A finished product carton conveying and stacking mechanism for a production line

Abstract

The present invention discloses a conveying and stacking mechanism for finished product cartons on a production line, belonging to the technical field of carton production, including a folding mechanism and a front conveying mechanism installed on one side of the folding mechanism, and a rear conveying mechanism is assembled on one side of the front conveying mechanism; through the provided rear conveying mechanism and the stacking unit, the efficient connection and stable processing of the carton conveying and stacking process are realized. When the folding mechanism completes the folding of the carton, the folded and formed carton is immediately and smoothly conveyed by the front conveying mechanism to the conveying unit. During this process, the telescopic restraint belt applies a pressing force to the carton, effectively preventing it from unfolding by itself during transportation. At the same time, the firm fixation at both ends of the belt body ensures the continuity and reliability of the pressing effect. Then, stacking is carried out through the stacking unit. The entire stacking process is repeated continuously, not only ensuring the stable pressing of the carton during transportation, but also avoiding the risk of the stacked cartons tipping due to the center of gravity deviation through the overall vertical lifting method.

Description

Technical Field

[0001] The present invention relates to the technical field of carton production, and in particular to a conveying and stacking mechanism for finished carton products on a production line. Background Art

[0002] As an indispensable part of modern logistics, cartons bear the important responsibility of containing, protecting products and beautifying them. Commonly used cartons are three-layer and five-layer, and seven-layer is less used. Each layer is divided into lining paper, corrugated paper, core paper and face paper. The lining and face paper are made of tea board paper and kraft paper, and the core paper is corrugated paper. The color and feel of each kind of paper are different, and the paper produced by different manufacturers is also different. According to the different materials, there are corrugated boxes, single-layer cardboard boxes, etc., with various specifications and models.

[0003] The process for producing cartons is also relatively mature, that is, most of them are produced automatically on assembly lines. After production, the cartons are folded into sheets by a folding mechanism, and then moved to the stacking mechanism through a conveying mechanism for stacking, so as to save space and facilitate subsequent transportation and storage.

[0004] In the process of cartons being transported to the stacking mechanism through the conveying mechanism for stacking, in order to prevent the cartons from unfolding by themselves during stacking, the traditional method often adopts placing the cartons to be stacked under the bottom layer of the stacked cartons. This method can effectively prevent the cartons from flattening by themselves during stacking. However, in actual operation, this stacking method requires constantly gently lifting one side of the stacked carton group so that new cartons can be inserted under the lifted gap. In this process, as the stacking height increases, even if a supporting component is provided on the top to support the top of the carton group, the carton group will still gradually tilt to one side due to the shift of the center of gravity. Finally, after reaching a certain height, it will unexpectedly tip over, seriously interfering with the smooth conveying and stacking of subsequent cartons. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem that in actual operation, this stacking method requires constantly lifting one side of the stacked carton group gently so that new cartons can be inserted under the lifted gap. During this process, as the stacking height increases, even if a supporting component is provided on the top to support the top of the carton group, the carton group will still gradually tilt to one side due to the offset of the center of gravity. Finally, after reaching a certain height, unpredictable tipping occurs, seriously interfering with the smooth transportation and stacking of subsequent cartons. A production line finished product carton conveying and stacking mechanism is proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A finished product carton conveying and stacking mechanism for a production line, comprising a folding mechanism and a front conveying mechanism installed on one side of the folding mechanism. A rear conveying mechanism is assembled on one side of the front conveying mechanism, a stacking unit is assembled on the rear conveying mechanism, and a pushing unit is assembled on the rear conveying mechanism near the stacking unit;

[0008] The rear conveying mechanism includes a conveying unit, and a telescopic limiting belt is jointly lapped on the front conveying mechanism and the conveying unit;

[0009] The stacking unit includes two mounting frames. One end of one of the mounting frames is fixed with a connecting seat, a first telescopic connecting rod is rotatably connected to the connecting seat, one end of the other mounting frame is fixed with a vertical holding pipe, a vertical lifting unit is assembled in the vertical holding pipe, both ends of the first telescopic connecting rod are connected to the vertical lifting unit, and a power unit is assembled on the other mounting frame;

[0010] When the conveying unit operates, it can drive the power unit to operate. The vertical lifting unit first moves horizontally forward under the drive of the power unit, and then vertically lifts the carton conveyed onto the pushing unit. When the newly conveyed carton on the rear conveying mechanism enters the pushing unit, the vertical lifting unit moves backward until it does not contact the carton, and then moves downward to a position lower than the lower surface of the lowermost carton. At this time, the above operation is repeated to stack the continuously conveyed cartons.

