Carton unfolding device

Abstract

The invention discloses a carton unfolding device which comprises a carton feeding structure, a carton unfolding structure, a carton bottom flanging structure, a glue sealing supporting structure and a glue sealing structure. The carton feeding structure achieves carton conveying and positioning through cooperation of multiple components. The carton unfolding structure completes carton unfolding through an electromagnetic chuck, a guide rod and the like. According to the bottom flanging structure, a hydraulic telescopic rod drives a rotating arm to achieve carton bottom flanging; the glue sealing supporting structure is matched with the glue sealing structure, and carton glue sealing is completed through the roller, the rotary arm, the cutter and other components. According to the device, the automatic process of conveying, unfolding, bottom flanging and glue sealing of the carton is achieved, and the production efficiency and quality are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of carton packaging, and in particular to a carton unfolding device. Background Art

[0002] In the packaging industry, cartons are commonly used packaging containers, and their unfolding and sealing processes are crucial steps in the packaging production line. Traditionally, these operations have relied heavily on manual labor, resulting in low efficiency and high labor costs. Furthermore, manual operations lack stability and consistency, making it difficult to ensure consistent packaging quality. Some solutions employing automated equipment suffer from complex structures, inconsistent integration between functional modules, high equipment failure rates, and high maintenance costs, failing to meet the modern packaging industry's demand for efficient, stable, and cost-effective production. Summary of the Invention

[0003] In response to the above technical problems, this application solves the problem that traditional carton unfolding and sealing operations mostly rely on manual labor, which is not only inefficient and has high labor costs, but also the stability and consistency of manual operations are poor, making it difficult to ensure the uniformity of packaging quality.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted in this application is as follows: Carton feeding structure: Based on the first platform, four first frames are provided on its upper surface, and the position adjustment of the movable frame in the vertical and horizontal directions is achieved through the first screw, vertical guide rod, bevel gear transmission box, first turntable and other components. The partitions, hydraulic cylinders, hydraulic push rods, clamps, flaps and other structures provided on the movable frame, in conjunction with electromagnetic locks, movable sliders, carton push plates and other components, can accurately clamp, position and push cartons. At the same time, the rollers, belts, hydraulic telescopic rods, ratchets and other components in the transmission structure can realize intermittent conveying of cartons.

[0005] Carton unfolding structure: The frame is composed of horizontal bars, side panels, and back panels. The movement and positioning of the support arm are achieved through the first strip support, the second strip support, the second guide rod, the first guide rail slider with a locking function, and other components. The electromagnetic suction cup can absorb the carton. The third guide rod, the second guide rail slider with a locking function, the carton guide rod, the arc-shaped guide rod and other structures, together with the hydraulic telescopic rod and the rotating arm, can guide and unfold the carton. Carton bottom flanging structure: Utilizing the longitudinal connecting rod, the mounting plate, the pivot seat, the fourth pivot, the second pivot arm, the flip head and other components, under the drive of the fourth hydraulic telescopic rod, the engagement transmission of the driving gear and the driven gear realizes the flipping and closing of the front and rear flanges of the bottom of the carton; at the same time, in conjunction with the relevant components in the carton unfolding structure, the flipping of the left and right flanges of the bottom of the carton can be completed.

[0006] Sealing support structure: The second mounting plate on the support frame is used to place the sealing structure. The sealing limit plate, transition shaft, rotating drum, motor and other components constitute the belt conveying guide structure. The strip bottom plate, strip top plate, roller, belt and other components constitute the carton conveying channel, which can accurately transport the carton to the sealing station.

[0007] Sealing structure: The frame is formed by the first vertical board, the second vertical board and the third vertical board. The roller, rotating drum, rotary arm, roller, cutter and other components arranged inside, under the action of the gravity of the carton and the elastic force of the spring, realize the automatic winding, sealing and cutting of the tape to complete the sealing process of the carton.

[0008] The technical solution provided by the present invention has the following beneficial effects compared with the prior art:

[0009] 1. In the present invention, the carton unfolding device realizes a fully automated process from carton transportation, unfolding, bottom flanging to sealing through the organic combination and coordinated operation of various structures. Compared with the existing technology, it significantly improves production efficiency and reduces labor costs; the reasonable structural design ensures the stability and reliability of the device operation and reduces equipment maintenance costs; precise operation can ensure the quality of carton packaging and reduce the risk of product damage; the adjustable structural design enables it to adapt to cartons of different specifications, improves the versatility and utilization rate of the equipment, and effectively solves the problems existing in the existing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative labor.

