Carton gluing machine, small carton production line and method for producing small cartons using the production line

Abstract

The present invention discloses a carton gluing machine, a small carton production line and a method for producing small cartons using the production line. By arranging an acceleration transmission assembly mainly composed of transmission rollers, synchronous belts and a driving mechanism on the carton gluing machine and behind the bending assembly, and the speed of the acceleration transmission assembly is greater than that of the uniform transmission assembly, so that when the small carton enters the acceleration transmission assembly, it is accelerated, and the distance from the small carton placed on the uniform transmission assembly is increased, ensuring accurate counting of cardboard; the cardboard before the acceleration transmission assembly can be produced together. By adding a cutter for dividing the cardboard at the die-cutting machine, the larger cardboard is divided into the required small cardboard. The patterns on the divided small cardboard have been printed before division. Therefore, it is only necessary to perform overprint positioning on the cardboard before division each time, and the small cardboard divided into more than two pieces is connected together at the printing place, improving the utilization rate of space and production efficiency without affecting the overprint accuracy of printing.

Description

Technical Field

[0001] The present invention relates to the field of carton production equipment, and particularly to a carton gluing machine, a small carton production line, and a method for producing small cartons using the production line. Background Art

[0002] In a carton production line, it is usually in the form of a sequential connection of a paper feeding device, a printing machine, a slotting machine, a die-cutting machine, a carton gluing machine, and a palletizing machine. The stacked cardboard is fed into the printing machine one by one by the paper feeding device, and the printing machine performs overprint registration on the cardboard and then prints. The printed cardboard is conveyed to the slotting machine, where the paper slots required for folding the cardboard into a carton are cut out and creases are pressed at the folding positions, and then conveyed to the die-cutting machine. The die-cutting machine cuts the shape of the cardboard, and the cutting positions include various shaped holes after the cardboard forms a carton and the cardboard shapes for snap-fastening at the sealing positions. Then, the carton gluing machine is used for gluing and folding to form a state where the cardboard is folded in half, and then conveyed to the palletizing machine for stacking and packing, and counting is performed when entering the palletizing machine.

[0003] In current carton production, the cardboard is conveyed at a constant speed in the carton gluing machine. To ensure accurate carton counting, when the paper feeding device feeds paper, a certain gap is left between adjacent two pieces of cardboard so that the counting sensor can identify individual cartons.

[0004] However, when producing small cartons, the cardboard required for small cartons is smaller. When the printing machine prints the cardboard, overprint registration is required, and the printing roller needs to rotate to the starting position to start printing. Therefore, the distance between the overprint points of adjacent two small pieces of cardboard needs to be equal to the distance between the overprint points of adjacent two large pieces of cardboard. It can be seen that the gap between adjacent two small pieces of cardboard is larger, resulting in space waste and low utilization rate. If the distance between the overprint points of adjacent two small pieces of cardboard is changed when the small cardboard enters the printing machine so that the gap between adjacent two small pieces of cardboard is equal, it will affect the overprint accuracy of the printing machine for the cardboard.

[0005] It can be seen that the existing technology still needs to be improved. Summary of the Invention

[0006] In view of the deficiencies of the above-mentioned existing technology, the purpose of the present invention is to provide a carton gluing machine, a small carton production line, and a method for producing small cartons using the production line, so as to improve the production efficiency and printing accuracy of small cartons.

[0007] To achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A carton gluing machine includes a frame and a uniform-speed conveying component. Above the uniform-speed conveying component, the frame is fixed with an adhesive applying component and a bending component, and the adhesive applying component is arranged in front of the bending component. It also includes an accelerating conveying component which is fixed on the frame and connected behind the bending component. The accelerating conveying component includes conveying rollers and a synchronous belt. There are two conveying rollers, and both ends of the synchronous belt are sleeved on the two conveying rollers. The two conveying rollers are rotatably connected to the frame. A driving mechanism is drivingly connected to one of the conveying rollers, and the driving mechanism is fixed on the frame.

[0009] In the carton gluing machine described above, it further includes a paper pressing component arranged above the accelerating conveying component. The paper pressing component includes two driving wheels rotatably connected to the frame and a synchronous belt sleeved on the two driving wheels. The lower end face of the synchronous belt is parallel to the upper end face of the synchronous belt.