[0011] As a further description of the above technical solution:

[0012] The conveying unit includes a frame, a plurality of roller shafts are rotatably connected to the frame, a conveyor belt is assembled on the roller shafts, a pulley is fixed to one end of the roller shaft passing through the frame, a synchronous belt is assembled on the pulley, a mounting seat is fixed on one side of the frame, a motor is fixed on the mounting seat, and the output end of the motor is connected to one of the pulleys.

[0013] As a further description of the above technical solution:

[0014] The pushing unit includes a mounting plate, a plurality of vertical rods are fixed on the frame, the tops of the plurality of vertical rods are fixedly connected together to form the mounting plate, a plurality of sleeves are fixed on the lower surface of the mounting plate, a square rod is inserted into the sleeve, a first spring is fixed to the top of the square rod, the top of the first spring is fixed to the inner top wall of the sleeve, and the bottoms of the plurality of square rods are jointly fixed with a pressing plate;

[0015] A cross plate is fixedly installed between the inner sides of two of the vertical rods. An electro-hydraulic push rod is assembled on the cross plate. One end of the piston rod of the electro-hydraulic push rod is fixedly provided with a push plate for pushing the stacked cartons to one side. A pull rod is fixedly installed on one side of the other two vertical rods. One ends of the two pull rods are fixedly provided with a bundling table, and one end of the bundling table is fixedly installed on the frame.

[0016] As a further description of the above technical solution:

[0017] The power unit includes an erection rod fixedly installed on another mounting frame. A shaft rod is rotatably connected inside the erection rod. One end of the shaft rod is fixedly provided with an eccentric wheel. One ends of the other end of the shaft rod and one of the belt pulleys are both fixedly provided with pulley wheels, and a transmission belt is meshed between the two pulley wheels.

[0018] As a further description of the above technical solution:

[0019] The vertical lifting unit includes a vertical moving rod inserted into a vertical holding pipe. A sliding seat is fixedly installed at the bottom end of the vertical moving rod. A transverse telescopic moving member is slidably assembled inside the sliding seat;

[0020] A holding member adapted to the eccentric wheel is fixedly installed at the top end of the vertical moving rod. The eccentric wheel is rotatably connected inside the holding member. One end of the eccentric wheel is fixedly provided with a connecting disk. A telescopic cam member is assembled on the connecting disk. One end of the telescopic cam member is rotatably connected with the top end of a second telescopic connecting rod, and the other end of the second telescopic connecting rod is rotatably connected with the top end of a first telescopic connecting rod;

[0021] One end of the transverse telescopic moving member is fixedly provided with a rotating seat. A third telescopic connecting rod is rotatably connected inside the rotating seat. The other end of the third telescopic connecting rod is rotatably connected with the bottom end of the first telescopic connecting rod.

[0022] As a further description of the above technical solution:

[0023] A cross bar is fixedly assembled between the inner sides of two of the vertical rods. An auxiliary frame is fixedly installed inside the cross bar. The bottom of the auxiliary frame is lapped on the upper surface of the frame, and the upper surface of the auxiliary frame is on the same horizontal plane as the upper surface of the conveyor belt;

[0024] A limiting sliding groove is opened inside the auxiliary frame. A limiting sliding block adapted to the limiting sliding groove is fixedly installed on one side of the pressing plate. The pressing plate is slidably assembled on the auxiliary frame through the limiting sliding block. An extending groove corresponding to the transverse telescopic moving member is opened on the inner bottom wall of the auxiliary frame.

