Carton folding device and carton packaging machine

Abstract

The present invention provides a carton folding device and a carton packaging machine, the carton folding device comprises: a carton transport mechanism for carrying and transporting carton; a positioning mechanism for making the carton stay on the carton transport mechanism; a cover swinging mechanism for pushing the first sub-cover to fold relative to the second side plate, and for pushing the second sub-cover to fold relative to the fourth side plate; a folding tongue mechanism for making the cover tongue fold relative to the main cover; a cover closing mechanism for pushing the main cover so that the cover tongue is inserted into the inner cavity of the carton; a folding lock mechanism for pushing the lock to bend relative to the bending portion; and an inserting lock mechanism for pushing the bending portion so that the lock is inserted into the insertion hole. The carton folding device and the carton packaging machine provided by the present invention can complete the automatic folding of the carton through the carton folding device, without the need for manual folding, which can reduce labor costs and time costs.

Description

Technical Field

[0001] The present invention belongs to the technical field of packaging, and more specifically, relates to a paper box folding device and a paper box packaging machine. Background Art

[0002] Paper boxes are a common packaging material for product packaging. Paper boxes are usually folded into a flat shape when they are received. When they need to be packed, they need to be folded into a box shape according to the pre-bending lines. At present, paper boxes are usually folded manually, which consumes a lot of human resources. In addition, the speed of manual folding is slow, and the labor cost and time cost are both high. Summary of the invention

[0003] The purpose of the embodiments of the present invention is to provide a carton folding device and a carton packaging machine to solve the technical problem of high labor cost and time cost caused by manual folding of carton in the prior art.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a paper box folding device, which is used to swing the cover, fold the tongue, close the cover, fold the lock and insert the lock on the paper box, the paper box includes a first side panel, a second side panel, a third side panel and a fourth side panel connected end to end in sequence, and also includes a first sub-cover connected to the second side panel, a second sub-cover connected to the fourth side panel, a main cover connected to the first side panel, a cover tongue connected to the main cover, a bent portion connected to the third side panel and a lock connected to the bent portion, the connection between the main cover and the cover tongue has an insertion hole, and the paper box folding device includes:

[0005] A carton transport mechanism, used for carrying and transporting the carton;

[0006] A positioning mechanism, used to make the carton stay on the carton transport mechanism;

[0007] A cover swing mechanism, used for pushing the first sub-cover to fold relative to the second side plate, and for pushing the second sub-cover to fold relative to the fourth side plate;

[0008] A folding tongue mechanism, used for folding the cover tongue relative to the main cover;

[0009] A cover closing mechanism, used for pushing the main cover so that the cover tongue is inserted into the inner cavity of the paper box;

[0010] A folding lock mechanism, used for pushing the lock to bend relative to the bending portion; and

[0011] The locking mechanism is used to push the bent portion so that the locking buckle is inserted into the insertion hole.

[0012] In one embodiment, the swing cover mechanism includes a swing cover cylinder for pushing the first sub-cover to fold relative to the second side plate and a first guide rod for pushing the second sub-cover to fold relative to the fourth side plate.

[0013] In one embodiment, the tongue folding mechanism includes a second guide rod for pushing the main cover to fold relative to the third side panel, a tongue folding cylinder for pushing the cover tongue to fold relative to the main cover, and a support plate for supporting the main cover when folding the tongue.

[0014] In one embodiment, the folding and locking mechanism includes a third guide rod for folding the bending portion relative to the third side plate, a folding and locking cylinder for pushing the lock to fold relative to the bending portion, and a first support member for supporting the bending portion.

[0015] In one embodiment, the latch mechanism comprises a latch cylinder for inserting the latch into the insertion hole and a second support member for preventing the latch from rebounding.

[0016] In one embodiment, the paper box transport mechanism has a tongue folding station, a cover closing station and a lock buckle station, and the positioning mechanism is provided at the tongue folding station, the cover closing station and the lock buckle station. The tongue folding mechanism is arranged at the tongue folding station, the cover closing mechanism and the folding lock buckle mechanism are both arranged at the cover closing station, and the lock buckle mechanism is arranged at the lock buckle station.

[0017] In one embodiment, the paper box folding device further includes a height adjustment structure, and the lid swinging mechanism, the tongue folding mechanism, the lid closing mechanism, the folding lock mechanism and the inserting lock mechanism are all connected to the height adjustment structure.