[0011] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0012] Figure 2 for Figure 1 A top view of

[0013] Figure 3 for Figure 1 Right view;

[0014] Figure 4 for Figure 1 Enlarged view of S in the middle;

[0015] Figure 5 Schematic diagram of the structure of the carton delivery Figure 1 ;

[0016] Figure 6 Schematic diagram of the structure of the carton delivery Figure 2 ;

[0017] Figure 7 for Figure 5 Enlarged view of point G in the middle;

[0018] Figure 8 for Figure 6 Enlarged view of H in the middle;

[0019] Figure 9 for Figure 5 sectional view of

[0020] Figure 10 for Figure 9 Enlarged view of L in the middle;

[0021] Figure 11 It is a structural diagram of the carton unfolding structure and the carton bottom flanging structure;

[0022] Figure 12 for Figure 11 Right view;

[0023] Figure 13 for Figure 11 A partial enlarged view of the bottom flange structure of the middle carton;

[0024] Figure 14 Schematic diagram of the sealing support structure Figure 1 ;

[0025] Figure 15 Schematic diagram of the sealing support structure Figure 2 ;

[0026] Figure 16 Schematic diagram of the sealing structure;

[0027] Figure 17 for Figure 16 sectional view of

[0028] Figure 18 for Figure 16 Front view of .

[0029] Explanation of reference numerals: 101 - first platform; 102 - first frame; 103 - strip plate; 104 - first lead screw; 105 - bevel gear transmission box; 106 - first turntable; 107 - first turntable handle; 108 - movable frame; 109 - second lead screw; 110 - second turntable; 111 - second turntable handle; 112 - partition; 113 - guide bar; 114 - first support plate; 115 - hydraulic cylinder; 116 - hydraulic push rod; 117 - first clamping plate; 118 - flip plate; 119 - second clamping plate; 120 - first rotating shaft; 121 - auxiliary vertical plate; 122 - strip slider; 123 - limit plate; 124 - first motor; 125 - electromagnetic lock; 126 - moving slider; 127 - flip plate head; 1 28-first connecting rod; 129-support; 130-first spring; 131-rotating rod; 132-carton pushing plate; 133-handle; 134-door frame; 135-first sliding sleeve; 136-top pressure plate; 137-first adjustment plate; 138-first adjusting screw; 139-first adjustment seat; 140-second adjusting screw; 141-second sliding sleeve; 142-positioning cone; 143-second adjustment plate; 144-third adjusting screw; 145-second adjustment seat; 146-fourth adjusting screw; 147-inner support plate; 148-outer support plate; 149-first rotating shaft; 150-roller; 151-base plate; 152-transition ring; 153-ratchet; 154-shaft end retaining ring; 155-pawl ;156-second rotating shaft;157-first hydraulic telescopic rod;158-second hydraulic telescopic rod;159-support seat;160-first belt;161-vertical guide rod;201-cross bar;202-side panel;203-back panel;204-door and window;205-first strip support;206-second strip support;207-second guide rod;208-first guide rail slider with locking function;209-third strip support;210-third guide rod;211-second guide rail slider with locking function;212-carton guide rod;213-arc guide rod;214-first support plate;215-first mounting plate;216-third hydraulic telescopic rod;217-first swing arm;218-third rotating shaft;219- First rotating arm; 220 - first flap; 221 - support arm; 222 - fourth support; 223 - electromagnetic suction cup; 224 - vertical rod; 225 - third slider; 226 - fourth guide rod; 227 - longitudinal connecting rod; 228 - mounting plate; 229 - rotating shaft seat; 230 - fourth rotating shaft; 231 - second rotating arm; 232 - driving gear; 233 - driven gear; 234 - second swing arm; 235 - fourth hydraulic telescopic rod; 301 - support frame; 302 - second mounting plate; 303 - mounting window; 304 - mounting notch; 305 - second motor; 306 - first rotating drum; 307 - second flap; 308 - strip top plate; 309 - strip bottom plate; 310 - second belt; 311 - third motor;312-fifth rotating shaft; 313-limiting folding edge; 401-first vertical plate; 402-second support plate; 403-support rod; 404-second rotating drum; 405-baffle; 406-second vertical plate; 407-third vertical plate; 408-first roller; 409-second roller; 410-third roller; 411-transition plate; 412-third rotating drum; 413-first rotary arm; 414-first support arm; 415-first roller; 4 16 - second connecting rod; 417 - fourth rotating drum; 418 - second rotary arm; 419 - first connecting rod; 420 - second roller; 421 - second connecting rod; 422 - third connecting rod; 423 - second spring; 424 - third spring; 425 - third rotary arm; 426 - sixth rotating shaft; 427 - fourth connecting rod; 428 - cutter; 429 - film; 430 - tape; 431 - adjustment bar; 432 - fifth adjustment screw. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0031] Example 1

