Bag taking device with bag-squeezing mechanism

Abstract

A bag taking device provided with a bag smoothing mechanism comprises a bag storage mechanism, a bag taking mechanism and a bag smoothing mechanism installed on a frame, the bag taking mechanism is arranged above the bag storage mechanism, and a bag smoothing mechanism is arranged below the bag taking mechanism, and the structure of the bag smoothing mechanism is as follows: a horizontally arranged linear guide is connected to one side of the frame, and one end of a bag smoothing plate is slidably connected to the linear guide; a synchronous pulley is respectively arranged at both ends below the linear guide, and the synchronous belt is wrapped between the two synchronous pulleys, and one end of the bag smoothing plate connected to the linear guide is connected to the synchronous belt; a limit block for limiting the position of both ends of the bag smoothing plate is respectively arranged near the two ends of the linear guide; the shaft of a synchronous pulley is connected to the bag smoothing motor installed on the frame. The advantage of the present invention is that after the replacement action is completed, the bag mouth of the flat bag can be reshaped once to restore the bag mouth to its original state. This will increase the success rate of bag taking, thereby improving the stability of the equipment and accelerating the production rhythm.

Description

Technical Field

[0001] The invention relates to a bag taking device of an automatic packaging machine, which is used for lifting packaging bags to a proper height and position and belongs to the technical field of packaging machinery. Background Art

[0002] Automatic packaging machines are generally equipped with a bag-taking mechanism to lift a packaging bag to an appropriate height and position. The structure of the bag-taking mechanism currently on the market is mainly to simply suck the flat bag with a suction cup and lift it to a certain distance. During the lifting process of the flat bag, the bag mouth will separate from the upper and lower sides (open the mouth) due to gravity, which will reduce the success rate of bag taking and the success rate of subsequent actions, thereby affecting the stability of equipment operation and reducing production efficiency. Summary of the invention

[0003] The invention provides a bag taking device provided with a bag moving mechanism to solve the problems existing in the prior art.

[0004] The technical solution of the present invention is: a bag taking device provided with a bag-pulling mechanism, comprising a bag storage mechanism and a bag taking mechanism installed on a frame, the bag taking mechanism being arranged above the bag storage mechanism, and characterized in that a bag-pulling mechanism is arranged below the bag taking mechanism, the bag-pulling mechanism comprising a linear guide, a synchronous belt, a limit block, a bag-pulling motor, a synchronous pulley and a bag-pulling plate, the horizontally arranged linear guide being connected to one side of the frame, one end of the bag-pulling plate being slidably connected to the linear guide; a synchronous pulley is respectively installed at both ends below the linear guide, the synchronous belt is wrapped around the two synchronous pulleys, and one end of the bag-pulling plate connected to the linear guide is connected to the synchronous belt; a limit block for limiting the position of the two ends of the bag-pulling plate is respectively installed near the two ends of the linear guide; an axis of the synchronous pulley is drivingly connected to the bag-pulling motor installed on the frame.

[0005] The bag storage mechanism includes a bag storage platform, a bag storage platform baffle and a bag storage platform driving cylinder. The cylinder body of the bag storage platform driving cylinder with a piston rod facing upward is connected to the frame through a cylinder bracket; the top end of the piston rod of the bag storage platform driving cylinder is connected to the bottom end of the bag platform; and bag storage platform baffles are provided on both sides of the bag storage platform.

[0006] The bag taking mechanism includes a suction cup bracket, a suction cup bracket driving cylinder, a cylinder bracket, a bag taking cylinder, a suction cup, a bag clamp and an upper bag rocker arm. At least two rows of suction cups are connected under the suction cup bracket. The suction cup bracket is connected to the top of the piston rod of the suction cup bracket driving cylinder installed on the frame; the upper bag rocker arm is installed on the right side of the frame through a seat bearing, the bag taking cylinder is fixed on the upper bag rocker arm, and the suction cup and the bag clamp are fixed to the end of the piston rod of the bag taking cylinder.