[0018] In one embodiment, the number of the height adjustment structures is three, and they are arranged sequentially along the transport direction of the carton transport mechanism, the swing cover mechanism and the folding tongue mechanism are connected to the first height adjustment structure, the closing cover mechanism and the folding lock mechanism are connected to the second height adjustment structure, and the plug lock mechanism is connected to the third height adjustment structure.

[0019] In one embodiment, the carton transport mechanism comprises two belt transmission mechanisms disposed at intervals and a screw mechanism for adjusting the distance between the two belt transmission mechanisms, and the carton is transmitted by being clamped by the belts of the two belt transmission mechanisms.

[0020] The present invention also provides a paper box packaging machine, comprising the above-mentioned paper box folding device.

[0021] The beneficial effects of the carton folding device and carton packaging machine provided by the present invention are as follows: compared with the prior art, the carton folding device of the present invention can fold the first sub-cover and the second sub-cover by setting a cover swing mechanism, can fold the cover tongue by setting a tongue folding mechanism, can move the cover tongue to the opening of the carton by a cover closing mechanism, and insert the cover tongue into the inner cavity of the carton, insert the lock into the insertion hole by a folding lock mechanism and an inserting lock mechanism, and, by the cooperation of the carton transport mechanism and the positioning mechanism, can make the carton stay at the corresponding station for folding. In this way, the carton can be automatically folded by the carton folding device without manual folding, which can reduce labor costs and time costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 A three-dimensional structural diagram of a paper box provided in an embodiment of the present invention;

[0024] Figure 2 The three-dimensional structure of the paper box folding device provided by the embodiment of the present invention Figure 1 ;

[0025] Figure 3 The three-dimensional structure of the paper box folding device provided by the embodiment of the present invention Figure 2 ;

[0026] Figure 4 The three-dimensional structure of the swing cover mechanism and the folding tongue mechanism provided in the embodiment of the present invention Figure 1 ;

[0027] Figure 5 The three-dimensional structure of the swing cover mechanism and the folding tongue mechanism provided in the embodiment of the present invention Figure 2 ;

[0028] Figure 6 A three-dimensional structural diagram of a cover closing mechanism and a folding and locking mechanism provided in an embodiment of the present invention;

[0029] Figure 7 A three-dimensional structural diagram of a latch mechanism provided in an embodiment of the present invention.

[0030] Among them, the reference numerals in the figure are:

[0031] 100-paper box; 010-first side panel; 020-second side panel; 030-third side panel; 040-fourth side panel; 061-first sub-cover; 062-second sub-cover; 063-main cover; 064-cover tongue; 065-insertion hole; 066-bending part; 067-lock buckle;

[0032] 1-carton transport mechanism; 11-belt transmission mechanism; 12-screw mechanism; 2-positioning mechanism; 3-rocking cover mechanism; 31-rocking cover cylinder; 32-push-up member; 33-first guide rod; 4-folding tongue mechanism; 41-second guide rod; 42-folding tongue cylinder; 43-support plate; 431-inclined surface; 432-vertical surface; 44-fourth guide rod; 5-closing cover mechanism; 6-folding lock mechanism; 61-folding lock cylinder; 62-first support member; 63-fifth guide rod; 64-third guide rod; 7-insertion lock mechanism; 71-insertion lock cylinder; 72-second support member; 73-sixth guide rod; 8-height adjustment structure; 81-sliding plate; 811-strip hole; 82-height adjustment support block; 83-height adjustment screw; 84-height adjustment nut block; 85-fixing member; 86-mounting plate. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0035] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0037] The paper box folding device provided by the embodiment of the present invention is now described. The paper box folding device is used to perform cover shaking action, tongue folding action, cover closing action, lock folding action and lock insertion action on the paper box 100 to realize automatic folding of the paper box 100. Among them, the paper box 100 includes a first side panel 010, a second side panel 020, a third side panel 030 and a fourth side panel 040 connected end to end in sequence. After the paper box 100 is opened, the first side panel 010, the second side panel 020, the third side panel 030 and the fourth side panel 040 are enclosed to form a quadrilateral. The paper box 100 also includes a first sub-cover 061, a second sub-cover 062, a main cover 063, a cover tongue 064, a bending portion 066 and a lock 067. The first sub-cover 061 is connected to the second side panel 0 20, the second sub-cover 062 is connected to the fourth side plate 040, the main cover 063 is connected to the first side plate 010, the cover tongue 064 is connected to the main cover 063, a plug hole 065 is provided at the connection between the main cover 063 and the cover tongue 064, the bending portion 066 is connected to the third side plate 030, and the lock buckle 067 is connected to the bending portion 066. The setting of the bending portion 066 allows the lock buckle 067 to have enough movable space relative to the third side plate 030, so that the lock buckle 067 can be smoothly inserted into the plug hole 065.