[0025] As a further description of the above technical solution:

[0026] The telescopic restraint belt includes a first belt body. One end of the first belt body is connected to the folding mechanism. One end of the lateral telescopic moving member is fixed with a second belt body. One end of the second belt body is fixed with an extension belt. The other end of the first belt body is provided with a storage cavity adapted to the extension belt. The extension belt is inserted into the storage cavity. One end of the extension belt is fixed with a second spring. One end of the second spring is fixed to one side wall of the storage cavity. A long slot corresponding to the third telescopic link is provided on the second belt body.

[0027] As a further description of the above technical solution:

[0028] The lateral telescopic moving member includes a main moving member slidably assembled in a slide base. A slot is provided in the main moving member. An insertion member is inserted into the slot. A knob stud is threadedly penetrated through the lower surface of the main moving member. One end of the knob stud penetrating into the slot abuts against the insertion member, so that the insertion member is fixed in the main moving member after being pulled out.

[0029] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0030] Through the setting of the rear conveying mechanism and the stacking unit, the efficient connection and stable processing of the carton conveying and stacking process are realized. When the folding mechanism completes the folding of the carton, the folded and formed carton is immediately and smoothly conveyed by the front conveying mechanism to the conveying unit. During this process, the telescopic restraint belt exerts a pressing force on the carton, effectively preventing it from unfolding by itself during transportation. At the same time, the firm fixation at both ends of the belt body ensures the continuity and reliability of the pressing effect;

[0031] As the first carton reaches the preset position of the stacking unit, the power unit drives the lateral telescopic moving member. First, it moves horizontally towards the auxiliary frame, then rises vertically, and simultaneously lifts the pressing plate to create an unobstructed entry channel for the carton. Under the guidance of the conveying unit, the carton slides onto the supporting surface of the auxiliary frame. At this time, the lateral telescopic moving member retracts in a timely manner to avoid contacting the carton, and then moves down to a position lower than the lower surface of the bottommost carton. At the same time, the pressing plate assisted by the spring quickly resets, pushing the newly added carton tightly against the auxiliary frame to complete a stacking action;

[0032] The entire stacking process is repeated continuously, which not only ensures the stable pressing of the carton during transportation, but also avoids the risk of the stacked cartons tipping due to the center of gravity shift by the overall vertical lifting method, significantly improving the stacking efficiency and stability. Even as the stacking height of the cartons increases, the overall structure can remain stable, ensuring the normal transportation and stacking of subsequent cartons. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Shows a three-dimensional structural schematic diagram provided according to an embodiment of the present invention;

[0034] Figure 2 Shows a schematic structural diagram of a conveying unit provided according to an embodiment of the present invention;

[0035] Figure 3 Shows a schematic structural diagram of a pushing unit provided according to an embodiment of the present invention;

[0036] Figure 4 Shows a schematic structural diagram of an adjusted stacking unit provided according to an embodiment of the present invention;

[0037] Figure 5 Shows a schematic structural diagram of a telescopic restraint belt provided according to an embodiment of the present invention;

[0038] Figure 6 Shows a schematic diagram of Figure 3 the enlarged structure at position A in the present invention;

[0039] Figure 7 Shows a schematic diagram of Figure 5 the enlarged structure at position B in the present invention;

[0040] Figure 8 Shows a schematic structural diagram of a lateral telescopic moving member provided according to an embodiment of the present invention.

[0041] Legend description:

[0042] 10. Folding mechanism;

[0043] 20. Front conveying mechanism;

[0044] 30. Rear conveying mechanism; 31. Conveying unit; 311. Frame; 312. Roller shaft; 313. Belt pulley; 314. Timing belt; 315. Conveyor belt; 316. Motor; 32. Telescopic restraint belt; 321. First belt body; 322. Second belt body; 323. Extension belt;

