Longitudinal sealing and film drawing mechanism for vertical packaging machine

Abstract

The utility model relates to a longitudinal sealing and film drawing mechanism for a vertical packaging machine, which is characterized by comprising a bottom plate, a longitudinal sealing roller, an air cylinder and a film drawing component, two groups of pull rods are arranged on the bottom plate through linear bearings, a cross rod is arranged at one end of each pull rod, a cross plate is arranged at the other end of each pull rod, the longitudinal sealing roller is movably arranged on the cross rods through a sliding seat, and the longitudinal sealing roller is movably arranged on the longitudinal sealing roller through a sliding seat. The air cylinder is arranged on the side, close to the transverse plate, of the bottom plate, a screw rod is arranged at the output end of the air cylinder, the other end of the screw rod penetrates through the transverse plate to extend, the screw rod is in threaded connection with an adjusting nut, the adjusting nut is arranged on the side, close to the bottom plate, of the transverse plate, and the film drawing assembly is arranged on the inner sides of the two sets of pull rods. The distance between the longitudinal sealing roller and the supporting pipe is set through the screw rod and the nut, the packaging film is prevented from being crushed due to the fact that the distance between the longitudinal sealing roller and the supporting pipe is too small in the longitudinal sealing process, and meanwhile the longitudinal sealing device is suitable for longitudinal sealing of packaging films with different thicknesses.

Description

Technical Field

[0001] The utility model relates to a longitudinal sealing and film pulling mechanism for a vertical packaging machine, belonging to the technical field of packaging machines. Background Art

[0002] A vertical packaging machine is a commonly used device in industrial production, mainly used for packaging materials such as food, medicine, and feed. The current vertical packaging machine usually includes a film loading mechanism, a film feeding mechanism, a film pulling mechanism, a former, a longitudinal sealing mechanism, a transverse sealing mechanism, and a feeding mechanism. During the packaging process, the vertical packaging machine tightens the packaging film through the film pulling mechanism and then transports it to the former. The packaging film forms a tubular structure after passing through the former. While the longitudinal sealing mechanism seals the side of the tubular structure, the material is injected into it. Finally, the transverse sealing mechanism completes the transverse cutting and transverse sealing.

[0003] When the longitudinal sealing mechanism of the existing vertical packaging machine performs longitudinal sealing and forming on the packaging film, the longitudinal sealing roller is driven by a cylinder to fit with the support tube of the former, and longitudinal sealing and forming are performed on the packaging film outside the support tube. There are the following defects: when the longitudinal sealing roller fits with the support tube of the former under the drive of the cylinder, there will be an overfitting situation, resulting in the packaging film being damaged. Therefore, a certain small distance needs to be maintained between the longitudinal sealing roller and the support tube during longitudinal sealing; at the same time, in order to adapt to the longitudinal sealing of packaging films with different thicknesses, the small distance between the longitudinal sealing roller and the support tube also needs to be adjustable.

[0004] Therefore, how to provide a longitudinal sealing and film pulling mechanism for a vertical packaging machine that is convenient for adjusting the distance between the longitudinal sealing roller and the support tube is the research purpose of the present utility model. Summary of the Utility Model

[0005] Aiming at the above-mentioned technical deficiencies, the present utility model provides a longitudinal sealing and film pulling mechanism for a vertical packaging machine, which sets the distance between the longitudinal sealing roller and the support tube through a screw and a nut, avoiding the situation that the distance between the longitudinal sealing roller and the support tube is too small during longitudinal sealing and damaging the packaging film, and at the same time adapting to the longitudinal sealing of packaging films with different thicknesses.

[0006] In order to solve the problems of the existing technology, the technical solutions adopted by the present utility model are as follows:

[0007] A longitudinal sealing and film pulling mechanism for a vertical packaging machine, characterized in that: it includes a bottom plate, a longitudinal sealing roller, a cylinder, and a film pulling assembly. Two groups of pull rods are arranged on the bottom plate through linear bearings. One end of the two groups of pull rods is provided with a cross bar, and the other end is provided with a cross plate. The longitudinal sealing roller is movably arranged on the cross bar through a sliding seat. The cylinder is arranged on one side of the bottom plate close to the cross plate. The output end of the cylinder is provided with a screw, and the other end of the screw extends through the cross plate. An adjusting nut is threadedly connected to the screw, and the adjusting nut is arranged on the side of the cross plate close to the bottom plate. The film pulling assembly is arranged inside the two groups of pull rods.

[0008] Further, the film pulling assembly includes two sets of oppositely arranged film pulling synchronous belts. A transmission shaft is connected to the rear end of the bottom of each set of film pulling synchronous belts. The transmission shaft is movably arranged on the bottom plate through a sliding plate, and the sliding plate is arranged on the bottom plate through a guide rod and a linear bearing.

