Unwinding mechanism of packaging machine

Abstract

The utility model relates to a packaging machine unwinding mechanism which comprises a support, a supporting mechanism is arranged on one side of the support and comprises a supporting frame and an air expansion shaft, the supporting frame is rotationally connected with the support, the two ends of the supporting frame extend outwards to form supporting arms, and clamping grooves matched with the air expansion shaft are formed in the upper portions of the tail ends of the two supporting arms. A driving mechanism is arranged at the bottom of the supporting mechanism, one end of the driving mechanism is connected with the support, and the other end of the driving mechanism is connected with the supporting frame. The packaging machine has the advantages that the labor intensity of operators is reduced, the feeding efficiency is improved, the application range of the packaging machine is widened, and the working efficiency of the packaging machine is improved.

Description

Technical Field

[0001] This application relates to the field of packaging machine technology, and in particular to a packaging machine unwinding mechanism. Background Technology

[0002] Packaging machines are a type of machine that packages products to protect and enhance their appearance.

[0003] Packaging machines are mainly divided into assembly line-type integrated production packaging and product peripheral packaging equipment. The design and installation of automatic control packaging systems have improved product quality and production efficiency in the packaging machinery industry.

[0004] A bag-making and packaging machine is a production line device that manufactures packaging bags and then places the objects to be packaged into the formed bags for packaging. Traditional bag-making and packaging machines mainly consist of a disc-shaped worktable and film conveying stations, bag forming stations, feeding stations, and packaging sealing stations arranged around the disc-shaped worktable.

[0005] The film used for bag making is usually rolled into rolls. Therefore, packaging machines are generally equipped with an unwinding mechanism. When the packaging machine is running, the film roll is placed in the unwinding mechanism, and the film is unwound for packaging. In existing packaging machines, the unwinding mechanism usually uses a fixed bracket to support the central axis of the film roll. When loading and unloading, the film roll needs to be manually lifted and placed on the bracket. The operation is cumbersome, the labor intensity of the operators is high, and the loading and unloading efficiency is low. Utility Model Content

[0006] To address the problems in existing packaging machines where the unwinding mechanism typically uses a fixed bracket to support the central axis of the film roll, requiring manual lifting of the film roll onto the bracket during loading and unloading—a cumbersome operation with high labor intensity and low loading / unloading efficiency—this application provides a packaging machine unwinding mechanism.

[0007] The packaging machine unwinding mechanism provided in this application adopts the following technical solution: A packaging machine unwinding mechanism includes a bracket, a support mechanism is provided on one side of the bracket, the support mechanism includes a support frame and an air expansion shaft, the support frame is rotatably connected to the bracket, support arms extend outward from both ends of the support frame, and a slot for cooperating with the air expansion shaft is opened above the ends of the two support arms, and a driving mechanism is provided at the bottom of the support mechanism, one end of the driving mechanism is connected to the bracket, and the other end is connected to the support frame, the driving mechanism drives the support frame to rotate around the connection point with the bracket.

[0008] By adopting the above technical solution, when feeding the film roll, the air shaft is inserted into the center of the film roll, the drive mechanism is started, the drive mechanism drives the support frame to rotate downward around the connection with the bracket, the support frame drives the support arm to move downward, so that the end of the support arm is flush with the two ends of the air shaft, the film roll is rolled so that the two ends of the air shaft move into the slots at the end of the support arm, and then the drive mechanism drives the support frame to rotate upward, the support frame drives the support arm to lift the film roll upward, thereby completing the feeding of the film roll.

[0009] Optionally, a detection mechanism is provided on the support arm near the slot. The detection mechanism includes a laser emitter and a laser receiver, which are respectively disposed on the inner sides of the two support arms.

[0010] By adopting the above technical solution, the laser emitter is used to emit laser light, and the laser receiver is used to receive laser light. During the operation of the packaging machine, the diameter of the film roll is relatively large, and the film roll blocks the laser light emitted by the laser emitter. As the packaging machine runs, the diameter of the film roll gradually decreases. When the film roll is unwound, the film roll can no longer block the laser light. The laser receiver receives the laser light and transmits the signal to the control panel. The control panel controls the packaging machine to stop running and reminds the operator to replace the film roll, thereby realizing automated control.

[0011] Optionally, the support arm is also provided with an adjustment mechanism for adjusting the axial position of the air shaft.