[0032] like Figures 1 to 18 As shown, a carton unfolding device, a carton feeding structure, a carton unfolding structure, a carton bottom flanging structure, a sealing support structure and a sealing structure;

[0033] The carton feeding structure is arranged in front of the carton unfolding structure, the carton bottom flanging structure is arranged below the carton unfolding structure, the glue sealing support structure is arranged on the right side of the carton unfolding structure, and the glue sealing structure is assembled on the glue sealing support structure.

[0034] like Figures 1 to 18As shown, in this embodiment, the carton feeding structure includes a first platform 101, and four first frames 102 are provided on the upper surface of the first platform 101, and a strip plate 103 is provided on the top of the two first frames 102 on the left, and another strip plate 103 is provided on the top of the two first frames 102 on the right, and a first lead screw 104 and a vertical guide rod 161 are provided between the first platform 101 on the left and the strip plate 103, and two vertical guide rods 161 are provided between the first platform 101 on the right and the strip plate 103, and a bevel gear transmission box 105 is provided on the upper surface of the strip plate 103 on the right, and the first lead screw 104 is located at the top of the upper surface of the strip plate 103 and the bevel gear transmission box 105. 5, the input end of the bevel gear transmission box 105 is connected to the center position of the inner side surface of the first turntable 106, and a first turntable handle 107 is provided at the edge position of the outer side surface of the first turntable 106. A movable frame 108 is arranged in the area between the two strip plates 103, and a threaded hole and three guide holes are provided on the movable frame 108. The threaded hole is threadedly connected to the first screw 104, and the guide hole is socketed with the vertical guide rod 161. A second screw 109 is provided on the movable frame 108 for horizontal rotation, and a second turntable 110 is provided on the part of one end of the second screw 109 extending out of the movable frame 108, and a second turntable handle 111 is provided at the edge position of the outer side surface of the second turntable 110.

[0035] like Figures 1 to 18 As shown, in this embodiment, a pair of parallel partitions 112 are provided on the upper surface of the movable frame 108, a guide bar 113 is provided in the middle of the outer side of the partition 112, a first support plate 114 is provided on the rear upper outer surface of the partition 112, a hydraulic cylinder 115 is provided on the upper surface of the first support plate 114, a retractable hydraulic push rod 116 is provided on the left side of the hydraulic cylinder 115, a first clamping plate 117 is provided on the left end of the hydraulic push rod 116, a flap 118 is provided on the front side of the first clamping plate 117 through a first rotating shaft 120, and the flap 118 is provided 8 is vertically fixed with a second clamping plate 119 on the outer surface of the end portion, and an auxiliary vertical plate 121 is provided at the middle position of the rear end surface of the partition 112, and a T-shaped guide groove is provided on the auxiliary vertical plate 121, and a strip slider 122 is slidingly provided in the T-shaped guide groove, and a first motor 124 is provided on the outer surface of one end of the strip slider 122 close to the first rotating shaft 120, and a limiting plate 123 is provided on the outer surface of one end of the strip slider 122 away from the first rotating shaft 120, and the bottom of the first rotating shaft 120 extends vertically downward and is connected to the output end of the first motor 124.

[0036] like Figures 1 to 18As shown, in this embodiment, a movable slider 126 is slidably provided on the guide bar 113, and an electromagnetic lock 125 is provided between the guide bar 113 and the movable slider 126 for locking the movable slider 126 from moving relative to the guide bar 113. A first connecting rod 128 is provided at the bottom of the movable slider 126, and a support 129 is provided at the rear end of the first connecting rod 128. A rotating rod 131 is provided at the center position of the upper surface of the support 129. A carton pushing plate 132 is fixedly provided on the outer side of the upper section of the rotating rod 131, and a handle 133 is provided on the outer side of the carton pushing plate 132. The rod body portion of the rotating rod 131 located between the support 129 and the carton pushing plate 132 is sleeved with a first spring 130;

[0037] A door frame 134 is further provided on the upper rear surface of the movable frame 108 , and the support 129 is located between the partition 112 and the corresponding door frame 134 .