[0009] Further, the transmission shaft is rotatably arranged on the sliding plate through a bearing, and one end of the transmission shaft far from the film pulling synchronous belt is connected with a linkage shaft through a coupling.

[0010] Further, a sliding plate cylinder for driving the sliding plate to slide is connected to the outside of the sliding plate.

[0011] Further, a support rod is arranged inside the two sets of film pulling synchronous belts and at the rear end of the longitudinal sealing roller. One end of the support rod is fixedly arranged on the bottom plate.

[0012] Further, an interval for the support tube of the former to pass through is formed among the support rod, the longitudinal sealing roller and the inner sides of the two sets of film pulling synchronous belts.

[0013] Further, a through hole for the screw rod to pass through is arranged on the cross plate, and the outer wall of the screw rod is in close fit with the inner wall of the through hole on the cross plate.

[0014] The beneficial effects of the utility model are as follows: By setting the distance between the longitudinal sealing roller and the support tube through the screw rod and the nut, it is avoided that the distance between the longitudinal sealing roller and the support tube is too small during longitudinal sealing and the packaging film is damaged, and at the same time, it is suitable for longitudinal sealing of packaging films with different thicknesses. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of the utility model.

[0016] Figure 2 is a partial structural diagram of the utility model.

[0017] Figure 3 is a schematic structural diagram of the film pulling assembly of the utility model.

[0018] Wherein: bottom plate 1, longitudinal sealing roller 2, cylinder 3, film pulling assembly 4, pull rod 5, cross bar 6, cross plate 7, screw rod 8, adjusting nut 9, film pulling synchronous belt 401, transmission shaft 402, sliding plate 403, linkage shaft 404, sliding plate cylinder 405, support rod 10. Detailed Embodiment

[0019] In order to enable those skilled in the art to better understand the technical solution of the utility model, the following further analyzes the utility model in conjunction with the attached Figures 1-3 drawings.

[0020] Such as Figures 1-3As shown in the figure, a longitudinal sealing film pulling mechanism for a vertical packaging machine is characterized in that it includes a bottom plate 1, a longitudinal sealing roller 2, a cylinder 3 and a film pulling assembly 4. On the bottom plate 1, there are two groups of pull rods 5 provided through linear bearings. One end of the two groups of pull rods 5 is provided with a cross bar 6, and the other end is provided with a cross plate 7. The longitudinal sealing roller 2 is movably arranged on the cross bar 6 through a sliding seat. The cylinder 3 is arranged on one side of the bottom plate 1 close to the cross plate 7. The output end of the cylinder 3 is provided with a screw rod 8, and the other end of the screw rod 8 extends through the cross plate 7. A regulating nut 9 is threadedly connected to the screw rod 8, and the regulating nut 9 is arranged on the side of the cross plate 7 close to the bottom plate 1. During longitudinal sealing, the piston rod of the cylinder 3 extends, and the cross plate 7 is pushed away from the bottom plate 1 through the regulating nut 9 on the screw rod 8, and the longitudinal sealing roller 2 is driven by the pull rod 5 to move towards the bottom plate 1 to thermally press-seal the packaging film on the outer wall of the former support tube. The film pulling assembly 4 is arranged inside the two groups of pull rods 5.

[0021] In this embodiment, preferably, the film pulling assembly 4 includes two groups of oppositely arranged film pulling synchronous belts 401. The bottom rear end of each group of film pulling synchronous belts 401 is connected with a transmission shaft 402. The transmission shaft 402 is movably arranged on the bottom plate 1 through a sliding plate 403. The sliding plate 403 is arranged on the bottom plate 1 through a guide rod and a linear bearing.

[0022] In this embodiment, preferably, the transmission shaft 402 is rotatably arranged on the sliding plate 403 through a bearing. One end of the transmission shaft 402 away from the film pulling synchronous belt 401 is connected with a linkage shaft 404 through a coupling, and a motor is connected through the linkage shaft 404 to drive the film pulling synchronous belt 401 to operate and pull the film.

[0023] In this embodiment, preferably, the outside of the sliding plate 403 is connected with a sliding plate cylinder 405 for driving its sliding. During film pulling, the piston rod of the sliding plate cylinder 405 extends to push the film pulling synchronous belt 401 to fit with the support tube of the former, and pull the packaging film on the outer wall of the former support tube to convey it downward.

[0024] In this embodiment, preferably, inside the two groups of film pulling synchronous belts 401 and at the rear end of the longitudinal sealing roller 2, there is a support rod 10. One end of the support rod 10 is fixedly arranged on the bottom plate 1.

