Full-automatic traceless heaven and earth cover box forming machine

Abstract

The utility model relates to the field of box body processing equipment, and discloses a full-automatic traceless heaven and earth cover box forming machine, which comprises a paper feeding device, a transverse edge folding device, a connecting steering device, a heaven and earth cover forming device, a gluing mechanism and a paper board conveying device, the heaven and earth cover forming device comprises a vertical forming channel and a forming pressing die, the left side and the right side of the vertical forming channel are provided with guiding pieces allowing the left side face and the right side face of a folded paperboard to vertically enter the vertical forming channel, and the front side and the rear side of the vertical forming channel are provided with side baffles used for erecting supporting plates on the front side and the rear side of the paperboard correspondingly. A brand new box forming mode is adopted, a paperboard only needs to be mounted and clamped in advance, full-automatic machining forming from the paperboard to the heaven and earth cover box is achieved, and rapid, accurate, efficient and automatic completion of the heaven and earth cover box is achieved.

Description

Technical Field

[0001] The utility model relates to the field of box body processing equipment, in particular to a fully automatic seamless lid and bottom box forming machine. Background Art

[0002] In the process of forming traditional lid and bottom boxes, especially lid and bottom paper boxes, it is usually necessary to form an inner grey board box by means of splicing or other methods, and then place the face paper under the grey board box for lamination. In the production method of the existing technology lid and bottom boxes, the grey board and the face paper are die-cut. The grey board first undergoes grooving, folding and corner pasting to form a blank box, and then the blank box and the face paper are respectively conveyed. At the same time, a large area of glue is sprayed on the face paper, and then the face paper is wrapped on the outside of the blank box. The face paper and the blank box are laminated by positioning in a box pressing device, and then go through multiple processes of vertical side pressing, ear folding and bubble pressing. In the traditional production process flow, the die-cut grey board must be formed by pasting corners manually or by semi-automatic auxiliary equipment, otherwise the subsequent process production cannot be carried out. Therefore, enterprises need to form the corners of the grey board in advance. This practice results in low production efficiency. The four corners are pasted, which does not meet the current global environmental trend of restricting the use of plastics. And it is very difficult to pick out the transparent tape during the recycling process of waste packaging boxes, resulting in an increase in the social recycling cost. At the same time, since the corner pasting of the blank box is carried out locally rather than the whole blank box, there are height differences, and tape marks can be faintly seen on the four side edges of the lid and bottom box after forming, which affects the aesthetics of the gift box packaging.

[0003] For example, in the Chinese invention patent with the publication number CN214294679U and the name "An Automatic Forming Equipment for Lid and Bottom Boxes", it discloses another forming method for lid and bottom boxes. As described in paragraphs 30-33 of its specification, "The automatic forming equipment for lid and bottom boxes includes a cardboard conveying device and a slide rail arranged above the cardboard conveying device. A plurality of rotating arms are slidably arranged on the slide rail. An absorbing and pressing die device for sucking cardboard and forming the cardboard is arranged on the rotating arms. By moving the rotating arms on the slide rail and performing arbitrary angle, position and height movement to control the movement of the absorbing and pressing die device, and then the absorbing and pressing die device sucks the cardboard and folds the cardboard into a box blank." This method requires additional positioning of the corner parts for the absorbing and pressing film device. Adding a negative pressure device will increase the production cost and operation cost of the equipment. Although it solves the problem of manual corner pasting, its production efficiency will also be relatively slow.

[0004] Therefore, a lid and bottom forming machine is needed, which can directly process cardboard into lid and bottom boxes without going through the step of forming a blank box, thereby saving labor, improving processing efficiency, and ensuring the strength of the formed box body. Summary of the Utility Model

[0005] The utility model aims at the disadvantages in the prior art and provides a fully automatic seamless box cover forming machine for the heaven and earth lid box.

[0006] To solve the above technical problems, the utility model is solved by the following technical solutions:

[0007] A fully automatic seamless box cover forming machine for the heaven and earth lid box includes a paper feeding device for outputting a paperboard with a grey board layer and a face paper layer laminated, a lateral folding device, a connecting and turning device, and a box cover forming device for the heaven and earth lid box. It further includes a gluing mechanism and a paperboard conveying device. The gluing mechanism is arranged on the paperboard conveying path. The lateral folding device is used for folding the folding plates on the left and right of the paperboard and the side support plates in half to form side plates.

[0008] The paperboard conveying device includes a lateral conveying mechanism and a longitudinal conveying mechanism at the connecting and turning device. The inlet end of the lateral conveying mechanism is connected and conveyed with the lateral folding device, and the outlet end of the longitudinal conveying mechanism is connected and conveyed with the box cover forming device for the heaven and earth lid box.

