A film packaging machine and a cutting mechanism thereof

Abstract

The utility model discloses a cutting mechanism of film packaging machine, including work table, locating part and seal cutting part, locating part includes first locating piece and second locating piece, and both opposite seal station before and after setting, and both are on work table opposite seal station horizontal movement, and seal cutting part includes heat seal ring and the heat seal pad of cooperation with heat seal ring, the heat seal mouth of heat seal ring is downward and presents round, heat seal ring opposite heat seal pad up and down lift. The locating part pushes product to seal station, and first locating piece and second locating piece make product position accurate, and the heat seal ring of seal cutting part moves down and cooperates heat seal pad and seals and cuts thin film, forms round seal edge, and is matched with round product, like this after the heating of heat shrinkage stove, thin film is wrapped tightly with product, surface is in harmony, compact, and there is no extra thin film, and the packing effect is good, and the appearance is more beautiful, and one completes seal cutting, and the efficiency is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of film packaging, specifically to film packaging machine and its cutting mechanism. BACKGROUND

[0002] The product is heated by the film packaging through the heat shrinkage oven, and the film is wrapped tightly around the product, so that the appearance of the packaged product can be fully displayed, the product's exhibition performance is improved, and the product's appearance and value are increased.

[0003] The existing film packaging machine includes longitudinal sealing and transverse sealing, such as the utility model patent with the publication number CN222203128U and the invention name "pillow type sealing and cutting shrinkage machine", which realizes that the film is wrapped around the product through longitudinal sealing and transverse sealing. The longitudinal sealing and transverse sealing are divided into two processes, and the processing cost is high. Most importantly, the sealed and cut film is square, and the packaging film is not comfortable for the circular product. The four excess corners of the packaging film affect the appearance, resulting in poor packaging effect. SUMMARY

[0004] In view of the technical problems in the background art, the technical problems solved by the utility model are to provide a film packaging machine for circular product packaging and its cutting mechanism, which is beautiful and has good effect.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme: the cutting mechanism of the film packaging machine, characterized by comprising a workbench, a positioning component and a sealing and cutting component,

[0006] The positioning component comprises a first positioning piece and a second positioning piece, which are arranged before and after the sealing station and horizontally move relative to the sealing station on the workbench.

[0007] The sealing and cutting component comprises a heat sealing ring and a heat sealing pad matched with the heat sealing ring. The heat sealing port of the heat sealing ring faces downward and is circular. The heat sealing ring rises and falls relative to the heat sealing pad.

[0008] The positioning component pushes the product to the sealing station, and the first positioning piece and the second positioning piece accurately position the product. The heat sealing ring of the sealing and cutting component moves downward and cooperates with the heat sealing pad to seal and cut the film, forming a circular sealing edge that matches the circular product. After heating by the heat shrinkage oven, the film is wrapped tightly around the product, the surface is comfortable and compact, there is no excess film, the packaging effect is good, and the appearance is more beautiful. Moreover, the sealing and cutting are completed at one time, and the efficiency is high.

[0009] As a preferred, the first positioning piece and the second positioning piece are both provided with a positioning groove for the product to enter. The front end and the rear end of the circular product enter the two positioning grooves and are clamped and positioned by the first positioning piece and the second positioning piece, so that the positioning is accurate.

[0010] As preferred, the first positioning member comprises a moving plate and a first stopper and a second stopper installed on the moving plate, and the three form a positioning slot; the opposite faces of the first stopper and the second stopper are bevels, so that the opening of the positioning slot is larger, and the front end and the rear end of the circular product enter the positioning slot formed by the first stopper and the second stopper, the positioning member has simple structure and good positioning effect.

[0011] As preferred, the workbench has a circular through hole, and the heat sealing pad is annular and embedded in the through hole; the product after cutting and sealing is discharged downward from the through hole, and the heat sealing pad embedded in the through hole gives way to the product, avoiding affecting the product from entering the sealing station.

[0012] The heat sealing pad is a rubber pad. It has high elasticity and stable pressure combination with the heat sealing ring.

[0013] As preferred, the cutting and sealing part further comprises a material pressing member that moves up and down, and when the material pressing member moves up and down relative to the heat sealing ring for cutting and sealing, the bottom of the material pressing member is higher than the heat sealing port of the heat sealing ring. After cutting and sealing, the material pressing member pushes the product away from the waste.