[0038] In one embodiment of the present invention, see Figure 2 and Figure 3The carton folding device includes a carton transport mechanism 1, a positioning mechanism 2, a cover swing mechanism 3, a tongue folding mechanism 4, a cover closing mechanism 5, a folding and locking mechanism 6, and a locking mechanism 7. The carton transport mechanism 1 is used to transport the carton 100. During the transportation of the carton 100, the carton 100 can be folded. The positioning mechanism 2 is used to stop the carton 100 on the carton transport mechanism 1, so that the carton 100 can be folded at the tongue folding mechanism 4, closed at the cover closing mechanism 5, folded and locked at the folding and locking mechanism 6, and locked at the locking mechanism 7. The cover swing mechanism 3 is used to push the first sub-cover 061 to fold the first sub-cover 061 relative to the second side plate 020, and is also used to push the second sub-cover 062 to fold the second sub-cover 062 relative to the fourth side plate 040, completing the cover swinging action of the first sub-cover 061 and the second sub-cover 062. The folding tongue mechanism 4 is used to push the cover tongue 064 so that the cover tongue 064 is folded relative to the main cover 063. The closing cover mechanism 5 is used to push the main cover 063 so that the cover tongue 064 is inserted into the inner cavity of the paper box 100, and the main cover 063 is covered at the opening of the paper box 100. The folding lock mechanism 6 is used to push the lock 067 so that the lock 067 is bent relative to the bending portion 066. The inserting lock mechanism 7 is used to push the bending portion 066 so that the bending portion 066 and the lock 067 move together, and finally the lock 067 is inserted into the insertion hole 065.

[0039] The carton folding device in the above embodiment can fold the first sub-cover 061 and the second sub-cover 062 by setting the cover swing mechanism 3, can fold the cover tongue 064 by setting the folding tongue mechanism 4, can move the cover tongue 064 to the opening of the carton 100 by the cover closing mechanism 5, and insert the cover tongue 064 into the inner cavity of the carton 100, insert the lock 067 into the insertion hole 065 by the folding lock mechanism 6 and the inserting lock mechanism 7, and, through the cooperation of the carton transport mechanism 1 and the positioning mechanism 2, can make the carton 100 stay at the corresponding station for folding. In this way, the carton 100 folding device can complete the automatic folding of the carton 100 without manual folding, which can reduce the labor cost and time cost.

[0040] In one embodiment of the present invention, see Figure 2 and Figure 3 The carton transport mechanism 1 includes two belt transmission mechanisms 11 arranged at intervals, and the distance between the two belt transmission mechanisms 11 can be adjusted by a screw mechanism 12. The carton 100 is sandwiched between the two belt transmission mechanisms 11, and the belts of the two belt transmission mechanisms 11 clamp the carton 100, driving the carton 100 to move. Since the distance between the two belt transmission mechanisms 11 is adjustable, the carton transport mechanism 1 can be applied to carton 100 of different widths. Among them, the belt transmission mechanism 11 and the screw mechanism 12 are prior arts, and their specific structures are not repeated here.

[0041] In one embodiment of the present invention, see Figure 3 The positioning mechanism 2 includes a lifting cylinder and a baffle, the baffle is connected to the moving end of the lifting cylinder, and is driven by the lifting cylinder to lift the baffle. When the paper box 100 moves to the folding tongue mechanism 4, the cover closing mechanism 5, the folding lock mechanism 6 or the inserting lock mechanism 7, the lifting cylinder drives the baffle to rise, blocking the paper box 100, so that the paper box 100 cannot move further, thereby preparing for closing the cover or inserting the lock.

