Conveying mechanism of high-speed bag making machine

Abstract

The utility model relates to the technical field of plastic product manufacturing, and discloses a material conveying mechanism of a high-speed bag making machine. Comprising a rack, a mounting frame mounted on the rack, an unwinding roller detachably connected to the mounting frame, a conveying roller mounted on the rack, a driving device for driving the conveying roller to rotate, an upper rotating roller mounted on the rack, an overturning frame hinged to the rack and a controller. Compared with the prior art, the plastic film unwinding device has the following advantages and effects that the upper rotating roller, the lower rotating roller and the overturning frame are arranged, a plastic film unwound by a winding drum on the unwinding roller is contained between the upper rotating roller and the lower rotating roller, and the overturning frame is overturned upwards when the production takt is fast, so that the distance between the lower rotating roller and the upper rotating roller is shortened; and sufficient plastic films can be quickly provided. When the bag making machine is shut down due to faults, the unwinding roller and the winding drum unwind a plastic film under the inertia effect of the unwinding roller and the winding drum, the overturning frame descends to enable the distance between the lower rotating roller and the upper rotating roller to be increased, and excessive plastic films can be stored.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic product manufacturing, and particularly relates to a feeding mechanism of a high-speed bag making machine. Background Art

[0002] A bag making machine is a device for manufacturing various plastic packaging bags, usually composed of a feeding mechanism, a heat sealing mechanism, a cutting mechanism, a traction mechanism, etc. The feeding mechanism unwinds and conveys a plastic film, the heat sealing mechanism is used to seal the plastic film, the cutting mechanism cuts the continuous plastic bags into individual finished bags, and the traction mechanism is used to traction the continuous plastic bags forward.

[0003] The Chinese utility model with the publication number of CN219114910U discloses a feeding mechanism for a bag making machine, including a bag making machine feeding frame, a feeding support plate, and a crank; the bag making machine feeding frame is of a frame structure, and the feeding support plate is fixed on both sides of the bag making machine feeding frame by bolts; a screw rod is installed at the ends of the two feeding support plates, and screw nuts are installed at both ends of the screw rod; a slider is installed outside the screw nuts, and the slider is inserted and connected with a smooth shaft; a bearing is installed below the slider, and one end of a material roller mounting rack is inserted and connected with the bearing; a bag making machine conveying roller is installed in the middle of the bag making machine feeding frame; a conveying pressure roller is installed above the driving bag making machine conveying roller, and the conveying pressure roller is in mutual contact with the surface of the driving bag making machine conveying roller; through the improvement of the feeding mechanism for the bag making machine, the utility model has the advantages of simple structure, convenient operation, easy replacement of the material roll, time saving, and synchronous conveying of materials, thus effectively solving the problems and deficiencies in the existing device.

[0004] The above Chinese utility model has the following problems: The plastic film is generally wound into a cylinder and needs to be continuously unwound to convey the plastic film forward. However, the production beats of the heat sealing mechanism, the cutting mechanism, and the traction mechanism are not fixed. When the production beat is relatively fast, the feeding mechanism is required to provide sufficient plastic film. When a fault occurs and the machine stops, the feeding mechanism cannot instantaneously stop unwinding, and still unwinds and conveys the plastic film in a short time, resulting in too much plastic film spreading on the bag making machine. The feeding mechanism for the bag making machine described above cannot meet the working requirements of quickly providing sufficient plastic film when the production beat is relatively fast and storing too much plastic film when a fault occurs and the machine stops. Content of the Utility Model

[0005] The purpose of the utility model is to provide a feeding mechanism of a high-speed bag making machine, which has the effect of quickly providing sufficient plastic film when the production beat is relatively fast and storing too much plastic film when a fault occurs and the machine stops.

[0006] The above technical object of the present utility model is achieved through the following technical solutions: A material feeding mechanism of a high-speed bag making machine, including a machine frame, a mounting frame installed on the machine frame, a unwind roller detachably connected to the mounting frame, a conveying roller installed on the machine frame, a driving device for driving the conveying roller to rotate, an upper rotating roller installed on the machine frame, a flipping frame hinged to the machine frame, and a controller. The flipping frame is rotatably connected with a lower rotating roller. A sensor is provided on the machine frame below the flipping frame. The sensor and the driving device are both in communication connection with the controller.

[0007] By adopting the above technical solutions, the reel formed by winding the plastic film is installed on the unwind roller. The unwound plastic film sequentially bypasses the conveying roller, the upper rotating roller, and the lower rotating roller. Since the lower rotating roller is installed on the flipping frame and the flipping frame is hinged to the machine frame, the plastic film can be accommodated between the lower rotating roller and the upper rotating roller. When the production beat is relatively fast and the traction speed of the traction mechanism of the bag making machine is relatively fast, the acting force of the plastic film on the lower rotating roller causes the flipping frame to swing upward, and the plastic film can be provided to the subsequent processes without changing the rotation speed of the unwind roller. When the bag making machine fails and stops, the unwind roller and the reel continue to rotate and unwind under their own inertia, and the extra unwound plastic film becomes slack. At this time, the flipping frame swings downward under its own gravity to tension and store the plastic film, realizing the functions of quickly providing sufficient plastic film when the production beat is relatively fast and storing excessive plastic film when the machine fails and stops.

