Film covering thermal cutting-off equipment of packaging machine

Abstract

The utility model discloses a film thermal cutting device of a packaging machine, which relates to the technical field of packaging, aims to solve the technical problems of easy adhesion and untight sealing during current film thermal cutting, and comprises a conveying mechanism, and a feeding mechanism, a side sealing mechanism and a thermal cutting mechanism which are arranged on the conveying mechanism, the conveying mechanism comprises a film covering conveying table, a feeding conveying table and a tail conveying table, the feeding conveying table and the tail conveying table are connected with the two ends of the film covering conveying table, the hot cutting mechanism comprises a mounting frame arranged on the outer side of the joint of the film covering conveying table and the tail conveying table, and air cylinders are symmetrically arranged on the mounting frame. An upper hot cutter and a lower hot cutter are arranged at the tail ends of piston rods of the two air cylinders correspondingly. The utility model has the advantages that by increasing the contact area of the cutter and the laminating film, the heating is uniform, the cutting force is dispersed, the problems of adhesion and notch are avoided, the hot sealing strip is firstly pre-sealed and then cut off, the displacement is prevented, the double heat sealing is realized, the problems of easy adhesion and untight sealing are solved, the service life of the cutter is prolonged, and the packaging quality and the production efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the packaging technical field more specifically, relate to a kind of film-coated hot cutting equipment of packaging machine. BACKGROUND

[0002] In modern packaging industry, film-coating process as the key link of improving the appearance quality of packaging product, protecting the surface of packaging and prolonging the shelf life of product, has been widely used in food, daily chemical, electronic, pharmaceutical and other fields. With the continuous improvement of market demand for packaging efficiency and packaging quality, the film-coated hot cutting process as an important finishing link in packaging production process, its equipment performance directly affects the operation efficiency of the whole packaging production line.

[0003] The film-coated hot cutting equipment of packaging machine cuts and heat seals the film by hot cutter during use. Due to the linear structure of the hot cutter, the pressure borne by the two ends and the middle part of the cutter body is inconsistent during pressure application, which causes the film to be easily stuck during cutting. In addition, heat sealing is only performed at the cutting surface, which may cause the sealing to be not tight, affecting the appearance of the package and reducing the sealing performance of the package. Therefore, the film-coated hot cutting equipment of packaging machine is proposed. SUMMARY

[0004] The utility model aims at overcoming the shortcomings of prior art, adapting to the actual need, providing a kind of film-coated hot cutting equipment of packaging machine to solve the technical problem of current film-coated hot cutting easy to stick and seal not tight.

[0005] To solve the above technical problems, the utility model provides the following technical scheme: a kind of film-coated hot cutting equipment of packaging machine, including conveying mechanism and the feeding mechanism, side sealing mechanism and hot cutting mechanism that are provided on conveying mechanism, the conveying mechanism includes film-coated conveying table and the tail conveying table that are connected to the film-coated conveying table two ends, the side sealing mechanism includes the second mounting plate that is symmetrically installed on film-coated conveying table, the front surface of the second mounting plate is equidistantly rotatably installed with the upper hot pressure conveying wheel and the lower hot pressure conveying wheel that are symmetrically distributed, the hot cutting mechanism includes the installation frame that is set at the outer side of the connecting place of film-coated conveying table and tail conveying table, the installation frame is symmetrically provided with cylinder, and the piston rod end of two cylinders is respectively provided with upper hot cutter and lower hot cutter.

[0006] Preferably, the film-coated conveying table, the feeding conveying table and the tail conveying table are all provided with mounting grooves, the first conveying belt, the third conveying belt and the second conveying belt are respectively arranged in the mounting grooves, and the back surface of the film-coated conveying table, the feeding conveying table and the tail conveying table is provided with a motor for driving the driving wheel of the conveying belt.

[0007] Preferably, the feeding mechanism comprises first mounting plates symmetrically arranged at the side ends of the connection between the film conveying table and the feeding conveying table, and a lower film cylinder and an upper film cylinder are symmetrically and rotatably arranged between the first mounting plates, and the film on the lower film cylinder extends from the gap of the connection between the film conveying table and the feeding conveying table to the film conveying table.