[0042] In one embodiment of the present invention, see Figure 4 The cover-climbing mechanism 3 includes a cover-climbing cylinder 31 and a first guide rod 33. The cover-climbing cylinder 31 is used to push the first sub-cover 061 so that the first sub-cover 061 is folded relative to the second side plate 020. The first guide rod 33 is used to push the second sub-cover 062 so that the second sub-cover 062 is folded relative to the fourth side plate 040. The paper box 100 is placed on the paper box transport mechanism 1 for transportation. During the transportation of the paper box 100, the cover-climbing cylinder 31 pushes the first sub-cover 061 so that the first sub-cover 061 is folded relative to the second side plate 020, thereby realizing the cover-climbing action of the first sub-cover 061. In other embodiments, a positioning mechanism 2 may also be provided at the cover-climbing cylinder 31 so that after the paper box 100 stays on the paper box transport mechanism 1, the cover-climbing cylinder 31 performs the cover-climbing action of the first sub-cover 061. After the first sub-cover 061 is swung, the paper box 100 continues to move with the paper box transport mechanism 1, and the first guide rod 33 can push the second sub-cover 062 to fold the second sub-cover 062 relative to the fourth side plate 040, thereby realizing the swung action of the second sub-cover 062.

[0043] Optionally, the cover-shaking cylinder 31 is a rotary cylinder capable of outputting a rotary motion. When the output end of the rotary cylinder rotates counterclockwise, the first sub-cover 061 can be pushed toward the opening of the paper box 100. Optionally, the output end of the rotary cylinder is connected to a push-out member 32, and one end of the push-out member 32 used to push the first sub-cover 061 is in an arrow shape, which can prevent the end of the push-out member 32 from getting stuck in the paper box 100, thereby ensuring the stability of the cover-shaking action. In other embodiments, the cover-shaking cylinder 31 can also be a linear cylinder, which pushes the first sub-cover 061 in a direction perpendicular to the second side plate 020, and the cover-shaking action of the first sub-cover 061 can also be achieved.

[0044] In one embodiment of the present invention, see Figure 4 and Figure 5, the tongue folding mechanism 4 includes a second guide rod 41, a tongue folding cylinder 42 and a support plate 43. After the cover is shaken, the paper box 100 continues to move with the paper box transport mechanism 1. During the movement, the second guide rod 41 pushes the main cover 063, so that the main cover 063 is folded relative to the first side plate 010, and the cover tongue 064 is moved to be able to face the tongue folding cylinder 42. When the paper box 100 moves to the tongue folding cylinder 42 (the cover tongue 064 faces the tongue folding cylinder 42), the positioning mechanism 2 works, so that the paper box 100 stays at the tongue folding cylinder 42, ready to perform the tongue folding action. When the tongue folding cylinder 42 pushes the cover tongue 064 to fold relative to the main cover 063, the support plate 43 supports the main cover 063 to achieve the tongue folding action.

[0045] Optionally, the support plate 43 has an inclined surface 431 and a vertical surface 432. Specifically, after being pushed by the second guide rod 41, the main cover 063 is in an inclined state, and the inclined surface 431 is used to support the main cover 063 so that the cover tongue 064 on the main cover 063 can be folded freely. When the folding tongue cylinder 42 pushes the cover tongue 064 downward, the cover tongue 064 is folded relative to the main cover 063 until it is clamped in the gap formed by the moving end of the folding tongue cylinder 42 and the vertical surface 432, so that the cover tongue 064 is arranged vertically, which is convenient for subsequent closing of the cover. It should be noted that the folding tongue cylinder 42 can also push the cover tongue 064 upward to achieve the folding tongue action. The pushing direction of the folding tongue cylinder 42 is related to the placement direction of the paper box 100, and the movement direction of the folding tongue cylinder 42 when folding the tongue is not limited here.

[0046] In one embodiment of the present invention, see Figure 4 The tongue folding mechanism 4 also includes a fourth guide rod 44, which is used to stop the first sub-cover 061 and the second sub-cover 062, so that the first sub-cover 061 and the second sub-cover 062 remain in the position after the cover is shaken, preventing the first sub-cover 061 and the second sub-cover 062 from rebounding, so as to avoid affecting the subsequent tongue folding and closing actions.