[0010] In the carton gluing machine described above, the frame is also rotatably connected with paper pressing wheels. The paper pressing wheels are arranged between the two conveying rollers, and taking two paper pressing wheels as a group, the plane where the axes of the two paper pressing wheels in each group are located is perpendicular to the upper end face of the synchronous belt.

[0011] In the carton gluing machine described above, it further includes a left side plate and a right side plate. The frame is provided with linear guide rails, and the left side plate and the right side plate are slidably connected to the linear guide rails, and the accelerating conveying component, the paper pressing component and the paper pressing wheels are connected to the left side plate and the right side plate.

[0012] In the carton gluing machine described above, both the left side plate and the right side plate include an upper plate and a lower plate. The lower plate is connected to the linear guide rail. There are connecting pieces between the upper plate and the lower plate. The accelerating conveying component is connected to the lower plate, the paper pressing component is connected to the upper plate. Among the two paper pressing wheels in each group, one is connected to the lower plate and the other is connected to the upper plate.

[0013] In the carton gluing machine described above, the paper pressing wheels are conical.

[0014] In the carton gluing machine described above, the driving mechanism is a motor.

[0015] A small carton production line includes a paper feeding device, a printing machine, a slotting machine, a die-cutting machine, the carton gluing machine described above and a palletizing machine which are connected in sequence. Among them, the speed of the accelerating conveying component of the carton gluing machine is greater than the speed of the uniform-speed conveying component. A counting sensor is arranged between the palletizing machine and the accelerating conveying component. The counting sensor is fixed on the frame of the carton gluing machine and faces the carton outlet end of the accelerating conveying component.

[0016] In the small carton production line described above, two carton gluing machines are connected behind the die-cutting machine. The two carton gluing machines are arranged in parallel, and the number of palletizing machines is equal to the number of carton gluing machines.

[0017] A method for producing small cartons using the small carton production line described above includes the following steps:

[0018] a. The paper feeding device extracts a single piece of paperboard and sends it to the printing press;

[0019] b. The printing press performs overprint positioning on the cardboard and prints on the cardboard, and then transmits it to the slotting machine after printing;

[0020] c. The slotting machine cuts the paper slots and presses out the folding marks on the cardboard, and transmits it to the die-cutting machine;

[0021] d. The die-cutter cuts the cardboard into the required shape and synchronously transmits the resulting cardboard to the uniform speed transmission component of the box gluer;

[0022] e. The gluer conveys the cardboard obtained in step d to the palletizer, and the cardboard passes through the gluing component and the bending component in sequence while being conveyed at a uniform speed. The gluing component sprays glue on one end of the cardboard, and the bending component bends the cardboard so that the end of the cardboard sprayed with glue is attached to the other end to form a carton;

[0023] f. The counting sensor counts the cartons;

[0024] g. Palletizer stacks and packs cartons;

[0025] In step d, the die-cutting machine cuts the cardboard into the required shape and divides the cardboard into two or more small cardboards, and the two or more small cardboards are transmitted synchronously;

[0026] In step e, when the small cardboard passes through the accelerating conveying component of the box gluer, a gap is opened between two adjacent small cartons due to the speed difference between the accelerating conveying component and the uniform conveying component.

[0027] Beneficial effects: by arranging an accelerating conveying assembly mainly composed of a conveying roller, a synchronous belt and a driving mechanism on the box gluing machine, the accelerating conveying assembly is fixed on the frame and connected to the rear of the bending assembly, and the speed of the accelerating conveying assembly is greater than the speed of the uniform conveying assembly, so that the small carton is accelerated when entering the accelerating conveying assembly, and can be quickly pulled away from the small carton placed on the uniform conveying assembly, so that the counting sensor can identify a single small carton, and ensure the accurate counting of the cardboard; therefore, the cardboards before the accelerating conveying assembly can be connected together for production, and then, by adding a tool for dividing the cardboard at the die-cutting machine, the larger cardboard can be divided into the required small cardboards, and the patterns on the divided small cardboards have been printed before dividing, so at each time of overprint positioning, the cardboard before division can be overprinted and positioned, and the small cardboards divided into two or more pieces are connected together at the printing position, which improves the utilization rate of space, improves production efficiency, and does not affect the printing overprint accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural diagram of a small carton production line.