[0038] like Figures 1 to 18 As shown, in this embodiment, the top of the portal frame 134 is sleeved with two symmetrically arranged first sliding sleeves 135, and the front side surface of the first sliding sleeve 135 is fitted with a first adjustment plate 137, and a vertically arranged first strip mounting hole is opened on the first adjustment plate 137, and a first adjusting screw 138 for locking is arranged in the first strip mounting hole, and a top pressing plate 136 arranged obliquely toward the front and upper side is provided at the bottom of the first adjusting plate 137, and a first adjusting seat 139 is fixedly provided on the top surface of the first sliding sleeve 135, and a first vertical threaded hole is opened on the first adjusting seat 139, and a second vertical threaded hole is opened on the top surface of the first sliding sleeve 135 below the first adjusting seat 139, and the second adjusting screw 140 is screwed into the first vertical threaded hole and the second vertical threaded hole in sequence from top to bottom until they abut against the corresponding top surface of the portal frame 134;

[0039] The part of the portal frame 134 located between the two first sliding sleeves 135 is sleeved on the second sliding sleeve 141, and the front side of the second sliding sleeve 141 is fitted with a second adjustment plate 143, and the second adjustment plate 143 is provided with a vertically arranged second strip mounting hole, and a third adjusting screw 144 for locking is provided in the second strip mounting hole, and a positioning cone 142 is provided at the bottom of the second adjusting plate 143, and a second adjusting seat 145 is fixedly provided on the top surface of the second sliding sleeve 141, and a third vertical threaded hole is provided on the second adjusting seat 145, and a fourth vertical threaded hole is provided on the top surface of the second sliding sleeve 141 below the second adjusting seat 145, and the fourth adjusting screw 146 is screwed into the third vertical threaded hole and the fourth vertical threaded hole in sequence from top to bottom until it abuts against the corresponding top surface of the portal frame 134.

[0040] like Figures 1 to 18 As shown, in this embodiment, the movable frame 108 is provided with a pair of transmission structures on the upper surface of the inner side of the partition 112, each of the transmission structures includes two inner support plates 147 and outer support plates 148 arranged in parallel, the bottom of the inner support plate 147 and the bottom of the outer support plate 148 are both threadedly sleeved on the outside of the second screw 109 through a support seat 159, and the front and rear ends between the inner support plate 147 and the outer support plate 148 are rotatably provided with a first rotating shaft 149, the outer sleeve of the first rotating shaft 149 is provided with a roller 150, and the outer sides of the two rollers 150 are connected by a first belt 1 60 connection, a first hydraulic telescopic rod 157 and a second hydraulic telescopic rod 158 are provided on the inner side surface of the rear end of the inner support plate 147, a transition ring 152 is fixedly provided on the inner side surface of the inner support plate 147, the transition ring 152 is rotatably fitted with the inner side surface of the head end of the base plate 151, a first transition hole is opened at the center position of the transition ring 152, and a second transition hole is opened on the side surface of the head end of the base plate 151, one end of the first rotating shaft 149 is rotatably sleeved through the first transition hole and the second transition hole in sequence and extends out of the outer side surface of the base plate 151, and a ratchet 153 is fixedly sleeved through the shaft end retaining ring 154,

[0041] A pawl 155 is provided on the middle outer side surface of the base plate 151 for rotation via a second rotating shaft 156 . The telescopic end of the first hydraulic telescopic rod 157 is hinged to the outer side surface of the tail end of the base plate 151 , and the telescopic end of the second hydraulic telescopic rod 158 is hinged to the middle outer side surface of the pawl 155 .