[0009] Preferably, the box cover forming device for the heaven and earth lid box includes a vertical forming channel. Above the vertical forming channel, there is a forming die which can move up and down to press the paperboard into the vertical forming channel for forming. On the left and right sides of the vertical forming channel, there are guiding members for the left and right side surfaces of the folded paperboard to stand upright and enter the vertical forming channel. On the front and rear sides of the vertical forming channel, there are side baffles for erecting the front and rear side support plates of the paperboard respectively. On the front and rear sides of the vertical forming channel, there are also side folding plates respectively. The side folding plates are connected with a side folding power source which can drive them to move back and forth, and are used for folding the folding plates on the front and rear of the paperboard towards the inside of the side support plates. The horizontal position where the side folding plates are located is lower than the upper edge of the side baffles, and the top height of the guiding members is higher than the top of the side baffles. This can make the side folding of the box cover for the heaven and earth lid box have a sequence. The folded side plates first stand up together with the folding tongues on both sides, which is convenient for the subsequent front and rear side support plates to wrap outside the folding tongues for fixation and then wrap inward to form a limit. The side baffles have two functions. On the one hand, they guide the folding tongues to turn inward, and on the other hand, they guide the front and rear side support plates and side folding plates to stand upright.

[0010] Preferably, a deviation rectifying device is arranged between the paper feeding device and the lateral folding device. The deviation rectifying device includes a plurality of deviation rectifying wheels arranged along the paperboard conveying direction on the left and right sides, and deviation rectifying baffles for limiting the paperboard outside the deviation rectifying wheels. The lateral folding device includes a guiding and folding member which supports the folding plates of the paperboard and folds the folding plates inward by gradually forming a guide with an outer high and inner low along the conveying direction. The guiding and folding member is a guide rod or a belt, and the guiding and folding member is connected with an adjusting member for adjusting its left and right positions.

[0011] Preferably, the transverse conveying mechanism and the longitudinal conveying mechanism respectively have transverse connection stations and longitudinal connection stations that are staggered and not located at the same horizontal plane, and the connecting steering device includes a longitudinal blocker and a lifting suction cup, the longitudinal blocker is used to prevent the cardboard on the transverse connection station from continuing to be transported transversely, and the lifting suction cup can be lifted and lowered back and forth between the transverse connection station and the longitudinal connection station, and is used to suck the cardboard on the transverse connection station to the longitudinal connection station without horizontal deviation. This type of transfer can avoid the deviation that occurs when the cardboard falls from top to bottom, so that the box body molding accuracy is higher.

[0012] As a preferred embodiment, the connecting and steering device is also provided with a transverse limit baffle, which is used to limit the cardboard with the transverse folded edge on the transverse conveying mechanism; the higher one of the transverse conveying mechanism and the longitudinal conveying mechanism includes a conveying belt 1 on the left and right sides, a pressure wheel is arranged above the conveying belt 1, the transverse limit baffle can be moved horizontally left and right and is directly opposite to the top of the conveying belt 1, and the lifting suction cup is located between the conveying belt 1 on the left and right sides; the connecting and steering device includes a mounting frame on the left and right sides, a synchronous wheel is arranged on the mounting frame, a set of conveying belts is arranged on the synchronous wheel for conveying cardboard, the synchronous wheel is connected to a lateral moving force source, which is used to adjust the position of the left and right conveying belts 1, and is used to make way for the longitudinal lifting of the cardboard, and the lower one of the transverse conveying mechanism and the longitudinal conveying mechanism is a belt or chain conveyor. This method can also adapt to the processing of cardboards of different sizes, so as to form top and bottom lid boxes of different specifications. The higher one adopts the conveying of both sides to facilitate making way.

[0013] Preferably, the cardboard conveying device also includes a transverse conveying belt and a longitudinal conveying belt, both of which are provided with air nozzles connected to a negative pressure source. The transverse conveying belt is arranged on the inlet side of the transverse folding device, and the longitudinal conveying belt connects the longitudinal conveying mechanism with the top and bottom cover forming device.

[0014] Preferably, the gluing mechanism includes a first gluing device and a second gluing device, both of which include a gluing member, the first gluing device is provided on a glue roller in front of the gluing member, the first gluing device is provided above the transverse conveying belt, and the second gluing device is provided above the longitudinal conveying belt; the gluing mechanism also includes a third gluing device, the third gluing device is used to gluing the folded ear portion of the paperboard, and the third gluing device is also provided above the transverse conveying belt or the longitudinal conveying belt. Gluing the folded ear portion can increase the fixing strength of the box body, so that the formed box body is not easy to fall apart.

[0015] Preferably, the box cover forming device includes a manipulator for obtaining cardboard. A suction nozzle for adsorbing the cardboard is provided at the bottom of the manipulator, and the cardboard to be formed is conveyed to the entrance of the vertical forming channel. An ear folding plate is arranged above the guiding member. The ear folding plate is attached above the guiding member and its inner surface is located inside the inner surface of the guiding member. The upper ends of the guiding member and the ear folding plate both have an arc-shaped guiding surface that turns outwards from bottom to top. The upper surface of the side baffle is also an arc-shaped surface that turns outwards from bottom to top. The arc extension direction of the side baffle is perpendicular to the arc extension directions of the guiding member and the ear folding plate. The ear folding plate can make the ears fold inwards first and be located inside the side support plates on the front and back sides, facilitating subsequent fixing operations.

[0016] Preferably, the left side baffle is respectively installed on the first mounting plate at the front and back, and the right side baffle is respectively installed on the second mounting plate at the front and back. At least one of the first mounting plate and the second mounting plate is installed on the first adjusting roller through a nut. The first adjusting roller is connected with a first adjusting power source for driving its rotation. The first adjusting roller is in threaded cooperation with the nut to drive the connected first mounting plate or the second mounting plate to move axially; the side folding plate is opposite to the middle position of the vertical forming channel. The side folding plate is installed on the third mounting plate. The third mounting plate is installed on the second adjusting roller through a nut. The second adjusting roller is connected with a second adjusting power source for driving its rotation. The second adjusting roller is in threaded cooperation with the nut to drive the connected third mounting plate to move axially.

