Downward film drawing structure of polyolefin sponge packaging machine

Abstract

The utility model provides a lower film pulling structure of a polyolefin sponge packaging machine, which belongs to the field of mattress packaging equipment and comprises a rolling and packaging component, a film roll is rotatably mounted above the rolling and packaging component, a film pulling component used for pulling out a packaging film is arranged on one side of the film roll, and the film pulling component is arranged on the other side of the film roll. A film pulling assembly is installed on the film roll, a film cutting assembly used for cutting off a packaging film is installed on one side of the film pulling assembly, the packaging film extends to the film pulling assembly after being pulled out of the film roll and then falls to the rolling and packaging assembly from the film pulling assembly, the film roll is arranged above the rolling and packaging assembly, and the packaging film is provided for the rolling and packaging assembly in a film lowering mode through the gravity of the packaging film. The film sealing device can adapt to packaging films with large thicknesses, heating and film sealing are convenient, the film placing structure can be simplified, and the stability of the device is improved.

Description

Technical Field

[0001] The utility model belongs to the field of mattress packaging equipment, and particularly relates to a downward film structure of a polyolefin sponge packaging machine. Background Art

[0002] The packaging process of polyolefin sponge includes putting the finished sponge into a dust-proof bag with a customized size, then compressing the sponge to squeeze out the air in the dust-proof bag and reduce the volume for convenient transportation and storage. The compressed sponge then enters the hot pressing and sealing link, and the bag mouth is quickly sealed through high temperature. Finally, the sealed sponge is wound into a shape, and the process of winding the polyolefin sponge into a shape is generally completed by a winding and packaging machine.

[0003] However, the film feeding structure of the current winding and packaging machine mostly adopts the downward film pulling method. The method of pulling the packaging film from bottom to top cannot be applied to relatively thick packaging films, nor is it suitable for heat-sealing the film. Its flexibility and versatility are relatively insufficient, and it is difficult to meet the market demand. Content of the Utility Model

[0004] Based on the above problems existing in the prior art, the utility model provides a downward film structure of a polyolefin sponge packaging machine, which includes a winding and packaging component. A film roll is rotatably installed above the winding and packaging component. One side of the film roll is provided with a film pulling component for pulling out the packaging film, and one side of the film pulling component is installed with a film cutting component for cutting the packaging film. The packaging film is pulled out from the film roll and extends to the film pulling component, and then drops from the film pulling component to the winding and packaging component.

[0005] Wherein, the downward film structure of the polyolefin sponge packaging machine further includes a frame, and the winding and packaging component, the film roll, the film pulling component and the film cutting component are all installed on the frame.

[0006] Wherein, a lifting component is installed on the frame. The lifting component includes a lifting motor fixedly installed on the frame. The lifting motor is connected by the cooperation of a gear box and a transmission shaft to a plurality of lifting racks slidably installed on the frame. One end of the lifting rack is fixedly installed with a lifting sliding seat, and the lifting sliding seat is slidably connected to the frame up and down. The lifting motor drives the lifting sliding seat to slide up and down, and the winding and packaging component, the film roll, the film pulling component and the film cutting component are all installed on the lifting sliding seat.

[0007] Wherein, a horizontally extending horizontal slide bar is arranged on the lifting sliding seat. A front and rear sliding seat is slidably installed on the horizontal slide bar. A front and rear rack is fixedly arranged on the front and rear sliding seat. A front and rear driving motor is fixedly installed on the lifting sliding seat. The front and rear driving motor is connected by a synchronous shaft to a front and rear gear meshing with the front and rear rack. The front and rear driving motor drives the front and rear sliding seat to slide back and forth along the horizontal slide bar, and the winding and packaging component, the film roll, the film pulling component and the film cutting component are all installed on the front and rear sliding seat.

[0008] Among them, a rectangular pulley seat is fixedly installed on the front and rear slide seats, and the front and rear pulleys are rotatably installed in the pulley seat. Grooves matching the horizontal slide bar are arranged on the circumference of the front and rear pulleys. The horizontal slide bar passes through the pulley seat and slides with the grooves of the front and rear pulleys. A horizontal slide bar is respectively arranged above and below the front and rear pulleys, and the distance between the two horizontal slide bars is greater than the minimum diameter of the front and rear pulleys and less than the maximum diameter of the pulleys.

