Cutting device for packaging bag film laminating machine

Abstract

The invention relates to the technical field of cutting devices, in particular to a cutting device for a packaging bag film laminating machine. According to the film laminating device, the mounting base drives the stretching rod to rotate, then the stretching rod rotates in an inner cavity of the limiting groove, the stretching rod can apply stretching force to the film laminating part, then the stretching rod fixes and limits the film laminating part, and the film laminating part is flattened and fixed; a thermal shrinkage assembly is arranged below a cutting assembly, when a mounting frame moves downwards, a limiting spring presses a cutting blade downwards, only one set of blades can penetrate through a guide groove of a guide shell, the other blades are extruded to drive a sliding rod to move upwards and compress the limiting spring, and when the blades are replaced, a control panel controls an electric control air cylinder to push a connecting plate; the two sets of guide shells synchronously move along the limiting sliding grooves, the guide grooves are switched to the position under the other set of cutting blades, when the cutting blades move downwards, guiding is carried out, the previous cutting blades are subjected to resistance of the guide shells, and the blades can be replaced without shutdown.

Description

Technical Field

[0001] The present invention relates to the technical field of cutting devices, and particularly to a cutting device for a packaging bag laminating machine. Background Art

[0002] A packaging bag is a bag-shaped container used to hold various items, which plays a role in the production and circulation of items and can facilitate the transportation and storage of goods. At present, in actual use scenarios, an operator needs to hold scissors and manually cut the packaging bag according to the required length before carrying out the packaging work; However, when the existing cutting device cuts the packaging bag, since the packaging bag is not stretched during transmission, when cutting, the other end of the packaging bag is likely to shift when being pressed for cutting, resulting in the problem of cutting wrinkles; at the same time, during the high-speed cutting process of the device, due to the frequent friction and cutting between the cutting tool and the packaging material, wear is likely to occur. When replacing the blade in the existing cutting structure, shutdown maintenance is required, leading to the problem of low cutting efficiency; and when the existing cutting device cuts, after cutting is completed, heat shrinkage treatment of the packaging bag is still required to make the packaging bag fully fit the product for packaging, and the multiple steps will lead to the problem of low processing efficiency.

[0003] Therefore, a cutting device for a packaging bag laminating machine is needed to improve the above problems. Summary of the Invention

[0004] In order to solve the problem that when the cutting device for a packaging bag laminating machine cuts the packaging bag laminating, during the high-speed cutting process of the device, due to the frequent friction and cutting between the cutting tool and the packaging material, wear is likely to occur. When replacing the blade in the existing cutting structure, shutdown maintenance is required, leading to the problem of low cutting efficiency, the present invention provides a cutting device for a packaging bag laminating machine to solve the above problems.

[0005] To achieve the above object, the present invention provides the following technical solutions: A cutting device for a packaging bag laminating machine, including a mounting bracket, mounting plates are installed on the opposite side walls of the mounting bracket, a surrounding plate is installed on one side of the mounting plate and on the opposite side walls of the mounting bracket, a control panel is embedded and installed on the outer wall of the surrounding plate, a feeding component is installed on the outer wall of the mounting plate, a cutting component is installed on the outer wall of the mounting bracket on one side of the feeding component, and a heat shrinkage component is arranged on the inner wall of the cutting component; It further includes a transmission component, and two groups of the transmission components are respectively arranged on the opposite inner walls of the mounting bracket, and the transmission components are respectively located directly below the feeding component and the cutting component; The feeding component includes a servo motor and a pressing roller. The servo motor is installed on the outer wall of the mounting plate. One end of the driving shaft of the servo motor penetrates through the mounting plate and extends to the inner wall of the mounting plate, where a winding cylinder is installed. The winding cylinder is rotatably connected to the opposite inner walls of the mounting plate. An installation block is installed on the outer wall of the mounting plate, and a guide rail is installed on the inner wall of the installation block. One end of the guide rail is connected to the outer wall of the mounting plate, and a slider is slidably connected to the outer wall of the guide rail. The outer wall of the slider is rotatably connected to an installation base, and a stretching rod is rotatably connected to the inner wall of the installation base. There are two groups of stretching rods, which are respectively located on the inner wall of the installation base. One side of the guide rail and on the outer wall of the mounting plate, limiting grooves are symmetrically opened, and the stretching rod is slidably connected to the inner wall of the limiting groove. The pressing roller is rotatably connected to the outer wall of the enclosure, and one end of the pressing roller penetrates through the enclosure and extends to the outer wall of the enclosure to be connected to a stepping motor, where the stepping motor is installed on the outer wall of the enclosure.

