A heavy film conveying device

Abstract

This invention provides a heavy-duty film conveying device. It solves the problems of existing equipment, which typically uses only one film-pulling assembly to drive the film roll a long distance, resulting in excessive travel distance from the film roll to the formed bag, and the film's heavy weight. Driving with only one film-pulling assembly leads to insufficient power and uneven film feeding. In this invention, the frame is sequentially arranged with a film feeding assembly, a first film-pulling assembly, a second film-pulling assembly, and a cutting assembly for cutting the film roll along the film feeding direction. A sealing mechanism for sealing the film roll is located between the first and second film-pulling assemblies. The overall layout is more rational. By driving the film roll movement through the first and second film-pulling assemblies positioned before and after the sealing mechanism, the film roll experiences uniform force during overall movement, resulting in a smoother film pulling process and effectively ensuring the stability of the finished product quality.

Description

Technical Field

[0001] This invention relates to the field of packaging technology, and in particular to a heavy film conveying device. Background Technology

[0002] With economic development, people's demands for products extend beyond quality to include packaging. Good packaging attracts more consumers. However, most packaging requires outer film, which needs to be stretched by a film-pulling assembly during its journey. Existing equipment typically uses only one set of film-pulling assemblies to drive the film a considerable distance. The journey from the film roll to the formed bag is too long, and the film itself is heavy. Using only one set of film-pulling assemblies results in insufficient power and uneven film movement. There are areas for improvement in the existing technology. Summary of the Invention

[0003] In view of the above-mentioned existing situation, the present invention provides a heavy film conveying device, including a frame, a film roll for feeding film is provided on one side of the frame, and a film feeding assembly, a first film pulling assembly, a second film pulling assembly and a cutter assembly for cutting film are sequentially arranged on the frame along the film feeding direction. A sealing mechanism for sealing film is provided between the first film pulling assembly and the second film pulling assembly, and at least one set of film pressing assembly for pressing film is provided on the film feeding assembly, the first film pulling assembly and the second film pulling assembly respectively.

[0004] Preferably, the first film-pulling assembly is used for pulling the film longitudinally, the second film-pulling assembly is used for feeding the film transversely, and the first film-pulling assembly and the second film-pulling assembly are located at a bend in the film movement path.

[0005] Preferably, the film feeding assembly, the first film pulling assembly, and the second film pulling assembly each include a rotating roller rotatably mounted on the frame. A power source is provided on one side of the rotating roller to drive the rotating roller to rotate and move the film. The power source is fixedly mounted on the side wall of the frame, and the aforementioned film pressing assembly is positioned opposite the rotating roller.

[0006] Preferably, the pressing assembly includes a bracket fixedly mounted on a frame, on which a movable frame is movably mounted facing the rotating roller, and the movable frame is provided with a plurality of rollers for pressing against the rotating roller, the axial direction of the rollers being parallel to the axial direction of the rotating roller.

[0007] Preferably, a cylinder for driving the movable frame to move in the direction of the rotating roller is fixedly installed on the bracket.

[0008] Preferably, the second film-stretching assembly is provided with two sets of film-pressing assemblies, the two sets of film-pressing assemblies being located above the rotating roller of the second film-stretching assembly and on the side of the rotating roller away from the first film-stretching assembly.

[0009] Preferably, two guide plates for guiding the film and extending downward are provided between the pressing component on the side of the second film stretching assembly away from the first film stretching assembly and the rotating roller on the second film stretching assembly, and a guide groove for the film to pass through is provided between the two guide plates.

[0010] Preferably, a film holder for mounting film rolls is fixedly provided on the lower end of the frame away from the film feeding assembly.

[0011] Preferably, a plurality of guide rollers for guiding the film are fixedly installed inside the frame, and a tension roller for tensioning the film is movably arranged between the plurality of guide rollers. The guide rollers and the tension roller are located between the film feeding assembly and the first film pulling assembly.

[0012] Preferably, the frame sidewall is provided with a tensioning component for adjusting the height position of the tensioning roller, and the frame side away from the tensioning component is provided with a slot for engaging the tensioning roller.

[0013] Preferably, a film-stopping assembly for clamping and fixing the film is provided above the cutter assembly. The film-stopping assembly includes two opposing clamping plates for clamping the film. The clamping plates move towards the other clamping plate under the drive of a cylinder and clamp the film.