[0009] Among them, an unwinding box is fixedly installed on the front and rear sliding seats, and an unwinding opening is provided on one side of the unwinding box. The reel of the film roll is placed in the unwinding box through the unwinding opening, and the reel and the unwinding box can be rotatably slid up and down; an auxiliary film-drawing roller is rotatably provided on the front and rear sliding seats below the unwinding box, and the auxiliary film-drawing roller is transmission-connected to the auxiliary film-drawing motor and driven to rotate by the auxiliary film-drawing motor, and the film roll and the auxiliary film-drawing roller are in contact and cooperate with each other.

[0010] Among them, the film-stretching assembly includes a fixed film-stretching roller rotatably mounted on the front and rear slides, the surface of the fixed film-stretching roller is provided with friction patterns and is transmission-connected to the main film-stretching motor, the front and rear slides are installed with a movable film-stretching roller that slides up and down above the fixed film-stretching roller and cooperates with the fixed film-stretching roller to clamp the film, the front and rear slides are also fixedly installed with a film-stretching extrusion cylinder above the movable film-stretching roller, and the film-stretching extrusion cylinder drives the movable film-stretching roller to slide up and down.

[0011] Among them, the film cutting assembly includes a mounting beam fixedly connected to the front and rear slides, a plurality of film cutting cylinders are fixedly mounted on the mounting beam, the telescopic ends of all film cutting cylinders are commonly fixedly mounted with the same knife seat, a film cutting knife is fixedly mounted on the knife seat, a plurality of synchronous racks are also fixedly mounted on the knife seat, a plurality of synchronous gears meshing with the synchronous racks are rotatably mounted on the mounting beam, and all the synchronous gears are connected for synchronous rotation via a synchronous shaft.

[0012] The utility model has the beneficial effects:

[0013] 1. The film roll is set above the winding assembly, and the packaging film is provided to the winding assembly by lowering the film using the gravity of the packaging film itself. This can adapt to thicker packaging films, facilitate heating and sealing, and simplify the film placement structure to improve the stability of the equipment.

[0014] 2. Through the coordination of lifting components and front and rear slides, the film placing structure can be adjusted in the up and down directions and the front and rear directions. It can make corresponding adjustments according to different situations and has better adaptability and versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural diagram of the pull-down membrane structure of a polyolefin sponge packaging machine, with the frame hidden.

[0016] Figure 2It is a three-dimensional structure schematic diagram of the downward film structure of a polyolefin sponge packaging machine. The frame is hidden, and only the reel of the film roll is shown.

[0017] Figure 3 It is a three-dimensional structure schematic diagram of the downward film structure of a polyolefin sponge packaging machine. The frame and the lifting assembly are hidden, and only the reel of the film roll is shown.

[0018] Figure 4 It is a three-dimensional structure schematic diagram of the lifting slide seat.

[0019] Figure 5 It is a schematic diagram of the cooperation between the lifting slide seat and the frame.

[0020] Figure 6 It is a schematic diagram of the drive connection between the auxiliary film pulling roller and the auxiliary film pulling motor.

[0021] Figure 7 It is a three-dimensional structure schematic diagram of another angle of the downward film structure of a polyolefin sponge packaging machine. The frame and the lifting assembly are hidden, and only the reel of the film roll is shown.

[0022] Figure 8 It is Figure 7 The enlarged view of part A of

[0023] Figure 9 It is a schematic diagram of the running direction of the packaging film.

[0024] Figure 10 It is a schematic diagram of the combined use of the downward film structure in the embodiment. Detailed implementation mode

[0025] The following describes the present utility model in detail with reference to the accompanying drawings and specific embodiments.