[0029] Figure 2 It is a schematic structural diagram of a carton gluing machine, and the arrow indicates the direction of cardboard conveyance.

[0030] Figure 3 It is a schematic structural diagram of an acceleration unit.

[0031] Description of main component symbols: 1 - paper feeding device, 2 - printing machine, 3 - slotting machine, 4 - die-cutting machine, 5 - carton gluing machine, 6 - palletizing machine, 7 - counting sensor, 5.1 - frame, 5.2 - uniform conveying assembly, 5.3 - gluing assembly, 5.4 - bending assembly, 5.5 - acceleration conveying assembly, 5.51 - conveying roller, 5.52 - synchronous belt, 5.53 - driving mechanism, 5.54 - reducer, 5.6 - paper pressing assembly, 5.61 - transmission wheel, 5.62 - synchronous belt, 5.7 - paper pressing wheel, 5.8 - side plate, 5.81 - upper plate, 5.82 - lower plate, 5.83 - connecting piece, 5.9 - linear guide rail. Specific implementation manners

[0032] The present invention provides a carton gluing machine, a small carton production line, and a method for producing small cartons using the production line. To make the objectives, technical solutions, and effects of the present invention clearer and more definite, the following further describes the present invention in detail with reference to the accompanying drawings and by way of examples. It should be understood that the specific examples described herein are only used to explain the present invention and are not used to limit the protection scope of the present invention.

[0033] Please refer to Figure 2 and Figure 3 , a carton gluing machine includes a frame 5.1 and a uniform conveying assembly 5.2. The uniform conveying assembly 5.2 is mainly composed of a synchronous belt and synchronous belt wheels connected to both ends of the synchronous belt. The synchronous belt wheels are rotatably connected to the frame 5.1, and at least one of the synchronous belt wheels is connected to a driving motor, so that the motor drives the synchronous belt to move through the synchronous belt wheels, and the cardboard is conveyed in the carton gluing machine 5. In practical applications, for the stability of the cardboard during conveyance, multiple groups of the uniform conveying assembly 5.2 can be provided. The synchronous belt wheels corresponding to the multiple groups of the uniform conveying assembly 5.2 can be fixed on the same rotating shaft and connected to the motor through the rotating shaft. The multiple groups of the uniform conveying assembly 5.2 are distributed below the position where the cardboard passes. In this application, the uniform conveying assembly 5.2 is preferably two groups.

[0034] Above the uniform conveying component 5.2 of the machine frame 5.1, there are fixed an adhesive applying component 5.3 and a bending component 5.4. And the adhesive applying component 5.3 is arranged in front of the bending component 5.4. Here, the front refers to the front in the conveying direction of the cardboard. The adhesive applying component 5.3 is used to spray glue on the position where the cardboard needs to be stuck together after bending. After the adhesive applying component 5.3 applies glue to the cardboard, it enters the bending component 5.4. Under the restriction of the folding soft rod and / or folding belt of the bending component 5.4 and combined with the conveying of the uniform conveying component 5.2, the cardboard is folded in half. And the end of the cardboard sprayed with glue is attached to the other end of the cardboard and is firmly glued by the glue.

[0035] As an improvement of this application, the carton gluing machine 5 further includes an accelerating conveying component 5.5. The accelerating conveying component 5.5 is fixed on the machine frame 5.1 and is connected behind the bending component 5.4. Here, the rear refers to the rear in the conveying direction of the cardboard. The accelerating conveying component 5.5 includes conveying rollers 5.51 and a synchronous belt 5.52. There are two conveying rollers 5.51, and both ends of the synchronous belt 5.52 are sleeved on the two conveying rollers 5.51. The two conveying rollers 5.51 are rotatably connected to the machine frame 5.1. A driving mechanism 5.53 is drivingly connected to one of the conveying rollers 5.51. The driving mechanism 5.53 is fixed on the machine frame 5.1.

[0036] Specifically, the upper end surface of the synchronous belt 5.52 is flush with the upper end surface of the synchronous belt, so that the cardboard can be smoothly conveyed from the synchronous belt 5.62 to the synchronous belt 5.52. The driving of the driving mechanism 5.53 makes the conveying roller 5.51 connected to it rotate, so that the conveying roller 5.51 drives the synchronous belt 5.52 to move, realizing the conveying of the cardboard. In practical applications, there can be multiple synchronous belts 5.52, and multiple synchronous belts 5.52 are all sleeved on the two conveying rollers 5.51.