[0017] Due to the adoption of the above technical solutions, the utility model has remarkable technical effects: only need to pre-operate the cardboard by other devices for mounting, die-cutting, slotting or scribing, and the cardboard is conveyed, processed and formed in the full-automatic process of the box cover, realizing the rapid, accurate and efficient completion of the box cover, especially suitable for large-scale production environments, and can significantly improve the automation degree of carton packaging;

[0018] A new box forming method is adopted. When folding the box body, first stack the left and right folding plates and side support plates, enter the forming device after glue spraying and conveying, only need to erect the stacked left and right sides, fold the ears inwards, then turn up the front and back folding plates to make the ears cooperate with the limit card slots of the folding plates, and finally insert the side support plates inward to wrap the ears, thus forming a formed box cover. Compared with the traditional box forming method, it eliminates the process of manually pasting the grey board into a blank box, is convenient and fast, has high forming efficiency, and can reduce manual work.

[0019] For the formed box cover, instead of using additional corner positioning and forming, a structure is adopted in which the ears of a side support are inserted into the card slots between the facing paper and the grey board layer of the adjacent side support plates. The inner and outer sides of the folded corners have vertical planes. The extrusion of the two vertical planes can fully lock the ears to strengthen the corners of the box body, forming fixing forces in different directions, making the box body more stable, with flat inner and outer planes and more beautiful. Description of the Drawings

[0020] Figure 1 is a structural schematic diagram of the present utility model;

[0021] Figure 2 is Figure 1 a partial enlarged view of A in

[0022] Figure 3 is a structural schematic diagram of another angle of the present utility model;

[0023] Figure 4 is Figure 3 a partial enlarged view of B in

[0024] Figure 5 is a structural schematic diagram of the connecting steering device;

[0025] Figure 6 is Figure 5 a partial enlarged view of C in

[0026] Figure 7 is a structural schematic diagram of the heaven-and-earth cover forming device;

[0027] Figure 8 is a partial structural schematic diagram of the heaven-and-earth cover forming device;

[0028] Figure 9 is an internal structural schematic diagram of the heaven-and-earth cover forming device;

[0029] Figure 10 is a structural schematic diagram of the flat cardboard structure;

[0030] Figure 11 is a structural schematic diagram of the cardboard in another state;

[0031] Figure 12 is a process schematic diagram of the cardboard forming into a heaven-and-earth cover box;

[0032] The names of the parts referred to by each numerical label in the above drawings are as follows: Among them, 1. paper feeding device; 2. horizontal hemming device; 21. guiding hemming part; 22. adjusting part; 3. connecting and turning device; 31. longitudinal retaining part; 32. lifting suction cup; 33. horizontal limiting baffle; 34. mounting bracket; 35. synchronous pulley; 36. horizontal moving power source; 4. top and bottom cover forming device; 41. vertical forming channel; 42. forming die; 43. guiding part; 44. side baffle; 441. mounting plate one; 442. mounting plate two; 443. adjusting roller one; 444. adjusting power source one; 45. side folding plate; 451. mounting plate three; 452. adjusting roller two; 453. adjusting power source two; 454. side folding power source; 46. manipulator; 461. suction nozzle; 47. ear folding plate; 48. arc guiding surface; 5. gluing mechanism; 51. first gluing device; 52. second gluing device; 53. printing rubber roller; 54. rubber spreading roller; 55. third gluing device; 61. horizontal conveying mechanism; 62. longitudinal conveying mechanism; 63. conveying belt one; 64. pressing wheel; 65. longitudinal conveying belt; 66. horizontal conveying belt; 7. deviation rectifying device; 71. deviation rectifying wheel; 72. deviation rectifying baffle;

[0033] 81. bottom plate; 8201. side support plate one; 8202. side support plate two; 8301. folding plate one; 8302. folding plate two; 84. face paper layer; 841. edge wrapping; 85. grey board layer; 86. ear; 87. limiting card slot; 89. V-shaped groove. Specific embodiments

[0034] The present invention will be further described in detail below with reference to the drawings and embodiments. Embodiment

[0035] A fully automatic seamless top and bottom cover box forming machine, as Figure 1-7As shown in the figure, it includes a paper feeding device 1 for outputting cardboard with a grey board layer and a face paper layer laminated, a lateral folding device 2, a connecting and turning device 3, and a lid and bottom forming device 4. It also includes an adhesive applying mechanism 5 and a cardboard conveying device. The adhesive applying mechanism 5 is arranged on the cardboard conveying path. The lateral folding device 2 is used to fold the folding plates on the left and right of the cardboard and the side support plates in half to form side plates. The cardboard conveying device includes a lateral conveying mechanism 61 and a longitudinal conveying mechanism 62 at the connecting and turning device 3. The inlet end of the lateral conveying mechanism 61 is connected and conveyed with the lateral folding device 2, and the outlet end of the longitudinal conveying mechanism 62 is connected and conveyed with the lid and bottom forming device 4. The lateral conveying mechanism 61 and the longitudinal conveying mechanism 62 respectively have a lateral connection station and a longitudinal connection station that are staggered with each other and not in the same horizontal plane. The connecting and turning device 3 includes a longitudinal stopper 31 and a lifting suction cup 32. The longitudinal stopper 31 is used to block the cardboard on the lateral connection station from continuing to be conveyed laterally. The lifting suction cup 32 can lift and move back and forth between the lateral connection station and the longitudinal connection station, and is used to suck the cardboard on the lateral connection station to the longitudinal connection station without horizontal offset.