[0006] As a preferred solution of the present invention, the cutting component includes a mounting top plate, which is arranged on the outer wall of the mounting bracket. The cross-section of the mounting top plate is a concave structure. Limiting slide rails are symmetrically arranged on the inner wall of the mounting top plate, and a mounting frame is slidably connected to the inner wall of the limiting slide rails. A pressing electric cylinder is installed on the top outer wall of the mounting top plate. One end of the pressing electric cylinder penetrates through the mounting top plate and extends into the inner cavity of the mounting top plate. One end of the pressing electric cylinder is located directly above the mounting frame, and there is a gap between the pressing electric cylinder and the mounting frame.

[0007] As a preferred solution of the present invention, a transverse slide rail is installed on the inner wall of the mounting frame, and a sliding housing is slidably connected to the opposite inner walls of the transverse slide rail. There are two groups of sliding housings, which are respectively located on the inner wall of the transverse slide rail. A fixed sleeve is embedded in the inner wall of the sliding housing. There are multiple groups of fixed sleeves, which are respectively located on the inner wall of the sliding housing, and a sliding rod is slidably connected to the inner wall of the fixed sleeve.

[0008] As a preferred solution of the present invention, a cutting blade is installed at one end of the sliding rod, and a limiting spring is installed on one side of the sliding rod and on the outer wall of the cutting blade. One end of the limiting spring is connected to the outer wall of the fixed sleeve. There are multiple groups of sliding rods, which are respectively located on the outer wall of the cutting blade.

[0009] As a preferred solution of the present invention, the heat shrinkage component includes limiting chutes and electric control cylinders. There are two groups of limiting chutes, which are respectively located on the opposite inner walls of the mounting top plate. Guide shells are symmetrically installed on the inner walls of the limiting chutes, and the material of the guide shells is a heat-conducting material.

[0010] As a preferred solution of the present invention, a guide groove is provided on the bottom outer wall of the guide shell, a heating plate is installed on one side of the guide groove and on the side wall of the guide shell, and the electric control cylinder is provided in multiple groups and respectively located on the outer wall of the installation top plate.

[0011] As a preferred solution of the present invention, a connecting plate is installed at one end of the electric control cylinder, one end of the connecting plate is connected to the outer wall of the guide shell, and a hot air gun is arranged on one side of the transverse slide rail and on the inner wall of the mounting frame from left to right.

[0012] As a preferred solution of the present invention, the transmission component includes a rotating shaft, which is rotatably connected to the inner walls opposite to the mounting bracket, a transmission roller is installed on the outer wall of the rotating shaft, one end of the rotating shaft passes through the mounting bracket and extends to the outer wall of the mounting bracket where a driving wheel is installed, a driving motor is installed on the inner wall of the mounting bracket, a driving shaft of the driving motor is provided with a pulley, the pulley is connected to the driving wheel via a transmission belt, and a conveyor belt is provided on the outer wall of the transmission roller.

[0013] As a preferred solution of the present invention, a coating member is provided on the outer wall of the winding drum, a foot pad is provided at the bottom corner of the mounting bracket, and the control panel is respectively connected to the servo motor, stepper motor, downward pressure electric control cylinder, electric control cylinder, heating plate and hot air gun through wires, and the connection method is electrical connection.

[0014] Compared with the prior art, the present invention can stretch the coated piece by arranging a feeding assembly in the cutting device of the packaging bag laminating machine to facilitate subsequent cutting. The mounting base is rotated on the outer wall of the slider, which will cause the mounting base to drive the stretching rod to rotate, and then the stretching rod rotates in the inner cavity of the limiting groove, which will cause the stretching rod to apply a stretching force to the coated piece, and then the stretching rod fixes and limits the coated piece, so that the coated piece is flattened and fixed, and at the same time, the mounting base drives the slider to move longitudinally on the outer wall of the guide rail, so that the stretching rod applies a longitudinal pulling force to the coated piece, and then the packaging bag is stretched during transportation, and the pressing roller presses down on the coating piece to ensure that the subsequent cutting surface is smoother, thereby solving the problem that when the existing cutting device cuts the packaging bag, the packaging bag is not stretched during transportation, and when cutting, the other end of the packaging bag is easily offset during the downward pressure cutting, which will cause cutting wrinkles.

