An improved plastic film cutting device and method of using the same

Abstract

The application discloses an improved plastic film cutting device and a use method thereof, which comprises a base, a fixing frame is arranged on one side of the base, a feeding assembly and two groups of material collecting assemblies are arranged on the top of the base, a plastic film body is wound on the feeding assembly, the other end of the plastic film body is wound on the material collecting assembly, and a fixing groove is arranged on the front side of the fixing frame. By starting the driving motor, the two fixing parts drive the wiping cotton to approach each other, so that the two wiping cottons conveniently cover the top and bottom of the plastic film body. Then, the speed reducer motor is started, the plastic film body is wound on the material collecting roller, the characteristics that the plastic film body moves and rubs against the wiping cotton are utilized, so that the dust on the surface of the plastic film body is conveniently wiped clean, the processing quality of the cutting device is improved, and the appearance of the plastic film body is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the field of plastic film processing, in particular to an improved plastic film cutting device and a use method thereof. BACKGROUND

[0002] Plastic film is commonly used for packaging and as a mulch layer. The share of plastic packaging and plastic packaging products in the market is increasing, especially composite plastic flexible packaging, which has been widely used in food, medicine, chemical industry and other fields. During the plastic film processing process, the plastic film needs to be wound, and during the winding process, the plastic film needs to be cut to meet the customer's requirements for the width of the plastic film. Therefore, a plastic film cutting device needs to be used.

[0003] For example, the existing Chinese patent (publication number: CN112224973A) discloses an improved plastic film cutting device. A adjusting seat is arranged below the base, two adjusting blocks are horizontally slidably connected on the adjusting seat, corresponding card slots are arranged on the adjusting seat for sliding and clamping the adjusting blocks, the bottom of the two adjusting blocks is provided with downward extending supporting arms, the lower end of the two supporting arms is horizontally provided with mounting blocks extending to the opposite side, the bottom surface of the mounting block is provided with a cutting knife, and the two adjusting blocks are driven to move relative to each other by an adjusting structure, so as to adjust the horizontal distance between the two cutting knives.

[0004] However, the improved plastic film cutting device has some disadvantages in actual application. Although the improved plastic film cutting device can cut plastic glass, its function is relatively single. Since there is static electricity on the surface of the plastic film after production, dust in the air is easily adsorbed, which makes the surface of the cut and wound plastic film have a lot of dust, which undoubtedly affects the quality and appearance of the film. Moreover, the cutting head of the improved plastic film cutting device is not convenient to replace. Since the cutting device needs to be used for a long time, the cutting head will inevitably become blunt over time. If the cutting head is not convenient to replace, it will not only cause great trouble to the maintenance personnel, but also affect the production efficiency.

[0005] Therefore, we design an improved plastic film cutting device and a use method thereof to solve the above problems. SUMMARY

[0006] The purpose of the present application is to solve the problems of excessive dust on the surface of the film after cutting and inconvenient replacement of the cutting head of the existing plastic film cutting device, and to provide an improved plastic film cutting device and a use method thereof.

[0007] In order to achieve the above object, the application provides the following technical scheme: an improved plastic film cutting device, comprising a base, a fixed frame is arranged on one side of the base, an upper feeding assembly and two sets of material receiving assemblies are arranged on the top of the base, a plastic film body is wound on the upper feeding assembly, the other end of the plastic film body is wound on the material receiving assembly, a fixed groove is arranged on the front side of the fixed frame, a bidirectional screw rod is rotatably connected in the fixed groove, two first nuts are symmetrically screwed on the bidirectional screw rod, a fixed piece is arranged on one side of the first nut, a first spring and a piston rod are arranged on one side of the fixed piece, a wiping plate is arranged on the other end of the first spring and the piston rod, wiping cotton is bonded on the side of the wiping plate away from the piston rod, the wiping cotton is matched with the outer surface of the plastic film body, a driving motor is arranged on the top of the fixed frame, the driving shaft of the driving motor is drivingly connected with one end of the bidirectional screw rod, a unidirectional screw rod is also rotatably connected in the fixed groove, a second nut is screwed on the unidirectional screw rod, an adjusting frame is arranged on one side of the second nut, chain wheels are fixedly sleeved on the unidirectional screw rod and the bidirectional screw rod, a transmission chain is jointly meshed and connected on the two chain wheels, a mounting piece is arranged on the bottom of the adjusting frame, a placing groove is arranged on the bottom of the mounting piece, and a blade is arranged in the placing groove.

[0008] As a further scheme of the application: the number of the first spring and the piston rod is multiple, and the multiple first springs and piston rods are equidistantly arranged on the opposite side of the fixed piece and the wiping plate.