[0042] like Figures 1 to 18As shown, in this embodiment, the carton unfolding structure includes a cross bar 201, a side panel 202 is provided on the left side of the cross bar 201, a back panel 203 is provided at the rear end of the side panel 202 located behind the cross bar 201, a door and window 204 is provided on the upper side of the back panel 203, a first strip support 205 is provided on the right front side of the middle part of the side panel 202, a second strip support 206 is provided on the right rear side of the middle part of the side panel 202, two rows of second guide rods 207 arranged in parallel are provided between the first strip support 205 and the second strip support 206, and the second guide rods 207 are provided in parallel. A first guide rail slider 208 with a locking function is provided for sliding, and a support arm 221 arranged parallel to the cross bar 201 is provided on the top surface of the first guide rail slider 208 with a locking function, and a vertical rod 224 is provided at the right end of the support arm 221, and a third slider 225 is provided at the bottom of the vertical rod 224, and the third slider 225 is slidably sleeved on a fourth guide rod 226 connected between the cross bar 201 and the back plate 203, and a fourth support 222 is provided on the front side of the support arm 221, and an electromagnetic suction cup 223 is provided at the end of the fourth support 222, and the back plate 203 is provided. A third strip support 209 is provided on the front side surface, two rows of third guide rods 210 arranged in parallel are provided between the second strip support 206 and the third strip support 209, the third guide rod 210 is slidably provided with a second guide rail slider 211 with a locking function, the top front side surface of the second guide rail slider 211 with a locking function is provided with a carton guide rod 212, the end of the carton guide rod 212 is provided with an arc-shaped guide rod 213, the middle and lower front side surface of the second guide rail slider 211 with a locking function is provided with a first support plate 214, and the right side surface of the end of the first support plate 214 is provided with a second A mounting plate 215, a rotating shaft transition hole is opened on the first mounting plate 215, a third rotating shaft 218 is sleeved in the rotating shaft transition hole, a first rotating arm 219 is provided at one end of the third rotating shaft 218 located on the front side of the first mounting plate 215, a first flap 220 is provided at the end of the first rotating arm 219, a first swing arm 217 is fixedly provided at one end of the third rotating shaft 218 located on the rear side of the first mounting plate 215, a third hydraulic telescopic rod 216 is provided on the rear side surface of the first mounting plate 215, and the telescopic end of the third hydraulic telescopic rod 216 is hinged to the end of the first swing arm 217.

[0043] like Figures 1 to 18As shown, in this embodiment, the bottom flanging structure of the carton includes a longitudinal connecting rod 227 connected between the cross bar 201 and the back plate 203, and the longitudinal connecting rod 227 is located between the side plate 202 and the fourth guide rod 226, and a mounting plate 228 is fixedly provided in the middle of the longitudinal connecting rod 227. The upper surface of the mounting plate 228 is provided with two groups of rotating shaft seats 229 arranged along the front and rear side directions. A fourth rotating shaft 230 is provided between each group of rotating shaft seats 229 through a bearing, and a second rotating arm 231 is fixedly provided in the middle position of each fourth rotating shaft 230. The end of the second rotating arm 231 is provided with The flip head 127, the fourth rotating shaft 230 arranged on the front side is located on the right side of the second rotating arm 231, and the external fixed sleeve is provided with a driving gear 232. The fourth rotating shaft 230 arranged on the rear side is located on the right side of the second rotating arm 231, and the external fixed sleeve is provided with a driven gear 233. The driving gear 232 is engaged with the driven gear 233. One end of the fourth rotating shaft 230 arranged on the front side extends to the left side of the corresponding rotating shaft seat 229, and is fixedly provided with a second swing arm 234. The inner side surface of the cross bar 201 is provided with a fourth hydraulic telescopic rod 235, and the telescopic end of the fourth hydraulic telescopic rod 235 is hingedly connected to the end of the second swing arm 234.

[0044] like Figures 1 to 18As shown, in this embodiment, the sealing glue support structure includes a support frame 301, and a second mounting plate 302 is provided on the support frame 301. The upper surface of the second mounting plate 302 is provided with a mounting window 303, and the sealing glue structure is placed in the mounting window 303. A mounting notch 304 is provided at the left edge of the second mounting plate 302, and a pair of sealing glue limiting plates are provided on the bottom surface below the front and rear edges of the second mounting plate 302 on the front and rear sides of the mounting window 303. The ends of the sealing glue limiting plates are provided with limiting folded edges 313, and a transition shaft is rotatably provided between the left ends of the two sealing glue limiting plates. The outer sleeve of the transition shaft is provided with a first rotating cylinder 306, and the outer fixed sleeve of the first rotating cylinder 306 in the area where the mounting notch 304 is located is provided with a second flap 307, and the outer side surface of the left end of the sealing glue limiting plate arranged on the front side is provided with a second electric Machine 305, the output end of the second motor 305 is connected to the transition shaft, and a strip bottom plate 309 is provided on the front and rear edges of the second mounting plate 302, and a strip top plate 308 arranged in parallel is provided above each of the strip bottom plates 309 through a plurality of support columns, and a fifth rotating shaft 312 is rotatably provided on the left and right ends between the strip top plate 308 and the strip bottom plate 309, and the part of the fifth rotating shaft 312 located between the strip top plate 308 and the strip bottom plate 309 is provided with a roller, and a second belt 310 is provided between the two rollers, and a guide channel for the carton is formed between the two second belts 310, and a third motor 311 is provided on the bottom surface of the left side of the strip bottom plate 309, and the output end of the third motor 311 is connected to the end of the fifth rotating shaft 312 extending downward from the strip bottom plate 309.