[0037] In the described carton gluing machine, there are also a left side plate and a right side plate (the left side plate and the right side plate are called side plates 5.8). There is a linear guide rail 5.9 on the machine frame. The left side plate and the right side plate are slidably connected to the linear guide rail 5.9. That is, both ends of the slide rail of the linear guide rail are fixed on the machine frame. The left side plate and the right side plate are fixed on the sliders of the linear guide rail, and a slider is respectively arranged corresponding to the left side plate and the right side plate, so that the left side plate and / or the right side plate can be pushed. Among them, the accelerating conveying component 5.5, the paper pressing component 5.6 and the paper pressing wheel 5.7 are connected to the left side plate and the right side plate, and the distance between the left side plate and the right side plate is adjusted to be suitable for cartons of different widths.

[0038] In a preferred embodiment, both the left side plate and the right side plate include an upper plate 5.81 and a lower plate 5.82. The lower plate is connected to the linear guide rail. A connecting member 5.10 is provided between the upper plate and the lower plate. The acceleration transmission assembly is connected to the lower plate, and the paper pressing assembly is connected to the upper plate. Among the two paper pressing wheels in each group, one is connected to the lower plate and the other is connected to the upper plate. By dividing both the left side plate and the right side plate into two parts, namely the upper plate and the lower plate, and connecting the two parts of the upper plate and the lower plate through a connecting member, the connecting member can be a turbo screw lifting structure or a cylinder, so that the distance between the upper plate and the lower plate can be adjusted, and the distance between the acceleration transmission assembly and the paper pressing assembly can be adjusted, making it suitable for cartons of different thicknesses.

[0039] In practical applications, the connecting member can also be a screw rod structure or a plate. Different height screw holes are provided on the upper plate and the lower plate, and the plate is matched with the screw holes of different heights through screws to realize the adjustment of the distance between the upper plate and the lower plate.

[0040] In a preferred embodiment, the conveying roller 5.51, the left side plate and the right side plate can all be slidably connected to a rotating shaft, and the rotating shaft can only slide relative to the conveying roller 5.51. Both ends of the rotating shaft are rotatably connected to the bracket. In this way, the driving mechanism 5.53 for driving the rotation of the conveying roller 5.51 can be fixed to the bracket, and the conveying rollers 5.51 on the left side plate and the right side plate can be driven simultaneously by one driving mechanism 5.53 without affecting the adjustment of the distance between the left side plate and the right side plate.

[0041] In a preferred embodiment, a paper pressing assembly 5.6 is further included above the acceleration transmission assembly 5.5. The paper pressing assembly 5.6 includes two transmission wheels 5.61 rotatably connected to the frame 5.1 and a synchronous belt 5.62 sleeved on the two transmission wheels 5.61. The lower end surface of the synchronous belt 5.62 is parallel to the upper end surface of the synchronous belt 5.52. When the folded small carton is conveyed on the synchronous belt 5.52 of the acceleration transmission assembly 5.5, the synchronous belt 5.62 presses the small carton above it to prevent the folded carton from opening under the action of its own restoring force before the glue has time to solidify, causing the bonding part at both ends of the cardboard to separate. Therefore, by setting the paper pressing assembly 5.6, it is ensured that both ends of the cardboard can be firmly bonded together, ensuring the quality of the carton.

[0042] Among them, the transmission wheel 5.61 may not be provided with a power mechanism for driving its rotation. When the acceleration transmission assembly 5.5 drives the carton to move, the carton can drive the paper pressing assembly 5.6 to rotate.

[0043] In practical applications, the paper pressing assembly 5.6 can be provided with a power mechanism to drive the paper pressing assembly 5.6 to rotate synchronously with the accelerating conveying assembly 5.5 and at the same speed. The power mechanism can be an independently provided motor, or can be connected to the driving mechanism 5.53 of the accelerating conveying assembly 5.5 through a transmission structure.

[0044] Specifically, the paper pressing components 5.6 are divided into two groups, which are respectively placed on both sides along the conveying direction after the paperboard is folded to form a carton.