[0014] Preferably, the sealing mechanism is movably mounted on the frame via a slide rail, and the frame is provided with an adjustment component for driving the sealing mechanism to move between the first film-pulling assembly and the second film-pulling assembly.

[0015] Preferably, the sealing mechanism includes a base, which is slidably mounted on the slide rail on both sides by sliders. At least one set of sealing blades is provided inside the base and a fixing seat for supporting the film is fixedly provided inside the base. The fixing seat has a notch for heat sealing the film, and the notch is located between the two sealing blades.

[0016] Preferably, the adjustment assembly includes a drive wheel and a driven wheel rotatably mounted on the frame. The drive wheel and the driven wheel are fitted with a synchronous belt. The base is fixedly mounted on the synchronous belt via a connecting plate and moves back and forth along the slide rail with the synchronous belt. An adjustment power source for driving the drive wheel to rotate is fixedly mounted on the frame.

[0017] Preferably, the mounting base is provided with an upper cooling component and a lower cooling component for blowing air to cool the notch.

[0018] Preferably, the frame is fixedly equipped with a heat-sealing power source that drives the sealing knife to move toward the notch on the fixed seat.

[0019] Preferably, the fixing base is provided with a cooling component for cooling the heat-sealed film, and the cooling component is located at the front end of the fixing base in the direction of film movement.

[0020] Preferably, the sealing blade is provided in two sets, the notch is provided in two places, and the upper cooling component and the lower cooling component are provided in two sets, with each set of the sealing blade, the notch, the upper cooling component, and the lower cooling component corresponding one-to-one.

[0021] Compared with the prior art, the present invention drives the film to move by setting the first film-pulling assembly and the second film-pulling assembly before and after the sealing mechanism. The film is subjected to uniform force during the overall movement, the film-pulling process is smoother, and the stability of the finished product quality is effectively guaranteed. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure in the direction of the second membrane stretching assembly;

[0024] Figure 3 This is a schematic diagram of the structure at the first membrane assembly;

[0025] Figure 4 This is a schematic diagram of the structure at the second membrane assembly;

[0026] Figure 5 This is a side view of the present invention;

[0027] Figure 6 A schematic diagram of the sealing mechanism after installation;

[0028] Figure 7 This is a schematic diagram of the sealing mechanism;

[0029] Figure 8 This is an exploded view of the sealing mechanism.

[0030] The diagram shows the following components: 1. Frame; 2. Film roll; 3. Film feeding assembly; 4. First film pulling assembly; 5. Second film pulling assembly; 6. Cutting assembly; 7. Sealing mechanism; 8. Film pressing assembly; 9. Guide roller; 10. Tensioning roller; 11. Rotating roller; 12. Power source; 13. Support frame; 14. Movable frame; 15. Roller; 16. Cylinder; 17. Guide plate; 18. Guide groove; 19. Film frame; 20. Tensioning assembly; 21. Slot. 22. Clamping plate; 23. Film stopping assembly; 24. Membrane; 107. Slide rail; 108. Adjustment assembly; 109. Base; 110. Slider; 111. Sealing knife; 112. Fixed seat; 113. Notch; 114. Drive wheel; 115. Driven wheel; 116. Synchronous belt; 117. Adjustment power; 118. Upper cooling component; 119. Lower cooling component; 120. Heat sealing power; 121. Cooling assembly; 123. Connecting plate. Detailed Implementation

[0031] The present invention will be further described below with reference to the embodiments illustrated in the accompanying drawings:

