An adaptive bag conveying mechanism

Abstract

The present invention discloses an adaptive bag conveying mechanism, comprising a machine base, a bag delivery platform disposed on the machine base, a first conveyor belt and a first drive device for driving the first conveyor belt to rotate, a bag separation mechanism disposed on the bag delivery platform above the conveyor belt to deliver the topmost layer of packaging bags forward, and a bag blocking plate disposed at the front end of the bag delivery platform; the bag separation mechanism comprises a second conveyor belt and a second drive device for driving the second conveyor belt to rotate. The present invention allows packaging bags to be placed in batches on the bag delivery platform. The first drive device drives the first conveyor belt to rotate, slowly conveying the packaging bags forward. The second drive device drives the second conveyor belt to rotate, and the second conveyor belt quickly delivers the topmost layer of packaging bags forward, thereby automatically delivering and laying the packaging bags one by one, achieving a high degree of automation and bag laying efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging and filling, in particular to an adaptive bag conveying mechanism. Background Art

[0002] Packaging bags are commonly used containers for filling various materials. In the automatic filling production line, the packaging bags are clamped by a clamping device for filling, and the packaging bags clamped by the clamping device are transferred by a bag loading mechanism. The bag loading mechanism grabs the flat packaging bag on the platform, then flips the packaging bag 90 degrees and lifts it to keep it vertical, and then moves it to the clamping device for transfer. Since the height at which the bag loading mechanism grabs downward is fixed, it is impossible to grab a stack of packaging bags one by one. Therefore, this bag loading method requires the packaging bags to be laid flat on the platform one by one for bag loading. Workers need to spread the packaging bags one by one to the corresponding positions on the platform. The operation method is backward and the bag laying efficiency is low. Therefore, a device that automatically spreads the packaging bags one by one to the corresponding positions is needed. Summary of the Invention

[0003] The purpose of the present invention is to avoid the deficiencies of the prior art and provide an adaptive bag conveying mechanism, thereby effectively solving the deficiencies in the prior art.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an adaptive bag conveying mechanism, including a machine base, a bag feeding platform is provided on the machine base, a first conveyor belt and a first driving device for driving the first conveyor belt to rotate are provided on the bag feeding platform, a bag separating mechanism for delivering the topmost layer of packaging bags forward is provided on the upper side of the conveyor belt on the bag feeding platform, and a bag baffle is provided at the front end of the bag feeding platform; the bag separating mechanism includes a second conveyor belt and a second driving device for driving the second conveyor belt to rotate.

[0005] Furthermore, side baffles are provided on both sides of the first conveyor belt on the bag delivery platform, and a third driving device for driving the two side baffles to move toward each other is provided on the machine base.

[0006] Furthermore, a bracket is provided on the bag feeding platform, and a first strap that can be placed on the packaging bag is provided on the bracket between the two side baffles, and a driving shaft and a transmission shaft are provided at both ends of the first strap respectively, and the second conveyor belt is provided on the driving shaft and the transmission shaft, and the second driving device drives the second conveyor belt to rotate through the driving shaft, and a second strap is hingedly provided on the transmission shaft, and a third conveyor belt driven by the transmission shaft is provided on the second strap, and a limiting mechanism is provided on the first strap to prevent the second strap from continuously rotating downward.

[0007] Furthermore, the limiting mechanism includes a limiting column, and the second bridge plate is provided with a bridge block that can be placed on the upper side of the limiting column.

[0008] Furthermore, the first strap is hingedly arranged on the driving shaft, a shift block is arranged on the upper side of the first strap, a positioning plate is arranged on the bracket which can move forward and backward, a positioning groove is arranged on the positioning plate to cooperate with the shift block, and a block is arranged on the bracket to prevent the positioning plate from moving forward.

[0009] Furthermore, a shielding plate is provided on the positioning plate, and a shielding sensor is provided on the bracket in coordination with the shielding plate.