[0015] In the present invention, by arranging a cutting component and a heat shrinkage component in a cutting device for a packaging bag laminating machine to cooperate with each other, through the selection of the cutting blade by the guiding housing, the cutting blade can be selected without stopping the machine. When cutting, the control panel controls the downward pressure of the electric cylinder to push the mounting frame to move downward along the limit sliding rail. A heat shrinkage component is arranged below the cutting component. When the mounting frame moves downward, the limit spring presses down the cutting blade. Only one set of blades can pass through the guiding groove of the guiding housing, and the other blades are driven to move upward by the extrusion and compress the limit spring. When replacing the blade, the control panel controls the electric cylinder to push the connecting plate, so that the two sets of guiding housings move synchronously along the limit sliding groove, and the guiding groove is switched to directly below the other set of cutting blades. When the cutting blade moves downward, it is guided, while the previous cutting blade is blocked by the guiding housing, and different cutting blades can be selected without stopping the machine, realizing the replacement of the blade without stopping the machine, thereby solving the problems that the tool and the packaging material are frequently rubbed and cut, which is easy to cause wear, and the existing cutting structure needs to stop for maintenance when replacing the blade, resulting in low cutting efficiency.

[0016] In the present invention, by arranging a heat shrinkage component in a cutting device for a packaging bag laminating machine, the heating plate heats up the guiding housing of the heat conducting material, so that the guiding housing heats the cutting blade. At the same time, after the cutting blades at the two sets of guiding housings complete the cutting of the laminating part, a closed space is formed between the two sets of cutting blades. The control panel controls the hot air gun to operate, so that the hot air gun blows out hot air to heat-melt the laminating part, so that the laminating part shrinks on the surface of the product, thereby solving the problem that after cutting is completed, the packaging bag still needs to be heat-shrunk, so that the packaging bag completely fits the product for packaging, and the multiple steps will lead to low processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic side view structure diagram of the present invention; Figure 3 is a schematic structure diagram of the feeding component of the present invention; Figure 4 is a schematic structure diagram of the transmission component of the present invention; Figure 5 is a schematic structure diagram of the cutting component of the present invention; Figure 6 is a schematic structure diagram of the sliding housing of the present invention; Figure 7 For the present invention Figure 5 is an enlarged schematic diagram of Structure A; Figure 8 For the present invention Figure 5 is an enlarged schematic diagram of Structure B.

[0018] In the figure: 1. Installation bracket; 2. Installation plate; 3. Enclosure panel; 4. Control panel; 5. Feeding component; 501. Servo motor; 502. Lower pressing roller; 503. Winding cylinder; 504. Installation block; 505. Guide rail; 506. Slide block; 507. Installation base; 508. Tensile rod; 509. Limit groove; 510. Stepper motor; 6. Cutting component; 601. Installation top plate; 602. Limit slide rail; 603. Installation frame; 604. Lower pressing electric cylinder; 605. Horizontal slide rail; 606. Sliding housing; 607. Fixed sleeve; 608. Sliding rod; 609. Cutting blade; 610. Limit spring; 7. Heat shrinkage component; 701. Limit chute; 702. Electric cylinder; 703. Guide housing; 704. Guide groove; 705. Heating plate; 706. Connecting plate; 707. Hot air gun; 8. Transmission component; 801. Rotating shaft; 802. Driving roller; 803. Driving wheel; 804. Driving motor; 805. Pulley; 806. Conveyor belt; 9. Film laminating part; 10. Foot pad. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Embodiment: Please refer to Figures 1-8 A cutting device for a packaging bag film laminating machine as shown, including an installation bracket 1, installation plates 2 are installed on the opposite side walls of the installation bracket 1, an enclosure panel 3 is installed on one side of the installation plate 2 and on the opposite side walls of the installation bracket 1, a control panel 4 is embedded and installed on the outer wall of the enclosure panel 3, a feeding component 5 is installed on the outer wall of the installation plate 2, a cutting component 6 is installed on the outer wall of the feeding component 5 and on the outer wall of the installation bracket 1, and a heat shrinkage component 7 is arranged on the inner wall of the cutting component 6; It further includes a transmission component 8. There are two groups of transmission components 8 and they are respectively located on the opposite inner walls of the installation bracket 1, and the transmission components 8 are respectively located directly below the feeding component 5 and the cutting component 6; In this embodiment, specifically refer to Figure 1 , Figure 2 , Figure 3 and Figure 4, the feeding component 5 includes a servo motor 501 and a pressing roller 502. The servo motor 501 is installed on the outer wall of the mounting plate 2. One end of the drive shaft of the servo motor 501 penetrates through the mounting plate 2 and extends to the inner wall of the mounting plate 2 where a winding cylinder 503 is installed. The winding cylinder 503 is rotatably connected to the opposite inner walls of the mounting plate 2. An installation block 504 is installed on the outer wall of the mounting plate 2, and a guide rail 505 is installed on the inner wall of the installation block 504. One end of the guide rail 505 is connected to the outer wall of the mounting plate 2, and a slider 506 is slidably connected to the outer wall of the guide rail 505. An installation base 507 is rotatably connected to the outer wall of the slider 506, and a stretching rod 508 is rotatably connected to the inner wall of the installation base 507. There are two groups of stretching rods 508 which are respectively located on the inner wall of the installation base 507. One side of the guide rail 505 and on the outer wall of the mounting plate 2, limiting grooves 509 are symmetrically opened, and the stretching rod 508 is slidably connected to the inner wall of the limiting groove 509. The pressing roller 502 is rotatably connected to the outer wall of the enclosing plate 3. One end of the pressing roller 502 penetrates through the enclosing plate 3 and extends to the outer wall of the enclosing plate 3 where a stepping motor 510 is connected. The stepping motor 510 is installed on the outer wall of the enclosing plate 3.