[0007] The top end of the piston rod of the suction cup bracket driving cylinder is connected to the suction cup bracket through a driving rocker arm and a parallelogram mechanism. The parallelogram mechanism consists of a rocker arm mounting seat, a rocker arm, a connecting rod and a driving rocker arm. The rocker arm mounting seat is fixed to the frame body by bolts, and the upper and lower ends of the rocker arm mounting seat are respectively hinged to one end of the rocker arm and the driving rocker arm, and the other ends of the rocker arm and the driving rocker arm are hinged to the two ends of the connecting rod; the top end of the suction cup bracket is connected to the bottom end of the connecting rod; one end of the driving rocker arm is fixedly connected to the hinge shaft between the rocker arm mounting seat and one end of the driving rocker arm, and the other end of the driving rocker arm is hinged to the top end of the piston rod at the upper end of the suction cup bracket driving cylinder, and the bottom end of the suction cup bracket driving cylinder is hinged to the frame body.

[0008] A vertical long hole for adjusting the relative position of the suction cup bracket on the connecting rod is provided at the bottom of the connecting rod, and the top end of the suction cup bracket is fixed in the vertical long hole by bolts.

[0009] The invention has the advantages that after the replacement action is completed, the bag opening of the flat bag can be reshaped to restore the bag opening to its original state, which will increase the success rate of bag removal, thereby improving the stability of the equipment and accelerating the production rhythm. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the overall side of the present invention;

[0011] Figure 2 yes Figure 1 A top view of

[0012] Figure 3 It is a structural schematic diagram of the bag storage mechanism of the present invention;

[0013] Figure 4 yes Figure 3 AA section view;

[0014] Figure 5 It is a structural schematic diagram of the bag taking mechanism of the present invention;

[0015] Figure 6 yes Figure 5 The enlarged view of point A in the middle;

[0016] Figure 7 yes Figure 6 Right view of;

[0017] Figure 8 It is a structural schematic diagram of the bag-straightening mechanism of the present invention;

[0018] Fig. 9 yes Figure 8 A top view of

[0019] Fig.10It is a structural schematic diagram of the first step of the working process of the present invention;

[0020] Fig.11 It is a structural schematic diagram of the second step of the working process of the present invention.

[0021] Explanation of the reference numerals in the accompanying drawings: 1. frame; 2. bag storage platform; 3. bag storage platform baffle; 4. cylinder bracket; 5. bag storage platform driving cylinder; 6. rocker arm mounting seat; 7. rocker arm; 8. connecting rod; 9. suction cup bracket; 10. driving rocker arm; 11. driving rocker arm; 12. suction cup bracket driving cylinder; 13. cylinder bracket; 14. bag taking cylinder; 15. suction cup; 16. linear guide rail; 17. synchronous belt; 18. limit block; 19. bag smoothing motor; 20. synchronous pulley; 21. bag smoothing plate; 22. flat bag; 23. bag clamp; 24. bag loading rocker arm. DETAILED DESCRIPTION

[0022] See also Figure 1-Figure 9 The present invention provides a bag taking device with a bag-squeezing mechanism, comprising a bag storage mechanism and a bag taking mechanism installed on a frame 1, wherein the bag taking mechanism is arranged above the bag storage mechanism. A bag-squeezing mechanism is arranged below the bag taking mechanism, and the bag-squeezing mechanism (see Figure 8 and Fig. 9 ) includes a linear guide 16, a synchronous belt 17, a limit block 18, a bag-smoothing motor 19, a synchronous pulley 20 and a bag-smoothing plate 21. The horizontally arranged linear guide 16 is connected to one side of the frame 1, and one end of the bag-smoothing plate 21 is slidably connected to the linear guide 16; a synchronous pulley 20 is respectively installed at both ends below the linear guide 16, and the synchronous belt 17 is wrapped around the two synchronous pulleys 20, and the end of the bag-smoothing plate 21 connected to the linear guide 16 is connected to the synchronous belt 17; a limit block 18 for limiting the position of the two ends of the bag-smoothing plate 21 is respectively installed near the two ends of the linear guide 16; an axis of the synchronous pulley 20 is transmission-connected to the bag-smoothing motor 19 installed on the frame 1.

[0023] See also Figure 3 and Figure 4 The bag storage mechanism includes a bag storage platform 2, a bag storage platform baffle 3 and a bag storage platform driving cylinder 5. The cylinder body of the bag storage platform driving cylinder 5 with the piston rod facing upward is connected to the frame 1 through a cylinder bracket 4; the top end of the piston rod of the bag storage platform driving cylinder 5 is connected to the bottom end of the bag platform 2; and bag storage platform baffles 3 are provided on both sides of the bag storage platform 2.

