Heavy film conveying device

Abstract

The invention provides a heavy film conveying device. The problems that an existing device usually only uses one set of film pulling assembly to drive a rolled film to advance for a long distance, the stroke of the film from a film roll to a formed bag is too long, the weight of the film is heavy, the power is obviously insufficient when one set of film pulling assembly is used for driving, and film walking is not smooth are solved. The film feeding assembly, the first film pulling assembly, the second film pulling assembly and the cutter assembly used for cutting off the rolled film are sequentially arranged on the rack in the film feeding direction, the sealing mechanism used for sealing the rolled film is arranged between the first film pulling assembly and the second film pulling assembly, and the overall layout is more reasonable; the roll film is driven to move through the first film pulling assembly and the second film pulling assembly which are arranged in front of and behind the sealing mechanism, the roll film is evenly stressed in the overall moving process, the film pulling process is smoother, and the stability of the finished product quality is effectively guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging, and particularly relates to a heavy film conveying device. Background Art

[0002] With the development of the economy, people's requirements for products lie not only in quality but also in the outer packaging of products. Good outer packaging can gain the favor of more consumers. Most outer packaging needs to use outer bag films for packaging. During the process of the film advancing, a film pulling assembly is required to pull the film. Existing equipment usually only uses a set of film pulling assemblies to drive the film to travel a long distance. The travel of the film from the film roll to being formed into a bag is too long, and the film itself is relatively heavy. When driven by a set of film pulling assemblies, the power is significantly insufficient, and the film feeding is not smooth. There are areas for improvement in the prior art. Summary of the Invention

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

[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 the turning point on the film moving path.

[0005] Preferably, the film feeding assembly, the first film pulling assembly, and the second film pulling assembly respectively include a rotating roller rotatably arranged on the frame. A power source for driving the rotating roller to rotate and drive the film to move is arranged on one side of the rotating roller. The power source is fixedly arranged on the side wall of the frame, and the above-mentioned film pressing assembly faces the rotating roller.

[0006] Preferably, the film pressing assembly includes a bracket fixedly arranged on the frame. An activity frame facing the rotating roller is movably arranged on the bracket. A plurality of rollers for pressing against the above-mentioned rotating roller are arranged on the activity frame, and the axial direction of the rollers is parallel to the axial direction of the above-mentioned rotating roller.

[0007] Preferably, a cylinder for driving the activity frame to move towards the rotating frame direction is fixedly arranged on the bracket.

[0008] Preferably, two sets of film pressing assemblies are arranged on the second film pulling assembly, and the two sets of film pressing assemblies are respectively located above the rotating roller of the second film pulling assembly and on the side of the rotating roller away from the above-mentioned first film pulling assembly.

[0009] Preferably, there are two guiding plates for guiding the film and extending downwardly disposed between the film pressing assembly on the side of the second film pulling assembly away from the first film pulling assembly and the first film pulling assembly, and a guiding groove for the film to pass through is left between the two guiding plates.

[0010] Preferably, a film rack for mounting a film roll is fixedly provided on one side of the lower end of the frame away from the film feeding assembly.

[0011] Preferably, a plurality of guiding rollers for guiding the film are fixedly provided in the frame, and a tensioning roller for tensioning the film is movably disposed between the plurality of guiding rollers, and the guiding roller and the tensioning roller are located between the film feeding assembly and the first film pulling assembly.

[0012] Preferably, a tensioning assembly for adjusting the height position of the tensioning roller is provided on the side wall of the frame, and a clamping groove for clamping the tensioning roller is provided on the side of the frame away from the tensioning assembly.

[0013] Preferably, a film stopping assembly for clamping and fixing the film is provided above the cutter assembly, the film stopping assembly includes two clamping plates disposed opposite to each other for clamping the film, and 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 provided on the frame through a slide rail, and an adjusting assembly for driving the sealing mechanism to move between the first film pulling assembly and the second film pulling assembly is provided on the frame.