[0014] As preferred, the cutting and sealing part further comprises a lifting plate that moves up and down, a limiting plate is installed below the lifting plate, a stand is installed on the heat sealing ring, a guide hole is provided on the lifting plate and the limiting plate for the stand to pass through, the upper end of the stand passes through the guide hole and is connected with a locking member above the lifting plate, a spring is provided outside the stand, and the spring is arranged between the limiting plate and the material pressing member. When cutting and sealing, the lifting plate moves downward with the heat sealing ring, the heat sealing ring is pressed with the heat sealing pad, the lifting plate continues to move downward and pushes the limiting plate, the spring is compressed, the pressing force of the heat sealing ring and the heat sealing pad is increased, and the film cutting and sealing is completed.

[0015] As preferred, the lower part of the workbench is provided with an output member, and the output member comprises a first conveying belt for longitudinal conveying. The product falls on the first conveying belt through the through hole and is sent to the next process by the first conveying belt.

[0016] A film packaging machine, characterized in that it comprises a cutting mechanism, the cutting mechanism comprises a workbench, a positioning member and a cutting and sealing part,

[0017] The positioning member comprises a first positioning member and a second positioning member, which are arranged in front of and behind the sealing station respectively, and which move horizontally on the workbench relative to the sealing station;

[0018] The cutting and sealing part comprises a heat sealing ring and a heat sealing pad matched with the heat sealing ring, the heat sealing port of the heat sealing ring faces downward and is circular, and the heat sealing ring moves up and down relative to the heat sealing pad.

[0019] As preferred, it further comprises a film conveying mechanism, a material conveying mechanism and the cutting mechanism,

[0020] The film conveying mechanism comprises a material feeding frame, an upper guide rod set, a lower guide rod set and a waste material winding shaft, the upper film enters the sealing station through the upper guide rod set, and the lower film enters the sealing station through the lower guide rod set.

[0021] The material conveying mechanism further comprises a second conveying belt, the discharging station of the second conveying belt is connected with the workbench, and the first positioning member horizontally pushes the product in the discharging station of the second conveying belt into the sealing station of the workbench.

[0022] The waste material winding shaft is driven to wind and also functions as traction of the film, so that the upper film and the lower film enter the sealing station, and the product entering the sealing station is arranged between the upper film and the lower film.

[0023] Preferably, the second conveying belt is transversely conveyed.

[0024] The material feeding frame is provided with a slitting cutter, the film is longitudinally slitted to form the upper film and the lower film, and the equipment cost is reduced.

[0025] The upper film and the lower film enter the sealing station longitudinally, and the conveying direction of the upper film and the lower film entering the sealing station is consistent with the pushing direction of the first positioning member. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a front view schematic diagram of the utility model.

[0027] Figure 2 It is a top view schematic diagram of the utility model.

[0028] Figure 3 It is a left view schematic diagram of the utility model.

[0029] Figure 4 It is a schematic diagram of the sealing and cutting component of the utility model.

[0030] Figure 5 It is a schematic diagram of the first positioning member of the utility model.

[0031] Fig. 1 is a sealing and cutting component; 2 is an upper guide rod set; 3 is a lower guide rod set; 4 is an upper film; 5 is a lower film; 6 is waste material; 7 is a waste material winding shaft; 8 is a first conveying belt; 9 is a second conveying belt; 10 is a workbench; 11 is a first positioning member; 12 is a second positioning member; 13 is a through hole; 14 is a heat sealing pad; 15 is a heat sealing ring; 16 is a pressing member; 17 is a locking member; 18 is a lifting plate; 19 is a vertical column; 20 is a limiting plate; 21 is a spring; 22 is a moving plate; 23 is a first stop block; 24 is a second stop block; 25 is an inclined surface; 26 is a material feeding frame; 27 is a slitting cutter. DETAILED DESCRIPTION

[0032] The relevant details and working principles of the embodiments and examples of the utility model will be described below in combination with the drawings.