[0012] By adopting the above technical solution, the adjustment mechanism can adjust the axial position of the air shaft on the support frame, thereby enabling the film to be smoothly conveyed to the subsequent equipment.

[0013] Optionally, the adjustment mechanism includes a rotating shaft, one end of which is connected to a screw and the other end is provided with a handle. A threaded connection part is provided on one side of the slot on the support arm. The rotating shaft is threadedly connected to the threaded connection part through the screw. An annular protrusion is provided on the rotating shaft, and an annular groove that mates with the annular protrusion is provided at one end of the air shaft.

[0014] By adopting the above technical solution, when adjusting the axial position of the film roll, the handle is rotated to rotate the shaft, which drives the screw to rotate. The screw and the threaded connection drive the shaft to move axially. The annular protrusion on the shaft is embedded in the annular groove on the air expansion shaft. The shaft drives the air expansion shaft to move axially with the shaft through the cooperation of the annular protrusion and the annular groove, thereby realizing the adjustment of the axial position of the air expansion shaft.

[0015] Optionally, the drive mechanism includes a lift, the lower end of which is rotatably connected to the bracket, the lifting rod in the lift is rotatably connected to the support arm, and a drive motor is connected to one side of the lift.

[0016] By adopting the above technical solution, the drive motor drives the lifting rod in the elevator to extend or retract, thereby driving the support frame to rotate around the connection point with the bracket.

[0017] Optionally, a pressing mechanism is provided above the support mechanism. The pressing mechanism includes a pressure belt, one end of which is fixedly connected to the bracket, and the other end is connected to a counterweight.

[0018] By adopting the above technical solution, after the film roll is placed on the support frame, the pressure belt presses on the top of the film roll circumferentially. The weight of the counterweight makes the pressure belt tightly adhere to the upper surface of the film roll. During the operation of the packaging machine, the film roll rotates intermittently to unwind. When the film roll is stationary, the film on the film roll will loosen. By setting the pressure belt, the pressure belt and the counterweight apply downward pressure to the film roll, thereby preventing the film from loosening when the film roll is stationary.

[0019] Optionally, a first guide roller and a second guide roller are respectively provided on both sides of the bracket.

[0020] By adopting the above technical solution, the first guide roller and the second guide roller are used to guide and transport the film.

[0021] Optionally, reinforcing ribs are provided at the connection between the support arm and the support frame.

[0022] By adopting the above technical solution, the structural strength of the support arm is improved by setting reinforcing ribs.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. This application features a flip-up support frame, which can be flipped downwards during loading, making it easier for operators to load the film roll, reducing the labor intensity of operators and improving loading efficiency;

[0025] 2. In this application, an adjustment mechanism is provided on the support arm. The adjustment mechanism can adjust the axial position of the air shaft, so that the film corresponds to the position of other equipment inside the packaging machine when it is unwound, thereby expanding the application range of the packaging machine.

[0026] 3. In this application, a detection mechanism is set at the end of the support arm. When the film roll is unwound, the detection mechanism is triggered, the packaging machine stops running and reminds the operator to replace the film roll, thus realizing the automated control of the packaging machine and improving the working efficiency of the packaging machine.

[0027] 4. In this application, a pressing mechanism is provided above the support mechanism. The pressure belt in the pressing mechanism presses on the film roll in the circumferential direction. The pressure belt is tightly attached to the upper surface of the film roll by the gravity of the counterweight. During the operation of the packaging machine, the film roll rotates intermittently to unwind. When the film roll is stationary, the film on the film roll will loosen. By setting the pressure belt, the pressure belt and the counterweight apply downward pressure to the film roll, thereby preventing the film from loosening when the film roll is stationary, and improving the working efficiency of the packaging machine. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of a packaging machine unwinding mechanism according to an embodiment of this application.

[0029] Figure 2 This is a top view of the unwinding mechanism of a packaging machine according to an embodiment of this application.

[0030] Figure 3 This is an example of a packaging machine unwinding mechanism in the embodiments of this application. Figure 2 A magnified schematic diagram of a portion of structure A.

[0031] Figure 4 This is a schematic diagram of the operation of a packaging machine unwinding mechanism in an embodiment of this application.

