging box paperboard is conveyed on the conveying belt 12 to below the distance measuring sensor 37, the distance data measured by the distance measuring sensor 37 becomes smaller, so that a signal is sent to the PLC processor. After the PLC sensor obtains the signal that the distance becomes smaller, the first electric push rod 33 is controlled to press the glue downward, and the driving motor 365 is controlled to work and open the baffle 35, so that the glue is uniformly extruded from the glue outlet 315 to the packaging box paperboard. When the packaging box paperboard completely passes below the distance measuring sensor 37, the distance measuring value of the distance measuring sensor 37 returns to normal, and the first electric push rod 33 is controlled to stop pressing downward by the PLC sensor, and the driving motor 365 is controlled to work again and close the glue outlet 315 by the baffle 35, so that the gluing work for one packaging box paperboard is completed.

[0040] With reference to Figure 2 Two support seats 221 are fixedly arranged on the upper plate 22 in a symmetrical manner, and the connecting direction of the two support seats 221 is perpendicular to the length direction of the shell. An arc-shaped groove is formed on the top of the support seat 221, and the support seat 221 is located on the side of the glue storage box 31 away from the feeding end of the conveying belt 12 and is arranged in a spaced manner with the glue storage box 31. The two ends of the winding drum 4 are coaxially fixedly connected with fixed shafts, and the two fixed shafts can be placed in the two arc-shaped grooves at the same time, so as to facilitate the placement of the winding drum 4 with the film. A film coating motor 41 for driving the winding drum 4 is installed on the upper plate 22, and a strip-shaped hole is formed on the upper plate 22 for the film to enter the inside of the installation shell 2, and the edge of the strip-shaped hole is polished to be a smooth surface.

[0041] With reference to Figure 2The flattening assembly 5 is arranged on the side of the winding drum 4 away from the glue storage box 31 and is spaced apart from the winding drum 4. The flattening assembly 5 comprises a second electric push rod 51 arranged vertically and having an upper end fixed to the inner wall of the top plate 22, a connecting frame 52 fixed to the lower end of the second electric push rod 51, a flattening roller 53 rotatably arranged on the connecting frame 52, and a flattening motor 54 fixed to the connecting frame 52 and used to drive the flattening roller 53. After the film is coated on the packaging box paper, the coated packaging box paper is flattened by the flattening roller 53. The height of the flattening roller 53 can be controlled by the second electric push rod 51, so that the packaging box paper of different thicknesses can be adaptively flattened.

[0042] With reference to Figure 2 The cutting assembly 6 comprises a third electric push rod 61 arranged vertically and having an upper end fixed to the inner wall of the top plate 22, and a cutter 62 fixed to the lower end of the third electric push rod 61. The length direction of the cutter 62 is perpendicular to the conveying direction of the conveying belt 12. When the continuous and coated packaging box paper passes below the cutter 62, the cutter 62 cuts the edge of the packaging box paper, so that the coated packaging box paper is cut off.

[0043] The specific embodiment is only an explanation of the present application, and is not a limitation of the present application. Those skilled in the art can make modifications to the present embodiment without creative contribution after reading the present specification, as long as the modifications are within the scope of the claims of the present application and are protected by the patent law.