[0025] In this embodiment, preferably, an interval for the former support tube to pass through is formed inside the support rod 10, the longitudinal sealing roller 2 and the two groups of film pulling synchronous belts 401.

[0026] In this embodiment, preferably, the transverse plate 7 is provided with a through hole for the screw rod 8 to pass through, and the outer wall of the screw rod 8 is in close fit with the inner wall of the through hole on the transverse plate 7, so that when the piston rod of the air cylinder 3 contracts, the transverse plate 7 can be driven by the screw rod 8 to move towards the bottom plate 1, and the longitudinal sealing roller 2 is reset away from the support pipe of the former.

[0027] When the utility model is in use: the piston rods of the sliding plate air cylinder 405 and the air cylinder 3 extend, pushing the film pulling synchronous belt 401 to fit with the support pipe of the former, pulling the packaging film on the outer wall of the former support pipe to be conveyed downward, and at the same time, the longitudinal sealing roller 2 thermally presses and seals the packaging film on the outer wall of the former support pipe.

[0028] When the utility model is adjusted: the piston rod of the air cylinder 3 extends, pushing the transverse plate 7 to move away from the bottom plate 1 through the adjusting nut 9 on the screw rod 8, and driving the longitudinal sealing roller 2 to move towards the bottom plate 1 through the pull rod 5. At this time, the distance between the longitudinal sealing roller 2 and the support pipe of the former can be finely adjusted through the adjusting nut 9. Specifically, manually rotate the adjusting nut 9 to move away from the bottom plate 1, drive the longitudinal sealing roller 2 to move towards the bottom plate 1 through the transverse plate 7 and the pull rod 5, and reduce the distance between the longitudinal sealing roller 2 and the support pipe of the former; manually rotate the adjusting nut 9 to move towards the bottom plate 1, and then manually push the transverse plate 7 to move away from the bottom plate 1 and fit with the adjusting nut 9, driving the longitudinal sealing roller 2 to move away from the bottom plate 1, increasing the distance between the longitudinal sealing roller 2 and the support pipe of the former, avoiding damaging the packaging film due to too small a distance between the longitudinal sealing roller 2 and the support pipe during longitudinal sealing, and at the same time adapting to the longitudinal sealing of packaging films of different thicknesses.

[0029] The technical solutions provided by the present application have been introduced in detail above. In this article, the principles and implementation manners of the present application are described by using embodiments. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A longitudinal sealing and film pulling mechanism for a vertical packaging machine, characterized in that: It includes a bottom plate, a longitudinal sealing roller, a cylinder and a film pulling assembly. Two sets of pull rods are arranged on the bottom plate through linear bearings. A cross bar is arranged at one end of the two sets of pull rods, and a cross plate is arranged at the other end. The longitudinal sealing roller is movably arranged on the cross bar through a sliding seat. The cylinder is arranged on one side of the bottom plate close to the cross plate. A screw rod is arranged at the output end of the cylinder, and the other end of the screw rod extends through the cross plate. An adjusting nut is threadedly connected to the screw rod, and the adjusting nut is arranged on the side of the cross plate close to the bottom plate. The film pulling assembly is arranged inside the two sets of pull rods.

2. The longitudinal sealing and film pulling mechanism for a vertical packaging machine according to claim 1, wherein: The film pulling assembly includes two sets of oppositely arranged film pulling synchronous belts. A transmission shaft is connected to the rear end of the bottom of each set of film pulling synchronous belts. The transmission shaft is movably arranged on the bottom plate through a sliding plate, and the sliding plate is arranged on the bottom plate through a guide rod and a linear bearing.

3. The longitudinal sealing and film pulling mechanism for a vertical packaging machine according to claim 2, wherein: The transmission shaft is rotatably arranged on the sliding plate through a bearing, and one end of the transmission shaft away from the film pulling synchronous belt is connected to a linkage shaft through a coupling.

4. The longitudinal sealing and film pulling mechanism for a vertical packaging machine according to claim 2, characterized in that: A sliding plate cylinder for driving the sliding plate to slide is connected to the outside of the sliding plate.

5. The longitudinal sealing and film pulling mechanism for a vertical packaging machine according to claim 2, wherein: A support rod is arranged inside the two sets of film pulling synchronous belts and at the rear end of the longitudinal sealing roller. One end of the support rod is fixedly arranged on the bottom plate.

6. The longitudinal sealing and film pulling mechanism for a vertical packaging machine according to claim 5, characterized in that: An interval through which the support tube of the former can pass is formed inside the support rod, the longitudinal sealing roller and the two sets of film pulling synchronous belts.

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