[0008] Preferably, the back surface of the second mounting plate is provided with pulleys connected with the shafts of the upper hot pressing conveying wheel and the lower hot pressing conveying wheel, and a transmission belt is connected between adjacent pulleys, and the back surface of the second mounting plate is further provided with a motor for driving the pulleys.

[0009] Preferably, the cutting surface of the upper hot cutter is arranged in a concave arc shape, and the cutting surface of the lower hot cutter is arranged in a convex arc shape.

[0010] Preferably, the side ends of the upper hot cutter and the lower hot cutter are symmetrically provided with heat sealing strips, the heat sealing strip comprises an elastic part and a heat sealing part, the elastic part is arranged in a plurality of curved arc shapes, the elastic part is made of an elastic material, the heat sealing part is arranged at the end of the elastic part, the heat sealing part is provided with a heating element, and the heat sealing part protrudes from the upper hot cutter and the lower hot cutter.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] 1. The upper hot cutter is arranged in a concave arc shape, and the lower hot cutter is arranged in a convex arc shape, so that the contact area of the cutter and the film is significantly increased compared with a traditional straight-line cutter, the arc structure makes the heating uniformly act on the film surface during cutting, avoids the "cutting failure" caused by insufficient local heating, disperses the cutting force, prevents stress concentration in a certain area, reduces adverse phenomena such as cut edge burrs and tearing, ensures the cut edge to be neat, improves the appearance quality of the package, and solves the problem of easy adhesion and loose sealing during current film hot cutting.

[0013] 2. The heat sealing strip structure is designed, the heat sealing strips are symmetrically arranged at the side ends of the hot cutter, the heat sealing part of the heat sealing strip protrudes from the cutter body, the heat sealing part is first contacted with the film before cutting, the built-in heating element and the cylinder pressure realize "pre-sealing", the film area to be cut is pressed and sealed, then the hot cutter completes the cutting action, the elastic part deforms in this process, the upper and lower cutters can cut the film, the film position is fixed in advance in the pre-sealing process, adhesion caused by film displacement during cutting is avoided, the film edge after cutting is ensured to be not loose, the adhesion risk is further reduced, the cutting position is double sealed, the sealing property is ensured, and the problem of easy adhesion and loose sealing during current film hot cutting is further solved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1It is the front view structural schematic diagram of the utility model;

[0015] Figure 2 It is the section view structural schematic diagram of the utility model;

[0016] Figure 3 It is the cutting mechanism structural schematic diagram of the utility model;

[0017] Figure 4 It is the up and down hot cutter structure schematic diagram of the utility model;

[0018] Figure 5 It is the up hot cutter structure schematic diagram of the utility model;

[0019] Figure 6 It is the use state schematic diagram of the utility model.

[0020] Mark explanation in drawing: 100, conveying mechanism;101, film covering conveying table;1011, first conveying belt;102, tail conveying table;1021, second conveying belt;103, feeding conveying table;1031, third conveying belt;200, feeding mechanism;201, first mounting plate;202, lower film cylinder;203, upper film cylinder;300, side sealing mechanism;301, second mounting plate;302, upper hot pressing conveying wheel;303, lower hot pressing conveying wheel;400, hot cutting mechanism;401, mounting frame;402, air cylinder;403, upper hot cutter;404, lower hot cutter;405, hot sealing strip;4051, elastic part;4052, hot sealing part. Specific implementation