[0015] Preferably, the sealing mechanism includes a base, the two sides of the base are slidably provided on the slide rail through sliders, at least one set of sealing knives disposed opposite to each other is provided in the base, a fixing seat for supporting the film is fixedly provided in the base, a notch for thermally sealing the film is provided on the fixing seat, and the notch is located between the two sealing knives.

[0016] Preferably, the adjusting assembly includes a driving wheel and a driven wheel rotatably provided on the frame, a synchronous belt is sleeved on the driving wheel and the driven wheel, the base is fixedly provided on the synchronous belt through a connecting plate and reciprocally moves along the slide rail with the synchronous belt, and an adjusting power for driving the driving wheel to rotate is fixedly provided on the frame.

[0017] Preferably, an upper cooling member and a lower cooling member for blowing and cooling the notch are provided on the fixing seat.

[0018] Preferably, a heat sealing power for driving the sealing knife to move towards the notch on the fixing seat is fixedly provided on the frame.

[0019] Preferably, a cooling assembly for cooling the film after heat sealing is provided on the fixing base, and the cooling assembly is located at the front end of the fixing base in the film moving direction.

[0020] Preferably, there are two sets of sealing knives, two notches are provided, and two sets of upper cooling members and lower cooling members are provided. One set of sealing knives corresponds to the notch, the upper cooling member, and the lower cooling member one by one.

[0021] Compared with the prior art, in the present invention, the first film pulling assembly and the second film pulling assembly arranged before and after the sealing mechanism drive the film to move, and the film is uniformly stressed during the overall movement process, and the film pulling process is smoother, effectively ensuring the stability of the finished product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic structural diagram in the direction of the second film pulling assembly; Figure 3 is a schematic structural diagram at the first film pulling assembly; Figure 4 is a schematic structural diagram at the second film pulling assembly; Figure 5 is a side view of the present invention; Figure 6 is a schematic structural diagram after the sealing mechanism is installed; Figure 7 is a schematic structural diagram of the sealing mechanism; Figure 8 is an exploded view of the sealing mechanism.

[0023] Reference numerals in the drawings: 1, frame; 2, film roll; 3, film feeding assembly; 4, first film pulling assembly; 5, second film pulling assembly; 6, cutting knife assembly; 7, sealing mechanism; 8, film pressing assembly; 9, guiding roller; 10, tensioning roller; 11, rotating roller; 12, power source; 13, bracket; 14, movable frame; 15, roller; 16, cylinder; 17, guiding plate; 18, guiding groove; 19, film rack; 20, tensioning assembly; 21, clamping groove; 22, clamping plate; 23, film stopping assembly; 24, film; 107, slide rail; 108, adjusting assembly; 109, base; 110, slider; 111, sealing knife; 112, fixing base; 113, notch; 114, driving wheel; 115, driven wheel; 116, synchronous belt; 117, adjusting power; 118, upper cooling member; 119, lower cooling member; 120, heat sealing power; 121, cooling assembly; 123, connecting plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The present invention will be further described below with reference to the embodiments shown in the drawings: Embodiment 1