[0024] See also Figure 5-Figure 7The bag taking mechanism includes a suction cup bracket 9, a suction cup bracket driving cylinder 12, a cylinder bracket 13, a bag taking cylinder 14, a suction cup 15, a bag clamp 23 and a bag upper rocker arm 24. The top of the piston rod of the suction cup bracket driving cylinder 12 is connected to the suction cup bracket 9 through a driving rocker arm 11 and a parallelogram mechanism. The parallelogram mechanism consists of a rocker mounting seat 6, a rocker 7, a connecting rod 8 and a driving rocker 10. The rocker mounting seat 6 is fixed to the frame 1 by bolts. The upper and lower ends of the rocker mounting seat 6 are respectively hinged to the rocker 7 and one end of the driving rocker 10. The rocker 7 and The other end of the driving rocker arm 10 is hinged to the two ends of the connecting rod 8; the top of the suction cup bracket 9 is connected to the bottom end of the connecting rod 8; one end of the driving rocker arm 11 is fixedly connected to the hinge axis between the rocker arm mounting seat 6 and one end of the driving rocker arm 10, and the other end of the driving rocker arm 11 is hinged to the top end of the piston rod at the upper end of the suction cup bracket driving cylinder 12, and the bottom end of the suction cup bracket driving cylinder 12 is hinged to the frame 1; the upper bag rocker arm 24 is fixed to the right side of the frame 1, the bag taking cylinder 14 is fixed to the upper bag rocker arm 24, and the suction cup 15 and the bag clamp 23 are fixed to the end of the piston rod of the bag taking cylinder 14.

[0025] A vertical long hole for adjusting the relative position of the suction cup bracket 9 on the connecting rod 8 is provided at the bottom of the connecting rod 8, and the top end of the suction cup bracket 9 is fixed in the vertical long hole by bolts.

[0026] The working process of the present invention is described as follows:

[0027] First step (see Fig.10 ): The bag storage platform driving cylinder 5 extends upward, driving the bag storage platform 2 and the flat bag 22 placed thereon to move upward; the bag taking suction cup bracket driving cylinder 12 retracts, and the connecting rod 8 moves downward, driving the suction cup bracket 9 installed at its bottom end and the multiple suction cups 15 thereunder to move downward, so that the suction cup 15 fits tightly with the flat bag 22; at the same time, the bag taking cylinder 14 extends, driving the suction cup 15 at its bottom end to move downward, so that the suction cup 15 fits tightly with the flat bag 22; then the suction cup 15 sucks the topmost flat bag 22 through negative pressure; then the bag storage platform driving cylinder 5 retracts, driving the bag storage platform 2 and the remaining flat bags 22 back to their initial positions; at the same time, the bag taking suction cup bracket driving cylinder 12 extends and the bag taking cylinder 14 retracts, thus completing the bag taking action. At this time, the opening end of the right end of the sucked flat bag 22′ is in an open state (that is, the lower layer of the flat bag 22′ droops, as shown in FIG. 1 ). Figure 8 (shown by double-dotted lines).

[0028] The second step (see Fig.11): After the bag taking action is completed, the negative pressure in the suction cup is maintained; the bag smoothing motor 19 is started in forward rotation, and the bag smoothing plate 21 is driven to move to the right end through the synchronous belt 17 until it reaches the position of the limit block 18 at the right end, and then the bag smoothing motor 19 stops, and the bag smoothing plate 21 smoothes the lower layer of the flat bag 22' from left to right until it fits with the upper layer (that is, the opening at the right end is closed, such as Fig. 9 At this time, the negative pressure in the suction cup 5 at the bag tail (left end) of the flat bag 22' is cancelled, and the bag tail falls freely, while the negative pressure in the suction cup 5 at the bag mouth (right end) of the flat bag 22' continues to be maintained; at the same time, the bag clamp 23 at the end of the extended end of the bag taking cylinder 14 clamps the bag mouth (right end) of the flat bag 22'. The main function of the bag clamp 23 is to clamp the bag mouth (right end) of the flat bag 22' that has been smoothed, so as to prevent the lower layer of the bag mouth from sagging after the bag smoothing plate 21 is retracted (refer to Figure 6 and Figure 7 ); the upper bag rocker arm moves to the right with the bag taking cylinder 14 and the flat bag 22 for subsequent actions.