[0045] 40. Stacking unit; 41. Mounting frame; 42. Connecting seat; 43. First telescopic link; 44. Vertical holding pipe; 45. Vertical lifting unit; 451. Vertical moving rod; 452. Slide seat; 453. Lateral telescopic moving member; 4531. Main moving member; 4532. Inserting member; 454. Holding member; 455. Connecting disk; 456. Telescopic cam member; 457. Second telescopic link; 458. Third telescopic link; 46. Power unit; 461. Erection rod; 462. Shaft rod; 463. Eccentric wheel; 464. Belt pulley; 465. Transmission belt;

[0046] 50. Pushing unit; 51. Mounting plate; 52. Vertical rod; 53. Sleeve; 54. Square rod; 55. First spring; 56. Pressing plate; 57. Electric hydraulic push rod; 58. Pushing plate; 59. Bundling table; 510. Auxiliary frame; 511. Insertion groove. Detailed implementation manner

[0047] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0048] As Figure 1 - Figure 8 shown, the present invention provides:

[0049] A conveying and stacking mechanism for finished product cartons on a production line, comprising a folding mechanism 10 and a front conveying mechanism 20 installed on one side of the folding mechanism 10. A rear conveying mechanism 30 is assembled on one side of the front conveying mechanism 20. A stacking unit 40 is assembled on the rear conveying mechanism 30. A pushing unit 50 is assembled on the rear conveying mechanism 30 on the side close to the stacking unit 40;

[0050] The rear conveying mechanism 30 includes a conveying unit 31. A telescopic limiting belt 32 is jointly lapped on the front conveying mechanism 20 and the conveying unit 31;

[0051] The stacking unit 40 includes two mounting frames 41. A connecting seat 42 is fixed at one end of one of the mounting frames 41. A first telescopic connecting rod 43 is rotatably connected to the connecting seat 42. A vertical holding pipe 44 is fixed at one end of the other mounting frame 41. A vertical lifting unit 45 is assembled in the vertical holding pipe 44. Both ends of the first telescopic connecting rod 43 are connected to the vertical lifting unit 45. A power unit 46 is assembled on the other mounting frame 41;

[0052] When the conveying unit 31 operates, it can drive the power unit 46 to operate. The vertical lifting unit 45 first moves horizontally forward under the drive of the power unit 46, and then vertically lifts the carton conveyed onto the pushing unit 50. When the newly conveyed carton on the rear conveying mechanism 30 enters the pushing unit 50, the vertical lifting unit 45 moves backward until it does not contact the carton, and then moves downward to a position lower than the lower surface of the lowermost carton. At this time, the above operations are repeated to stack the continuously conveyed cartons.

[0053] As Figure 1 and Figure 2As shown, the conveying unit 31 includes a frame 311. A plurality of roller shafts 312 are rotatably connected to the frame 311. A conveyor belt 315 is assembled on the roller shafts 312. One end of the roller shaft 312 passing through the frame 311 is fixed with a pulley 313. A timing belt 314 is assembled on the pulley 313. An installation seat is fixed on one side of the frame 311. A motor 316 is fixed on the installation seat. The output end of the motor 316 is connected to one of the pulleys 313.

[0054] Preferably, tension wheels are provided on both the upper and lower surfaces of the timing belt 314. One end of the tension wheel is rotatably connected to the frame 311. Through the arrangement of the tension wheels, the timing belt 314 and each pulley 313 can always maintain a meshing state.

[0055] As Figure 1 、 Figure 5 and Figure 7 shown, the telescopic restraint belt 32 includes a first belt body 321. One end of the first belt body 321 is connected to the folding mechanism 10. One end of the lateral telescopic moving member 453 is fixed with a second belt body 322. One end of the second belt body 322 is fixed with an extension belt 323. A retracting cavity adapted to the extension belt 323 is formed at the other end of the first belt body 321. The extension belt 323 is inserted into the retracting cavity. One end of the extension belt 323 is fixed with a second spring. One end of the second spring is fixed to one side wall of the receiving cavity. A long slot corresponding to the third telescopic link 458 is formed on the second belt body 322.

[0056] Through the telescopic design, the second belt body 322 can move together with the lateral telescopic moving member 453. When resetting, it is restored by the pulling force of the second spring.