[0045] The frame 5.1 is also rotatably connected with a paper pressing wheel 5.7, which is arranged between two conveying rollers 5.51, and two paper pressing wheels 5.7 form a group, and the plane where the axes of the two paper pressing wheels 5.7 of each group are located is perpendicular to the upper end surface of the synchronous belt 5.52. That is, in use, when the carton is being conveyed, it passes between the two paper pressing wheels 5.7 of each group, and the two paper pressing wheels 5.7 are used to apply a large pressure to the folding position of the cardboard, thereby eliminating the restoring force of the cardboard at the folding position after it is folded into the carton, and preventing the carton from being pulled apart by the restoring force at the bonding position. In actual application, the paper pressing wheels 5.7 are arranged on both sides along the conveying direction of the carton, and at least one group of paper pressing wheels 5.7 is arranged on each side, and the specific number can be set as needed.

[0046] Preferably, the paper pressing wheel 5.7 is cone-shaped. After the two paper pressing wheels 5.7 cooperate, a "V" shape is formed at the gap. The folding position of the carton is placed at the "V"-shaped gap, which can avoid large indentations that affect the quality of the carton.

[0047] In the above, side panels can be provided on both sides of the accelerating transmission component 5.5 and fixed on the frame 5.1 through the side edges, and the paper pressing component 5.6 and the paper pressing wheel 5.7 are also connected to the side panels, so that the accelerating transmission component 5.5, the paper pressing component 5.6, the paper pressing wheel 5.7 and the side panels form an independent accelerating unit. When assembling the existing box gluer 5, it is convenient to modify the existing box gluer 5 which only has the uniform speed transmission component 5.2, the gluing component 5.3 and the bending component 5.4, and the accelerating unit can be directly fixed on the frame 5.1.

[0048] Reference Figure 1 and Figure 2A small carton production line includes a paper feeding device 1, a printing machine 2, a slotting machine 3, a die-cutting machine 4, a gluer 5 and a palletizer 6 connected in sequence, wherein the gluer 5 is the above-mentioned gluer 5 having an acceleration unit composed of an acceleration transmission component 5.5, a paper pressing component 5.6, a paper pressing wheel 5.7 and a side plate, the speed of the acceleration transmission component 5.5 of the gluer 5 is greater than the speed of the uniform transmission component 5.2, and a counting sensor 7 is provided between the palletizer 6 and the acceleration transmission component 5.5, and the counting sensor 7 is fixed on the frame 5.1 of the gluer 5 and faces the carton outlet end of the acceleration transmission component 5.5. The counting sensor 7 can be a photoelectric sensor.

[0049] Among them, the cutters of the slotting machine 3 and the die-cutting machine 4 can be set according to the actual needs of the cardboard, so that the cardboard can be cut by the slotting machine 3 to form the paper slots and press out the folding marks required for folding the small cardboard into a small carton, and the die-cutting machine 4 can press the cardboard into the required shape for folding into a carton, and can simultaneously divide the cardboard horizontally into more than two small cardboards, and each small cardboard forms a small carton after folding.

[0050] The working principle of the production line is as follows: the paper feeding device 1 conveys the cardboard to the printing machine 2 for overprint positioning and printing. The printed cardboard enters the slotting machine 3 to cut out the paper slots and folding marks required for the small cardboard to be folded into small cartons, and then is transmitted to the die-cutting machine 4; the die-cutting machine 4 can press the cardboard into the required shape for folding into cartons, and can also divide the cardboard horizontally into more than two small cardboards at the same time; the small cardboards obtained by the division are synchronously transmitted to the box gluing machine 5. Since the small cardboards obtained by the division are synchronously transmitted, the small cardboards are still closely arranged together; entering the box gluing machine The small cardboard of 5 is conveyed forward on the uniform speed conveying component 5.2, and passes through the gluing component 5.3 and the bending component 5.4 in sequence to realize folding of the cardboard to form a small carton; then, the small carton enters the accelerating conveying component 5.5. Since the speed of the accelerating conveying component 5.5 is greater than the speed of the uniform speed conveying component 5.2, the small carton is accelerated when entering the accelerating conveying component 5.5, and can quickly pull away from the small carton still on the uniform speed conveying component 5.2, so that the counting sensor 7 can identify a single small carton; finally, the small carton is stacked and packed on the palletizer 6.