[0021] In this embodiment, specifically refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7, the cutting assembly 6 includes a mounting top plate 601 which is arranged on the outer wall of the mounting bracket 1. The cross-section of the mounting top plate 601 is a concave structure. Limiting sliding rails 602 are symmetrically arranged on the inner wall of the mounting top plate 601. An installation frame 603 is slidably connected to the inner wall of the limiting sliding rails 602. A downward pressing electric cylinder 604 is installed on the top outer wall of the mounting top plate 601. One end of the downward pressing electric cylinder 604 penetrates through the mounting top plate 601 and extends into the inner cavity of the mounting top plate 601. One end of the downward pressing electric cylinder 604 is located directly above the installation frame 603, and there is a gap between the downward pressing electric cylinder 604 and the installation frame 603. A transverse sliding rail 605 is installed on the inner wall of the installation frame 603. A sliding housing 606 is slidably connected to the opposite inner walls of the transverse sliding rail 605. There are two groups of sliding housings 606 which are respectively located on the inner wall of the transverse sliding rail 605. A fixed sleeve 607 is embedded and installed on the inner wall of the sliding housing 606. There are multiple groups of fixed sleeves 607 which are respectively located on the inner wall of the sliding housing 606. A sliding rod 608 is slidably connected to the inner wall of the fixed sleeve 607. A cutting blade 609 is installed at one end of the sliding rod 608. A limiting spring 610 is installed on one side of the sliding rod 608 and on the outer wall of the cutting blade 609. One end of the limiting spring 610 is connected to the outer wall of the fixed sleeve 607. There are multiple groups of sliding rods 608 which are respectively located on the outer wall of the cutting blade 609.

[0022] Under the action of the above structural features and connection relationships, when the two guiding shells 703 displace simultaneously on the inner wall of the limiting sliding groove 701, when the guiding shell 703 moves, it will cause the guiding groove 704 of the guiding shell 703 to move directly below another group of cutting blades 609. When the cutting blade 609 moves downward for guiding, when the guiding shell 703 is subjected to extrusion by the cutting blade 609, it will cause the cutting blade 609 to exert a thrust through the sliding rod 608, and then the sliding rod 608 drives the sliding housing 606 to slide horizontally on the inner wall of the transverse sliding rail 605, so that the stability of the device is better; In this embodiment, specifically refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 8, the heat shrinkage assembly 7 includes a limit chute 701 and an electric control cylinder 702. There are two sets of limit chutes 701, which are respectively located on the opposite inner walls of the installation top plate 601. Guide shells 703 are symmetrically installed on the inner walls of the limit chutes 701. The guide shells 703 are made of heat-conducting materials. A guide groove 704 is opened on the outer wall at the bottom of the guide shell 703. A heating plate 705 is installed on one side of the guide groove 704 and on the side wall of the guide shell 703. There are multiple sets of electric control cylinders 702, which are respectively located on the outer wall of the installation top plate 601. One end of the electric control cylinder 702 is installed with a connecting plate 706. One end of the connecting plate 706 is connected to the outer wall of the guide shell 703. On one side of the transverse slide rail 605 and inside the installation frame 603, a hot air gun 707 is arranged in sequence from left to right.