[0026] As shown in the attached Figures 1-10 A downward film structure of a polyolefin sponge packaging machine is shown, including a frame 1, on which a lifting assembly is installed. The lifting assembly includes a worm and gear box fixedly installed on the upper part of the frame 1. An elevating motor 2 is installed on the upper part of the worm and gear box. The elevating motor 2 is drivingly connected to four lifting racks 3 slidably installed on the frame 1 through the cooperation of the worm and gear box and the transmission shaft. The four lifting racks 3 are respectively located at the four top corners of the frame 1. The bottom ends of the four lifting racks 3 are fixedly installed with the same lifting slide seat 4. Both ends of the lifting slide seat 4 are slidably installed on the frame 1 through the cooperation of sliders and slide bars, and the lifting slide seat 4 is driven by the elevating motor 2 to slide up and down.

[0027] Four horizontally extending slide bars 5 extending front and back are provided on the lifting slide base 4. Two horizontally slide bars 5 form a group, and the two horizontally slide bars 5 in the group are arranged vertically one above the other, and are divided into two groups of horizontally slide bars 5. One group of horizontally slide bars 5 is provided on each side of the frame 1. A front and back slide base 6 is slidably mounted on the horizontally slide bars 5 in the front and back direction. Four hollow rectangular pulley seats 7 are fixedly mounted on the front and back slide base 6. Two pulley seats 7 form a group, and the pulley seats 7 in the group are arranged front and back. One group of pulley seats 7 is provided on each side of the frame 1. A front and back pulley 8 is rotatably mounted in the pulley seat 7. A groove matching the horizontally slide bar 5 is provided on the circumferential side of the front and back pulley 8. One group of horizontally slide bars 5 cooperates with one group of pulley seats 7. Two horizontally slide bars 5 pass through the pulley seat 7 and are in sliding cooperation with the groove of the front and back pulley 8. One horizontally slide bar 5 is provided above and below the front and back pulley 8 respectively. The distance between the two horizontally slide bars 5 is greater than the minimum diameter of the front and back pulley 8 and less than the maximum diameter of the pulley, so that the front and back pulley 8 can slide along the horizontally slide bar 5 and will not fall off. A front and back rack 9 is fixedly provided on the upper surface of the pulley seat 7 of the front and back slide base 6. A front and back drive motor 10 is fixedly mounted on the lifting slide base 4. The front and back drive motor 10 is connected by a synchronous shaft to a front and back gear 11 meshing with the front and back rack 9. The front and back gears 11 on both sides of the lifting slide base 4 are synchronously rotationally connected by a synchronous shaft. The front and back drive motor 10 drives the front and back slide base 6 to slide back and forth along the horizontally slide bar 5.

[0028] A rewinding and packaging assembly 12 is provided at the lower part of the frame 1. The front and rear sliding seat 6 is located above the rewinding and packaging assembly 12. A film unwinding box 13 is fixedly installed on the front and rear sliding seat 6. A film unwinding opening 14 is provided on one side of the film unwinding box 13. A film roll 15 is placed in the film unwinding box 13. The reel 16 of the film roll 15 is placed into the film unwinding box 13 through the film unwinding opening 14. And the reel 16 and the film unwinding box 13 are in a rotatable up-and-down sliding fit, so that during the use of the packaging film, the film roll 15 can adaptively descend as the diameter decreases, ensuring that the surface of the film roll 15 is always in contact with the auxiliary film pulling roller 17. Two auxiliary film pulling rollers 17 are rotatably arranged under the film unwinding box 13 on the front and rear sliding seat 6. Both of the two auxiliary film pulling rollers 17 are in transmission connection with an auxiliary film pulling motor 18 and are driven to rotate by the auxiliary film pulling motor 18. The film roll 15 is in contact and cooperation with the auxiliary film pulling rollers 17. The rotation of the auxiliary film pulling rollers 17 will drive the film roll 15 to rotate. A film pulling assembly for pulling out the packaging film is provided on one side of the film roll 15. The film pulling assembly includes a fixed film pulling roller 19 rotatably installed on the front and rear sliding seat 6. The surface of the fixed film pulling roller 19 is provided with strip-shaped concave and convex friction lines and is in transmission connection with a main film pulling motor (the main film pulling motor is not shown in the drawings). An active film pulling roller 20 for clamping and pulling the film in cooperation with the fixed film pulling roller 19 is slidably installed up and down above the fixed film pulling roller 19 on the front and rear sliding seat 6. A film pulling pressing cylinder 21 is also fixedly installed above the active film pulling roller 20 on the front and rear sliding seat 6. The film pulling pressing cylinder 21 drives the active film pulling roller 20 to slide up and down. A film cutting assembly for cutting the packaging film is installed on one side of the film pulling assembly. The film cutting assembly includes a mounting beam 22 fixedly connected to the front and rear sliding seat 6. Two film cutting cylinders 23 are fixedly installed on the mounting beam 22. The telescopic ends of the two film cutting cylinders 23 are jointly fixedly installed with the same tool holder 24. A film cutting knife is fixedly installed on the tool holder 24. Two synchronous rack bars 25 are also fixedly installed on the tool holder 24. The synchronous rack bars 25 correspond to the film cutting cylinders 23. Two synchronous gears 26 meshing with the synchronous rack bars 25 are rotatably installed on the mounting beam 22. The two synchronous gears 26 are synchronously rotationally connected through a synchronous shaft. The cooperation of the synchronous gears 26, the synchronous shaft and the synchronous rack bars 25 can ensure the synchronous movement of the tool holder 24 and ensure the film cutting effect. The packaging film extends to the film pulling assembly after being pulled out from the film roll 15, and then drops from the film pulling assembly to the rewinding and packaging assembly 12.