[0010] Furthermore, the first strap is provided with two groups between the two side baffles, namely a left strap and a right strap, the driving shaft cooperates with the left strap and the right strap to be divided into two coaxially separated left main shafts and right main shafts, and two coaxially separated left end shafts and a right transverse shaft are provided on the bracket parallel to the left main shaft, the left main shaft and the left end shaft are driven by a synchronous belt, the right transverse shaft and the right main shaft are driven by a synchronous belt, the left end shaft and the right transverse shaft are driven by a detachable coupling, the right strap is movably provided on the right main shaft, and a support rod is provided on the right side of the bracket to cooperate with the right strap.

[0011] Furthermore, the bracket is arranged on the bag delivery platform so as to be movable forward and backward, a slide rail is provided on the bag delivery platform to cooperate with the bracket, and a positioning piece is provided on the bracket to cooperate with the slide rail.

[0012] Furthermore, a bag-moving mechanism is provided on the front side of the bag-feeding platform, and the bag-moving mechanism includes a rotating shaft and a fourth driving device for driving the rotating shaft to rotate. A plurality of bag-moving wheels are provided on the rotating shaft, and a plurality of paddles are provided on the bag-moving wheels along the circumference.

[0013] Furthermore, a top plate is hingedly provided at the bag blocking plate, and a photoelectric sensor that can be blocked by the top plate is provided on the bag blocking plate.

[0014] The above technical solution of the present invention has the following beneficial effects: the present invention can place packaging bags in batches on the bag feeding platform, the first driving device drives the first conveyor belt to rotate, driving the packaging bags to be slowly transported forward, the second driving device drives the second conveyor belt to rotate, and the second conveyor belt quickly sends the topmost packaging bags forward, thereby realizing the effect of automatically sending out the packaging bags one by one and laying them flat, with a high degree of automation and bag laying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A perspective view of an embodiment of the present invention;

[0016] Figure 2 This is a three-dimensional diagram of the operation of the first conveyor belt in an embodiment of the present invention;

[0017] Figure 3 This is a three-dimensional diagram of the bag-splitting mechanism according to an embodiment of the present invention;

[0018] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0019] Figure 5 A three-dimensional diagram of the bag-splitting mechanism from another perspective according to an embodiment of the present invention;

[0020] Figure 6 This is a three-dimensional diagram of the transmission cooperation between the left and right main shafts according to an embodiment of the present invention;

[0021] Figure 7 It is a three-dimensional diagram of the bag-moving mechanism according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0023] In the description of the present invention, unless otherwise specified, “plurality” means two or more; the orientations or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “inside”, “outside”, “front end”, “rear end”, “head” and “tail” are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, 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 limiting the present invention.

[0024] like Figure 1-7 As shown, the adaptive bag conveying mechanism described in this embodiment includes a machine base 1, a bag feeding platform 2 is provided on the machine base 1, a first conveyor belt 3 and a first driving device 31 for driving the first conveyor belt 3 to rotate are provided on the bag feeding platform 2, a bag dividing mechanism 4 for sending the topmost packaging bag forward is provided on the upper side of the conveyor belt on the bag feeding platform 2, and a bag blocking plate 5 is provided at the front end of the bag feeding platform 2; the bag dividing mechanism 4 includes a second conveyor belt 41 and a second driving device 42 for driving the second conveyor belt 41 to rotate; the packaging bags can be placed in batches on the bag feeding platform 2 (the placement method is to stagger the packaging bags and place them on the bag feeding platform 2 at an angle, and the packaging bags can be arranged forward on the bag feeding platform 2. When the first driving device 31 is driven, the packaging bags can be placed forward on the bag feeding platform 2. When the device 31 passes through the first conveyor belt 3 and rotates, the packaging bags can be compactly sent to the bag-distributing mechanism 4 in sequence), the first driving device 31 drives the first conveyor belt 3 to rotate slowly, driving the packaging bags to be slowly transported forward, and the second driving device 42 drives the second conveyor belt 41 to rotate, and the second conveyor belt 41 quickly sends the packaging bags on the top layer forward (the second conveyor belt 41 sends the packaging bags on the top layer forward through friction), and after sending them out, the packaging bags reach the bag baffle 5, which realizes the effect of automatically sending the packaging bags out one by one and laying them flat; wherein the first driving device 31 is a servo motor, which can drive the shaft at one end of the conveyor belt to rotate through the synchronous belt, thereby driving the conveyor belt to rotate;