[0023] In this embodiment, specifically refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 , the transmission assembly 8 includes a rotating shaft 801. The rotating shaft 801 is rotatably connected to the opposite inner walls of the installation bracket 1. A transmission roller 802 is installed on the outer wall of the rotating shaft 801. One end of the rotating shaft 801 penetrates through the installation bracket 1 and extends to the outer wall of the installation bracket 1 to install a driving wheel 803. A driving motor 804 is installed on the inner wall of the installation bracket 1. A pulley 805 is arranged on the driving shaft of the driving motor 804. The pulley 805 is connected to the driving wheel 803 through a transmission belt. A conveyor belt 806 is arranged on the outer wall of the transmission roller 802.

[0024] Based on the above structural features and connection relationships, a film covering member 9 is arranged on the outer wall of the winding cylinder 503. One end of the film covering member 9 is annularly wound on the inner wall of the stretching rod 508, and one end of the film covering member 9 is connected to the bottom outer wall of the pressing roller 502. Foot pads 10 are arranged at the bottom corners of the installation bracket 1, making the device more stable when the cutting device in the installation bracket 1 operates; Among them, the control panel 4 is respectively connected to the servo motor 501, the stepping motor 510, the downward pressing electric control cylinder 604, the electric control cylinder 702, the heating plate 705 and the hot air gun 707 through wires and the connection method is electrical connection. Under this effect, the device is powered on, and then the control panel 4 controls the servo motor 501, the stepping motor 510, the downward pressing electric control cylinder 604, the electric control cylinder 702, the heating plate 705 and the hot air gun 707 to be powered on and operate.