[0029] The third step is to complete the second step, the bag motor 19 is reversed and started, and the bag plate 21 is driven to move to the left by the synchronous belt 17 until it reaches the position of the limit block 18 at the left end, and the bag motor 19 is stopped and restored to Figure 1 and Figure 2 The initial state prepares for the next work process.

Claims

1. A bag taking device provided with a bag-squeezing mechanism, comprising a bag storage mechanism and a bag taking mechanism mounted on a frame (1), wherein the bag taking mechanism is arranged above the bag storage mechanism, and characterized in that: A bag-stroking mechanism is provided below the bag-taking mechanism, and the bag-stroking mechanism comprises a linear guide rail (16), a synchronous belt (17), a limit block (18), a bag-stroking motor (19), a synchronous pulley (20) and a bag-stroking plate (21). The horizontally arranged linear guide rail (16) is connected to one side of the frame (1), and one end of the bag-stroking plate (21) is slidably connected to the linear guide rail (16); a synchronous pulley (20) is respectively provided at both ends below the linear guide rail (16), and the synchronous belt (17) is looped between the two synchronous pulleys (20); one end of the bag-stroking plate (21) connected to the linear guide rail (16) is connected to the synchronous belt (17); a limit block (18) for limiting the position of the two ends of the bag-stroking plate (21) is respectively provided near the two ends of the linear guide rail (16); an axis of the synchronous pulley (20) is drivingly connected to the bag-stroking motor (19) installed on the frame (1); The bag storage mechanism comprises a bag storage platform (2), a bag storage platform baffle (3) and a bag storage platform driving cylinder (5); the cylinder body of the bag storage platform driving cylinder (5) with the piston rod arranged upward is connected to the frame body (1) through a cylinder bracket (4); the top end of the piston rod of the bag storage platform driving cylinder (5) is connected to the bottom end of the bag platform (2); and bag storage platform baffles (3) are arranged on both sides of the bag storage platform (2); The bag taking mechanism comprises a suction cup bracket (9), a suction cup bracket driving cylinder (12), a cylinder bracket (13), a bag taking cylinder (14), a suction cup (15), a bag clamp (23) and an upper bag rocker arm (24). At least two rows of suction cups (15) are connected below the suction cup bracket (9). The suction cup bracket (9) is connected to the top of a piston rod of a suction cup bracket driving cylinder (12) mounted on the frame (1). The upper bag rocker arm (24) is mounted on the right side of the frame (1) via a seat bearing. The bag taking cylinder (14) is fixed on the upper bag rocker arm (24). The suction cup (15) and the bag clamp (23) are fixed to the end of the piston rod of the bag taking cylinder (14). The top end of the piston rod of the suction cup support driving cylinder (12) is connected to the suction cup support (9) via a driving rocker arm (11) and a parallelogram mechanism, the parallelogram mechanism consisting of a rocker mounting seat (6), a rocker rod (7), a connecting rod (8) and a driving rocker rod (10), the rocker mounting seat (6) being fixed to the frame (1) by bolts, the upper and lower ends of the rocker mounting seat (6) being hinged to one end of the rocker rod (7) and the driving rocker rod (10), respectively, the rocker rod (7) being connected to the connecting rod (8) and the driving rocker rod (10), ) and the other end of the driving rocker (10) are hinged to the two ends of the connecting rod (8); the top end of the suction cup bracket (9) is connected to the bottom end of the connecting rod (8); one end of the driving rocker arm (11) is fixedly connected to the hinge shaft between the rocker arm mounting seat (6) and one end of the driving rocker arm (10), and the other end of the driving rocker arm (11) is hinged to the top end of the piston rod at the upper end of the suction cup bracket driving cylinder (12), and the bottom end of the suction cup bracket driving cylinder (12) is hinged to the frame (1).

2. The bag taking device with a bag-squeezing mechanism according to claim 1, characterized in that: A vertical long hole for adjusting the relative position of the suction cup bracket (9) on the connecting rod (8) is provided at the bottom of the connecting rod (8), and the top end of the suction cup bracket (9) is fixed in the vertical long hole by means of bolts.

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