[0045] like Figures 1 to 18As shown, in this embodiment, the sealing structure includes a first vertical plate 401, a second support plate 402 is provided at the bottom middle position of the first vertical plate 401, a support rod 403 is provided at the end of the second support plate 402, the outer rotation sleeve of the support rod 403 is provided with a second rotating drum 404, the end of the support rod 403 located in front of the second rotating drum 404 is provided with a baffle 405, the outer sleeve of the second rotating drum 404 is provided with a film 429, and the front side of the first vertical plate 401 is respectively provided with a second vertical plate 406 and a first vertical plate 407 in parallel through a plurality of connecting rods. There are three vertical plates 407, the second vertical plate 406 is located on the right side of the third vertical plate 407, a gap for tape winding operation is formed between the second vertical plate 406 and the third vertical plate 407, a transition plate 411 is provided on the top surface of the third vertical plate 407, the first vertical plate 401 is located on the inner side of the gap for tape winding operation, and a first roller 408, a second roller 409 and a third roller 410 are rotatably provided, the first roller 408 is located on the lower left side of the second roller 409, and the third roller 410 is located on the upper left side or upper side of the second roller 409.

[0046] A third rotating drum 412 and a fourth rotating drum 417 are rotatably arranged between the first vertical plate 401 and the second vertical plate 406. The third rotating drum 412 is located on the left side of the fourth rotating drum 417. The third rotating drum 412 is fixedly arranged in the middle of the first rotating arm 413. A first supporting arm 414 is arranged at one end of the first rotating arm 413. The end of the first supporting arm 414 extends upward from the area between the first vertical plate 401 and the second vertical plate 406 and is rotatably arranged with a first roller 415. The tape 430 of the film 429 is passed around the second roller 406 in sequence. 9. The first roller 408 and the third roller 410 are bonded to the left side of the first roller 415. The other end of the first rotary arm 413 is hinged to one end of the second connecting rod 416. The fourth rotating drum 417 is fixedly arranged at the middle and lower part of the second rotary arm 418. One end of the second rotary arm 418 extends out of the area between the first vertical plate 401 and the second vertical plate 406, and is rotatably provided with a second roller 420. The other end of the second rotary arm 418 is provided with a first connecting rod 419. The middle part of the second rotary arm 418 is hinged to the other end of the second connecting rod 416. A sixth rotating shaft 426 is rotatably provided between the first vertical plate 401 and the second vertical plate 406, and the sixth rotating shaft 426 is located between the third rotating drum 412 and the fourth rotating drum 417. The sixth rotating shaft 426 is rotatably sleeved on the middle and lower part of the third rotating arm 425. One end of the third rotating arm 425 extends out of the area between the first vertical plate 401 and the second vertical plate 406 and is provided with a cutter 428. The outer side of the third rotating arm 425 is slidably provided with an adjustment bar 431 through a fifth adjusting screw 432 and can be locked. The other end of the third rotating arm 425 A fourth connecting rod 427 is provided at one end, and a second connecting rod 421 and a third connecting rod 422 are fixedly provided between the first vertical plate 401 and the second vertical plate 406. The second connecting rod 421 and the third connecting rod 422 are both located between the sixth rotating shaft 426 and the fourth rotating drum 417, and the second connecting rod 421 is located above the third connecting rod 422. A second spring 423 is provided between the second connecting rod 421 and the fourth connecting rod 427, and a third spring 424 is provided between the third connecting rod 422 and the first connecting rod 419.

[0047] Working principle:

[0048] Pull the handle 133 so that the handle 133 moves back toward the front side, and the carton that has not been unfolded and is in a three-dimensional state is placed on the first belt 160. Then the carton pushing plate 132 blocks the carton from the back side, and the top of the carton is pressed down by the top pressure plate 136. At the same time, the positioning cone 142 is stuck in the gap between the two adjacent flanges of the carton. Here, the hydraulic push rod 116 is shortened, and the first clamping plate 117 moves toward the side of the hydraulic cylinder 115, and then the first motor 124 is driven to make the second clamping plate 119 block the carton at the front side.