[0029] The drop-down film structure provided in this embodiment is a part of the polyolefin sponge packaging production line. During use, first, according to actual needs, the front and rear sliding seats 6 and the structures mounted on the front and rear sliding seats 6 are driven to appropriate positions through the cooperation of the lifting motor 2 and the front and rear driving motors 10. Then, the film roll 15 to be used is placed into the unwinding box 13 through the unwinding opening 14. The lower part of the film roll 15 contacts the upper parts of the two auxiliary film pulling rollers 17. Manually pull out the packaging film from the film roll 15 and pull the packaging film to cross over the fixed film pulling roller 19 from above. The packaging film then freely drops from one side of the fixed film pulling roller 19 to the wrapping and packaging assembly 12. At this time, the film pulling and pressing air cylinder 21 is activated and drives the movable film pulling roller 20 to descend. The movable film pulling roller 20 presses the packaging film against the fixed film pulling roller 19. At this time, the auxiliary film pulling motor 18 and the main film pulling motor can be started simultaneously, driving the fixed film pulling roller 19 and the auxiliary film pulling rollers 17 to rotate simultaneously to continuously pull out the packaging film from the film roll 15 and supply it to the wrapping and packaging assembly 12.

[0030] When the wrapping and packaging are completed, the auxiliary film pulling motor 18 and the main film pulling motor stop working. The film cutting air cylinder 23 is activated to drive the film cutting knife to move towards the packaging film and cut the packaging film. Then, the film cutting air cylinder 23 drives the film cutting knife to reset.

[0031] Using the method of dropping the film to supply the packaging film to the wrapping and packaging assembly 12 can adapt to packaging films with larger thicknesses, is also convenient for heat sealing, and can simplify the film dropping structure and improve the stability of the equipment.

[0032] The above-described embodiments only represent one implementation mode of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model shall be subject to the appended claims.

Claims

1. A pull-down film structure of a polyolefin sponge packaging machine, comprising a wrapping assembly (12), characterized in that: A film roll (15) is rotatably installed above the wrapping assembly (12), a film-pulling assembly for pulling out the packaging film is provided on one side of the film roll (15), and a film-cutting assembly for cutting the packaging film is installed on one side of the film-pulling assembly. After being pulled out from the film roll (15), the packaging film extends to the film-pulling assembly and then falls from the film-pulling assembly to the wrapping assembly (12).

2. The pull-down film structure of a polyolefin sponge packaging machine according to claim 1, characterized in that: It also comprises a frame (1), and the wrapping assembly (12), the film roll (15), the film drawing assembly and the film cutting assembly are all mounted on the frame (1).