[0008] During the normal operation of the material feeding mechanism, if too much plastic film is stored between the upper rotating roller and the lower rotating roller, the flipping frame flips downward and hits the sensor. The sensor transmits a signal to the controller, and the controller adjusts the rotation speed of the unwind roller to reduce the unwinding speed by controlling the driving device.

[0009] The further setting of the present utility model is: The mounting frame is hinged to the machine frame, and a flipping driving member is installed on the machine frame. The flipping driving member is used to drive the mounting frame to flip.

[0010] By adopting the above technical solutions, the flipping driving member can flip and move the mounting frame.

[0011] The further setting of the present utility model is: The flipping driving member is a cylinder.

[0012] The further setting of the present utility model is: The number of the cylinders is two.

[0013] The further setting of the present utility model is: A rotating shaft is rotatably connected to the machine frame. A transmission mechanism for transmitting power is installed between the driving device and the rotating shaft. A first gear is fixed on the rotating shaft, and a second gear is fixed on the unwind roller. The second gear meshes with the first gear.

[0014] By adopting the above technical solution, the driving device can drive both the conveying roller and the unwinding roller, reducing the number of driving devices to lower the equipment manufacturing cost.

[0015] The flipping driving device drives the mounting frame to flip until the second gear disengages from the first gear. At this time, the unwinding roller stops unwinding. The flipping driving device drives the mounting frame to flip until the second gear engages with the first gear, enabling the driving device to drive the unwinding roller to rotate and unwind.

[0016] A further setting of the present utility model is that: the transmission mechanism includes a first belt pulley installed on the driving device, a second belt pulley fixed on the rotating shaft, and a first transmission belt installed between the first belt pulley and the second belt pulley.

[0017] A further setting of the present utility model is that: a third belt pulley is installed on the output part of the driving device, a fourth belt pulley is installed on the conveying roller, and a second transmission belt is installed between the third belt pulley and the fourth belt pulley.

[0018] A further setting of the present utility model is that: the driving device is a motor.

[0019] A further setting of the present utility model is that: the number of the lower rotating rollers is three.

[0020] A further setting of the present utility model is that: the number of the upper rotating rollers is three.

[0021] The beneficial effect of the present utility model is that: by setting the upper rotating roller, the lower rotating roller, and the flipping frame, the plastic film unwound from the reel on the unwinding roller is accommodated between the upper rotating roller and the lower rotating roller. When the production beat is relatively fast, the flipping frame flips upward, reducing the distance between the lower rotating roller and the upper rotating roller, and quickly providing sufficient plastic film. When the bag-making machine breaks down and stops, the unwinding roller and the reel unwind the plastic film under their own inertia, and the flipping frame descends to increase the distance between the lower rotating roller and the upper rotating roller, capable of accommodating excessive plastic film. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 is the structural schematic diagram of the present utility model.

[0024] In the figure, 1 is a frame; 11 is a rotating shaft; 12 is a first gear; 13 is a sensor; 2 is a mounting bracket; 3 is an unwinding roller; 31 is a second gear; 4 is a conveying roller; 5 is a driving device; 6 is a flipping frame; 7 is an upper rotating roller; 8 is a lower rotating roller; 9 is a flipping driving member; 10 is a transmission mechanism; 101 is a first pulley; 102 is a second pulley; 103 is a third pulley; 104 is a fourth pulley; 105 is a first transmission belt; 106 is a second transmission belt. Detailed implementation manners

[0025] The technical solutions of the present utility model will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0026] A feeding mechanism of a high-speed bag making machine, as Figure 1 shown, includes a frame 1, a mounting bracket 2 mounted on the frame 1, and an unwinding roller 3 detachably connected to the mounting bracket 2. The mounting bracket 2 is hinged to the frame 1. A flipping driving member 9 is mounted on the frame 1, and the flipping driving member 9 is used to drive the mounting bracket 2 to flip. The flipping driving member 9 is two cylinders. The cylinder body is hinged to the frame 1, and the cylinder piston rod is hinged to the mounting bracket 2.

[0027] A rotatable conveying roller 4 and a driving device 5 for driving the conveying roller 4 to rotate are mounted on the frame 1. The driving device 5 is a motor, and a third pulley 103 is fixed on its output shaft. A fourth pulley 104 is fixedly mounted on the conveying roller 4, and a second transmission belt 106 is mounted between the third pulley 103 and the fourth pulley 104. A rotating shaft 11 is rotatably connected to the frame 1. A transmission mechanism 10 for transmitting power is mounted between the driving device 5 and the rotating shaft 11. A first gear 12 is fixed on the rotating shaft 11, and a second gear 31 is fixed on the unwinding roller 3. The second gear 31 meshes with the first gear 12. The transmission mechanism 10 includes a first pulley 101 mounted on the driving device 5, a second pulley 102 fixed on the rotating shaft 11, and a first transmission belt 105 mounted between the first pulley 101 and the second pulley 102.