[0051] In the above, the paper feeding device 1, the printing machine 2, the slotting machine 3, the die-cutting machine 4 and the palletizing machine 6 are all existing equipment for carton production.

[0052] Since the printing rollers of the existing printing machine 2 are set according to the specifications of the cardboard, for each cardboard printed, the printing roller rotates one circle and just returns to the starting point of overprint registration. Therefore, if the conveyed cardboard is changed to small cardboard, the distance between the overprint points of two adjacent small cardboards needs to be equal to the distance between the overprint points of two adjacent large cardboards. It can be seen that the gap between two adjacent small cardboards is relatively large, resulting in space waste and low utilization rate. If the distance between the overprint points of two adjacent small cardboards is changed when the small cardboard enters the printing machine 2, so that the gaps between two adjacent small cardboards are equal, it will affect the overprint accuracy of the printing machine 2 for the cardboard.

[0053] In the above, by adding a tool for dividing the cardboard at the die-cutting machine 4 and setting an acceleration conveying component 5.5 at the rear end of the case gluing machine 5 to accelerate the divided cardboard, the distance between two adjacent small cartons is widened without affecting the counting. And the patterns on the divided small cardboard have been printed before the division. Therefore, during each overprint registration, it is only necessary to perform overprint registration on the cardboard before division. Moreover, the small cardboard divided into more than two pieces is connected together at the printing place, improving the space utilization rate and production efficiency.

[0054] Of course, the above small carton production line can also be used for ordinary carton production. During ordinary carton production, the speed of the acceleration conveying component 5.5 can be equal to or greater than the speed of the uniform conveying component 5.2.

[0055] A method for producing small cartons using the described small carton production line includes the following steps:

[0056] a. The paper feeding device 1 extracts a single piece of cardboard and conveys it to the printing machine 2. At the start of production, the cardboard cut according to the cardboard specifications is placed on the paper feeding device 1, and the paper feeding device 1 extracts a single piece of cardboard for conveyance each time. There is a certain gap between two adjacent pieces of cardboard, so that after the printing machine 2 finishes printing the previous piece of cardboard, there is enough time to perform overprint registration on the next piece of cardboard and then perform printing.

[0057] b. The printing machine 2 prints the cardboard and conveys it to the slotting machine 3. Before printing in this step, it is necessary to perform overprint registration on the cardboard so that the printed pattern is accurately printed on the cardboard, avoiding pattern deviation and affecting the quality.

[0058] c. The slotting machine 3 cuts paper slots and presses out folding marks on the cardboard and conveys it to the die-cutting machine 4. Among them, cutting the paper slots means cutting off certain positions of the cardboard, and pressing out the folding marks means pressing out marks at the positions where the cardboard needs to be bent when folded into a carton, so that the cardboard softens at the crease and is convenient for the subsequent folding process to fold it.

[0059] d. The die-cutting machine 4 cuts out the required shape from the cardboard and synchronously conveys the obtained cardboard to the uniform conveying component 5.2 of the box gluing machine 5. The die-cutting machine 4 cuts the shape of the cardboard, and the cutting positions include various shaped holes formed in the cardboard after forming the carton and the cardboard shape for the snap connection at the sealing position. Then, the box gluing machine 5 applies glue and folds the cardboard. In this step d, when the die-cutting machine 4 cuts out the required shape from the cardboard, the cardboard is simultaneously divided into two or more small cardboard pieces, and the two or more small cardboard pieces are synchronously conveyed into the box gluing machine 5.

[0060] In the above, it is preferably to divide the cardboard horizontally, that is, to cut along the length direction of the cardboard. The length direction refers to the length of the cardboard along the conveying direction, and its width remains unchanged, so that the cardboard can all enter the box gluing machine 5. The above-mentioned horizontal division, for example, divides the cardboard with a specification of 1200mm x 2400mm into two cardboard pieces with a specification of 600mm x 2400mm; of course, in actual applications, according to needs, the cardboard with a specification of 1200mm x 2400mm can also be divided into three cardboard pieces with a specification of 400mm x 2400mm, or divided into four cardboard pieces with a specification of 300mm x 2400mm, and the specific specifications of the small cardboard pieces are determined according to actual needs.