[0036] As Figure 7-9 shown in the figure, the lid and bottom forming device 4 includes a vertical forming channel 41. Above the vertical forming channel 41, there is a forming die 42 which can move up and down to press the cardboard into the vertical forming channel 41 for forming. On the left and right sides of the vertical forming channel 41, there are guide members 43 for the left and right sides of the folded cardboard to stand upright and enter the vertical forming channel 41. On the front and back sides of the vertical forming channel 41, there are respectively side baffles 44 for erecting the front and back side support plates of the cardboard. On the front and back sides of the vertical forming channel 41, there are also respectively side folding plates 45. The side folding plates 45 are connected with a side folding power source 454 that can drive them to move back and forth, and are used to fold the folding plates on the front and back of the cardboard inward to the inner side of the side support plates. The horizontal position where the side folding plates 45 are located is lower than the horizontal position of the upper edge of the side baffles 44, and the top height of the guide members 43 is higher than the top of the side baffles 44.

[0037] A deviation rectifying device 7 is arranged between the paper feeding device 1 and the lateral folding device 2. The deviation rectifying device 7 includes a plurality of deviation rectifying wheels 71 arranged along the cardboard conveying direction on the left and right sides, and deviation rectifying baffles 72 outside the deviation rectifying wheels 71 for limiting the cardboard.

[0038] The lateral folding device 2 includes a guiding and folding member 21. The guiding and folding member 21 supports the folding plates of the cardboard and forms a guide with an outer height and an inner low gradually along the conveying direction to fold the folding plates inward. The guiding and folding member 21 is a guide rod or a belt, and the guiding and folding member 21 is connected with an adjusting member 22 for adjusting its left and right positions.

[0039] The connecting and steering device 3 is also provided with a lateral limiting baffle 33, which is used to limit the cardboard completed with lateral hemming left and right on the lateral conveying mechanism 61; among the lateral conveying mechanism 61 and the longitudinal conveying mechanism 62, the one with a lower height is a belt or chain conveyor, and the one with a higher height includes conveying belts 63 on both left and right sides. A pressing wheel 64 is arranged above the conveying belt 63. The lateral limiting baffle 33 can move horizontally left and right and is directly opposite to the upper part of the conveying belt 63. The lifting suction cup 32 is located between the conveying belts 63 on both left and right sides. The connecting and steering device 3 includes mounting frames 34 on both left and right sides. Synchronous wheels 35 are arranged on the mounting frames 34. The conveying belt 63 is sleeved on the synchronous wheels 35 for conveying cardboard. The synchronous wheels 35 are connected with a lateral moving power source 36 for adjusting the positions of the left and right conveying belts 63.

[0040] The cardboard conveying device also includes a lateral conveying belt 66 and a longitudinal conveying belt 65. Air nozzles connected to a negative pressure source are distributed on both the lateral conveying belt 66 and the longitudinal conveying belt 65. The lateral conveying belt 66 is arranged on the inlet side of the lateral hemming device 2. The longitudinal conveying belt 65 connects the longitudinal conveying mechanism 62 and the lid and base forming device 4. The connection between the longitudinal conveying belt 65 and the longitudinal conveying mechanism 62 can be integrated or separated.

[0041] As Figure 2 shown, the gluing mechanism 5 includes a first gluing device 51 and a second gluing device 52. Both the first gluing device 51 and the second gluing device 52 include a gluing member 53. The first gluing device 51 is provided with a glue leveling roller 54 on the front side of the gluing member 53. The first gluing device 51 is arranged above the lateral conveying belt 66, and the second gluing device 52 is arranged above the longitudinal conveying belt 65.

[0042] The gluing mechanism 5 also includes a third gluing device 55, which is used to glue the folded ear part of the cardboard. The third gluing device 55 is also arranged above the lateral conveying belt 66 or the longitudinal conveying belt 65.

[0043] The lid and base forming device 4 includes a manipulator 46 for obtaining cardboard. A suction nozzle 461 for adsorbing the cardboard is arranged at the bottom of the manipulator 46, and the cardboard to be formed is conveyed to the entrance of the vertical forming channel 41. A folded ear folding plate 47 is arranged above the guiding member 43. The folded ear folding plate 47 is attached above the guiding member 43 and the inner surface thereof is located inside the inner surface of the guiding member 43. The upper ends of the guiding member 43 and the folded ear folding plate 47 both have an arc-shaped guiding surface 48 that turns outwards from bottom to top. The upper surface of the side baffle 44 also has an arc that turns outwards from bottom to top. The arc extension direction of the side baffle 44 is perpendicular to the arc extension directions of the guiding member 43 and the folded ear folding plate 47.