[0028] An upper rotating roller 7 is rotatably connected to the frame 1, and the number of the upper rotating rollers 7 is three. A flipping frame 6 is hinged to the frame 1. A rotatable lower rotating roller 8 is mounted on the flipping frame 6. The number of the lower rotating rollers 8 is three and is located below the upper rotating rollers 7. Both ends of the upper rotating roller 7 are mounted on the frame 1 through bearings, so that the upper rotating roller 7 can rotate on the frame 1. Both ends of the lower rotating roller 8 are mounted on the flipping frame 6 through bearings, so that the lower rotating roller 8 can rotate on the flipping frame 6.

[0029] The material feeding mechanism of the high-speed bag making machine further includes a controller. A sensor 13 is provided on the frame 1 and is located below the flipping frame 6. Both the sensor 13 and the driving device 5 are communicatively connected to the controller.

[0030] Working principle: The reel formed by winding the plastic film is installed on the unwinding roller 3. After unwinding, the plastic film sequentially bypasses the conveying roller 4, the upper rotating roller 7, and the lower rotating roller 8. Since the lower rotating roller 8 is installed on the flipping frame 6, and the flipping frame 6 is hinged to the frame 1, the plastic film can be accommodated between the lower rotating roller 8 and the upper rotating roller 7. When the production tempo is relatively fast and the traction speed of the traction mechanism of the bag making machine is relatively fast, the acting force of the plastic film on the lower rotating roller 8 causes the flipping frame 6 to swing upward, and sufficient plastic film can be provided to the subsequent processes without changing the rotation speed of the unwinding roller 3. When the bag making machine breaks down and stops, the unwinding roller 3 and the reel continue to rotate and unwind under their own inertia, and the extra plastic film unwound becomes slack. At this time, the flipping frame 6 swings downward under its own gravity to tension and collect the plastic film, realizing the functions of quickly providing sufficient plastic film when the production tempo is fast and collecting excessive plastic film when the machine breaks down and stops.

Claims

1. A feeding mechanism of a high-speed bag-making machine, characterized in that: It includes a frame (1), a mounting bracket (2) installed on the frame (1), an unwinding roller (3) detachably connected to the mounting bracket (2), a conveying roller (4) installed on the frame (1), a driving device (5) for driving the rotation of the conveying roller (4), an upper turning roller (7) installed on the frame (1), a flipping frame (6) hinged to the frame (1), and a controller. The flipping frame (6) is rotatably connected with a lower turning roller (8). A sensor (13) is provided on the frame (1) below the flipping frame (6). Both the sensor (13) and the driving device (5) are communicatively connected to the controller.

2. The feeding mechanism of a high-speed bag-making machine according to claim 1, characterized in that: The mounting bracket (2) is hinged to the frame (1), and a flipping driving member (9) is installed on the frame (1). The flipping driving member (9) is used for driving the mounting bracket (2) to flip.

3. The feeding mechanism of a high-speed bag-making machine according to claim 2, characterized in that: The flipping driving member (9) is a cylinder.

4. The feeding mechanism of a high-speed bag-making machine according to claim 3, characterized in that: The number of the cylinders is two.

5. The feeding mechanism of a high-speed bag-making machine according to claim 1, characterized in that: A rotating shaft (11) is rotatably connected to the frame (1). A transmission mechanism (10) for transmitting power is installed between the driving device (5) and the rotating shaft (11). A first gear (12) is fixed on the rotating shaft (11), and a second gear (31) is fixed on the unwinding roller (3). The second gear (31) meshes with the first gear (12).

6. The feeding mechanism of a high-speed bag-making machine according to claim 5, characterized in that: The transmission mechanism (10) includes a first pulley (101) installed on the driving device (5), a second pulley (102) fixed on the rotating shaft (11), and a first transmission belt (105) installed between the first pulley (101) and the second pulley (102).

7. The feeding mechanism of a high-speed bag-making machine according to claim 6, characterized in that: A third pulley (103) is installed on the output part of the driving device (5), a fourth pulley (104) is installed on the conveying roller (4), and a second transmission belt (106) is installed between the third pulley (103) and the fourth pulley (104).

8. The feeding mechanism of a high-speed bag-making machine according to claim 7, characterized in that: The driving device (5) is a motor.

9. The feeding mechanism of a high-speed bag-making machine according to claim 1, characterized in that: The number of the upper turning rollers (7) is three.

10. The feeding mechanism of a high-speed bag-making machine according to claim 9, characterized in that: The number of the lower turning rollers (8) is three.

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