[0025] Preferably, the bag feeding platform 2 is provided with side baffles 6 on both sides of the first conveyor belt 3, and the machine base 1 is provided with a third driving device 61 for driving the two side baffles 6 to move toward each other. The side baffles 6 can block the two sides of the packaging bag during the bag feeding process to prevent the packaging bag from lateral deviation. The side baffles 6 can be moved left and right to adjust the spacing to adapt to packaging bags of different widths for transportation; in this embodiment, the bag feeding platform 2 is provided with several groups of cross screws 62 to match the two side baffles 6, and the threads of the cross screws 62 that match the two side baffles 6 have opposite rotation directions. The third driving device 61 is a servo motor that drives the cross screws 62 to rotate. The cross screws 62 can be driven by a gear chain 63. The side baffles 6 is screwed onto the transverse screw 62, and the transverse screw 62, the side baffle 6 and the servo motor form a screw structure. The servo motor drives the transverse screw 62 to rotate to drive the side baffles 6 to move toward each other on the transverse screw 62; wherein three first conveyor belts 3 can be arranged in parallel, and the two first conveyor belts 3 on both sides can respectively follow the movement of the side baffles 6, and the widths of the two first conveyor belts 3 can be adjusted to adapt to packaging bags of different sizes for transportation. The runners at both ends of the first conveyor belt 3 can be matched with the shaft through a long key, so that the first driving device 31 can drive the first conveyor belt 3 to rotate, and the runner of the first conveyor belt 3 can be moved on the shaft, so that the two first conveyor belts 3 on both sides can follow the movement of the side baffles 6;

[0026] Preferably, a bracket 43 is provided on the bag feeding platform 2, and a first strap 44 that can be placed on the packaging bag is provided on the bracket 43 between the two side baffles 6, and a driving shaft 441 and a transmission shaft 442 are respectively provided at both ends of the first strap 44, and the second conveyor belt 41 is provided on the driving shaft 441 and the transmission shaft 442, and the second driving device 42 drives the second conveyor belt 41 to rotate through the driving shaft 441, and a second strap 45 is hingedly provided on the transmission shaft 442, and a third conveyor belt 451 driven by the transmission shaft 442 is provided on the second strap 45, and a limiting mechanism is provided on the first strap 44 to prevent the second strap 45 from continuously rotating downward; the second driving device 42 is a motor provided on the bracket 43, and the motor can drive the driving shaft 441 to rotate through a chain or a synchronous belt; the first strap 44 is placed on the packaging bag through the transmission shaft 442 and the second conveyor belt 41, and the motor drives the driving shaft 441 to rotate, so that the second conveyor belt 41 rotates When the bag is fed to the conveyor belt 3, the bag is fed to the conveyor belt 3 and the bag is fed to the conveyor belt 3. When the bag is fed to the conveyor belt 3, the bag is fed to the conveyor belt 3 and the bag is fed to the conveyor belt 3. When the bag is fed to the conveyor belt 3, the bag is fed to the conveyor belt 3 and the bag is fed to the conveyor belt 3. When the bag is fed to the conveyor belt 3, the bag is fed to the conveyor belt 3 and the bag is fed to the conveyor belt 3. When the bag is fed to the conveyor belt 3, the bag is fed to the conveyor belt 3 and the bag is fed to the conveyor belt 3