[0009] As a further scheme of the application: a rotating shaft is rotatably arranged in the adjusting frame, a gear is fixedly sleeved on the rotating shaft, a motor is arranged on the top of the adjusting frame, the driving shaft of the motor is drivingly connected with one end of the rotating shaft, a guide rod is arranged in the adjusting frame, a rack is slidingly sleeved on the guide rod, the rack is meshed and connected with the gear, a connecting rod is arranged on the bottom of the rack, and the other end of the connecting rod is fixedly connected with the mounting piece.

[0010] As a further scheme of the application: a sliding cavity and a sliding opening are respectively arranged in the inside and the bottom of the adjusting frame, the rotating shaft is rotatably connected in the sliding cavity, both ends of the guide rod are arranged in the sliding cavity, the rack is slidingly connected in the sliding cavity, and the connecting rod is slidingly inserted in the sliding opening.

[0011] As a further further scheme of the present application: one end of the bottom of the adjusting frame is provided with a resisting rod, a sliding piece is slidably arranged in the mounting piece, one side of the sliding piece is provided with a positioning rod, one side of the blade is provided with a connecting groove matched with the positioning rod, the positioning rod is slidably inserted into the connecting groove, one side of the sliding piece is provided with a second spring, the other end of the second spring is fixedly connected with the mounting piece, one side of the mounting piece is provided with a sliding hole, a pull rod is slidably inserted into the sliding hole, the pull rod is fixedly connected with the sliding piece, and a pull block is arranged at the top end of the pull rod.

[0012] As a further further scheme of the present application: the mounting cavity is arranged in the mounting piece, the sliding piece is slidably connected in the mounting cavity, the two ends of the second spring are fixedly connected with the sliding piece and the side wall of the mounting cavity respectively, the sliding hole is communicated with the mounting cavity, and the number of the second springs is three.

[0013] As a further further scheme of the present application: the feeding assembly comprises a feeding rod, a feeding roller, two feeding frames and a first limiting piece, the feeding frame is arranged at the top of the base, the top of the feeding frame is provided with a first clamping groove, the feeding rod is slidably inserted into the first clamping groove, the feeding roller is fixedly sleeved on the feeding rod, one end of the plastic film body is wound on the feeding roller, and two first limiting pieces are arranged at the two ends of the feeding rod respectively, and the first limiting pieces abut against the feeding frame.

[0014] As a further further scheme of the present application: the top of the base is provided with two limiting frames, two limiting rollers are rotatably arranged on the opposite sides of the two limiting frames, and the plastic film body is located between the two limiting rollers and abuts against the limiting rollers.

[0015] As a further further scheme of the present application: the front side of the base is provided with a controller, the controller is electrically connected with the driving motor, the motor and the speed reducer, and the base is provided with a universal wheel at each corner of the bottom.

[0016] The application further discloses a use method of the improved plastic film cutting device.

[0017] S1. First, the feeding rod with the finished plastic film body is inserted into the first slot. Then, one end of the plastic film body is pulled to pass through the two limit rollers. Finally, one end of the plastic film body is wrapped around the take-up roller. Then, the drive motor is turned on to make the bidirectional screw rotate, so that the two first nuts drive the two fixing parts and the wiping cotton to move in opposite directions and move closer to each other until the two wiping cottons are in contact with the top and bottom of the plastic film body respectively. At this time, the reduction motor is turned on to make the plastic film body slowly wind around the take-up roller. During this process, since the wiping cotton is in contact with the top and bottom of the plastic film body, the outer surface of the plastic film body can be wiped, which can avoid the problem of dust on the plastic film body affecting the appearance and quality.

[0018] S1.1 As the plastic film on the feeding roller decreases as it is rolled onto the take-up roller, the take-up roller will have more and more film. This causes the film between the two wiping cotton to move upward. The film will then squeeze one of the wiping plates upward, and the other wiping plate will move upward due to the elastic force of the first spring. This allows the two wiping cotton to adhere to the top and bottom of the plastic film without affecting the winding of the plastic film.

[0019] S2. In S1, when the bidirectional screw rotates, the unidirectional screw will rotate because the transmission chain meshes with the two sprockets. At this time, the second nut will drive the adjustment frame and even the blade to move downward, so that the plastic film body can be cut. Then, as the plastic film body is wound on the take-up roller, the blade can continue to cut the plastic film body (44).