[0032] Example 1

[0033] like Figure 1-5 As shown, a heavy film conveying device includes a frame 1. A film roll 2 for feeding film 24 is disposed on one side of the frame 1. A film holder 19 for mounting the film roll 2 is fixedly disposed on the lower end of the frame 1 away from the aforementioned film feeding assembly 3. Along the film feeding direction 24, the frame 1 is sequentially arranged with a film feeding assembly 3, a first film pulling assembly 4, a second film pulling assembly 5, and a cutter assembly 6 for cutting the film 24. The first film pulling assembly 4 is used to pull the film 24 longitudinally, and the second film pulling assembly 5 is used to feed the film 24 transversely. The first film pulling assembly 4 and the second film pulling assembly 5 are located at a right-angle turn on the film 24's movement path. Above the cutter assembly 6 is a film stopping assembly 23 for clamping and fixing the film 24. The film stopping assembly 23 includes two opposing clamping plates 22 for clamping the film 24. The clamping plates 22 move towards the other clamping plate 22 under the drive of a cylinder 16 to clamp the film 24. A sealing mechanism 7 for sealing the film 24 is movably disposed between the first film-pulling assembly 4 and the second film-pulling assembly 5. At least one set of film-pressing assemblies 8 for pressing the film 24 is disposed on the film-feeding assembly 3, the first film-pulling assembly 4, and the second film-pulling assembly 5. A plurality of guide rollers 9 for guiding the film 24 are fixedly disposed inside the frame 1. A tensioning roller 10 for tensioning the film 24 is movably disposed between the plurality of guide rollers 9. The guide rollers 9 and the tensioning roller 10 are located between the film-feeding assembly 3 and the first film-pulling assembly 4. A tensioning assembly 20 for adjusting the height of the tensioning roller 10 is disposed on the side wall of the frame 1. A slot 21 for engaging the tensioning roller 10 is provided on the side of the frame 1 away from the tensioning assembly 20. The tension of the film 24 during film feeding can be easily adjusted by adjusting the height of the tensioning roller 10. The film 24 is driven to move by the first film-pulling assembly 4 and the second film-pulling assembly 5 set before and after the sealing mechanism 7. The film 24 is subjected to uniform force during the overall movement, and the film-pulling process is smoother, which effectively ensures the stability of the finished product quality. Furthermore, by setting the sealing mechanism 7 between the first film-pulling assembly 4 and the second film-pulling assembly 5, the overall layout of the equipment is more reasonable and compact.

[0034] The film feeding assembly 3, the first film pulling assembly 4, and the second film pulling assembly 5 each include a rotating roller 11 rotatably mounted on the frame 1. A power source 12, which drives the rotating roller 11 to rotate and moves the film 24, is provided on one side of the rotating roller 11. The power source 12 is fixedly mounted on the side wall of the frame 1, and the film pressing assembly 8 is directly opposite the rotating roller 11. The power source 12 is a motor. The film pressing assembly 8 includes a bracket 13 fixedly mounted on the frame 1. A movable frame 14, directly opposite the rotating roller 11, is movably mounted on the bracket 13. Multiple rollers 15 are mounted on the movable frame 14 for pressing against the rotating roller 11. The axial direction of the rollers 15 is parallel to the axial direction of the rotating roller 11. A cylinder 16 is fixedly mounted on the bracket 13 for driving the movable frame 14 to move towards the rotating roller 11. After being pulled from the film roll 2 and passing through the film feeding assembly 3, the film 24 sequentially passes through the guide roller 9 and the tension roller 10 before entering the first film pulling assembly 4. It is then heat-sealed by the sealing mechanism 7, passes through the second film pulling assembly 5, and is clamped and fixed by the film stopping assembly 23. Finally, the film 24 is cut by the cutting assembly 6. During the film feeding process, the film 24 is pressed against the rotating roller 11 by the roller 15 to prevent jumping during feeding, thus ensuring greater stability.

[0035] The second film-pulling assembly 5 is provided with two sets of film-pressing assemblies 8. The two sets of film-pressing assemblies 8 are respectively located above the rotating roller 11 of the second film-pulling assembly 5 and on the side of the rotating roller 11 away from the first film-pulling assembly 4. Two guide plates 17 are provided between the film-pressing assembly 8 on the side of the second film-pulling assembly 5 away from the first film-pulling assembly 4 and the rotating roller 11 on the second film-pulling assembly 5 for guiding the film 24 and extending downward. A guide groove 18 is left between the two guide plates 17 for the film 24 to pass through. The film-pressing assembly 8 located on the side of the rotating roller 11 away from the first film-pulling assembly 4 and the guide plate 17 below guide the laterally moving film 24, so that the film 24 moves downward smoothly after changing direction and enters the film-stopping assembly 23. The first film-pulling assembly 4 pulls the film 24 upward, the second film-pulling assembly 5 pulls the film 24 laterally, and guides the film 24 downward through the guide plate 17 so that the film 24 enters the next process.

[0036] like Figure 6-8 As shown, the sealing mechanism 7 is movably mounted on the frame 1 via a slide rail 107, and the frame 1 is equipped with an adjustment component 108 for driving the sealing mechanism 7 to move between the first film-pulling assembly 4 and the second film-pulling assembly 5. Adjusting the position of the sealing mechanism 7 on the frame 1 via the adjustment component 108 allows for convenient adjustment of the required film length 24, making adjustment relatively easy and enabling the production of bags of various lengths. This provides wide applicability, strong versatility, and effective cost savings.