[0044] The side baffle 44 on the left is respectively installed on the first mounting plate 441 before and after, and the side baffle 44 on the right is respectively installed on the second mounting plate 442 before and after. At least one of the first mounting plate 441 and the second mounting plate 442 is installed on the first adjusting roller 443 through a nut. The first adjusting roller 443 is connected with a first adjusting power source 444 that drives its rotation. The first adjusting roller 443 is in threaded cooperation with the nut to drive the first mounting plate 441 or the second mounting plate 442 connected thereto to move axially; the side folding plate 45 faces the middle position of the vertical forming channel 41. The side folding plate 45 is installed on the third mounting plate 451. The third mounting plate 451 is installed on the second adjusting roller 452 through a nut. The second adjusting roller 452 is connected with a second adjusting power source 453 that drives its rotation. The second adjusting roller 452 is in threaded cooperation with the nut to drive the third mounting plate 451 connected thereto to move axially.

[0045] As Figure 10-12 shown, the working principle is as follows: The cardboard in the bin is cardboard with a grey board layer and a face paper layer laminated and having undergone die-cutting, slotting or scoring. The cardboard has a bottom plate, and side support plates extend outward from the bottom plate. Folding plates respectively extend outward from the front, back, left and right side support plates. Among them, folding ears extend from the front and back of the left and right side support plates, and limiting slots for inserting the folding ears are correspondingly formed in the grey board part of the front and back side support plates. There are creases or slots between the bottom plate and the side support plates and between the side support plates and the folding plates respectively, which are convenient for folding the box body. If it is a slot, when the first gluing device 51 and the second gluing device 52 apply glue, glue can be applied to the slots at the same time to increase the strength of the box body after forming. The paper feeding device 1 usually includes a bin for stacking cardboard and a feeder for sending out the cardboard, and other means conventional in the art can also be used to realize paper feeding, which is not limited herein. The lateral folding device 2 folds the folding plates on the left and right sides of the cardboard and the side support plates in half, and uses a belt or a guide rod to guide them to fold. Before this, there is a layer of glue between the folding plate and the side support plate, so that they will be bonded after folding. If it is carried out by a machine, the first gluing device 51 can be used to apply glue. The descriptions of left and right, front and back directions here are only for reference directions for convenience of description, rather than limitations on specific viewing directions.

[0046] After the paper feeding device 1 sends out the cardboard, it passes through the deviation correction device 7. The deviation correction baffle 72 on the side of the deviation correction device 7 will block the conveying position of the cardboard to limit it left and right. If there is an offset, the deviation correction wheel 71 presses on the cardboard to correct its conveying direction. Then it enters the first gluing device 51. The first gluing device 51 and the subsequent second gluing device 52 can apply glue by means of a rubber roller, or by means of a glue head for dotting glue, or by means of transfer glue. Subsequently, a glue leveling roller can be selected to level the glue. The cardboard conveying device conveys the cardboard throughout the process. The most common conveying method is to convey it by means of a conveyor belt, and it can also be conveyed by means of a chain push plate.

[0047] After gluing, it enters the horizontal edge folding device 2. One side of the cardboard in the horizontal edge folding device 2 is conveyed forward, and the folding plate is gradually wrapped and folded inward from the unfolded state by the guiding edge folding member 21 on the side.

[0048] The horizontal edge folding device 2 includes a guiding edge folding member 21. The guiding edge folding member 21 supports the folding plate of the cardboard and forms a guide with an outer high and inner low along the conveying direction to fold the folding plate inward. The guiding edge folding member 21 is a guide rod or a belt. The guiding edge folding member 21 is connected with an adjusting member 22 for adjusting its left and right positions. Since there is glue on the folding plate or the side support plate under the action of the first gluing device 51, after inward folding, the folding plates on the left and right sides and the side support plates are overlapped and fixed together. Then the cardboard enters the connection and turning device 3. The cardboard conveyed forward and backward needs to be changed to be conveyed in the left and right directions. Since their conveyances are in different directions, a lifting suction cup 32 is needed to realize the transfer of the working position. After the longitudinal stopper 31 blocks the cardboard on the horizontal connection working position from continuing to be conveyed horizontally, the lifting suction cup 32 rises to suck the cardboard, so that the horizontal position of the cardboard will not shift, thereby improving the accuracy of cardboard processing. After the lifting suction cup 32 sucks the cardboard, the lifting suction cup 32 descends to adsorb the cardboard onto the longitudinal connection working position on the longitudinal conveying mechanism 62. The adjusting member 22 can be a conventional structure of those skilled in the art such as a cylinder, a slider with an adjusting handwheel, a slider connected with a driving power source, etc.

[0049] Further optimized, the connection and turning device 3 is also provided with a horizontal limit baffle 33 to limit the left and right positions of the cardboard during horizontal conveyance. The horizontal limit baffle 33 can further move horizontally left and right to push the left and right pressed parts of the cardboard towards the middle, and the auxiliary suction cup sucks the cardboard downward. Furthermore, the horizontal conveying mechanism 61 includes conveying belts one 63 on the left and right sides. A pressing wheel 64 is arranged above the conveying belts one 63. The pressing wheel 64 presses the left and right sides of the cardboard. The conveying belts one 63 are sleeved on the synchronous wheels 35 on the mounting frame 34. The synchronous wheels 35 are connected with a horizontal movement power source 36. The horizontal movement power source is a common power source for those skilled in the art such as a cylinder and a motor. The movement of the synchronous wheels 35 can adjust the position and spacing between the left and right conveying belts one 63 to facilitate the conveyance of cardboard of different sizes.