[0020] S3. When it is necessary to adjust the cutting width of the blade on the plastic film body, turn on the motor to make the rotating shaft drive the gear to rotate, so that the rack will move in the direction set by the guide rod. At the same time, the connecting rod will drive the mounting part and the blade to move, thereby adjusting the cutting width of the blade on the plastic film body, so that the width of the plastic film body can meet the needs of different customers.

[0021] S4. When it is necessary to disassemble and replace the blade, turn on the motor according to the principle in S3, so that the mounting part moves along the direction set by the guide rod until the stop rod pushes the pull block. During this process, the pull block will drive the pull rod to slide in the sliding hole, and the slide will drive the positioning rod to slide out of the connecting groove. Then the blade will automatically fall to the top of the base, which can be easily disassembled. Then insert the new blade into the placement groove, and then turn on the motor to make the mounting part move in the opposite direction. At this time, the second spring will push the positioning rod into the connecting groove due to its own elasticity, so as to achieve the effect of quick blade replacement.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1、 by opening the drive motor, the two fixed parts can drive the wiping cotton to move close to each other, so that the two wiping cotten can cover the top and bottom of the plastic film body, then cooperate with the opening of the reduction motor, so that the plastic film body is wound on the material collecting roller, and the dust on the surface of the plastic film body is wiped clean by the friction between the plastic film body and the wiping cotton, which not only improves the processing quality of the cutting device, but also improves the appearance of the plastic film body;

[0024] 2、 Since the plastic film on the feeding roller will become less and less during winding on the material collecting roller, the winding film on the material collecting roller will become more and more, so that the film between the two wiping cotten will move upward, at this time the film will extrude one of the wiping boards to move upward, then the other wiping board will also move upward due to the elastic force of the first spring, so that the two wiping cotten will be attached to the top and bottom of the plastic film without affecting the winding of the plastic film;

[0025] 3、 In the process of driving the motor to rotate the bidirectional screw, since the transmission chain is meshed with the two sprockets, the unidirectional screw will also rotate, at this time the second nut will drive the adjusting frame and the blade to move downward, that is, the plastic film body can be cut, then the blade can continuously cut the plastic film body as the plastic film body is wound on the material collecting roller, by controlling the bidirectional screw and the unidirectional screw to rotate at the same time through a single drive motor, different effects can be achieved, which can save the cost of using the plastic film cutting device, and the same as the concept of energy saving and environmental protection in China;

[0026] 4、 In addition, before starting the drive motor, when it is necessary to adjust the width of the blade for cutting the plastic film body, at this time the motor is started, the rotating shaft drives the gear to rotate, the rack drives the connecting rod, the mounting part and the blade to move in the direction provided by the guide rod, that is, the width of the blade for cutting the plastic film body can be adjusted, so that the width of the plastic film body can meet the needs of different customers;

[0027] 5、 When it is necessary to disassemble and replace the blade, personnel do not need to manually operate the blade clamping structure, only need to continue to start the motor according to the above operation principle until the abutment rod pushes the pull block, in this process, the pull block drives the pull rod to slide in the sliding hole, and the sliding part drives the positioning rod to slide out of the connecting groove, so that the blade can automatically fall on the top of the base, finally, the second spring inserts the positioning rod into the connecting groove due to its own elastic force, so that the blade can be clamped again, realizing the effect of quickly replacing the blade, through a single motor, different effects of cutting the plastic film body and replacing the blade can be achieved, which can improve the use effect of the plastic film cutting device. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present application;

[0029] Figure 2 It is the schematic diagram of the three-dimensional structure of the outer part of the transmission chain of the application;

[0030] Figure 3 It is the schematic diagram of the three-dimensional structure of the outer part of the side of the application;

[0031] Figure 4 It is the schematic diagram of the three-dimensional structure of the top view of the inside of the adjusting frame of the application;

[0032] Figure 5 It is the schematic diagram of the three-dimensional structure of the inside of the installation cavity of the application;

[0033] Figure 6 It is the schematic diagram of the three-dimensional structure of the outer part of the side of the fixing part of the application;

[0034] Figure 7 It is the enlarged view of A in the application; Figure 4

[0035] Figure 8 It is the enlarged view of B in the application; Figure 3

[0036] Figure 9 It is the schematic diagram of the three-dimensional structure of the outer part of the feeding roller of the application;