[0047] In one embodiment of the present invention, see Figure 6 The cover closing mechanism 5 includes a cover closing cylinder, which can output linear motion, thereby pushing the main cover 063, so that the main cover 063 gradually approaches and covers the opening of the paper box 100, and the cover tongue 064 is inserted into the inner cavity of the paper box 100. When the side panels of the paper box 100 are arranged vertically, the main cover 063 is in an inclined state before closing the cover, and the main cover 063 is pushed to a horizontal state by the push of the cover closing cylinder and covers the opening of the paper box 100. Accordingly, the moving direction of the moving end of the cover closing cylinder is the vertical direction.

[0048] In one embodiment of the present invention, see Figure 4 and Figure 6The folding and locking mechanism 6 includes a third guide rod 64, a folding and locking cylinder 61 and a first support member 62. The third guide rod 64 is used to push the bending portion 066 so that the bending portion 066 is folded relative to the third side plate 030. After the bending portion 066 is folded, the bending portion 066 and the lock 067 are both in an inclined state. Among them, the third guide rod 64 can be arranged close to the swing cover mechanism 3, or close to the folding tongue mechanism 4, and the specific position of the third guide rod 64 is not limited here. The folding and locking cylinder 61 is used to push the lock 067 so that the lock 067 is folded relative to the bending portion 066 to prepare for the subsequent insertion of the lock 067. The first support member 62 is used to support the bending portion 066 to prevent the bending portion 066 from moving after being subjected to the force of the lock 067. More specifically, the first support member 62 is supported on the side of the bending portion 066 facing the inner cavity of the paper box 100, and the folding lock cylinder 61 pushes the lock 067 toward the inner cavity of the paper box 100. When the side panels of the paper box 100 are arranged vertically, the lock 067 and the bending portion 066 are arranged obliquely before the folding lock 067 moves, and the first support member 62 is inserted between the bending portion 066 and the third side panel 030 as the paper box 100 moves, and the moving end of the folding lock cylinder 61 moves horizontally, pushing the lock 067 so that the lock 067 is in a nearly horizontal state. Among them, the first support member 62 can be in a long strip shape, and the cross section of the first support member 62 is not limited here, and can be circular, square, etc.

[0049] Optionally, the folding and locking mechanism 6 further includes a fifth guide rod 63, which is used to abut against the opening side of the main cover 063 facing away from the paper box 100, so as to prevent the main cover 063 from rebounding.

[0050] In one embodiment of the present invention, see Figure 7 The locking mechanism 7 includes a locking cylinder 71 and a second support member 72. The locking cylinder 71 is used to push the bending portion 066. When the bending portion 066 moves, the lock 067 also moves toward the inner cavity of the paper box 100, so that the lock 067 is inserted into the inner cavity of the paper box 100. The second support member 72 is used to abut against the lock 067 to prevent the lock 067 from rebounding after folding, so as to ensure that when the bending portion 066 is pushed, the lock 067 can be aligned with the insertion hole 065 and smoothly inserted into the insertion hole 065. Among them, the second support member 72 can be in a long strip shape, and the cross section of the second support member 72 is not limited here, and can be round, square, L-shaped, etc.

[0051] Optionally, the latch mechanism 7 further includes a sixth guide rod 73, which is used to abut against the opening side of the main cover 063 facing away from the paper box 100, so as to prevent the main cover 063 from rebounding after closing the cover.

[0052] In one embodiment of the present invention, see Figure 2, the carton transport mechanism 1 has a tongue folding station, a cover closing station and a lock inserting station, and the tongue folding station, the cover closing station and the lock inserting station are all provided with a positioning mechanism 2, so that the carton 100 can stay at the tongue folding station for tongue folding, the carton 100 can stay at the cover closing station for cover closing, and the carton 100 can stay at the lock inserting station for lock inserting. The tongue folding mechanism 4 is arranged at the tongue folding station, the cover closing mechanism 5 and the folding lock mechanism 6 are both arranged at the cover closing station, and the lock inserting mechanism 7 is arranged at the lock inserting station. When the cover closing mechanism 5 and the folding lock mechanism 6 are both arranged at the cover closing station, for the same carton 100, the cover closing action and the folding lock action can be performed simultaneously, which can shorten the length of the carton transport mechanism 1 and improve work efficiency. In other embodiments, the cover closing mechanism 5 and the folding lock mechanism 6 can also be arranged at different stations respectively.