[0025] When the cutting device for the packaging bag laminating machine in this solution is working, a laminating member 9 is provided on the outer wall of the winding cylinder 503. One end of the laminating member 9 is annularly wound on the inner wall of the stretching rod 508. The connection mode between the laminating member 9 and the stretching rod 508 is a sliding connection. One end of the laminating member 9 is connected to the bottom outer wall of the lower pressing roller 502. At the same time, the control panel 4 is respectively connected to the servo motor 501, the stepping motor 510, the lower pressing electric cylinder 604, the electric cylinder 702, the heating plate 705 and the hot air gun 707 through wires and the connection mode is electrical connection. Under this action, the device is powered on, and then the control panel 4 controls the servo motor 501, the stepping motor 510, the lower pressing electric cylinder 604, the electric cylinder 702, the heating plate 705 and the hot air gun 707 to be powered on and operate; The rotating shaft 801 is rotatably connected to the opposite inner walls of the mounting bracket 1. A driving roller 802 is installed on the outer wall of the rotating shaft 801. One end of the rotating shaft 801 penetrates through the mounting bracket 1 and extends to the outer wall of the mounting bracket 1 to install a driving wheel 803. A driving motor 804 is installed on the inner wall of the mounting bracket 1. A pulley 805 is provided on the driving shaft of the driving motor 804. The pulley 805 is connected to the driving wheel 803 through a transmission belt. Under the action of the conveyor belt 806 provided on the outer wall of the driving roller 802, when the switch of the control panel 4 is turned on, the control panel 4 controls the driving motor 804 to operate. When the driving motor 804 operates, the driving shaft of the driving motor 804 drives the pulley 805 to operate, and the pulley 805 drives the driving wheel 803 to operate through the transmission belt, so that the driving wheel 803 drives the driving roller 802 to rotate through the rotating shaft 801, and then the driving roller 802 drives the conveyor belt 806 to operate. Subsequently, only the product to be packaged needs to be placed on the base surface of the conveyor belt 806 for conveying; The servo motor 501 is installed on the outer wall of the mounting plate 2. One end of the drive shaft of the servo motor 501 passes through the mounting plate 2 and extends to the inner wall of the mounting plate 2, on which a winding drum 503 is installed. The winding drum 503 is rotatably connected to the opposite inner wall of the mounting plate 2. At the same time, the control panel 4 controls the servo motor 501 to operate, so that the drive shaft of the servo motor 501 drives the winding drum 503 to rotate, so that the winding drum 503 transmits the coating member 9. At the same time, a mounting block 504 is installed on the outer wall of the mounting plate 2, and a guide rail 505 is installed on the inner wall of the mounting block 504, wherein one end of the guide rail 505 is connected to the outer wall of the mounting plate 2, and a slider 506 is slidably connected to the outer wall of the guide rail 505, and a mounting block 506 is rotatably connected to the outer wall of the slider 506. The base 507 is rotatably connected to the inner wall of the mounting base 507 with a stretching rod 508. The stretching rod 508 is provided with two groups and is respectively located on the inner wall of the mounting base 507. Under the action of the limiting groove 509 symmetrically provided on one side of the guide rail 505 and on the outer wall of the mounting plate 2, when the film-coated member 9 passes through the stretching rod 508, it is only necessary to move the mounting base 507 to make the mounting base 507 rotate on the outer wall of the slider 506. When the mounting base 507 rotates, the mounting base 5 07 drives the stretching rod 508 to rotate, and then the stretching rod 508 rotates in the inner cavity of the limiting groove 509. When the stretching rod 508 rotates, the stretching rod 508 applies a stretching force to the coating member 9, and then the stretching rod 508 fixes and limits the coating member 9, so that the coating member 9 is flattened and fixed, and at the same time, a longitudinal pulling force is applied to the mounting base 507, so that the mounting base 507 drives the slider 506 to move longitudinally on the outer wall of the guide rail 505, so that the stretching rod 508 can flatten and fix the coating member 9. A longitudinal pulling force is applied to stretch the packaging bag during transmission. When the conveyor belt 806 drives the product and the film-coated member 9 to be transmitted to the pressing roller 502, the pressing roller 502 presses down the film-coated member 9 to make the film-coated member 9 fit the surface of the product to ensure a smoother subsequent cutting surface. This solves the problem that when the existing cutting device cuts the packaging bag, the packaging bag is not stretched during transmission, which easily causes the other end of the packaging bag to deviate during the pressing and cutting, resulting in cutting wrinkles. One end of the downward pressure electric cylinder 604 penetrates through the installation top plate 601 and extends into the inner cavity of the installation top plate 601. One end of the downward pressure electric cylinder 604 is located directly above the mounting bracket 603, and there is a gap between the downward pressure electric cylinder 604 and the mounting bracket 603. A transverse slide rail 605 is installed on the inner wall of the mounting bracket 603. A sliding housing 606 is slidably connected to the opposing inner walls of the transverse slide rail 605. There are two sets of sliding housings 606, which are respectively located on the inner wall of the transverse slide rail 605. A fixed sleeve 607 is embedded and installed on the inner wall of the sliding housing 606. There are multiple sets of fixed sleeves 607, which are respectively located on the inner wall of the sliding housing 606. A sliding rod 608 is slidably connected to the inner wall of the fixed sleeve 607. One end of the sliding rod 608 is installed with a cutting blade 609. A limiting spring 610 is installed on one side of the sliding rod 608 and on the outer wall of the cutting blade 609. Under the action that one end of the limiting spring 610 is connected to the outer wall of the fixed sleeve 607, when cutting, the control panel 4 controls the downward pressure electric cylinder 604 to operate, so that one end of the downward pressure electric cylinder 604 pushes the mounting bracket 603 to move downward, so that the mounting bracket 603 moves downward on the inner wall of the limiting slide rail 602. Since the heat shrinkage assembly 7 is arranged directly below the cutting assembly 6, when the mounting bracket 603 passes by, the limiting spring 610 applies a downward thrust to the cutting blade 609, causing the cutting blade 609 to move downward; There are two sets of limit sliding grooves 701, which are respectively located on the opposite inner walls of the mounting top plate 601. Guide shells 703 are symmetrically installed on the inner walls of the limit sliding grooves 701. The guide shells 703 are made of heat-conducting materials. Under the action of the guide grooves 704 opened on the bottom outer walls of the guide shells 703, when the cutting blade 609 moves to the guide shell 703, only one set of cutting blades 609 can pass through the guide groove 704, and the other sets of cutting blades 609 are subjected to the extrusion force of the guide shell 703. As a result, the cutting blade 609 drives the sliding rod 608 to move upward, so that the cutting blade 609 applies an extrusion force to the limit spring 610. When the blade is worn and needs to be replaced, a connecting plate 706 is installed at one end of the electric control cylinder 702. Under the action of the connecting plate 706, one end of which is connected to the outer wall of the guide shell 703, only the control panel 4 needs to be used to control the operation of the electric control cylinder 702, so that one end of the electric control cylinder 702 applies a thrust to the guide shell 703 through the connecting plate 706, and then the two guide shells 703 move simultaneously on the inner walls of the limit sliding grooves 701. When the guide shell 703 moves, the guide groove 704 of the guide shell 703 will move to the directly below of another set of cutting blades 609. When the cutting blade 609 moves downward, it is guided, while the previous cutting blade 609 is subjected to the resistance of the guide shell 703. Different cutting blades 609 can be selected without stopping the machine, thus solving the problems that the tool and the packaging material are frequently rubbed and cut, which is easy to cause wear, and the existing cutting structure needs to stop for maintenance when replacing the blade, resulting in low cutting efficiency; Under the action of the heating plate 705 installed on the side of the guide groove 704 and on the side wall of the guide shell 703, after the cutting blade 609 cuts the film covering part 9, the control panel 4 controls the heating plate 705 to operate and heat, so that the heating plate 705 heats up the guide shell 703 made of heat-conducting material, so that the guide shell 703 heats the cutting blade 609. At the same time, after the two sets of cutting blades 609 that move downward at the two guide shells 703 complete the cutting of the film covering part 9, a closed space is formed between the two cutting blades 609. At the same time, under the action of the hot air guns 707 arranged in sequence from left to right on the side of the transverse sliding rail 605 and on the inner wall of the mounting frame 603, the control panel 4 controls the hot air guns 707 to operate, so that the hot air guns 707 blow hot air to heat-shrink the film covering part 9, so that the film covering part 9 shrinks and fits on the surface of the product, thus solving the problem that after cutting is completed, the packaging bag still needs to be heat-shrunk, so that the packaging bag completely fits the product for packaging, and the multiple steps will lead to low processing efficiency.