[0049] The first guide rail slider 208 with a locking function is started, so that the support arm 221 moves forward, so that the electromagnetic suction cup 223 sucks the carton, and at the same time the second hydraulic telescopic rod 158 is started so that the pawl 155 pushes the ratchet 153 to rotate a fixed distance, thereby causing the first rotating shaft 149 and the roller 150 to rotate a fixed angle, so that the first belt 160 moves a fixed distance, and this distance just allows a carton to be moved away from the first belt 160. At the same time, the second guide rail slider 211 with a locking function moves toward the left until the arc-shaped guide rod 213 is in the guide position. The carton is guided to move backward and unfold into a three-dimensional state, and at the same time, the first guide rail slider 208 with a locking function is driven again to make the support arm 221 move toward the rear side, and cooperate with the action of the arc-shaped guide rod 213 to make the carton move backward and unfold into a three-dimensional state. At the same time, the hydraulic push rod 116 is extended and the first clamping plate 117 is pressed against the side of the next carton that has not been unfolded into a three-dimensional state, and the first motor 124 is driven to rotate the flap 118, so that the flap 118 and the second clamping plate 119 avoid the carton that is sucked and moved out, and at the same time, the strip slider 122 moves to the right synchronously. Then the fourth hydraulic telescopic rod 235 located below the three-dimensional carton is started, causing the two second rotating arms 231 and their ends to swing upward in a closing trajectory, causing the front and rear flanges of the bottom of the carton to flip and close. At the same time, the third hydraulic telescopic rod 216 and the second motor 305 are started, causing the first flap 220 and the second flap 307 to flip upward in a closing motion, causing the left and right flanges of the bottom of the carton to flip and close. Then the second guide rail slider 211 with a locking function is started again, and the carton guide rod 212 pushes the three-dimensional carton through the upper left surface of the second mounting plate 302 to move between the two second belts 310.

[0050] The carton continues to move toward the right. Under the action of the carton's own weight, the carton presses down the first roller 415, causing the first roller 415 to flip and move downward toward the right. At the same time, the first rotary arm 413 rotates, thereby pulling the second connecting rod 416 to move toward the left, thereby pulling the second roller 420 to flip and move downward toward the left. Then the carton presses down the adjustment bar 431, causing the adjustment bar 431 and the cutter 428 to flip and move downward toward the right. During this process, the second spring 423 and the third spring 424 are in a tensioned state. In this state, after the carton passes through the second roller 420, due to the action of the third spring 424, the second roller 420 will continue to fit on the side of the carton and continue to drive the tape 430 to seal the left side of the carton. Under the release of the elastic force, the cutter 428 and the second roller 420 move up quickly, and at the same time, the cutter 428 acts on the tape 430 and cuts it (the projection of the tape 430 in the top view is located on the cutter 428 and does not intersect with the adjustment strip 431), completing the entire carton unfolding and bottom sealing process.

[0051] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A carton unfolding device, characterized by: It includes a carton feeding structure, a carton unfolding structure, a carton bottom flanging structure, a glue sealing support structure and a glue sealing structure; the carton feeding structure is arranged in front of the carton unfolding structure, the carton bottom flanging structure is arranged below the carton unfolding structure, the glue sealing support structure is arranged on the right side of the carton unfolding structure, and the glue sealing structure is assembled on the glue sealing support structure.

2. A carton unfolding device according to claim 1, characterized in that: The carton feeding structure comprises a first platform (101), wherein four first frames (102) are provided on the upper surface of the first platform (101), a strip plate (103) is provided on the top of the two first frames (102) on the left side, and another strip plate (103) is provided on the top of the two first frames (102) on the right side, a first lead screw (104) and a vertical guide rod (161) are provided between the first platform (101) on the left side and the strip plate (103), two vertical guide rods (161) are provided on the right side, a bevel gear transmission box (105) is provided on the right side strip plate (103) to connect the first lead screw (104) and the first turntable (106), a movable frame (108) is provided between the two strip plates (103) and is connected to the first lead screw (104) and the vertical guide rod (161) through a threaded hole and a guide hole, and a second lead screw (109) and a second turntable (110) are rotatably provided on the movable frame (108).