Claims

1. A printing and lamination apparatus for packaging boxes, characterized by: The application relates to a glue feeding device for a packaging box paperboard conveying device, which comprises a conveying assembly (1), a mounting shell (2) arranged on the conveying assembly (1), and a glue feeding assembly (3) arranged on the mounting shell (2), wherein the glue feeding assembly (3) comprises a glue storage box (31) fixed on the top of the mounting shell (2) and protruding from the top of the mounting shell (2), a pressing plate (32) arranged in the glue storage box (31), a first electric push rod (33) fixed on the top of the glue storage box (31) and penetrating into the glue storage box (31) and being fixed with the pressing plate (32), a fixed groove (34) fixed on one side of the glue storage box (31) close to the feeding end of the conveying assembly (1), a baffle (35) movably arranged between the fixed groove (34) and the glue storage box (31), and a driving mechanism (36) arranged on the outer wall of the glue storage box (31), wherein the lower part of the glue storage box (31) close to the feeding end of the conveying assembly (1) is arranged as an arc-shaped outer wall, the fixed groove (34) and the baffle (35) are both machined with an arc corresponding to the arc-shaped outer wall of the glue storage box (31), and a glue outlet (315) is arranged on the bottom of the glue storage box (31), when the packaging box paperboard is conveyed to the position below the glue outlet (315) by the conveying assembly (1), the driving mechanism (36) can drive the baffle (35) to open the glue outlet (315) and the first electric push rod (33) pushes the pressing plate (32) to feed glue, and when the packaging box paperboard completely passes through the glue outlet (315), the driving mechanism (36) drives the baffle (35) to close the glue outlet (315) and the first electric push rod (33) stops feeding glue.

2. The apparatus according to claim 1, wherein: The driving mechanism comprises a driving motor (365) fixedly arranged on the outer wall of the glue storage box (31), a rotating disc (364) rotatably arranged on the rotating shaft of the driving motor (365), a driving plate (363) eccentrically arranged at the upper end of the rotating disc (364) and rotatably connected with the rotating disc (364), a connecting rod (362) rotatably connected with the lower end of the driving plate (363), a guide pipe (361) sleeved on the connecting rod (362) and fixedly arranged on the fixed groove (34), and a distance measuring sensor (37) fixedly arranged on the outer wall of the fixed groove (34) close to the glue outlet (315), wherein the distance measuring sensor (37) is electrically connected with a PLC processor, the PLC processor is electrically connected with the driving motor (365) and the first electric push rod (33), and the lower end of the connecting rod (362) penetrates through the guide pipe (361) and is fixed with the baffle (35).

3. The apparatus according to claim 1, wherein: The mounting shell (2) is rotatably arranged with a winding drum (4) on the top thereof away from the feeding end of the conveying assembly (1), and a strip-shaped hole is arranged on the top of the mounting shell (2) for the film to enter the inside of the mounting shell (2).

4. The apparatus according to claim 3, wherein: A flattening assembly (5) is mounted on the inner top of the mounting shell (2) and located on the side of the winding drum (4) away from the glue storage box (31), the flattening assembly (5) comprises a second electric push rod (51) vertically arranged on the inner top of the mounting shell (2), a connecting frame (52) fixed on the lower end of the second electric push rod (51), a compression roller (53) rotatably arranged on the connecting frame (52), and a flattening motor (54) mounted on the connecting frame (52) for driving the compression roller (53), and the compression roller (53) is arranged in a spaced manner with the conveying plane of the conveying assembly (1).

5. The apparatus according to claim 4, wherein: A cutting assembly (6) is mounted on the inner top of the mounting shell (2) and located on the side of the flattening assembly (5) away from the winding drum (4), the cutting assembly (6) comprises a third electric push rod (61) fixed on the inner top of the mounting shell (2) and a cutting knife (62) fixed on the lower end of the third electric push rod (61).

6. The apparatus according to any one of claims 1-5, wherein: The conveying assembly (1) comprises two fixed plates (11), a conveying belt (12) rotatably arranged between the two fixed plates (11), support legs (13) fixed on the two fixed plates (11), and a conveying motor (14) fixed on the fixed plate (11) for driving the conveying belt (12).

7. The apparatus according to claim 6, wherein: The mounting shell (2) comprises two side plates (21) fixed on the two fixed plates (11) respectively, a top plate (22) horizontally connected on the top of the two side plates (21), and a reinforcing plate (23) fixed between the top plate (22) and the side plate (21) and in the shape of a right triangle.

8. The apparatus according to claim 1, wherein: The side wall of the glue storage box (31) protruding from the top of the mounting shell (2) and away from the feeding end of the conveying assembly (1) is provided with a glue injection opening (3121), and when the pressing plate (32) is attached to the inner top of the glue storage box (31), the pressing plate (32) is higher than the upper edge of the glue injection opening (3121).

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