[0033] The film packaging machine comprises a cutting mechanism, the cutting mechanism comprises a workbench 10, a positioning component and a sealing and cutting component 1, the positioning component comprises a first positioning piece 11 and a second positioning piece 12, the first positioning piece 11 and the second positioning piece 12 are arranged opposite to each other in front of and behind the sealing station and horizontally move on the workbench 10 relative to the sealing station, the first positioning piece 11 pushes the product to move towards the sealing station, the second positioning piece 12 also moves towards the sealing station, and the first positioning piece 11 and the second positioning piece 12 are close to each other and accurately push the product to the sealing station. The sealing and cutting component 1 comprises a heat sealing ring 15 and a heat sealing pad 14 matched with the heat sealing ring, the heat sealing ring 15 is downwardly provided with a heat sealing opening in a circular shape, and the inner diameter of the heat sealing opening is larger than the outer diameter of the product, and the heat sealing ring is vertically lifted relative to the heat sealing pad. The heat sealing ring can be directly heated by an electric heating wire or heated by a heat source through heat transfer. The film at the sealing station covers the product in the sealing station upwardly and downwardly, the heat sealing ring 15 is lowered to be pressed against the heat sealing pad 14, so that the film is melted and bonded together, sealing and cutting are realized, and a circular sealing edge is formed, the circular sealing edge of the packaging film is matched with the circular product, so that after heating in a heat shrinkage furnace, the film is tightly wrapped around the product, the surface is smooth and compact, there is no excess film, the packaging effect is good, and the appearance is more beautiful. Moreover, the sealing and cutting are completed at one time, the speed is high, and the efficiency is high.

[0034] The first positioning piece 11 not only plays a role of pushing the product, but also cooperates with the second positioning piece 12 to accurately push the product to the sealing station. The first positioning piece and the second positioning piece are both provided with a positioning groove 28 for the product to enter, the front end and the rear end of the circular product enter the two positioning grooves and are clamped and positioned by the first positioning piece and the second positioning piece, so that the positioning is accurate. As shown in the accompanying drawings, Figure 5 The first positioning piece and the second positioning piece comprise a moving plate 22 and a first stop block 23 and a second stop block 24 mounted on the moving plate, the three form the positioning groove, the arc surface of the product enters the positioning groove and contacts the first stop block and the second stop block, and the first stop block 23 and the second stop block 24 play a role of limiting; the opposite surfaces of the first stop block and the second stop block are inclined surfaces 25, so that the opening of the positioning groove 28 is larger, the positioning piece has simple structure, good positioning effect and wide application range.

[0035] The workbench 10 is provided with a circular through hole 13, the heat sealing pad 14 is annular and embedded in the through hole 13, the product after sealing and cutting can be discharged downwardly from the through hole 13, the heat sealing pad is embedded in the through hole to give way to the product, so as to avoid affecting the product from entering the sealing station. The heat sealing pad is a rubber pad and has high elasticity, so that the heat sealing pad is tightly pressed against the heat sealing ring.

[0036] The sealing and cutting component 1 further comprises a pressing piece 16 which is vertically movable, and the pressing piece is vertically movable relative to the heat sealing ring 15. During sealing and cutting, the bottom of the pressing piece is higher than the heat sealing mouth of the heat sealing ring. After sealing and cutting, the pressing piece 16 is lowered relative to the heat sealing ring 15 and pushes the product, so that the product is completely separated from the waste 6. The pressing piece and the heat sealing ring can adopt two power sources, so that the control is facilitated. The sealing and cutting component 1 further comprises a lifting plate 18 which is vertically movable, and a limiting plate 20 is arranged below the lifting plate. The heat sealing ring 15 is provided with a vertical column 19. The limiting plate 20 and the lifting plate 18 are provided with guide holes through which the vertical column passes. The upper end of the vertical column 19 is connected with a locking piece 17 arranged above the lifting plate through the guide holes. A spring 21 is arranged outside the vertical column 19 and between the limiting plate and the pressing piece. The lifting plate 18 is lowered with the heat sealing ring 15. The heat sealing ring is first combined with the heat sealing pad 14, so that the heat sealing position is determined. The lifting plate is continuously lowered, and the limiting plate 20 is pushed to be lowered. The spring 21 is compressed, the heat sealing ring is pressed against the heat sealing pad, the pressing force of the heat sealing ring and the heat sealing pad is increased, the film sealing and cutting are completed, and then the lifting plate is lifted with the heat sealing ring to be reset.

[0037] The lower portion of the workbench 10 is provided with an output component. The output component comprises a first conveying belt 8 which is longitudinally movable. The product falls on the first conveying belt 8 through the through hole 13 and is conveyed to the next process by the first conveying belt.