[0026] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cutting device for a packaging bag laminating machine, comprising a mounting bracket (1), characterized in that: Mounting plates (2) are installed on the opposite side walls of the mounting bracket (1). On one side of the mounting plate (2) and on the opposite side walls of the mounting bracket (1), a surrounding plate (3) is installed. A control panel (4) is embedded on the outer wall of the surrounding plate (3). A feeding component (5) is installed on the outer wall of the mounting plate (2). On one side of the feeding component (5) and on the outer wall of the mounting bracket (1), a cutting component (6) is installed. A heat shrinkage component (7) is arranged on the inner wall of the cutting component (6). It further includes a transmission component (8). There are two sets of the transmission components (8) which are respectively located on the opposite inner walls of the mounting bracket (1). Among them, the transmission components (8) are respectively located directly below the feeding component (5) and the cutting component (6). The feeding component (5) includes a servo motor (501) and a pressing roller (502). The servo motor (501) is installed on the outer wall of the mounting plate (2). One end of the drive shaft of the servo motor (501) penetrates through the mounting plate (2) and extends to the inner wall of the mounting plate (2) to install a winding cylinder (503). The winding cylinder (503) is rotatably connected to the opposite inner walls of the mounting plate (2). An installation block (504) is installed on the outer wall of the mounting plate (2). A guide rail (505) is installed on the inner wall of the installation block (504). One end of the guide rail (505) is connected to the outer wall of the mounting plate (2). A slider (506) is slidably connected to the outer wall of the guide rail (505). The outer wall of the slider (506) is rotatably connected to an installation base (507). The inner wall of the installation base (507) is rotatably connected to a stretching rod (508). There are two sets of the stretching rods (508) which are respectively located on the inner wall of the installation base (507). On one side of the guide rail (505) and on the outer wall of the mounting plate (2), limiting grooves (509) are symmetrically opened. And the stretching rod (508) is slidably connected to the inner wall of the limiting groove (509). The pressing roller (502) is rotatably connected to the outer wall of the surrounding plate (3). One end of the pressing roller (502) penetrates through the surrounding plate (3) and extends to the outer wall of the surrounding plate (3) to be connected to a stepping motor (510). Among them, the stepping motor (510) is installed on the outer wall of the surrounding plate (3).