[0057] As Figure 2 、 Figure 3 and Figure 4 shown, the power unit 46 includes a mounting rod 461 fixed to another mounting frame 41. A shaft rod 462 is rotatably connected inside the mounting rod 461. An eccentric wheel 463 is fixed to one end of the shaft rod 462. Belt pulleys 464 are fixed to the other end of the shaft rod 462 and one end of one of the pulleys 313 respectively. A transmission belt 465 is commonly engaged on the two belt pulleys 464.

[0058] When the conveying unit 31 operates, two of the pulleys 313 on both sides drive the belt pulleys 464 mounted on their surfaces to rotate, and drive the other belt pulley 464 to rotate through the transmission belt 465. Furthermore, the shaft rod 462 at the end of the belt pulley 464 drives the eccentric wheel 463 to rotate. After the eccentric wheel 463 rotates, it drives the vertical moving rod 451 to move vertically up and down in the vertical holding tube 44 through the holding member 454.

[0059] As Figure 4 andFigure 8 As shown, the vertical lifting unit 45 includes a vertical moving rod 451 inserted into the vertical holding tube 44. A sliding seat 452 is fixed to the bottom end of the vertical moving rod 451, and a horizontal telescopic moving member 453 is slidably assembled in the sliding seat 452;

[0060] A holding member 454 adapted to the eccentric wheel 463 is fixed to the top end of the vertical moving rod 451. The eccentric wheel 463 is rotatably connected within the holding member 454. A connecting disk 455 is fixed to one end of the eccentric wheel 463. A telescopic cam member 456 is assembled on the connecting disk 455. One end of the telescopic cam member 456 is rotatably connected to a second telescopic connecting rod 457, and the other end of the second telescopic connecting rod 457 is rotatably connected to the top end of the first telescopic connecting rod 43;

[0061] One end of the horizontal telescopic moving member 453 is fixed with a rotating seat, and a third telescopic connecting rod 458 is rotatably connected within the rotating seat. The other end of the third telescopic connecting rod 458 is rotatably connected to the bottom end of the first telescopic connecting rod 43;

[0062] When the eccentric wheel 463 rotates, the connecting disk 455 at its end rotates together, thereby causing the telescopic cam member 456 to rotate. Then, the first telescopic connecting rod 43 is driven to swing through the second telescopic connecting rod 457. During the swinging process, the horizontal telescopic moving member 453 is driven by the third telescopic connecting rod 458 to perform reciprocating movement in the horizontal direction. Cooperating with the vertical moving rod 451, the horizontal telescopic moving member 453 can perform reciprocating movement in the horizontal direction while performing up and down movement in the vertical direction, thereby continuously lifting and lowering the stacked carton group in the vertical direction, enabling the cartons to be stacked without tipping over.

[0063] As Figure 1 、 Figure 2 、 Figure 3 and Figure 8 shown, the horizontal telescopic moving member 453 includes a main moving member 4531 slidably assembled in the sliding seat 452. A slot is formed in the main moving member 4531, and an extending member 4532 is inserted into the slot. A knob stud is threadedly penetrated through the lower surface of the main moving member 4531, and the end of the knob stud penetrating into the slot abuts against the extending member 4532, so that the extending member 4532 is fixed within the main moving member 4531 after being pulled out;

[0064] After loosening the knob stud, the extending member 4532 can be pulled outwards, so that the part of the main moving member 4531 extending beyond the sliding seat 452 and the part where the extending member 4532 extends can be adapted to the width of the carton.