[0021] As Figures 1 to 6 shown, the utility model relates to a kind of film covering hot cutting equipment of packaging machine, including conveying mechanism 100 and the feeding mechanism 200, side sealing mechanism 300 and hot cutting mechanism 400 arranged on conveying mechanism 100, conveying mechanism 100 includes film covering conveying table 101 and the feeding conveying table 103 and tail conveying table 102 connected at the both ends of film covering conveying table 101, side sealing mechanism 300 includes the second mounting plate 301 symmetrically installed on film covering conveying table 101, the front surface of second mounting plate 301 is equidistantly rotatably installed with the upper hot pressing conveying wheel 302 and the lower hot pressing conveying wheel 303 distributed symmetrically, hot cutting mechanism 400 includes the mounting frame 401 arranged at the outside of the connecting place of film covering conveying table 101 and tail conveying table 102, air cylinder 402 is symmetrically arranged on mounting frame 401, the piston rod end of two air cylinders 402 is respectively provided with upper hot cutter 403 and lower hot cutter 404.The utility model increases the contact area of cutter and film, and the cutting force is dispersed by heating evenly, to avoid sticking and cutting problem, hot sealing strip 405 is preheated and sealed before cutting, to prevent displacement and double heat sealing, solve easy sticking, sealing problem, also prolong the life of cutter, improve packaging quality and production efficiency.

[0022] Specifically, the film conveying table 101, the feeding conveying table 103 and the tail conveying table 102 are provided with mounting grooves, the first conveying belt 1011, the third conveying belt 1031 and the second conveying belt 1021 are respectively arranged in the mounting grooves, and the back surfaces of the film conveying table 101, the feeding conveying table 103 and the tail conveying table 102 are provided with motors for driving the driving wheels of the conveying belts. The packaging box is arranged on the third conveying belt 1031 for conveying during the film covering, the film covering work can be performed when the packaging box is conveyed to the first conveying belt 1011, and the hot cutting work can be performed when the packaging box is conveyed to the second conveying belt 1021 after the film covering.

[0023] Further, the feeding mechanism 200 includes first mounting plates 201 symmetrically arranged at the side ends of the connection part between the film conveying table 101 and the feeding conveying table 103, and the lower film cylinder 202 and the upper film cylinder 203 are symmetrically and rotatably arranged between the first mounting plates 201. The film on the lower film cylinder 202 extends to the film conveying table 101 from the gap of the connection part between the film conveying table 101 and the feeding conveying table 103. The lower film cylinder 202 and the upper film cylinder 203 are arranged to provide the film required for the film covering.

[0024] It is worth noting that the back surface of the second mounting plate 301 is provided with pulleys connected with the shaft centers of the upper hot pressing conveying wheel 302 and the lower hot pressing conveying wheel 303, the adjacent pulleys are connected with transmission belts, and the back surface of the second mounting plate 301 is further provided with a motor for driving the pulleys. During the film covering, the motor works to drive the upper hot pressing conveying wheel 302 and the lower hot pressing conveying wheel 303 to rotate, the upper hot pressing conveying wheel 302 and the lower hot pressing conveying wheel 303 can convey and heat seal the upper and lower films, and the upper and lower films can be connected together, so that the upper and lower films form a bag structure with front and rear openings, and the packaging box is located between the upper and lower films for film covering work.

[0025] It is worth noting that the cutting surface of the upper hot cutter 403 is arranged in a concave arc shape, and the cutting surface of the lower hot cutter 404 is arranged in a convex arc shape. The concave and convex arc shapes of the cutting surfaces of the upper hot cutter 403 and the lower hot cutter 404 can increase the contact area between the cutter and the film during cutting, compared with a straight line cutter, the cutting process can be more uniform and stable, the probability of defects such as burrs and tears at the cutting part can be reduced, and the film can be uniformly heated to make the whole film easy to cut, so that a more neat cut can be obtained, the appearance and quality of the packaging can be ensured, and the situation that the film cannot be cut due to uneven stress or uneven heating can be avoided. Secondly, the curved cutter disperses the cutting force, avoids stress concentration in a certain point or a small area, reduces the local wear and damage of the cutter, prolongs the service life of the cutter, and prolongs the service life of the cutter.