[0053] In one embodiment of the present invention, the paper box folding device also includes a height adjustment structure 8, and the swing cover mechanism 3, the folding tongue mechanism 4, the closing cover mechanism 5, the folding lock mechanism 6 and the insert lock mechanism 7 are all connected to the height adjustment structure 8, so that the heights of the swing cover mechanism 3, the folding tongue mechanism 4, the closing cover mechanism 5, the folding lock mechanism 6 and the insert lock mechanism 7 can be adjusted, thereby making the paper box folding device suitable for paper boxes 100 of various heights.

[0054] Optionally, the number of height adjustment structures 8 is one, and the cover swing mechanism 3, the tongue folding mechanism 4, the cover closing mechanism 5, the folding lock mechanism 6 and the plug-in lock mechanism 7 are all connected to the height adjustment structure 8. Alternatively, the number of height adjustment structures 8 is five, and the cover swing mechanism 3, the tongue folding mechanism 4, the cover closing mechanism 5, the folding lock mechanism 6 and the plug-in lock mechanism 7 are respectively connected to each height adjustment structure 8. Alternatively, the number of height adjustment structures 8 is three, and the cover swing mechanism 3 and the tongue folding mechanism 4 are connected to the first height adjustment structure 8, the cover closing mechanism 5 and the folding lock mechanism 6 are connected to the second height adjustment structure 8, and the plug-in lock mechanism 7 is connected to the third height adjustment structure 8, which can simplify the structure of the carton folding device without causing too many mechanisms to be installed on the height adjustment structure 8, thereby not affecting the stability of each height adjustment structure 8.

[0055] Optionally, see Figure 5The height adjustment structure 8 includes a sliding plate 81, a height adjustment support block 82, a height adjustment screw 83, a height adjustment nut block 84, a fixing member 85 and a mounting plate 86. The cover swing mechanism 3, the folding tongue mechanism 4, the cover closing mechanism 5, the folding lock mechanism 6 and the inserting lock mechanism 7 are fixed on the corresponding mounting plate 86. The height adjustment support block 82 is fixed on the sliding plate 81. The height adjustment support block 82 is used to support the height adjustment screw 83. The height adjustment screw 83 is inserted into the height adjustment support block 82. The height adjustment nut block 84 is threadedly connected to the height adjustment screw 83. The sliding plate 81 is slidably connected to the mounting plate 86, so that when the height adjustment screw 83 rotates, the height adjustment nut block 84 thereon moves vertically, and the height adjustment nut block 84 is fixedly connected to the mounting plate 86, so that the mechanism on the mounting plate 86 can move vertically. The fixing member 85 is used to fix the sliding plate 81 and the mounting plate 86. When the height needs to be adjusted, the fixing member 85 is loosened, and the height adjustment screw 83 is rotated to slide the sliding plate 81 to the set position, and then the fixing member 85 locks the sliding plate 81 and the mounting plate 86.

[0056] Optionally, a slider is fixed on the sliding plate 81 , a slide rail is fixed on the mounting plate 86 , and the slider is slidably connected to the slide rail, so that the sliding plate 81 is slidably connected to the mounting plate 86 .

[0057] Optionally, see Figure 5 The sliding plate 81 is provided with a strip hole 811, and the fixing member 85 is a threaded member, which passes through the strip hole 811 and is threadedly connected to the mounting plate 86, so as to realize the fixed connection between the sliding plate 81 and the mounting plate 86. The arrangement of the strip hole 811 makes the screw hole on the mounting plate 86 always exposed within the range corresponding to the strip hole 811, and after the sliding plate 81 slides, the threaded member can still pass through the sliding plate 81 and be connected to the mounting plate 86.

[0058] The present invention also provides a carton packaging machine, which includes the carton folding device in any of the above embodiments, and can fold the upper cover of the carton 100. The carton packaging machine may also include a lower cover folding device for folding the lower cover of the carton 100. After being folded by the lower cover folding device, the carton 100 is transported, and during the transportation of the carton 100, the product is filled into the carton 100, and then the upper cover is folded and buckled by the carton 100 folding device.