[0050] The cardboard longitudinal conveying mechanism 62 conveys and enters the longitudinal conveying belt 65 distributed with air nozzles connected to a negative pressure source, and then the cardboard is kept flat and stably conveyed through the air nozzles without shifting during conveyance. During the process, after passing through the second gluing device 52 and the third gluing device 55, the cardboard enters the lid and base forming device 4. The suction cups on the manipulator suck the side support plates and folding plates on the front and back sides of the cardboard to prevent the folding plates from drooping. Then it reaches above the vertical forming channel 41. The forming die 42 presses downward against the bottom plate position of the cardboard. Under the action of the guiding member 43, the sides formed by the folded side support plates and folding plates on the left and right sides of the cardboard are blocked by the guiding member 43 and are turned up and erected relative to the bottom plate;

[0051] The folding ears on both sides of the side are guided by the folding ear folding plate 47 and are pushed inward along the arc-shaped guiding surface 48 at the top thereof, then contact the side baffle 44 and maintain a state perpendicular to the side but erected. Then, due to the height difference between the side baffle 44 and the guiding member 43, the side support plates on the front and rear sides of the cardboard are guided by the side baffle 44 and are folded inward after standing on the left and right sides. The side support plates on the front and rear sides cover the folding ears, so that the folding ears are engaged and adhered to the limit card slots of the side support plates on the front and rear sides. The cardboard continues to move downward, and the side folding plate 45 moves inward, folding the folding plates on the front and rear sides of the erected cardboard into the side support plates to form a lidless box. The formed lidless box directly moves downward for output or is carried upward by the forming pressure film to the upper outlet of the forming channel 41 and is clamped away by the clamping plate on the manipulator 46.

[0052] A forming process of a lidless box without traces is carried out by a fully automatic lidless box forming machine without traces. The lidless box without traces includes a box body main body having a unfolded state and a boxed state. The box body main body includes a bottom plate 81. Side support plates 8201 are arranged on the left and right of the bottom plate 81, and side support plates 8202 are arranged on the front and rear. The side support plates 8201 and 8202 extend along every two adjacent sides of the bottom plate 81. A folding plate 8301 extends outside the side support plate 8201, and a folding plate 8302 extends outside the side support plate 8202;

[0053] The box body main body in the unfolded state has a face paper layer 84 and a grey board layer 85 that are adhered to each other. The inner side of the face paper layer 84 is a face paper inner plane for adhering to the grey board layer 85, and the inner side of the grey board layer 85 is a grey board inner plane. There is a height difference between the face paper inner plane and the grey board inner plane;

[0054] Folding ears 86 are arranged on the front and rear sides of the side support plate 8201, and a limit card slot 87 is arranged on the adjacent side support plate 8202. The shape and position of the limit card slot 87 match those of the folding ear 86. The bottom of the limit card slot 87 is the face paper layer 84, and the edge of the limit card slot 87 is formed on the grey board layer 85;

[0055] The forming steps of the box body main body from the unfolded state are as follows:

[0056] A. The box body main body is output by the paper feeding device 1 and is horizontally conveyed along the front-rear direction. When the box body main body passes through the horizontal folding device 2, the left and right side support plates 8201 are pressed and limited, and the folding plate 8301 is folded inward along the folding line between it and the side support plate 8201, so that the grey board layer 85 of the folding plate 8301 is adhered to the grey board layer 85 of the side support plate 8201, and is folded and bonded to form side plates;

[0057] B. After the box body reaches the connecting and turning device 3, the left and right side plates are horizontally limited and laterally conveyed, and are turned by the connecting and turning device 3 into longitudinal conveyance in the left and right directions;

[0058] C. The box body enters the top and bottom cover forming device 4. Before this, glue is applied to the limit card slot 87, and glue is applied to at least one of the inner surfaces of the second side support plate 8202 and the second folding plate 8302;

[0059] Under the guidance of the guide member 43, the left and right side plates are turned up and kept upright. Under the guidance of the side baffle 44, the folding ears 86 on the front and rear sides of each first side support plate 8201 are turned inwards;

[0060] Under the limitation of the side baffle 44, the front and rear second side support plates 8202 are turned up along the fold line between the bottom plate 81 and the second side support plate 8202. The second side support plate 8202 wraps outside the folding ear 86, so that the folding ear 86 is engaged in the limit card slot 87, and the outer surface of the folding ear 86 is attached to the paper layer 84 under the limit card slot 87;

[0061] D. The side folding power source 454 drives the side folding plate 45 to move inwards. After the second folding plate 8302 is turned inwards towards the second side support plate 8202 until it is close to horizontal, the forming die 42 presses down to turn the second folding plate 8302 downwards and attach it to the inner wall of the second side support plate 8202, so that the grey board layer 85 of the second folding plate 8302 is attached to the grey board layer 85 of the second side support plate 8202.