[0061] In a preferred embodiment, two of the box gluing machines 5 are connected behind the die-cutting machine 4, and the two box gluing machines 5 are arranged in parallel, and the number of palletizing machines 6 is equal to that of the box gluing machines 5. When it is necessary to divide the cardboard in the width direction, for example, to divide the cardboard with a specification of 1200mm x 2400mm into two cardboard pieces with a specification of 1200mm x 1200mm; then two corresponding box gluing machines 5 can be connected to the die-cutting machine 4, and the two cardboard pieces after longitudinal division are respectively conveyed into the two box gluing machines 5. In this embodiment, the die-cutting machine 4 can also simultaneously divide the cardboard horizontally and longitudinally. For example, the cardboard with a specification of 1200mm x 2400mm is divided into four small cardboard pieces with a specification of 600mm x 1200mm.

[0062] In the above, by dividing the cardboard, different specifications of cartons can be formed, increasing the adaptability of the production line, and when producing small cardboard pieces, the production efficiency can be improved.

[0063] e. The box gluing machine 5 conveys the cardboard obtained in step d to the palletizing machine 6, and when the cardboard is on the uniform conveying component 5.2, it sequentially passes through the glue applying component 5.3 and the bending component 5.4. The glue applying component 5.3 sprays glue on one end of the cardboard, and the bending component 5.4 bends the cardboard so that the end of the cardboard sprayed with glue fits with the other end to form a carton. In this step e, when the small cardboard passes through the acceleration conveying component 5.5 of the box gluing machine 5, under the action of the speed difference between the acceleration conveying component 5.5 and the uniform conveying component 5.2, a gap is opened between two adjacent small cartons.

[0064] f. The counting sensor 7 counts the cartons. The counting sensor 7 is preferably a photoelectric sensor. When the counting sensor 7 is blocked by the cardboard, the number of cartons is increased by one. Since the gap between two adjacent cartons in the gluer 5 is opened by the accelerating transmission component 5.5, the accurate counting of the cardboard is ensured. However, the existing gluer 5 does not have the accelerating transmission component 5.5. If two adjacent cartons are connected together, the counting sensor 7 will have a counting error. The present application solves the problem of counting errors by designing the accelerating transmission component 5.5.

[0065] g. Palletizer 6 stacks and packs cartons.

[0066] In the present invention, an accelerating conveying assembly 5.5 mainly composed of a conveying roller 5.51, a synchronous belt 5.52 and a driving mechanism 5.53 is arranged on the box gluing machine 5, the accelerating conveying assembly 5.5 is fixed on the frame 5.1 and connected to the rear of the bending assembly 5.4, and the speed of the accelerating conveying assembly 5.5 is greater than the speed of the uniform conveying assembly 5.2, so that the small carton is accelerated when entering the accelerating conveying assembly 5.5, and can be quickly separated from the small carton placed on the uniform conveying assembly 5.2, so that the counting sensor 7 can identify a single small carton, and ensure the accurate counting of the cardboard; therefore, the cardboards before the accelerating conveying assembly 5.5 can be connected together for production, and then, by adding a cutter for dividing the cardboard at the die-cutting machine 4, the larger cardboard can be divided into the required small cardboards, and the patterns on the divided small cardboards have been printed before the division, so at each time of overprint positioning, the cardboard before the division can be overprinted and positioned, and the two or more small cardboards divided are connected together at the printing position, which improves the utilization rate of space, improves production efficiency, and does not affect the printing overprint accuracy.

[0067] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0068] In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, an electrical connection, or a connection that allows mutual communication; it may be a direct connection, or an indirect connection through an intermediate medium, and it may be the internal communication between two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] It can be understood that for those of ordinary skill in the art, equivalent substitutions or changes can be made according to the technical solutions and inventive concepts of the present invention, and all such changes or substitutions should fall within the protection scope of the present invention.