3. A carton unfolding device according to claim 2, characterized in that: The movable frame (108) is provided with a parallel partition (112), a guide bar (113) is provided on the outer side of the partition (112), a first support plate (114) and a hydraulic cylinder (115) are provided on the rear side, a hydraulic push rod (116) is connected to the first clamping plate (117), and a flap (118) and a second clamping plate (119) are provided on the front side of the first clamping plate (117) through a first rotating shaft (120); a strip-shaped slider (122) is provided in the T-shaped guide groove of the auxiliary vertical plate (121) at the rear end of the partition (112) and is connected to a first motor (124) to drive the first rotating shaft (120).

4. A carton unfolding device according to claim 3, characterized in that: A movable slider (126) is slidably provided on the guide bar (113), an electromagnetic lock (125) is provided between the movable slider (126) and the guide bar (113), the movable slider (126) is connected to a support (129) through a first connecting rod (128), a rotating rod (131) on the support (129) is provided with a carton pushing plate (132) and a first spring (130); a door-shaped frame (134) is provided on the rear side of the movable frame (108), and the support (129) is located between the partition (112) and the door-shaped frame (134).

5. The carton unfolding device according to claim 4, characterized in that: A symmetrical first sliding sleeve (135) and a second sliding sleeve (141) are sleeved on the top of the door frame (134); the first sliding sleeve (135) is connected to the first adjustment plate (137) and a top pressure plate (136); the second sliding sleeve (141) is connected to the second adjustment plate (143) and a positioning cone (142); and both are fixed by adjusting screws.

6. The carton unfolding device according to claim 5, characterized in that: A transmission structure is provided on the inner side of the movable frame (108), including an inner support plate (147) and an outer support plate (148) connected to the second screw (109) through a support seat (159), a first rotating shaft (149) and a roller (150) are rotatably provided therebetween and connected by a first belt (160), a first and a second hydraulic telescopic rods (157, 158) are provided at the rear end of the inner support plate (147), and the first rotating shaft (149) is connected to a ratchet (153) and driven by a pawl (155).

7. The carton unfolding device according to claim 6, characterized in that: The carton unfolding structure comprises a cross bar (201), a side plate (202) and a back plate (203); the side plate (202) is provided with a strip support connected to the second and third guide rods (207, 210); the first and second guide rail sliders (208, 211) with locking functions are slidably provided thereon, and are respectively connected to a support arm (221) with an electromagnetic suction cup (223) and a carton guide rod (212) with an arc-shaped guide rod (213); the second guide rail slider (211) drives the first flap (220) through a third hydraulic telescopic rod (216).

8. The carton unfolding device according to claim 7, characterized in that: In the carton bottom flanging structure, a longitudinal connecting rod (227) between a cross bar (201) and a back plate (203) is connected to a mounting plate (228), a fourth rotating shaft (230) is provided on a rotating shaft seat (229) via a bearing, the fourth rotating shaft (230) is provided with a second rotating arm (231) and a flanging head (127), the front fourth rotating shaft (230) is connected to a driving gear (232) and meshed with a rear driven gear (233), and the front fourth rotating shaft (230) is hinged to a fourth hydraulic telescopic rod (235) on the cross bar (201) via a second swing arm (234).

9. The carton unfolding device according to claim 8, characterized in that: The glue sealing support structure comprises a support frame (301) and a second mounting plate (302), wherein the second mounting plate (302) is provided with a mounting window (303) and a notch (304), a glue sealing limit plate is provided below the window, a limit folding edge (313) is provided at the end thereof, a transition rotating shaft is provided at the left end to cover the first rotating drum (306) with a second flap (307), and is driven by a second motor (305); a strip bottom plate (309) and a top plate (308) are provided at the edge of the second mounting plate (302), a fifth rotating shaft (312) and a roller are provided to rotate therebetween, a carton guide channel is formed by a second belt (310), and the third motor (311) drives the fifth rotating shaft (312).

10. The carton unfolding device according to claim 9, characterized in that: The sealing structure comprises a first vertical plate (401), the bottom of which is connected to a support rod (403) through a second support plate (402) to cover a second rotating drum (404) to hold a film roll (429); a second vertical plate (406) and a third vertical plate (407) are arranged parallel to the front side of the first vertical plate (401) to form a gap, a plurality of rollers are rotatably arranged inside, a third and fourth rotating drums (412, 417) and a sixth rotating shaft (426) are rotatably arranged between the first and second vertical plates (401, 406), and the sixth rotating shaft (426) is provided with a third rotary arm (425) with a cutter (428), and each component is connected by a connecting rod and a spring.

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