[0037] The sealing mechanism 7 includes a base 109, which is slidably mounted on the slide rail 107 via sliders 110 on both sides. A set of opposing sealing blades 111 are disposed within the base 109. A fixing seat 112 for supporting the film 24 is fixedly disposed within the base 109. The fixing seat 112 has a notch 113 for heat-sealing the film 24, located between the two sealing blades 111. The adjusting assembly 108 includes a driving wheel 114 and a driven wheel 115 rotatably mounted on the frame 1. A synchronous belt 116 is fitted onto the driving wheel 114 and driven wheel 115. The base 109 is fixedly mounted on the synchronous belt 116 via a connecting plate 123 and reciprocates along the slide rail 107 with the synchronous belt 116. An adjusting power source 117, which is a motor, is fixedly disposed on the frame 1 to drive the driving wheel 114 to rotate. During heat sealing, the membrane 24 moves on the fixed seat 112, and the sealing knife 111 moves toward the notch 113 until it abuts against both sides of the membrane 24, and heat seals the membrane 24.

[0038] The fixed base 112 is provided with an upper cooling component 118 and a lower cooling component 119 for blowing air to cool the notch 113. A heat-sealing power source 120, which is a cylinder, is fixedly mounted on the frame 1 to drive the sealing blade 111 towards the notch 113 on the fixed base 112. A cooling assembly 121 for cooling the heat-sealed film 24 is provided on the fixed base 112, located at the front end of the film 24 moving in the fixed base 112. After the sealing blade 111 heat-seales the film 24, it moves away from the film 24, and the upper cooling component 118 and lower cooling component 119 blow air to cool the contact area between the sealing blade 111 and the film 24, allowing the film 24 to smoothly detach from the sealing blade 111. The subsequent cooling assembly 121 further cools and lowers the temperature of the heat-sealed area of ​​the film 24.

[0039] Example 2

[0040] The difference from Embodiment 1 is that the sealing blade 111 is provided in two sets, the notch 113 has two openings, and the upper cooling component 118 and lower cooling component 119 are provided in two sets. Each set of sealing blades 111 corresponds one-to-one with the notch 113, upper cooling component 118, and lower cooling component 119. During heat sealing, the membrane 24 stops moving. After the first set of sealing blades 111 heat seals the membrane 24, it resets. By adjusting the power 117 to drive the sealing mechanism 7 to move, the second set of sealing blades 111 is positioned directly above the heat sealing area for a second heat sealing. After the second heat sealing is completed, the sealing blades 111 detach from the membrane 24, and the membrane 24 continues to move to complete the heat sealing.

[0041] Example 3

[0042] The difference from Example 2 is that, during the first heat sealing, the first set of sealing blades 111 heat seals the film 24 and then resets. After the sealing mechanism 7 is accelerated by adjusting the power 117, the second set of sealing blades 111 is aligned with the heat sealing area for a second heat sealing. After the second heat sealing is completed, the sealing blades 111 are separated from the film 24. During the heat sealing process, the film 24 is always in motion, and the sealing mechanism 7 moves synchronously with the film 24 during the heat sealing process under the drive of the adjusting power 117.

[0043] Example 4

[0044] The difference from Example 2 is that, during heat sealing, both sets of sealing blades 111 move simultaneously toward the film 24 to heat seal the film 24.

[0045] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications to the specification derived therefrom are still within the scope of protection of this invention.