[0065] As Figure 1 、 Figure 2 、 Figure 3 and Figure 8As shown in the figure, the pushing unit 50 includes a mounting plate 51. A plurality of vertical rods 52 are fixed on the frame 311. The tops of the plurality of vertical rods 52 are fixedly connected together with the mounting plate 51. A plurality of sleeves 53 are fixed on the lower surface of the mounting plate 51. A square rod 54 is inserted into the sleeve 53. A first spring 55 is fixed at the top of the square rod 54. The top of the first spring 55 is fixed to the inner top wall of the sleeve 53. The bottoms of the plurality of square rods 54 are fixedly connected together with a pressing plate 56. A cross plate is fixedly assembled together on the inner sides of two of the vertical rods 52. An electro-hydraulic push rod 57 is assembled on the cross plate. One end of the piston rod of the electro-hydraulic push rod 57 is fixed with a push plate 58 for pushing the stacked cartons to one side. Tie rods are fixed on one side of the other two vertical rods 52. One ends of the two tie rods are fixedly connected together with a bundling table 59. One end of the bundling table 59 is fixed to the frame 311;

[0066] A cross bar is fixedly assembled together on the inner sides of two of the vertical rods 52. An auxiliary frame 510 is fixed on the inner side of the cross bar. The bottom of the auxiliary frame 510 is lapped on the upper surface of the frame 311. And the upper surface of the auxiliary frame 510 is on the same horizontal plane as the upper surface of the conveyor belt 315. A limiting chute is opened on the inner side of the auxiliary frame 510. A limiting slider adapted to the limiting chute is fixed on one side of the pressing plate 56. The pressing plate 56 is slidably assembled on the auxiliary frame 510 through the limiting slider. An insertion groove 511 corresponding to the transverse telescopic moving member 453 is opened on the inner bottom wall of the auxiliary frame 510. Ball beads are embedded on the contact surface between the auxiliary frame 510 and the carton;

[0067] When the cartons on the auxiliary frame 510 are stacked to a height where the lower surface of the pressing plate 56 is higher than the upper surface of the push plate 58, the conveying of the cartons is stopped at this time. Then the electro-hydraulic push rod 57 is started to drive the push plate 58 to move to one side, so as to push the stacked cartons onto the bundling table 59 for bundling and packing.

[0068] Specifically, when the finished product carton conveying and stacking mechanism of this production line is working / in use:

[0069] First of all, the cartons folded into sheets by the folding mechanism 10 are conveyed onto the conveying unit 31 through the front conveying mechanism 20. During the conveying process, the telescopic restraint belt 32 applies a pressing force to the cartons to prevent the cartons from unfolding by themselves during the conveying;

[0070] During the operation of the conveying unit 31, two of the rotating pulleys 313 on both sides drive the pulley 464 mounted on their surfaces to rotate, and drive another pulley 464 to rotate through the transmission belt 465. Furthermore, the shaft rod 462 at the end of the pulley 464 drives the eccentric wheel 463 to rotate. After the eccentric wheel 463 rotates, it drives the vertical moving rod 451 to move up and down in the vertical direction in the vertical holding tube 44 through the holding member 454. At the same time, the connecting disk 455 at the end of the eccentric wheel 463 rotates together, thereby causing the telescopic cam member 456 to rotate, and then driving the first telescopic link 43 to swing through the second telescopic link 457. During the swinging process, the horizontal telescopic moving member 453 is driven to reciprocate horizontally through the third telescopic link 458. In cooperation with the vertical moving rod 451, the horizontal telescopic moving member 453 can move up and down in the vertical direction while reciprocating horizontally in the horizontal direction;

[0071] When the first piece of cardboard box reaches the preset position of the stacking unit 40, the horizontal telescopic moving member 453 first moves horizontally into the insertion groove 511 on the auxiliary frame 510, then rises vertically, and simultaneously lifts the pressing plate 56 upward to create an unobstructed entry channel for the cardboard box. At this time, under the action of the conveying unit 31, the cardboard box slides onto the supporting surface of the auxiliary frame 510. After sliding in, the horizontal telescopic moving member 453 moves horizontally backward, and then moves down to a position lower than the lower surface of the bottommost cardboard box. At the same time, under the elastic force of the first spring 55, the pressing plate 56 quickly resets and presses against the cardboard box to complete a stacking action. During the next stacking, the horizontal telescopic moving member 453 moves horizontally into the insertion groove 511 on the auxiliary frame 510, and then lifts the stacked cardboard box and the pressing plate 56 when rising vertically. After the new cardboard box slides onto the supporting surface of the auxiliary frame 510, it moves horizontally backward and then moves down again to a position lower than the lower surface of the bottommost cardboard box;