[0027] Preferably, the limiting mechanism includes a limiting column 461, and the second strap 45 is provided with a block 462 that can be placed on the upper side of the limiting column 461; when the second strap 45 droops downward, the block 462 can be placed on the limiting column 461 to prevent the second strap 45 from continuously rotating downward to the bottom, wherein the block 462 can be screwed with a top screw 463, and the top screw 463 can be placed on the limiting column 461. Adjusting the top screw 463 on the block 462 can adjust the downward drooping angle limit of the second strap 45;

[0028] Preferably, the first strap 44 is hingedly provided on the driving shaft 441, a shift block 443 is provided on the upper side of the first strap 44, a positioning plate 431 is provided on the bracket 43 so as to be movable forward and backward, a positioning groove 432 is provided on the positioning plate 431 to cooperate with the shift block 443, and a stopper 433 is provided on the bracket 43 to block the positioning plate 431 from moving forward. In this embodiment, the positioning plate 431 can be provided on the horizontal guide rod 434 on the bracket 43, and the stopper 433 is a nut screwed on the horizontal guide rod 434. The height of the drooping bottom of the first strap 44 is adjusted by adjusting the position of the nut.

[0029] Preferably, a shield plate 435 is provided on the positioning plate 431, and a shielding sensor 436 is provided on the bracket 43 to cooperate with the shield plate 435; when the second strap 45 rotates upward to be parallel to the first strap 44 and the packaging bag is still squeezed too much, the packaging bag will continue to press the first strap 44 to rotate upward, and the shift block 443 on the first strap 44 will shift the positioning plate 431 backward, and the shield plate 435 will be out of the sensing of the shielding sensor 436. The shielding sensor 436 transmits a signal, which can be received by the PLC controller to control the rotation speed of the first drive device 31 and the second drive device 42, so as to decelerate the first drive device 31 and slow down the speed of packaging bag feeding, accelerate the second drive device 42, increase the rotation speed of the second conveyor belt 41 and the third conveyor belt 451, and increase the speed of conveying the top layer of packaging bags forward;

[0030] Preferably, the first strap 44 is provided with two groups between the two side baffles 6, namely a left strap 444 and a right strap 445. The driving shaft 441 is divided into two coaxially separated left main shafts 4411 and right main shafts 4412 in conjunction with the left strap 444 and the right strap 445. The bracket 43 is provided with two coaxially separated left end shafts 4413 and right transverse shafts 4414 in parallel with the left main shaft 4411. The left main shaft 4411 and the left end shaft 4412 are connected to each other. 413 is driven by a synchronous belt, the right transverse shaft 4414 and the right main shaft 4412 are driven by a synchronous belt, the left end shaft 4413 and the right transverse shaft 4414 are driven by a detachable coupling 4415, the right slat 445 is arranged on the right main shaft 4412 and can be moved left and right, and a supporting rod 437 is arranged on the right side of the bracket 43 to cooperate with the right slat 445; the left slat 444 and the right slat 445 are respectively arranged on the left main shaft 4411 and the right main shaft 4412 When the bag is packed in a small size, the two side baffles 6 need to reduce the distance between them. If the distance between the side baffles 6 is smaller than the sum of the widths of the left and right baffles 444 and 445, the right baffle 445 can be rotated upward, and then the right baffle 445 can be moved to the right until it rests on the support rod 437. At this time, the right baffle 445 is in an idle state, and the detachable coupling 4415 can be separated, and the linkage between the left end shaft 4413 and the right transverse shaft 4414 can be disconnected, so that the right baffle 445 is in a stopped state and can be rested on the support rod 437 for standby use. The detachable coupling 4415 is a plum blossom coupling, and one end of the coupling connected to the right transverse shaft 4414 can be keyed to the right transverse shaft 4414, so that it can move left and right on the right transverse shaft 4414 to engage or separate the coupling.