[0025] As shown Figures 1-5 in the figure, a double-film conveying device includes a frame 1. On one side of the frame 1, there is a film roll 2 for supplying film 24. On the side of the lower end of the frame 1 far from the above-mentioned film feeding assembly 3, there is fixedly arranged a film rack 19 for installing the film roll 2. Along the film feeding 24 direction on the frame 1, there are successively arranged 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 for longitudinally pulling the film 24, and the second film pulling assembly 5 is used for laterally feeding the film 24. And the first film pulling assembly 4 and the second film pulling assembly 5 are located at the right-angle turning of the moving path of the film 24. Above the cutter assembly 6, there is a film stopping assembly 23 for clamping and fixing the film 24. The film stopping assembly 23 includes two oppositely arranged 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 and clamp the film 24. Between the first film pulling assembly 4 and the second film pulling assembly 5, there is movably arranged a sealing mechanism 7 for sealing the film 24. On the film feeding assembly 3, the first film pulling assembly 4 and the second film pulling assembly 5, there are respectively at least one set of film pressing assemblies 8 for pressing the film 24. Inside the frame 1, there are fixedly arranged several guiding rollers 9 for guiding the film 24. Between the plurality of guiding rollers 9, there is movably arranged a tensioning roller 10 for tensioning the film 24. The guiding rollers 9 and the tensioning roller 10 are located between the above-mentioned film feeding assembly 3 and the first film pulling assembly 4. On the side wall of the frame 1, there is a tensioning assembly 20 for adjusting the height position of the above-mentioned tensioning roller 10. On the side of the frame 1 far from the tensioning assembly 20, there is a clamping groove 21 for clamping the above-mentioned tensioning roller 10. By adjusting the height of the tensioning roller 10, the tension degree of the film 24 during the film running process can be realized, and the adjustment can be conveniently carried out. The film 24 is driven to move by the first film pulling assembly 4 and the second film pulling assembly 5 arranged before and after the sealing mechanism 7. The film 24 is uniformly stressed during the overall movement process, and the film pulling 24 process is smoother, effectively ensuring the stability of the finished product quality. And by arranging 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.

[0026] 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 arranged on the frame 1. A power source 12 for driving the rotating roller 11 to rotate and driving the film 24 to move is arranged on one side of the rotating roller 11. The power source 12 is fixedly arranged on the side wall of the frame 1, and the above-mentioned film pressing assembly 8 faces the rotating roller 11. The power source 12 is a motor. The film pressing assembly 8 includes a bracket 13 fixedly arranged on the frame 1. An activity frame 14 facing the rotating roller 11 is movably arranged on the bracket 13. A plurality of rollers 15 for pressing against the rotating roller 11 are arranged on the activity frame 14. The axial direction of the roller 15 is parallel to the axial direction of the rotating roller 11. A cylinder 16 for driving the activity frame 14 to move towards the rotating frame is fixedly arranged on the bracket 13. The film 24 is pulled out from the film roll 2, passes through the film feeding assembly 3, then passes through the guiding roller 9 and the tensioning roller 10 in sequence, enters the first film pulling assembly 4, is heat-sealed to the film 24 by the sealing mechanism 7, passes through the second film pulling assembly 5, and then is clamped and fixed by the film stopping assembly 23, and the film 24 is cut by the cutter assembly 6. During the film running process of the film 24, the film 24 is pressed against the rotating roller 11 by the rollers 15 to prevent the film 24 from jumping during the film running process, and the film running process is more stable.

[0027] Two groups of film pressing assemblies 8 are arranged on the second film pulling assembly 5. The two groups 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 guiding plates 17 for guiding the film 24 and extending downward are arranged 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 first film pulling assembly 4. A guiding groove 18 for the film 24 to pass through is left between the two guiding plates 17. The film 24 moving horizontally is guided by the film pressing assembly 8 on the side of the rotating roller 11 away from the first film pulling assembly 4 and the lower guiding plate 17, 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 horizontally, and the film 2 is guided by the guiding plate 17 so that the film 24 moves downward and enters the next process.

[0028] As Figures 6-8 shown, the sealing mechanism 7 is movably arranged on the frame 1 through a slide rail 107, and 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 is arranged on the frame 1. By adjusting the position of the sealing mechanism 7 on the frame 1 through the adjusting assembly 108, the length of the film 24 required can be conveniently adjusted. The adjustment is relatively convenient, bags of various lengths can be obtained, the application range is wide, the versatility is strong, and the cost is effectively saved.