[0072] This process repeats. When the cardboard boxes on the auxiliary frame 510 are stacked to a height where the lower surface of the pressing plate 56 is higher than the upper surface of the pushing plate 58, the conveyance of the cardboard boxes is stopped at this time, and then the electric hydraulic push rod 57 is started to drive the pushing plate 58 to move to one side, pushing the stacked cardboard boxes onto the bundling table 59 for subsequent bundling and packing operations. At this time, the pushing plate 58 is reset by the electric hydraulic push rod 57. It should be noted that during the pushing process, the top of the pushing plate 58 always presses against the pressing plate 56 to prevent it from resetting downward under the action of the first spring 55, ensuring that the pushing plate �8 can be smoothly reset backward after pushing out the cardboard boxes. After resetting, the pressing plate 56 is driven to reset downward under the elastic force of the first spring 55.

[0073] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A finished product carton conveying and stacking mechanism for a production line, comprising a folding mechanism (10) and a front conveying mechanism (20) installed on one side of the folding mechanism (10), characterized in that, One side of the front conveying mechanism (20) is equipped with a rear conveying mechanism (30). A stacking unit (40) is assembled on the rear conveying mechanism (30), and a pushing unit (50) is assembled on the rear conveying mechanism (30) near the stacking unit (40). The rear conveying mechanism (30) includes a conveying unit (31), and a telescopic limiting belt (32) is jointly lapped on the front conveying mechanism (20) and the conveying unit (31). The stacking unit (40) includes two mounting brackets (41). One end of one of the mounting brackets (41) is fixed with a connecting seat (42). A first telescopic connecting rod (43) is rotatably connected to the connecting seat (42). One end of the other mounting bracket (41) is fixed with a vertical holding pipe (44). A vertical lifting unit (45) is assembled in the vertical holding pipe (44). Both ends of the first telescopic connecting rod (43) are connected to the vertical lifting unit (45). A power unit (46) is assembled on the other mounting bracket (41). When the conveying unit (31) operates, it can drive the power unit (46) to rotate. The vertical lifting unit (45) first moves horizontally forward under the drive of the power unit (46), and then vertically lifts the cardboard box on the pushing unit (50). When a newly conveyed cardboard box on the rear conveying mechanism (30) enters the pushing unit (50), the vertical lifting unit (45) moves backward until it does not contact the cardboard box, and then moves downward to a position lower than the lower surface of the lowermost cardboard box. At this time, repeat the above operation to stack the continuously conveyed cardboard boxes.

2. The conveying and stacking mechanism for finished product cartons on a production line according to claim 1, characterized in that, The conveying unit (31) includes a frame (311). The frame (311) is rotatably connected with a plurality of roller shafts (312). A conveyor belt (315) is assembled on the roller shafts (312). One end of the roller shaft (312) passing through the frame (311) is fixed with a belt pulley (313). A timing belt (314) is assembled on the belt pulley (313). One side of the frame (311) is fixed with a mounting seat, and a motor (316) is fixed on the mounting seat. The output end of the motor (316) is connected to one of the belt pulleys (313).

3. The conveying and stacking mechanism for the finished product cartons on the production line according to claim 2, wherein, The pushing unit (50) includes a mounting plate (51). A plurality of vertical rods (52) are fixed on the frame (311). The tops of the plurality of vertical rods (52) are jointly fixedly connected with the mounting plate (51). A plurality of sleeves (53) are fixed on the lower surface of the mounting plate (51). A square rod (54) is inserted into the sleeve (53). A first spring (55) is fixed at the top of the square rod (54), and the top of the first spring (55) is fixed to the inner top wall of the sleeve (53). A pressing plate (56) is jointly fixed at the bottoms of the plurality of square rods (54). A cross plate is fixedly arranged inside two of the vertical rods (52) in common. An electric hydraulic push rod (57) is assembled on the cross plate. One end of the piston rod of the electric hydraulic push rod (57) is fixedly provided with a push plate (58) for pushing the stacked cartons to one side. One side of the other two vertical rods (52) is fixedly provided with a pull rod. One ends of the two pull rods are fixedly provided with a bundling table (59) in common. One end of the bundling table (59) is fixedly connected with the frame (311).