Claims

1. A heavy film conveying device comprising a frame (1) provided on one side with a film roll (2) for a film (24), characterized in that The machine frame (1) is provided with a film feeding assembly (3), a first film pulling assembly (4), a second film pulling assembly (5) and a cutter assembly (6) for cutting the film (24) in sequence along the film feeding direction, a sealing mechanism (7) for sealing the film (24) is arranged between the first film pulling assembly (4) and the second film pulling assembly (5), at least one set of film pressing assemblies (8) for pressing the film (24) is arranged on the film feeding assembly (3) and the first film pulling assembly (4) respectively, two sets of film pressing assemblies (8) for pressing the film (24) are arranged on the second film pulling assembly (5), the first film pulling assembly (4) is used for pulling the film (24) in the longitudinal direction, the second film pulling assembly (5) is used for feeding the film (24) in the transverse direction, and the first film pulling assembly (4) and the second film pulling assembly (5) are located at the turning position of the film (24) moving path, the film feeding assembly (3), the first film pulling assembly (4) and the second film pulling assembly (5) respectively comprise a rotating roller (11) rotatably arranged on the machine frame (1), one side of the rotating roller (11) is provided with a power source (12) for driving the rotating roller (11) to rotate and driving the film (24) to move, the power source (12) is fixedly arranged on the side wall of the machine frame (1), and the film pressing assembly (8) faces the rotating roller (11), the film pressing assembly (8) comprises a support (13) fixedly arranged on the machine frame (1), an activity frame (14) facing the rotating roller (11) is movably arranged on the support (13), a plurality of rollers (15) for pressing on the rotating roller (11) are arranged on the activity frame (14), the axis of the roller (15) is parallel to the axis of the rotating roller (11), and the activity frame (14) can move towards the rotating roller (11), the two sets of film pressing assemblies (8) of the second film pulling assembly (5) are respectively located above the rotating roller (11) of the second film pulling assembly (5) and on the side of the rotating roller (11) away from the first film pulling assembly (4), the film pressing assembly (8) on the side of the second film pulling assembly (5) away from the first film pulling assembly (4) and the rotating roller (11) of the second film pulling assembly (5) are provided with two guide plates (17) for guiding the film (24) and extending downward, and a guide groove (18) for the film (24) to pass through is left between the two guide plates (17).

2. A heavy film delivery device according to claim 1, wherein A cylinder (16) for driving the activity frame (14) to move towards the rotating roller (11) is fixedly arranged on the support (13).

3. A heavy film delivery device according to claim 1, wherein The lower end of the rack (1) is fixedly provided with a film frame (19) for mounting the film roll (2) away from the film feeding assembly (3), a plurality of guide rollers (9) for guiding the film (24) are fixedly arranged in the rack (1), a tensioning roller (10) for tensioning the film (24) is movably arranged between the guide rollers (9), the guide rollers (9) and the tensioning roller (10) are located between the film feeding assembly (3) and the first film pulling assembly (4), a tensioning assembly (20) for adjusting the height position of the tensioning roller (10) is arranged on the side wall of the rack (1), and a clamping groove (21) for clamping the tensioning roller (10) is formed in the side of the rack (1) away from the tensioning assembly (20).

4. A heavy film delivery device according to claim 1, wherein The sealing mechanism (7) is movably arranged on the rack (1) through a sliding rail (107), and the rack (1) is provided with an adjusting assembly (108) for driving the sealing mechanism (7) to move between the first film pulling assembly (4) and the second film pulling assembly (5).

5. A heavy film delivery device according to claim 4, wherein, The sealing mechanism (7) comprises a base (109), the two sides of the base (109) are slidably arranged on the sliding rail (107) through a sliding block (110), at least one set of oppositely arranged sealing knives (111) is arranged in the base (109), a fixed seat (112) for supporting the film is fixedly arranged in the base (109), a notch (113) for heat sealing the film is formed in the fixed seat (112), and the notch (113) is located between the two sealing knives (111).

6. A heavy film delivery device according to claim 5, wherein The adjusting assembly (108) comprises a driving wheel (114) and a driven wheel (115) rotatably arranged on the rack (1), the driving wheel (114) and the driven wheel (115) are sleeved with a synchronous belt (116), the base (109) is fixedly arranged on the synchronous belt (116) through a connecting plate (123) and moves back and forth along the sliding rail (107) with the synchronous belt (116), and the rack (1) is fixedly provided with an adjusting power (117) for driving the driving wheel (114) to rotate.

7. A heavy film delivery device according to claim 5, wherein The fixed seat (112) is provided with an upper cooling member (118) and a lower cooling member (119) for blowing and cooling the notch (113), the notch (113) is formed in two, the upper cooling member (118) and the lower cooling member (119) are provided with two sets, and one set of the sealing knife (111), the notch (113), the upper cooling member (118) and the lower cooling member (119) correspond one by one.

8. A heavy film delivery device according to claim 5, wherein The rack (1) is fixedly provided with a heat sealing power (120) for driving the sealing knife (111) to move towards the notch (113) of the fixed seat (112), and the fixed seat (112) is provided with a cooling assembly (121) for cooling the film after heat sealing, and the cooling assembly (121) is located at the front end of the film moving direction on the fixed seat (112).

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