3. The pull-down film structure of a polyolefin sponge packaging machine according to claim 2, characterized in that: The frame (1) is provided with a lifting assembly, the lifting assembly comprising a lifting motor (2) fixedly mounted on the frame (1); the lifting motor (2) is connected to a plurality of lifting gear rods (3) mounted on the frame (1) through a gear box and a transmission shaft; one end of the lifting gear rod (3) is fixedly mounted with a lifting slide (4); the lifting slide (4) and the frame (1) are connected in an up-and-down sliding manner; the lifting motor (2) drives the lifting slide (4) to slide up and down; the wrapping assembly (12), the film roll (15), the film pulling assembly and the film cutting assembly are all mounted on the lifting slide (4).

4. The pull-down film structure of a polyolefin sponge packaging machine according to claim 3, characterized in that: The lifting slide (4) is provided with a horizontal slide bar (5) extending forward and backward, and a front and rear slide (6) is installed on the horizontal slide bar (5) to slide forward and backward, and a front and rear rack (9) is fixedly installed on the front and rear slide (6). A front and rear drive motor (10) is fixedly installed on the lifting slide (4), and the front and rear drive motor (10) is connected to a front and rear gear (11) meshing with the front and rear rack (9) through a synchronous shaft drive. The front and rear drive motor (10) drives the front and rear slide (6) to slide forward and backward along the horizontal slide bar (5), and the wrapping assembly (12), the film roll (15), the film pulling assembly and the film cutting assembly are all installed on the front and rear slides (6).

5. The pull-down film structure of a polyolefin sponge packaging machine according to claim 4, characterized in that: A rectangular pulley seat (7) is fixedly mounted on the front and rear slide seats (6), and front and rear pulleys (8) are rotatably mounted in the pulley seats (7). Grooves matching the horizontal slide bars (5) are arranged around the front and rear pulleys (8). The horizontal slide bars (5) pass through the pulley seats (7) and slide in cooperation with the grooves of the front and rear pulleys (8). A horizontal slide bar (5) is respectively arranged above and below the front and rear pulleys (8), and the distance between the two horizontal slide bars (5) is greater than the minimum diameter of the front and rear pulleys (8) and less than the maximum diameter of the pulleys.

6. The pull-down film structure of a polyolefin sponge packaging machine according to claim 5, characterized in that: A reel box (13) is fixedly mounted on the front and rear slides (6), and a reel opening (14) is provided on one side of the reel box (13). The reel (16) of the film roll (15) is placed in the reel box (13) through the reel opening (14), and the reel (16) and the reel box (13) can be rotatably slidably matched up and down; an auxiliary film-drawing roller (17) is rotatably provided on the front and rear slides (6) below the reel box (13), and the auxiliary film-drawing roller (17) is transmission-connected to an auxiliary film-drawing motor (18) and driven to rotate by the auxiliary film-drawing motor (18), and the film roll (15) and the auxiliary film-drawing roller (17) are in contact and matched.

7. The pull-down film structure of a polyolefin sponge packaging machine according to claim 6, characterized in that: The film-drawing assembly comprises a fixed film-drawing roller (19) rotatably mounted on the front and rear slides (6); the surface of the fixed film-drawing roller (19) is provided with friction patterns and is transmission-connected to a main film-drawing motor; the front and rear slides (6) are provided with a movable film-drawing roller (20) which slides up and down above the fixed film-drawing roller (19) and cooperates with the fixed film-drawing roller (19) to clamp the film; the front and rear slides (6) are also fixedly provided with a film-drawing extrusion cylinder (21) above the movable film-drawing roller (20); the film-drawing extrusion cylinder (21) drives the movable film-drawing roller (20) to slide up and down.

8. The pull-down film structure of a polyolefin sponge packaging machine according to claim 7, characterized in that: The film cutting assembly comprises a mounting beam (22) fixedly connected to the front and rear slide seats (6), a plurality of film cutting cylinders (23) are fixedly mounted on the mounting beam (22), the telescopic ends of all the film cutting cylinders (23) are fixedly mounted with a same knife seat (24), a film cutting knife is fixedly mounted on the knife seat (24), a plurality of synchronous racks (25) are also fixedly mounted on the knife seat (24), a plurality of synchronous gears (26) meshing with the synchronous racks (25) are rotatably mounted on the mounting beam (22), and all the synchronous gears (26) are connected to each other in synchronous rotation via a synchronous shaft.

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