[0029] The sealing mechanism 7 includes a base 109. Both sides of the base 109 are slidably arranged on the above-mentioned slide rails 107 through sliders 110. A set of sealing knives 111 arranged oppositely are provided inside the base 109. A fixed seat 112 for supporting the film 24 is fixedly arranged inside the base 109. A notch 113 for heat-sealing the film 24 is formed on the fixed seat 112, and the notch 113 is located between the two sealing knives 111. The adjusting assembly 108 includes a driving wheel 114 and a driven wheel 115 rotatably arranged on the frame 1. A synchronous belt 116 is sleeved on the driving wheel 114 and the driven wheel 115. The above-mentioned base 109 is fixedly arranged on the synchronous belt 116 and reciprocates along the slide rail 107 with the synchronous belt 116. An adjusting power 117 for driving the rotation of the driving wheel 114 is fixedly arranged on the frame 1, and the adjusting power 117 is a motor. During heat-sealing, the film 24 moves on the fixed seat 112, and the oppositely arranged sealing knives 111 move towards the notch 113 until they abut against both sides of the film 24 and heat-seal the film 24.

[0030] An upper cooling member 118 and a lower cooling member 119 for blowing air to cool the notch 113 are arranged on the fixed seat 112. A heat-sealing power 120 for driving the sealing knives 111 to move towards the notch 113 on the fixed seat 112 is fixedly arranged on the frame 1, and the heat-sealing power 120 is a cylinder. A cooling assembly 121 for cooling the film 24 after heat-sealing is arranged on the fixed seat 112, and the cooling assembly 121 is located at the front end of the moving direction of the film 24 on the fixed seat 112. After the sealing knives 111 heat-seal the film 24, the sealing knives 111 move away from the film 24, and the upper cooling member 118 and the lower cooling member 119 blow air to cool the contact position between the sealing knives 111 and the film 24, so that the film 24 can be smoothly separated from the sealing knives 111, and the subsequent cooling assembly 121 further cools and lowers the temperature of the heat-sealed part of the film 24. Embodiment 2

[0031] The difference from Embodiment 1 is that two groups of sealing knives 111 are provided, two notches 113 are formed, and two groups of upper cooling members 118 and lower cooling members 119 are provided. One group of sealing knives 111 corresponds to the notch 113, the upper cooling member 118, and the lower cooling member 119 one by one. During heat-sealing, the film 24 stops moving. After the first group of sealing knives 111 heat-seal the film 24 and reset, the sealing mechanism 7 is driven to move by the adjusting power 117 so that the second group of sealing knives 111 are aligned with the heat-sealed part for secondary heat-sealing. After the secondary heat-sealing is completed, the sealing knives 111 are separated from the film 24, and the film 24 continues to move to complete heat-sealing. Embodiment 3

[0032] The difference from Example 2 is that after the first heat seal, the first set of sealing knives 111 reset after heat-sealing the film 24. By adjusting the power 117 to drive the sealing mechanism 7 to move forward at an accelerated speed, the second set of sealing knives 111 is aligned with the heat-sealed area for the second heat seal. After the second heat seal is completed, the sealing knives 111 are separated from the film 24. During the heat-sealing process, the film 24 is always in a moving process, and the sealing mechanism 7 moves synchronously with the film 24 under the drive of the adjusting power 117 during the heat-sealing process. Example 4

[0033] The difference from Example 2 is that during heat-sealing, the two sets of sealing knives 111 move towards the film 24 simultaneously to heat-seal the film 24.

[0034] Obviously, the above examples are only for illustration and are not intended to limit the implementation. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. The obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A heavy film conveying device, comprising a frame (1), a film roll (2) for supplying film (24) being arranged on one side of the frame (1), characterized in that: The 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 (24); a sealing mechanism (7) for sealing the film (24) is provided between the first film pulling assembly (4) and the second film pulling assembly (5); and at least one group of film pressing assemblies (8) for pressing the film (24) are respectively provided on the film feeding assembly (3), the first film pulling assembly (4) and the second film pulling assembly (5).