[0032] Explanation of reference numerals in the attached drawings: 1. Bracket; 2. Pressing mechanism; 3. Support mechanism; 4. Drive mechanism; 5. First guide roller; 6. Second guide roller; 7. Pressure belt; 8. Counterweight; 9. Slot; 10. Air shaft; 11. Adjustment mechanism; 12. Detection mechanism; 13. Support arm; 14. Reinforcing rib; 15. Support frame; 16. Lifting mechanism; 17. Drive motor; 18. Annular groove; 19. Threaded connection; 20. Screw; 21. Annular protrusion; 22. Rotating shaft; 23. Handle. Detailed Implementation

[0033] The following specific embodiments illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification.

[0034] Please see Figure 1-4It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of this application and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this application, should still fall within the scope of the technical content disclosed in this application. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this application. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this application's implementation.

[0035] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0036] This embodiment discloses a packaging machine unwinding mechanism.

[0037] Reference Figure 1 The system includes a support 1, a support mechanism 3 on one side of the support 1, a drive mechanism 4 between the support mechanism 3 and the support 1, the support mechanism 3 includes a support frame 15, the support frame 15 is rotatably connected to the support 1, the two ends of the support frame 15 are connected to parallel support arms 13, the end of the support arm 13 is provided with an upward-opening slot 9, the two ends of the air shaft 10 are locked in the slot 9, the support mechanism 3 is provided with a pressing mechanism 2 above the support mechanism 3, the pressing mechanism 2 includes a pressing band 7, one end of the pressing band 7 is fixedly connected to the support 1, the two ends of the pressing band 7 are connected to counterweights 8, the two sides of the support 1 are also provided with a first guide roller 5 and a second guide roller 6 respectively, the first guide roller 5 is provided between the support mechanism 3 and the pressing mechanism 2;

[0038] Reference Figure 2 A reinforcing rib 14 is provided at the connection between the support arm 13 and the support frame 15. The drive mechanism 4 adopts a lift 16. The lower end of the lift 16 is rotatably connected to the bracket 1. The lifting rod in the lift 16 is rotatably connected to the support frame 15. A detection mechanism 12 is provided on the support arm 13 near the slot 9. The detection mechanism 12 includes a laser emitter and a laser receiver. The laser emitter and the laser receiver are respectively provided on the inner side of the two support arms 13. An adjustment mechanism 11 is also provided on one of the support arms 13 near the slot 9.

[0039] Reference Figure 3The adjustment mechanism 11 includes a rotating shaft 22, one end of which is connected to a screw 20, and the other end is provided with a handle 23. A threaded connection part 19 is provided on one side of the slot 9 on the support arm 13. The rotating shaft 22 is threadedly connected to the threaded connection part 19 through the screw 20. An annular protrusion 21 is provided on the rotating shaft 22, and an annular groove 18 that mates with the annular protrusion 21 is provided on one end of the air shaft 10.

[0040] The implementation principle of the unwinding mechanism of a packaging machine in this embodiment is as follows:

[0041] Reference Figure 4 When feeding the film roll, the air shaft 10 is inserted into the center of the film roll, and the drive mechanism 4 is started. The drive mechanism 4 drives the support frame 15 to rotate downward around the connection with the bracket 1. The support frame 15 drives the support arm 13 to move downward, so that the end of the support arm 13 is flush with the two ends of the air shaft 10. The film roll is rolled so that the two ends of the air shaft 10 move into the slots 9 at the ends of the support arm 13. Then the drive mechanism 4 drives the support frame 15 to rotate upward, and the support frame 15 drives the support arm 13 to lift the film roll upward. After the support mechanism 3 lifts the film roll into position, it presses the pressure strip 7 circumferentially above the film roll. The weight of the counterweight 8 makes the pressure strip 7 adhere tightly to the upper surface of the film roll. Then, the axial position of the film roll is adjusted by the adjustment mechanism 11. When adjusting the axial position of the film roll, the handle 23 rotates the shaft 22, which drives the screw 20 to rotate. The screw 20 drives the shaft 22 to move axially through the threaded connection part 19. The annular protrusion 21 on the shaft 22 is embedded in the annular part on the air expansion shaft 10. In the groove 18, the rotating shaft 22 drives the air shaft 10 to move axially along the rotating shaft 22 through the cooperation of the annular protrusion 21 and the annular groove 18. After the position is adjusted, the film is drawn out from the film roll and passes through the first guide roller 5 and the second guide roller 6 to extend to other equipment. During the operation of the packaging machine, the film roll rotates intermittently to unwind. When the film roll is stationary, the film on the film roll will loosen. The pressure belt 7 and the counterweight 8 apply downward pressure to the film roll to prevent the film from loosening when the film roll is stationary. During the operation of the packaging machine, the laser emitter is used to emit laser and the laser receiver is used to receive laser. Because the diameter of the film roll is large, the film roll blocks the laser emitted by the laser emitter. As the packaging machine runs, the diameter of the film roll gradually decreases. When the film roll is unwound, the film roll can no longer block the laser. The laser receiver receives the laser and transmits the signal to the control panel. The control panel controls the packaging machine to stop running and reminds the operator to replace the film roll, thereby realizing automatic control.