[0026] It is worth noting that the side ends of the upper hot cutter 403 and the lower hot cutter 404 are symmetrically provided with heat sealing strips 405, the heat sealing strip 405 comprises an elastic part 4051 and a heat sealing part 4052, the elastic part 4051 is provided in several curved arcs, the elastic part 4051 is made of elastic material, the heat sealing part 4052 is provided at the end of the elastic part 4051, the heat sealing part 4052 is provided with a heating element, and the heat sealing part 4052 protrudes from the upper hot cutter 403 and the lower hot cutter 404. When the packaging box is conveyed to the second conveying belt 1021, the packaging box is located in the upper and lower films, and the side ends of the upper and lower films are heat sealed by the heat pressing conveying wheel. At this time, the hot cutting work can be carried out. The upper hot cutter 403 and the lower hot cutter 404 are made close to each other by the cylinder 402 to heat cut the film. First, the heat sealing strip 405 protrudes from the cutter, so that the heat sealing strip 405 can first contact the film. The heat sealing strip 405 can extrude and press the film and heat seal it. With the mutual contact of the upper hot cutter 403 and the lower hot cutter 404 for cutting, the elastic part 4051 will be bent and deformed. Because the film has been pressed and heat sealed, the upper hot cutter 403 and the lower hot cutter 404 can further ensure the neatness of the film cutting.

[0027] Working principle: the embodiment provides a film covering and hot cutting equipment of a packaging machine, when in use, firstly, the corresponding driving motors of each mechanism are started, the motor at the back of the feeding conveying table 103 drives the third conveying belt 1031 to operate, the operator places the packaging box to be covered with film on the third conveying belt 1031, the packaging box is conveyed to the film conveying table 101 direction along with the third conveying belt 1031, at the same time, in the feeding mechanism 200, the lower film cylinder 202 and the upper film cylinder 203 rotatably installed between the first mounting plates 201 release the lower film and the upper film respectively, wherein the lower film extends from the gap between the film conveying table 101 and the feeding conveying table 103 to the first conveying belt 1011 of the film conveying table 101, and the upper film corresponds to cover above the packaging box to be conveyed to the film conveying table 101, when the packaging box enters the first conveying belt 1011 from the third conveying belt 1031, the packaging box is in the initial state of film covering between the lower film and the upper film, then the motor at the back of the film conveying table 101 drives the first conveying belt 1011 to operate, drives the packaging box and the upper and lower films to move to the side sealing mechanism 300, at this time, the motor at the back of the second mounting plate 301 of the side sealing mechanism 300 works, drives the upper hot pressing conveying wheel 302 and the lower hot pressing conveying wheel 303 to rotate synchronously through the cooperation of the belt pulley and the transmission belt, the upper and lower hot pressing conveying wheels heat seal the two side edges of the passing upper and lower films in the rotating process, so that the upper and lower films form a bag-shaped structure with only the front and rear ends open, and the packaging box is wrapped in the bag-shaped film and continues to be conveyed along with the first conveying belt 1011, then the packaging box with completed side sealing is conveyed to the connecting place between the film conveying table 101 and the tail conveying table 102 together with the bag-shaped film, and then enters the second conveying belt 1021 of the tail conveying table 102, at this time, the two cylinders 402 symmetrically arranged on the mounting frame 401 of the hot cutting mechanism 400 are started at the same time, the piston rod of the cylinder 402 extends, drives the upper hot cutter 403 to move downward and the lower hot cutter 404 to move upward respectively, because the heat sealing part 4052 of the heat sealing strip 405 at the side end of the upper hot cutter 403 and the lower hot cutter 404 protrudes from the cutter body, the heat sealing part 4052 contacts the bag-shaped film first, the heating element in the heat sealing part 4052 generates heat, and at the same time, the pressure of the cylinder 402 presses and heat seals the film, with the continuous extension of the piston rod of the cylinder 402, the upper hot cutter 403 and the lower hot cutter 404 gradually approach, the elastic part 4051 of the heat sealing strip 405 is bent and deformed due to the extrusion, until the upper hot cutter 403 (the cutting surface is a concave arc) and the lower hot cutter 404 (the cutting surface is a convex arc) completely fit, heat cut and cut off the film which has completed the preheat sealing, during the cutting process, the arc-shaped cutting surface increases the contact area between the cutter and the film, so that the heating is more uniform and the cutting is more complete, the sticking situation is avoided, and the double heat sealing effect of the heat sealing strip 405 ensures the sealing tightness, after the cutting is completed, the piston rod of the cylinder 402 is retracted, drives the upper hot cutter 403 and the lower hot cutter 404 to reset,The packaging box after the film hot cutting is conveyed to the next process (a heat shrinkage process) by the second conveying belt 1021, and the next batch of packaging boxes after the side sealing and the film continue to be conveyed to the heat cutting area, the above heat cutting action is repeated, and continuous film hot cutting is realized.