4. A finished product carton conveying and stacking mechanism for a production line according to claim 2, characterized in that, The power unit (46) includes an erection rod (461) fixedly arranged on another mounting frame (41). A shaft rod (462) is rotatably connected inside the erection rod (461). One end of the shaft rod (462) is fixedly provided with an eccentric wheel (463). One ends of the other end of the shaft rod (462) and one of the belt pulleys (313) are both fixedly provided with belt pulleys (464). A transmission belt (465) is meshed on the two belt pulleys (464) in common.

5. A finished product carton conveying and stacking mechanism for a production line according to claim 4, characterized in that, The vertical lifting unit (45) includes a vertical moving rod (451) inserted into a vertical holding pipe (44). A sliding seat (452) is fixedly arranged at the bottom end of the vertical moving rod (451). A transverse telescopic moving member (453) is slidably assembled inside the sliding seat (452). The top end of the vertical moving rod (451) is fixedly provided with a holding member (454) adapted to the eccentric wheel (463). The eccentric wheel (463) is rotatably connected inside the holding member (454). One end of the eccentric wheel (463) is fixedly provided with a connecting disc (455). A telescopic cam member (456) is assembled on the connecting disc (455). One end of the telescopic cam member (456) is rotatably connected with one end of a second telescopic connecting rod (457). The other end of the second telescopic connecting rod (457) is rotatably connected with the top end of the first telescopic connecting rod (43). One end of the transverse telescopic moving member (453) is fixedly provided with a rotating seat. A third telescopic connecting rod (458) is rotatably connected inside the rotating seat. The other end of the third telescopic connecting rod (458) is rotatably connected with the bottom end of the first telescopic connecting rod (43).

6. The conveying and stacking mechanism for finished product cartons on a production line according to claim 3, wherein, A cross bar is fixedly assembled inside two of the vertical rods (52) in common. An auxiliary frame (510) is fixedly arranged inside the cross bar. The bottom of the auxiliary frame (510) is lapped on the upper surface of the frame (311). And the upper surface of the auxiliary frame (510) is on the same horizontal plane as the upper surface of the conveyor belt (315). A limiting sliding groove is formed inside the auxiliary frame (510). One side of the pressing plate (56) is fixedly provided with a limiting sliding block adapted to the limiting sliding groove. The pressing plate (56) is slidably assembled on the auxiliary frame (510) through the limiting sliding block. A penetrating groove (511) corresponding to the transverse telescopic moving member (453) is formed on the inner bottom wall of the auxiliary frame (510).

7. A finished product carton conveying and stacking mechanism for a production line according to claim 5, characterized in that, The telescopic restraint belt (32) includes a first belt body (321). One end of the first belt body (321) is connected to the folding mechanism (10). A second belt body (322) is fixed to one end of the lateral telescopic moving member (453). An extension belt (323) is fixed to one end of the second belt body (322). A retracting cavity adapted to the extension belt (323) is formed at the other end of the first belt body (321). The extension belt (323) is inserted into the retracting cavity. A second spring is fixed to one end of the extension belt (323), and one end of the second spring is fixed to a side wall of the receiving cavity. A long slot corresponding to the third telescopic link (458) is formed in the second belt body (322).

8. A finished product carton conveying and stacking mechanism for a production line according to claim 5, characterized in that, The lateral telescopic moving member (453) includes a main moving member (4531) slidably assembled in a sliding seat (452). A slot is formed in the main moving member (4531), and an inserting member (4532) is inserted into the slot. A knob stud is threadedly penetrated through the lower surface of the main moving member (4531), and one end of the knob stud penetrating into the slot abuts against the inserting member (4532) so that the inserting member (4532) is fixed in the main moving member (4531) after being pulled out.

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