Claims

1. A carton gluing machine, comprising a frame and a uniform conveying assembly. Above the uniform conveying assembly, a glue applying assembly and a bending assembly are fixed to the frame, and the glue applying assembly is arranged in front of the bending assembly. It is characterized in that, It further includes an accelerating conveyor component which is fixed on the frame and connected behind the bending component. The accelerating conveyor component includes conveyor rollers and a synchronous belt. There are two conveyor rollers, and both ends of the synchronous belt are sleeved on the two conveyor rollers. The two conveyor rollers are rotatably connected to the frame. A driving mechanism is drivingly connected to one of the conveyor rollers, and the driving mechanism is fixed on the frame. It also includes a paper pressing component arranged above the accelerating conveyor component. The paper pressing component includes two driving wheels rotatably connected to the frame and a synchronous belt sleeved on the two driving wheels. The lower end surface of the synchronous belt is parallel to the upper end surface of the synchronous belt. A paper pressing wheel is also rotatably connected to the frame. The paper pressing wheel is arranged between the two conveyor rollers. And taking two paper pressing wheels as a group, the plane where the axes of the two paper pressing wheels in each group are located is perpendicular to the upper end surface of the synchronous belt. The paper pressing wheel is conical. After the two paper pressing wheels cooperate, a "V" shape is formed at the gap, and the folding position of the carton is placed at the "V" - shaped gap. It further includes a left side plate and a right side plate. Linear guides are arranged on the frame. The left side plate and the right side plate are slidably connected to the linear guides. The two ends of the slide rail of the linear guide are fixed on the frame. The left side plate and the right side plate are fixed on the sliders of the linear guide. And a slider is respectively provided for the left side plate and the right side plate, so that the left side plate and / or the right side plate can be pushed. And the accelerating conveyor component, the paper pressing component and the paper pressing wheel are connected to the left side plate and the right side plate. The conveyor rollers and the left side plate and the right side plate are all slidably connected to a rotating shaft. And only sliding is allowed between the rotating shaft and the conveyor rollers. The two ends of the rotating shaft are rotatably connected to the frame. The left side plate and the right side plate both include an upper plate and a lower plate. The lower plate is connected to the linear guide. A connecting piece is arranged between the upper plate and the lower plate. The connecting piece is used to adjust the distance between the upper plate and the lower plate. The accelerating conveyor component is connected to the lower plate. The paper pressing component is connected to the upper plate. Among the two paper pressing wheels in each group, one is connected to the lower plate and the other is connected to the upper plate.

2. The carton gluing machine according to claim 1, wherein The driving mechanism is a motor.

3. A small cardboard box production line, characterized in that, It includes a paper feeding device, a printing machine, a slotting machine, a die - cutting machine, a carton gluing machine as described in claim 1, and a palletizing machine which are connected in sequence. Among them, the speed of the accelerating conveyor component of the carton gluing machine is greater than that of the uniform - speed conveyor component. A counting sensor is arranged between the palletizing machine and the accelerating conveyor component. The counting sensor is fixed on the frame of the carton gluing machine and faces the carton - discharging end of the accelerating conveyor component.

4. The small carton production line according to claim 3, wherein, Two such carton gluing machines are connected behind the die - cutting machine. The two carton gluing machines are arranged in parallel. The number of palletizing machines is equal to that of the carton gluing machines.

5. A method for producing small cartons using the small - carton production line as described in claim 3 or 4, including the following steps: a. The paper feeding device extracts a single cardboard and conveys it to the printing machine; b. The printing machine performs overprint registration on the cardboard and prints the cardboard, and then conveys it to the slotting machine after printing; c. The slotting machine cuts paper slots and presses out folding marks on the cardboard and conveys it to the die - cutting machine; d. The die - cutting machine cuts out the required shape from the cardboard and synchronously conveys the obtained cardboard to the uniform - speed conveyor component of the carton gluing machine; e. The carton gluing machine conveys the cardboard obtained in step d to the palletizing machine. When the cardboard passes through the uniform-speed conveying component, it successively passes through the gluing component and the bending component. The gluing component sprays glue on one end of the cardboard, and the bending component bends the cardboard so that the end of the cardboard sprayed with glue fits with the other end to form a carton. f. The counting sensor counts the cartons. g. The palletizing machine stacks and packs the cartons. It is characterized in that In step d, the die-cutting machine cuts out the required shape from the cardboard, divides the cardboard into two or more small cardboard pieces, and synchronously conveys the two or more small cardboard pieces. In step e, when the small cardboard passes through the acceleration conveying component of the carton gluing machine, under the action of the speed difference between the acceleration conveying component and the uniform-speed conveying component, a gap is formed between two adjacent small cartons.

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