[0031] Preferably, the bracket 43 is movably arranged on the bag feeding platform 2, and the bag feeding platform 2 is provided with a slide rail 21 to cooperate with the bracket 43, and a positioning member is provided on the bracket 43 to cooperate with the slide rail 21. In this embodiment, the positioning member can be a fastening bolt, and the bracket 43 is positioned on the slide rail 21 by the fastening bolt. The bracket 43 can be moved back and forth on the slide rail 21 to adjust the distance between the front end of the second conveyor belt 41 and the third conveyor belt 451 and the bag baffle plate 5, so as to adapt to packaging bags of different lengths for transportation (the distance between the front end of the second conveyor belt 41 and the third conveyor belt 451 and the bag baffle plate 5 needs to be slightly larger than the length of the packaging bag to avoid the packaging bag being affected by the second conveyor belt 41 and the third conveyor belt 451 and wrinkling after reaching the bag baffle plate 5);

[0032] Preferably, a bag-moving mechanism 7 is provided on the front side of the bag-feeding platform 2. The bag-moving mechanism 7 includes a rotating shaft 71 and a fourth driving device 72 for driving the rotating shaft 71 to rotate. A plurality of bag-moving wheels 73 are provided on the rotating shaft 71, and a plurality of paddles 74 are provided on the paddle wheel 73 along the circumference; the fourth driving device 72 is a motor, which can drive the rotating shaft 71 to rotate through a chain. In this embodiment, the paddle 74 is made of rubber. After the packaging bag reaches the bag baffle plate 5, it will rebound backward. The rotation of the bag-moving wheel 73 can move the packaging bag to a position close to the bag baffle plate 5, ensuring that each packaging bag stays in the same position, facilitating subsequent bag grabbing and filling operations, and improving the stability of the equipment operation;

[0033] Preferably, a top plate 51 is hingedly provided at the bag baffle plate 5, and a photoelectric sensor 52 that can be blocked by the top plate 51 is provided on the bag baffle plate 5. After the packaging bag reaches the bag baffle plate 5, it will push the top plate 51 forward, and the upper end of the top plate 51 will block the photoelectric sensor 52. The photoelectric sensor 52 transmits a signal, and the second drive device 42 is controlled by the PLC controller to stop rotating, that is, to stop the action of forward bag separation, to avoid interference between multiple packaging bags. After the grabbing device grabs the packaging bag, the top plate 51 is separated from the photoelectric sensor 52, and the second drive device 42 can separate the bags forward.

[0034] The working process of this embodiment is as follows: a worker puts a stack of packaging bags on the bag feeding platform 2 and twists them out. At this time, the packaging bags can be arranged in sequence on the bag feeding platform 2, and then the first driving device 31 drives the first conveyor belt 3 to rotate, so that the packaging bags slowly move to the bag distributing mechanism 4, and the second driving device 42 drives the driving shaft 441 to rotate, and the driving shaft 441 cooperates with the transmission shaft 442 to drive the second conveyor belt 41 to rotate, and the transmission shaft 442 drives the third conveyor belt 451 to rotate, and sends the packaging bags on the top layer forward. When the packaging bags hit the bag blocking plate 5 at the front end of the bag feeding platform 2, the top plate 51 swings upward to block the photoelectric sensor 52. At this time, the second driving device 42 stops rotating, and the subsequent grabbing device grabs the packaging bags that are delivered to the position, and the top plate 51 falls and separates from the photoelectric sensor 52. The second driving device 42 continues to drive the driving shaft 441 to rotate, and the second conveyor belt 41 and the third conveyor belt 451 continue to send the packaging bags on the top layer forward;

[0035] When the packaging bags on the bag feeding platform 2 squeeze the second strap 45 and the first strap 44, the first strap 44 rotates upward, and the shift block 443 on the first strap 44 drives the positioning plate 431 on the bracket 43 to move backward. The shielding plate 435 on the positioning plate 431 will be out of the sensing of the blocking sensor 436. The blocking sensor 436 sends a signal, which can be received by the PLC controller to control the rotation speed of the first drive device 31 and the second drive device 42, so as to slow down the first drive device 31 and slow down the speed of packaging bag supply, accelerate the second drive device 42, increase the rotation speed of the second conveyor belt 41 and the third conveyor belt 451, and increase the speed of conveying the topmost packaging bag forward.