[0038] The film packaging machine further comprises a film conveying mechanism and a material conveying mechanism. The film conveying mechanism comprises a film feeding frame 26, an upper guide rod set, a lower guide rod set and a waste winding shaft 7. The upper film 4 enters the sealing station through the upper guide rod set 2, the lower film 5 enters the sealing station through the lower guide rod set 3, and the waste winding shaft intermittently winds the waste 6 after sealing and cutting, and simultaneously functions as traction of the film, so that the upper film 4 and the lower film 5 enter the sealing station. A traction roller can also be arranged to traction the film. The material conveying mechanism further comprises a second conveying belt 9 which is transversely movable. The product in the discharging station of the second conveying belt 9 is pushed into the sealing station of the workbench 10 by the first positioning piece 11. The film feeding frame 26 is provided with a slitting cutter 27. The film is longitudinally cut into the upper film 4 and the lower film 5 by the slitting cutter 27. The upper film 4 enters the sealing station through the upper guide rod set 2, the lower film 5 enters the sealing station through the lower guide rod set 3, and the upper film and the lower film enter the sealing station longitudinally. The conveying direction of the upper film and the lower film entering the sealing station is consistent with the pushing direction of the first positioning piece 11, so that the film and the product more smoothly enter the sealing station.

[0039] The movement and lifting of the components of the utility model can be driven by motors, cylinders and other power components.

[0040] The working principle of the preferred embodiment is further illustrated below with reference to the drawings: the film roll is placed on the feeding frame 26, the film is cut by the slitting knife 27, and the film is cut into the upper film 4 and the lower film 5, the upper film is guided into the sealing station by the upper guide rod group, the lower film is guided into the sealing station by the lower guide rod group, and the two form a product inlet between the discharging station and the sealing station. The second conveying belt 9 sends the product to the discharging station, the discharging station corresponds to the sealing station in the longitudinal direction, the first positioning member 11 and the second positioning member 12 move towards each other, the first positioning member pushes the product in the discharging station to move towards the sealing station, the product enters between the upper film 4 and the lower film 5, and the product is stopped by the second positioning member until the product is limited in the sealing station by the first positioning member 11 and the second positioning member 12, the first positioning member 11 and the second positioning member 12 move reversely to reset and exit the sealing station. The lifting plate 18 moves downward, the heat sealing ring 15 is pressed with the heat sealing pad 14, the heat sealing ring covers the product, and the upper film and the lower film are heat sealed to form a film bag, the film bag after sealing and cutting contains the product and has a circular sealing edge, the pressing member 16 moves downward and pushes the product, the packaged product passes through the through hole 13 and falls on the first conveying belt 8, and the packaged product is output by the first conveying belt 8. After sealing and cutting, the heat sealing ring 15 and the pressing member 16 move upward to reset, the film waste 6 after sealing and cutting is not disconnected with the film roll, the waste winding shaft 7 rotates, winds the waste 6 and pulls the film, and the next upper film 4 and the next lower film 5 are pulled to the sealing station.

Claims

1. A cutting mechanism for a film packaging machine, characterized by: The cutting mechanism comprises a workbench, a positioning component and a sealing and cutting component, The positioning component comprises a first positioning member and a second positioning member, which are arranged opposite to each other in front of and behind the sealing station and horizontally move on the workbench relative to the sealing station. The sealing and cutting component comprises a heat sealing ring and a heat sealing pad matched with the heat sealing ring, the heat sealing ring has a downward circular heat sealing mouth, and the heat sealing ring is vertically lifted relative to the heat sealing pad.

2. The cutting mechanism of a film packaging machine according to claim 1, characterized in that: The first positioning member and the second positioning member are both provided with a positioning groove for the product to enter.

3. The cutting mechanism of a film packaging machine according to claim 2, characterized in that: The first positioning member comprises a moving plate, a first stopper and a second stopper installed on the moving plate, and the three form the positioning groove, and the opposite surfaces of the first stopper and the second stopper are inclined surfaces.

4. The cutting mechanism of a film packaging machine according to claim 1, characterized in that: The workbench has a circular through hole, and the heat sealing pad is annular and embedded in the through hole. The heat sealing pad is a rubber pad.