[0062] After the first folding plate 8301 is folded in step D, the two side surfaces of the folding ear 86 coincide with the grey board layer 85 of the second folding plate 8302 and the paper layer 84 of the second side support plate 8202 respectively. The paper layer 84 of the limit card slot 87 of the second side support plate 8202 is coated with glue, so that the folding ear 86 is fixed to the paper layer 84 of the second side support plate 8202.

[0063] In step B, taking the example that the height of the lateral conveying mechanism 61 is higher than that of the longitudinal conveying mechanism 62 among the two, such as Figure 5As shown, the horizontal conveying mechanism 61 conveys the cardboard by clamping it with the conveying belts 63 on both sides and the pressing wheels 64. After being blocked by the horizontal limiting baffle 33, it reaches the horizontal connection station. At this time, the lifting suction cup 32 rises and holds the cardboard. Then, the horizontal power source 36 moves outwards, and the conveying belts 63 on both sides and the pressing wheels 64 both move outwards to make way so that the cardboard is only held by the lifting suction cup 32. The lifting suction cup 32 moves the cardboard vertically to the vertical connection station at the horizontal plane where the vertical conveying mechanism 62 is located. The lifting suction cup 32 descends to a position where the top surface is not higher than the upper plane of the vertical connection station, and the cardboard is conveyed forward by the vertical conveying mechanism 62, which is driven by a belt in the figure. In the figure, the vertical connection station is directly below the horizontal connection station. After the cardboard is located at the vertical connection station, the horizontal conveying mechanism 61 moves inwards and returns to its original position to receive the next cardboard.

[0064] Among them, the forming steps of the box body main body in the unfolded state are as follows:

[0065] Ⅰ. Die-cut the grey board layer 85, and at the same time form the limiting card slots 87;

[0066] Ⅱ. Coat glue on the face paper layer 84, and bond the grey board layer 85 and the face paper layer 84;

[0067] Ⅲ. Cut the face paper layer 84;

[0068] Ⅳ. Use a grooving machine to perform horizontal and vertical grooving on the grey board layer 85 to form the folding lines 89 between the bottom plate 81 and the first side support plate 8201, the folding lines 89 between the bottom plate 81 and the second side support plate 8202, the folding lines 89 between the first folding plate 8301 and the first side support plate 8201, and the folding lines 89 between the second folding plate 8302 and the second side support plate 8202;

[0069] Ⅴ. Coat glue on the inner surface of the grey board layer 85 of the first folding plate 8301;

[0070] Among them, the order of steps Ⅱ, Ⅲ, and Ⅳ can be arbitrarily adjusted. It also includes step Ⅵ. Glue is applied to the folding lines 9 opened in step Ⅳ. Step Ⅵ can be carried out before or after step Ⅴ or simultaneously with step Ⅴ.

[0071] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "length", "width", "thickness", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0072] In summary, the above are only the preferred embodiments of the present utility model, and all equivalent changes and modifications made in accordance with the scope of the patent application of the present utility model shall fall within the scope covered by the patent of the present utility model.

Claims

1. A fully automatic seamless lid and base box forming machine, comprising a paper feeding device (1) for outputting cardboard with a grey board layer and a face paper layer laminated, a lateral folding device (2), a connecting and turning device (3) and a lid and base forming device (4), further comprising an adhesive applying mechanism (5) and a cardboard conveying device, and the adhesive applying mechanism (5) is arranged on the cardboard conveying path; characterized in that: The horizontal hemming device (2) is used to fold the folding plates on the left and right of the cardboard in half with the side support plates to form side plates; the cardboard conveying device includes a horizontal conveying mechanism (61) and a vertical conveying mechanism (62) at the connection with the turning device (3). The inlet end of the horizontal conveying mechanism (61) is connected and conveyed with the horizontal hemming device (2), and the outlet end of the vertical conveying mechanism (62) is connected and conveyed with a lid and bottom forming device (4).

2. The fully automatic seamless lid and base box forming machine according to claim 1, wherein: The lid and bottom forming device (4) includes a vertical forming channel (41). Above the vertical forming channel (41), there is a forming die (42) which can move up and down to press the cardboard into the vertical forming channel (41) for forming. On the left and right sides of the vertical forming channel (41), there are guides (43) for the left and right sides of the folded cardboard to stand upright and enter the vertical forming channel (41). On the front and back sides of the vertical forming channel (41), there are side baffles (44) for erecting the front and back side support plates of the cardboard respectively. On the front and back sides of the vertical forming channel (41), there are also side folding plates (45) respectively. The side folding plates (45) are connected with a side folding power source (454) that can drive them to move back and forth, for folding the folding plates on the front and back of the cardboard towards the inside of the side support plates. The horizontal position where the side folding plates (45) are located is lower than the horizontal position of the upper edge of the side baffles (44), and the top height of the guides (43) is higher than the top of the side baffles (44).

3. The fully automatic seamless lid and bottom box forming machine according to claim 1, characterized in that: A deviation rectifying device (7) is arranged between the paper feeding device (1) and the horizontal hemming device (2). The deviation rectifying device (7) includes a plurality of deviation rectifying wheels (71) arranged along the cardboard conveying direction on the left and right sides, and deviation rectifying baffles (72) for limiting the cardboard outside the deviation rectifying wheels (71); the horizontal hemming device (2) includes a guiding and hemming member (21). The guiding and hemming member (21) supports the folding plates of the cardboard and folds the folding plates inward by gradually forming a guiding shape with the outer side being higher and the inner side being lower along the conveying direction. The guiding and hemming member (21) is a guide rod or a belt, and the guiding and hemming member (21) is connected with an adjusting member (22) for adjusting its left and right positions.