[0028] The embodiments of the present application disclose the preferred embodiments, but are not limited to this. The ordinary skilled in the art can easily understand the spirit of the present application according to the above embodiments, and make different inferences and changes, as long as they do not deviate from the spirit of the present application, and are within the protection scope of the present application.

Claims

1. A film laminating and hot cutting apparatus of a packaging machine, characterized by, The utility model provides a film cutting device, which comprises a conveying mechanism (100) and a feeding mechanism (200), a side sealing mechanism (300) and a hot cutting mechanism (400) arranged on the conveying mechanism (100), the conveying mechanism (100) comprises a film conveying table (101), an inlet conveying table (103) and a tail conveying table (102) connected to both ends of the film conveying table (101), the side sealing mechanism (300) comprises a second mounting plate (301) symmetrically arranged on the film conveying table (101), the front surface of the second mounting plate (301) is provided with symmetrically arranged upper hot pressing conveying wheels (302) and lower hot pressing conveying wheels (303) which are rotatably arranged at equal intervals, and the hot cutting mechanism (400) comprises a mounting frame (401) arranged outside the joint between the film conveying table (101) and the tail conveying table (102), the mounting frame (401) is symmetrically provided with air cylinders (402), and the piston rods of the two air cylinders (402) are respectively provided with upper hot cutting knives (403) and lower hot cutting knives (404).

2. The film laminating and hot cutting apparatus of a packaging machine according to claim 1, wherein The film conveying table (101), the inlet conveying table (103) and the tail conveying table (102) are all provided with mounting grooves, the mounting grooves are respectively provided with first conveying belts (1011), third conveying belts (1031) and second conveying belts (1021), and the back surfaces of the film conveying table (101), the inlet conveying table (103) and the tail conveying table (102) are all provided with motors for driving the driving wheels of the conveying belts.

3. The film laminating and hot cutting apparatus of a packaging machine according to claim 2, wherein The feeding mechanism (200) comprises a first mounting plate (201) symmetrically arranged at the side end of the joint between the film conveying table (101) and the inlet conveying table (103), the first mounting plate (201) is symmetrically rotatably provided with a lower film cylinder (202) and an upper film cylinder (203), and the film on the lower film cylinder (202) extends from the gap of the joint between the film conveying table (101) and the inlet conveying table (103) to the film conveying table (101).

4. The film laminating and hot cutting apparatus of a packaging machine according to claim 3, wherein The back surface of the second mounting plate (301) is provided with pulleys connected with the shaft centers of the upper hot pressing conveying wheels (302) and the lower hot pressing conveying wheels (303), adjacent pulleys are connected with transmission belts, and the back surface of the second mounting plate (301) is further provided with a motor for driving the pulleys.

5. The film laminating and hot cutting apparatus of a packaging machine according to claim 4, wherein The cutting surface of the upper hot cutting knife (403) is arranged in a concave arc shape, and the cutting surface of the lower hot cutting knife (404) is arranged in a convex arc shape.

6. The film laminating and hot cutting apparatus of a packaging machine according to claim 5, wherein The side ends of the upper hot cutting knife (403) and the lower hot cutting knife (404) are symmetrically provided with heat sealing strips (405), the heat sealing strips (405) comprise elastic parts (4051) and heat sealing parts (4052), the elastic parts (4051) are arranged in a plurality of curved arc shapes, the elastic parts (4051) are made of elastic materials, the heat sealing parts (4052) are arranged at the ends of the elastic parts (4051), the heat sealing parts (4052) are provided with heating elements, and the heat sealing parts (4052) protrude from the upper hot cutting knife (403) and the lower hot cutting knife (404).

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