[0036] The embodiments of the present invention are presented for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application and to enable those skilled in the art to understand the invention and design various embodiments with various modifications as suited for specific applications.

Claims

1. An adaptive bag conveying mechanism, characterized in that: The machine base comprises a bag feeding platform provided on the machine base, a first conveyor belt and a first driving device for driving the first conveyor belt to rotate are provided on the bag feeding platform, a bag separating mechanism for delivering the topmost packaging bag forward is provided on the upper side of the conveyor belt on the bag feeding platform, and a bag blocking plate is provided at the front end of the bag feeding platform; the bag separating mechanism comprises a second conveyor belt and a second driving device for driving the second conveyor belt to rotate; The bag delivery platform is provided with side baffles on both sides of the first conveyor belt, and the machine base is provided with a third driving device for driving the two side baffles to move toward each other; The bag delivery platform is provided with a bracket, and a first strap that can be placed on the packaging bag is provided on the bracket between the two side baffles, and a driving shaft and a transmission shaft are provided at both ends of the first strap, respectively. The second conveyor belt is provided on the driving shaft and the transmission shaft, and the second driving device drives the second conveyor belt to rotate via the driving shaft. The transmission shaft is hingedly provided with a second strap, and a third conveyor belt driven by the transmission shaft is provided on the second strap, and a limiting mechanism is provided on the first strap to prevent the second strap from continuously rotating downward. The first strap is hingedly arranged on the driving shaft, a shift block is arranged on the upper side of the first strap, a positioning plate is arranged on the bracket and can move forward and backward, a positioning slot is arranged on the positioning plate to cooperate with the shift block, and a block is arranged on the bracket to block the positioning plate from moving forward; The limiting mechanism includes a limiting column, and the second bridge plate is provided with a bridge block that can be placed on the upper side of the limiting column; A baffle is provided on the positioning plate, and a blocking sensor is provided on the bracket in conjunction with the baffle. When the baffle is separated from the blocking sensor, the blocking sensor can output a signal to control the rotational speed of the first drive device and the second drive device, wherein the first drive device slows down the operating speed of the first conveyor belt, and the second drive device increases the operating speed of the second conveyor belt and the third conveyor belt, thereby increasing the speed at which the topmost packaging bag is conveyed forward.

2. The adaptive bag conveying mechanism according to claim 1, characterized in that: The first strap is provided with two groups between the two side baffles, namely the left strap and the right strap. The driving shaft cooperates with the left strap and the right strap to be divided into two coaxially separated left main shafts and right main shafts. Two coaxially separated left end shafts and a right transverse shaft are provided on the bracket parallel to the left main shaft. The left main shaft and the left end shaft are driven by a synchronous belt, and the right transverse shaft and the right main shaft are driven by a synchronous belt. The left end shaft and the right transverse shaft are driven by a detachable coupling. The right strap can be movably arranged on the right main shaft left and right, and a support rod is provided on the right side of the bracket to cooperate with the right strap.

3. The adaptive bag conveying mechanism according to claim 1, characterized in that: The bracket is arranged on the bag delivery platform so as to be movable forward and backward. The bag delivery platform is provided with a slide rail to match the bracket. The bracket is provided with a positioning piece to match the slide rail.

4. The adaptive bag conveying mechanism according to claim 1, characterized in that: A bag-moving mechanism is provided on the front side of the bag-feeding platform. The bag-moving mechanism includes a rotating shaft and a fourth driving device for driving the rotating shaft to rotate. A plurality of bag-moving wheels are provided on the rotating shaft. A plurality of paddles are provided on the bag-moving wheels along the circumference.

5. The adaptive bag conveying mechanism according to claim 1, characterized in that: A top plate is hingedly provided at the bag blocking plate, and a photoelectric sensor that can be blocked by the top plate is provided on the bag blocking plate.

Images