2. The cutting device for a packaging bag laminating machine according to claim 1, wherein: The cutting component (6) includes a mounting top plate (601). The mounting top plate (601) is arranged on the outer wall of the mounting bracket (1). Among them, the cross-section of the mounting top plate (601) is a concave structure. Limiting slide rails (602) are symmetrically arranged on the inner wall of the mounting top plate (601). An installation frame (603) is slidably connected to the inner wall of the limiting slide rail (602). A downward pressing electric cylinder (604) is installed on the top outer wall of the mounting top plate (601). One end of the downward pressing electric cylinder (604) penetrates through the mounting top plate (601) and extends into the inner cavity of the mounting top plate (601). Among them, one end of the downward pressing electric cylinder (604) is directly above the installation frame (603). And there is a gap between the downward pressing electric cylinder (604) and the installation frame (603).

3. The cutting device for a packaging bag laminating machine according to claim 2, characterized in that: A transverse slide rail (605) is installed on the inner wall of the mounting bracket (603). A sliding housing (606) is slidably connected to the opposite inner walls of the transverse slide rail (605). There are two groups of the sliding housing (606) which are respectively located on the inner wall of the transverse slide rail (605). A fixed sleeve (607) is embedded and installed on the inner wall of the sliding housing (606). There are multiple groups of the fixed sleeve (607) which are respectively located on the inner wall of the sliding housing (606). A sliding rod (608) is slidably connected to the inner wall of the fixed sleeve (607).

4. A cutting device for a packaging bag laminating machine according to claim 1, characterized in that: A cutting blade (609) is installed at one end of the sliding rod (608). A limiting spring (610) is installed on one side of the sliding rod (608) and on the outer wall of the cutting blade (609). One end of the limiting spring (610) is connected to the outer wall of the fixed sleeve (607). There are multiple groups of the sliding rod (608) which are respectively located on the outer wall of the cutting blade (609).

5. A cutting device for a packaging bag laminating machine according to claim 3, characterized in that: The heat shrinkage assembly (7) includes a limiting chute (701) and an electric control cylinder (702). There are two groups of the limiting chute (701) which are respectively located on the opposite inner walls of the mounting top plate (601). Guide shells (703) are symmetrically installed on the inner wall of the limiting chute (701). The material of the guide shell (703) is a heat-conducting material.

6. The cutting device for a packaging bag laminating machine according to claim 5, wherein: A guide groove (704) is formed on the bottom outer wall of the guide shell (703). A heating plate (705) is installed on one side of the guide groove (704) and on the side wall of the guide shell (703). There are multiple groups of the electric control cylinder (702) which are respectively located on the outer wall of the mounting top plate (601).

7. A cutting device for a packaging bag laminating machine according to claim 6, characterized in that: One end of the electric control cylinder (702) is installed with a connecting plate (706). One end of the connecting plate (706) is connected to the outer wall of the guide shell (703). A hot air gun (707) is arranged in sequence from left to right on one side of the transverse slide rail (605) and on the inner wall of the mounting bracket (603).

8. A cutting device for a packaging bag laminating machine according to claim 1, characterized in that: The transmission assembly (8) includes a rotating shaft (801). The rotating shaft (801) is rotatably connected to the opposite inner walls of the mounting bracket (1). A driving roller (802) is installed on the outer wall of the rotating shaft (801). One end of the rotating shaft (801) penetrates through the mounting bracket (1) and extends to the outer wall of the mounting bracket (1) to install a driving wheel (803). A driving motor (804) is installed on the inner wall of the mounting bracket (1). A pulley (805) is arranged on the driving shaft of the driving motor (804). The pulley (805) is connected to the driving wheel (803) through a transmission belt. A conveyor belt (806) is arranged on the outer wall of the driving roller (802).

9. The cutting device for a packaging bag laminating machine according to claim 8, characterized in that: A film covering member (9) is provided on the outer wall of the winding cylinder (503), feet pads (10) are provided at the bottom corners of the mounting bracket (1), and the control panel (4) is electrically connected to a servo motor (501), a stepping motor (510), a downward pressing electric control cylinder (604), an electric control cylinder (702), a heating plate (705) and a hot air gun (707) respectively through wires.

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