[0059] The carton packaging machine provided by the present invention adopts the above-mentioned carton folding device, and the first sub-cover 061 and the second sub-cover 062 can be folded by setting the cover swing mechanism 3, and the cover tongue 064 can be folded by setting the folding tongue mechanism 4, and the cover tongue 064 can be moved to the opening of the carton 100 by the cover closing mechanism 5, and the cover tongue 064 is inserted into the inner cavity of the carton 100, and the lock 067 is inserted into the insertion hole 065 by the folding lock mechanism 6 and the inserting lock mechanism 7, and the carton 100 can be stopped at the corresponding station for folding by the cooperation of the carton transport mechanism 1 and the positioning mechanism 2. In this way, the carton 100 can be automatically folded by the carton folding device, without the need for manual folding, which can reduce labor costs and time costs.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A paper box folding device, used for shaking the cover, folding the tongue, closing the cover, folding the lock and inserting the lock on the paper box, the paper box comprises a first side panel, a second side panel, a third side panel and a fourth side panel connected end to end in sequence, and also comprises a first sub-cover connected to the second side panel, a second sub-cover connected to the fourth side panel, a main cover connected to the first side panel, a cover tongue connected to the main cover, a bent portion connected to the third side panel and a lock connected to the bent portion, the connection between the main cover and the cover tongue has an insertion hole, It is characterized in that The carton folding device comprises: A carton transport mechanism, used for carrying and transporting the carton; the carton transport mechanism comprises two belt transmission mechanisms arranged at intervals and a screw mechanism for adjusting the distance between the two belt transmission mechanisms, and the carton is clamped and transported by the belts of the two belt transmission mechanisms; A positioning mechanism, used to make the carton stay on the carton transport mechanism; A cover-swinging mechanism, used for pushing the first sub-cover to fold relative to the second side plate, and for pushing the second sub-cover to fold relative to the fourth side plate; the cover-swinging mechanism comprises a cover-swinging cylinder for pushing the first sub-cover to fold relative to the second side plate, and a first guide rod for pushing the second sub-cover to fold relative to the fourth side plate; A tongue folding mechanism, used to fold the cover tongue relative to the main cover; the tongue folding mechanism comprises a second guide rod for pushing the main cover to fold relative to the third side plate, a tongue folding cylinder for pushing the cover tongue to fold relative to the main cover, and a support plate for supporting the main cover when the tongue is folded; the support plate has an inclined surface and a vertical surface, the main cover is in an inclined state after being pushed by the second guide rod, the inclined surface is used to support the main cover so that the cover tongue on the main cover can be folded freely, and when the tongue folding cylinder pushes the cover tongue, the cover tongue is folded relative to the main cover until it is clamped in the gap formed by the moving end of the tongue folding cylinder and the vertical surface, so that the cover tongue is arranged vertically; A cover closing mechanism, used for pushing the main cover so that the cover tongue is inserted into the inner cavity of the paper box; A folding lock mechanism, used for pushing the lock to bend relative to the bending portion; and A locking mechanism, used for pushing the bent portion to allow the locking buckle to be inserted into the insertion hole; The paper box folding device also includes a height adjustment structure, and the cover swing mechanism, the tongue folding mechanism, the cover closing mechanism, the folding lock mechanism and the inserting lock mechanism are all connected to the height adjustment structure.

2. The carton folding device according to claim 1, Features: The folding and locking mechanism comprises a third guide rod for folding the bending portion relative to the third side plate, a folding and locking cylinder for pushing the lock to fold relative to the bending portion, and a first support member for supporting the bending portion.

3. The carton folding device according to claim 1, Features: The locking mechanism comprises a locking cylinder for inserting the locking buckle into the insertion hole and a second supporting member for preventing the locking buckle from rebounding.

4. The carton folding device according to any one of claims 1 to 3, Features: The paper box transport mechanism comprises a tongue folding station, a cover closing station and a locking buckle station. The positioning mechanism is provided at the tongue folding station, the cover closing station and the locking buckle station. The tongue folding mechanism is provided at the tongue folding station, the cover closing mechanism and the folding locking buckle mechanism are both provided at the cover closing station, and the locking buckle mechanism is provided at the locking buckle station.

5. The carton folding device according to claim 1, Features: There are three height adjustment structures, which are arranged in sequence along the transmission direction of the paper box transport mechanism. The swing cover mechanism and the folding tongue mechanism are connected to the first height adjustment structure, the closing cover mechanism and the folding lock mechanism are connected to the second height adjustment structure, and the plug lock mechanism is connected to the third height adjustment structure.

6. A carton packaging machine, Features: It comprises the carton folding device according to any one of claims 1 to 5.

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