4. A fully automatic seamless lid and bottom box forming machine according to claim 1, characterized in that: The horizontal conveying mechanism (61) and the vertical conveying mechanism (62) respectively have a horizontal connection station and a vertical connection station that are staggered and not on the same horizontal plane. The connection turning device (3) includes a vertical stop member (31) and a lifting suction cup (32). The vertical stop member (31) is used to block the cardboard on the horizontal connection station from continuing to be conveyed horizontally. The lifting suction cup (32) can move up and down between the horizontal connection station and the vertical connection station, for sucking the cardboard on the horizontal connection station to the vertical connection station without horizontal deviation.

5. A fully automatic seamless lid and bottom box forming machine according to claim 4, characterized in that: The connecting and turning device (3) is further provided with a lateral limiting baffle (33), and the lateral limiting baffle (33) is used for laterally limiting the cardboard after the lateral hemming on the lateral conveying mechanism (61); among the lateral conveying mechanism (61) and the longitudinal conveying mechanism (62), the one with a higher height includes the conveying belts one (63) on the left and right sides. A pressing wheel (64) is arranged above the conveying belts one (63). The lateral limiting baffle (33) can move horizontally left and right and is directly opposite to the upper part of the conveying belts one (63). The lifting suction cup (32) is located between the conveying belts one (63) on the left and right sides; the connecting and turning device (3) includes mounting frames (34) on the left and right sides. Synchronous wheels (35) are arranged on the mounting frames (34). The conveying belts one (63) are sleeved on the synchronous wheels (35) for conveying the cardboard. The synchronous wheels (35) are connected with a lateral moving power source (36) for adjusting the positions of the conveying belts one (63) on the left and right to make a clearance for the longitudinal lifting of the cardboard. Among the lateral conveying mechanism (61) and the longitudinal conveying mechanism (62), the one with a lower height is a belt or chain conveying.

6. The full-automatic seamless heaven-and-earth cover box forming machine according to claim 1, wherein: The cardboard conveying device further includes a lateral conveying belt (66) and a longitudinal conveying belt (65). Air nozzles connected to a negative pressure source are distributed on both the lateral conveying belt (66) and the longitudinal conveying belt (65). The lateral conveying belt (66) is arranged on the inlet side of the lateral hemming device (2). The longitudinal conveying belt (65) connects the longitudinal conveying mechanism (62) and the lid forming device (4). The longitudinal conveying belt (65) and the longitudinal conveying mechanism (62) are the same component or different components.

7. A fully automatic seamless lid and bottom box forming machine according to claim 1, characterized in that: The gluing mechanism (5) includes a first gluing device (51) and a second gluing device (52). Both the first gluing device (51) and the second gluing device (52) include gluing members (53). The first gluing device (51) is provided with a glue leveling roller (54) on the front side of the gluing member (53). The first gluing device (51) is arranged above the lateral conveying belt (66). The second gluing device (52) is arranged above the longitudinal conveying belt (65); the gluing mechanism (5) further includes a third gluing device (55). The third gluing device (55) is used for gluing the folded ear part of the cardboard, and the third gluing device (55) is also arranged above the lateral conveying belt (66) or the longitudinal conveying belt (65).

8. A fully automatic seamless lid and base box forming machine according to claim 1, characterized in that: The lid forming device (4) includes a manipulator (46) for obtaining the cardboard. A suction nozzle (461) for adsorbing the cardboard is arranged at the bottom of the manipulator (46), and the cardboard to be formed is conveyed to the entrance of the vertical forming channel (41). A folded ear folding plate (47) is arranged above the guiding member (43). The folded ear folding plate (47) is attached above the guiding member (43) and its inner surface is located inside the inner surface of the guiding member (43). The upper ends of the guiding member (43) and the folded ear folding plate (47) both have arc-shaped guiding surfaces (48) that turn outwards from bottom to top. The upper surface of the side baffle (44) is also arc-shaped and turns outwards from bottom to top. The arc extension direction of the side baffle (44) is perpendicular to the arc extension directions of the guiding member (43) and the folded ear folding plate (47).

9. The full-automatic seamless lid and base box forming machine according to claim 1, characterized in that: The side baffle (44) on the left is respectively installed on the first mounting plate (441) before and after, and the side baffle (44) on the right is respectively installed on the second mounting plate (442) before and after. At least one of the first mounting plate (441) and the second mounting plate (442) is installed on the first adjusting roller (443) through a nut. The first adjusting roller (443) is connected with a first adjusting power source (444) that drives it to rotate. The first adjusting roller (443) is in threaded cooperation with the nut to drive the first mounting plate (441) or the second mounting plate (442) connected thereto to move axially. The side folding plate (45) faces the middle position of the vertical forming channel (41). The side folding plate (45) is installed on the third mounting plate (451). The third mounting plate (451) is installed on the second adjusting roller (452) through a nut. The second adjusting roller (452) is connected with a second adjusting power source (453) that drives it to rotate. The second adjusting roller (452) is in threaded cooperation with the nut to drive the third mounting plate (451) connected thereto to move axially.

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