2. A heavy film conveying device according to claim 1, characterized in that: The first film-pulling assembly (4) is used to pull the film (24) in the longitudinal direction, and the second film-pulling assembly (5) is used to feed the film (24) in the transverse direction, and the first film-pulling assembly (4) and the second film-pulling assembly (5) are located at a turning point on the film (24) moving path, and the film feeding assembly (3), the first film-pulling assembly (4) and the second film-pulling assembly (5) respectively include a rotating roller (11) rotatably arranged on the frame (1), and a power source (12) for driving the rotating roller (11) to rotate and drive the film (24) to move is arranged on one side of the rotating roller (11), and the power source (12) is fixedly arranged on the side wall of the frame (1), and the above-mentioned film pressing assembly (8) is opposite to the rotating roller (11).

3. A heavy film conveying device according to claim 2, characterized in that: The film pressing assembly (8) comprises a bracket (13) fixedly mounted on a frame (1), a movable frame (14) movably mounted on the bracket (13) and facing the rotating roller (11), a plurality of rollers (15) for pressing against the rotating roller (11) are mounted on the movable frame (14), the axial direction of the rollers (15) is parallel to the axial direction of the rotating roller (11), and a cylinder (16) for driving the movable frame (14) to move toward the rotating frame is fixedly mounted on the bracket (13).

4. A heavy film conveying device according to claim 3, characterized in that: The second film-drawing assembly (5) is provided with two groups of film-pressing assemblies (8), and the two groups of film-pressing assemblies (8) are respectively located above the rotating roller (11) of the second film-drawing assembly (5) and on the side of the rotating roller (11) away from the first film-drawing assembly (4). Two guide plates (17) for guiding the film (24) and extending downward are provided between the film-pressing assembly (8) on the side of the second film-drawing assembly (5) away from the first film-drawing assembly (4) and the first film-drawing assembly (4), and a guide groove (18) for the film (24) to pass through is reserved between the two guide plates (17).

5. A heavy film conveying device according to claim 4, characterized in that: A film frame (19) for mounting a film roll (2) is fixedly arranged at a side of the lower end of the frame (1) away from the film delivery assembly (3); a plurality of guide rollers (9) for guiding the film (24) are fixedly arranged inside the frame (1); a tensioning roller (10) for tensioning the film (24) is movably arranged between the plurality of guide rollers (9); the guide roller (9) and the tensioning roller (10) are located between the film delivery 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 frame (1); and a slot (21) for clamping the tensioning roller (10) is provided on a side of the frame (1) away from the tensioning assembly (20).

6. A heavy film conveying device according to claim 1 or 2, characterized in that: The sealing mechanism (7) is movably arranged on the frame (1) via a slide rail (107), and an adjusting component (108) is arranged on the frame (1) for driving the sealing mechanism (7) to move between the first film-pulling component (4) and the second film-pulling component (5).

7. A heavy film conveying device according to claim 6, characterized in that: The sealing mechanism (7) comprises a base (109), the two sides of which are slidably arranged on the slide rails (107) via sliders (110), at least one set of sealing knives (111) arranged opposite to each other 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 provided on the fixed seat (112), and the notch (113) is located between the two sealing knives (111).

8. A heavy film conveying device according to claim 7, characterized in that: The adjustment component (108) comprises a driving wheel (114) and a driven wheel (115) rotatably arranged on a frame (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) via a connecting plate (123) and reciprocates along the slide rail (107) along with the synchronous belt (116); and an adjustment power (117) for driving the driving wheel (114) to rotate is fixedly arranged on the frame (1).

9. A heavy film conveying device according to claim 7, characterized in that: An upper cooling member (118) and a lower cooling member (119) for blowing air to cool the notch (113) are arranged on the fixing seat (112); two notches (113) are provided, and two groups of the upper cooling member (118) and the lower cooling member (119) are arranged, and one group of the sealing knife (111) corresponds to the notch (113), the upper cooling member (118), and the lower cooling member (119) one by one.

10. A heavy film conveying device according to claim 7, characterized in that: A heat-sealing power (120) is fixedly arranged on the frame (1) for driving the sealing knife (111) to move in the direction of the notch (113) on the fixed seat (112); a cooling component (121) for cooling the film after heat sealing is arranged on the fixed seat (112); the cooling component (121) is located at the front end of the fixed seat (112) in the direction of film movement.

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