[0042] In summary, this application features a flip-up support frame that can be flipped downwards during loading, facilitating film roll loading for operators, reducing labor intensity, and improving loading efficiency. Furthermore, an adjustment mechanism is incorporated into the support arm, allowing for axial position adjustment of the air shaft. This ensures the film aligns with other internal components of the packaging machine during unwinding, expanding the machine's applicability. Finally, a detection mechanism is installed at the end of the support arm. When the film roll unwinding is complete, the detection mechanism triggers, stopping the packaging machine and alerting the operator. The manual replacement of the film roll enables automated control of the packaging machine, improving its working efficiency. In this application, a pressing mechanism is installed above the support structure. A pressure belt in the pressing mechanism presses circumferentially against the film roll, and the weight of the counterweight ensures the pressure belt adheres tightly to the upper surface of the film roll. During the operation of the packaging machine, the film roll rotates intermittently to unwind. When the film roll is stationary, the film on it may loosen. By installing the pressure belt, which, along with the counterweight, applies downward pressure to the film roll, it prevents the film from loosening when the roll is stationary, thus improving the working efficiency of the packaging machine. Therefore, this application effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0043] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered within the protection scope of this application.

Claims

1. A packaging machine unwinding mechanism, characterized by, The support includes a bracket (1), and a support mechanism (3) is provided on one side of the bracket (1). The support mechanism (3) includes a support frame (15) and an air shaft (10). The support frame (15) is rotatably connected to the bracket (1). Support arms (13) extend outward from both ends of the support frame (15). A slot (9) that cooperates with the air shaft (10) is provided above the ends of the two support arms (13). A drive mechanism (4) is provided at the bottom of the support mechanism (3). One end of the drive mechanism (4) is connected to the bracket (1), and the other end is connected to the support frame (15). The drive mechanism (4) drives the support frame (15) to rotate around the connection point with the bracket (1).

2. A packaging machine unwinding mechanism according to claim 1, characterized in that: A detection mechanism (12) is provided on the support arm (13) near the slot (9). The detection mechanism (12) includes a laser emitter and a laser receiver, which are respectively arranged on the inner sides of the two support arms (13).

3. A packaging machine unwinding mechanism according to claim 1, characterized in that: The support arm (13) is also provided with an adjustment mechanism (11) for adjusting the axial position of the air shaft (10).

4. A packaging machine unwinding mechanism according to claim 3, characterized in that: The adjustment mechanism (11) includes a rotating shaft (22), one end of which is connected to a screw (20), and the other end is provided with a handle (23). A threaded connection part (19) is provided on one side of the slot (9) on the support arm (13). The rotating shaft (22) is threadedly connected to the threaded connection part (19) through the screw (20). An annular protrusion (21) is provided on the rotating shaft (22), and an annular groove (18) that cooperates with the annular protrusion (21) is provided on one end of the air expansion shaft (10).

5. A packaging machine unwinding mechanism according to claim 1, characterized in that: The drive mechanism (4) includes a lift (16), the lower end of which is rotatably connected to the bracket (1), the lifting rod in the lift (16) is rotatably connected to the support arm (13), and a drive motor (17) is connected to one side of the lift (16).

6. A packaging machine unwinding mechanism according to claim 1, characterized in that: A pressing mechanism (2) is provided above the support mechanism (3). The pressing mechanism (2) includes a pressing belt (7). One end of the pressing belt (7) is fixedly connected to the bracket (1), and the other end is connected to a counterweight (8).

7. A packaging machine unwinding mechanism according to claim 1, characterized in that: The bracket (1) is provided with a first guide roller (5) and a second guide roller (6) on both sides respectively.

8. A packaging machine unwinding mechanism according to claim 1, characterized in that: A reinforcing rib (14) is provided at the connection between the support arm (13) and the support frame (15).

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