5. The film packaging machine cutting mechanism of claim 1, wherein: The sealing and cutting component further comprises a vertically lifting pressing member, and the pressing member is vertically lifted relative to the heat sealing ring. During sealing and cutting, the bottom of the pressing member is higher than the heat sealing mouth of the heat sealing ring.

6. The film packaging machine cutting mechanism of claim 1, wherein: The sealing and cutting component further comprises a lifting plate vertically lifted, and a limiting plate is installed below the lifting plate, a vertical column is installed on the heat sealing ring, the limiting plate and the lifting plate are provided with a guide hole through which the vertical column passes, the upper end of the vertical column is connected with a locking member above the lifting plate through the guide hole, and a spring is installed on the vertical column, and the spring is arranged between the limiting plate and the pressing member.

7. The cutting mechanism of a film packaging machine according to claim 4, characterized in that: The workbench is provided below with an output component, and the output component comprises a first conveying belt for longitudinal conveying.

8. A film packaging machine characterized by: The cutting mechanism comprises the cutting mechanism according to any one of claims 1-7.

9. The film packaging machine of claim 8, wherein: The cutting mechanism further comprises a film conveying mechanism and a material conveying mechanism, The film conveying mechanism comprises a feeding rack, an upper guide rod set, a lower guide rod set and a waste material winding shaft, the upper film enters the sealing station through the upper guide rod set, and the lower film enters the sealing station through the lower guide rod set. The material conveying mechanism further comprises a second conveying belt, the discharging station of the second conveying belt is connected with the workbench, and the first positioning member horizontally pushes the product in the discharging station of the second conveying belt into the sealing station of the workbench.

10. The film packaging machine of claim 9, wherein: The second conveying belt is transversely conveyed. The feeding rack is provided with a slitting cutter. The upper film and the lower film are longitudinally conveyed into the sealing station, and the conveying direction of the upper film and the lower film into the sealing station is consistent with the pushing direction of the first positioning member. The cutting mechanism comprises a workbench, a positioning component and a sealing and cutting component, The positioning component comprises a first positioning member and a second positioning member, which are arranged opposite to each other in front of and behind the sealing station and horizontally move on the workbench relative to the sealing station. The sealing and cutting component comprises a heat sealing ring and a heat sealing pad matched with the heat sealing ring, the heat sealing ring has a downward circular heat sealing mouth, and the heat sealing ring is vertically lifted relative to the heat sealing pad. The first positioning member and the second positioning member are both provided with a positioning groove for the product to enter. The first positioning member comprises a moving plate, a first stopper and a second stopper installed on the moving plate, and the three form the positioning groove, and the opposite surfaces of the first stopper and the second stopper are inclined surfaces. The workbench has a circular through hole, and the heat sealing pad is annular and embedded in the through hole. The heat sealing pad is a rubber pad. The sealing and cutting component further comprises a vertically lifting pressing member, and the pressing member is vertically lifted relative to the heat sealing ring. During sealing and cutting, the bottom of the pressing member is higher than the heat sealing mouth of the heat sealing ring. The sealing and cutting component further comprises a lifting plate vertically lifted, and a limiting plate is installed below the lifting plate, a vertical column is installed on the heat sealing ring, the limiting plate and the lifting plate are provided with a guide hole through which the vertical column passes, the upper end of the vertical column is connected with a locking member above the lifting plate through the guide hole, and a spring is installed on the vertical column, and the spring is arranged between the limiting plate and the pressing member. The workbench is provided below with an output component, and the output component comprises a first conveying belt for longitudinal conveying. The cutting mechanism comprises the cutting mechanism according to any one of claims 1-7. The cutting mechanism further comprises a film conveying mechanism and a material conveying mechanism, The film conveying mechanism comprises a feeding rack, an upper guide rod set, a lower guide rod set and a waste material winding shaft, the upper film enters the sealing station through the upper guide rod set, and the lower film enters the sealing station through the lower guide rod set. The material conveying mechanism further comprises a second conveying belt, the discharging station of the second conveying belt is connected with the workbench, and the first positioning member horizontally pushes the product in the discharging station of the second conveying belt into the sealing station of the workbench. The second conveying belt is transversely conveyed. The feeding rack is provided with a slitting cutter. The upper film and the lower film are longitudinally conveyed into the sealing station, and the conveying direction of the upper film and the lower film into the sealing station is consistent with the pushing direction of the first positioning member.

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