[0037] Figure 10 It is the enlarged view of C in the application. Figure 1

[0038] In the figure: 1, base; 2, fixing frame; 3, fixing groove; 4, bidirectional screw rod; 5, first nut; 6, fixing part; 7, first spring; 8, piston rod; 9, wiping plate; 10, wiping cotton; 11, driving motor; 12, unidirectional screw rod; 13, second nut; 14, adjusting frame; 15, chain wheel; 16, transmission chain; 17, mounting part; 18, blade; 19, rotating shaft; 20, gear; 21, motor; 22, guide rod; 23, rack; 24, connecting rod; 25, sliding port; 26, resisting rod; 27, sliding part; 28, positioning rod; 29, second spring; 30, sliding hole; 31, pulling rod; 32, pulling block; 33, feeding frame; 34, feeding rod; 35, feeding roller; 36, first limiting part; 37, limiting frame; 38, limiting roller; 39, collecting frame; 40, collecting rod; 41, collecting roller; 42, second limiting part; 43, speed reducer motor; 44, plastic film main body; 45, controller; 46, caster. DETAILED DESCRIPTION

[0039] ​​​With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0040] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "setting" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances. The embodiments of the present application will be described below according to the overall structure of the present application.

[0041] Please refer to Figures 1-6And 8-10, in the embodiment of the application, an improved plastic film cutting device, including base 1, one side of base 1 is provided with fixed frame 2, the top of base 1 is provided with feeding assembly and two sets of material receiving assembly, the feeding assembly is wound with plastic film body 44, the other end of plastic film body 44 is wound on the material receiving assembly, the front side of fixed frame 2 is provided with fixed groove 3, the fixed groove 3 is rotatably connected with bidirectional screw rod 4, the bidirectional screw rod 4 is symmetrically screwed with two first nuts 5, one side of the first nut 5 is provided with fixing piece 6, one side of the fixing piece 6 is provided with first spring 7 and piston rod 8, the other end of the first spring 7 and the piston rod 8 is provided with wiping plate 9, the side of the wiping plate 9 away from the piston rod 8 is bonded with wiping cotton 10, the wiping cotton 10 is matched with the outer surface of the plastic film body 44, the top of the fixed frame 2 is provided with driving motor 11, the driving shaft of the driving motor 11 is drivingly connected with one end of the bidirectional screw rod 4, the fixed groove 3 is also rotatably connected with unidirectional screw rod 12, the unidirectional screw rod 12 is screwed with second nut 13, one side of the second nut 13 is provided with adjusting frame 14, the unidirectional screw rod 12 and the bidirectional screw rod 4 are both fixedly sleeved with chain wheel 15, the two chain wheels 15 are jointly meshed with transmission chain 16, the bottom of the adjusting frame 14 is provided with mounting piece 17, the bottom of the mounting piece 17 is provided with placing groove, the placing groove is provided with blade 18;

[0042] The feeding assembly includes feeding rod 34, feeding roller 35, two feeding frames 33 and first limiting piece 36, the feeding frame 33 is arranged on the top of base 1, the top of the feeding frame 33 is provided with first clamping groove, the feeding rod 34 is slidingly inserted into the first clamping groove, the feeding roller 35 is fixedly sleeved on the feeding rod 34, one end of the plastic film body 44 is wound on the feeding roller 35, the two first limiting pieces 36 are respectively arranged at the two ends of the feeding rod 34, and the first limiting piece 36 is matched with the feeding frame 33, the material receiving assembly includes receiving rod 40, receiving roller 41, speed reducer 43, two receiving frames 39 and second limiting piece 42, the receiving frame 39 is arranged on the top of base 1 away from the feeding frame 33, the top of the receiving frame 39 is provided with second clamping groove, the receiving rod 40 is slidingly inserted into the second clamping groove, the receiving roller 41 is fixedly sleeved on the receiving rod 40, the two second limiting pieces 42 are respectively arranged at the two ends of the receiving rod 40, the speed reducer 43 is arranged on one side of one of the second limiting pieces 42, and the driving shaft of the speed reducer 43 is drivingly connected with one end of the receiving rod 40, the other end of the plastic film body 44 is wound on the receiving roller 41.

[0043] In this embodiment: first, the plastic film cutting device involves the electrical appliances are connected to the power supply, then the production of plastic film body 44 is rolled with the feeding rod 34 is connected in the first slot, then pull one end of the plastic film body 44, so that it passes through two limiting roller 38, finally the plastic film body 44 is wound on the receiving roller 41, then start the drive motor 11, make the bidirectional screw rod 4 rotation, so that the two first nut 5 drive two fixed parts 6 and wiping cotton 10 in the opposite direction and close to each other, until the two wiping cotton 10 respectively with the top and bottom of the plastic film body 44, at this time, start the reduction motor 43, make the plastic film body 44 slowly in the receiving roller 41 winding, in the process, because the wiping cotton 10 and the top and bottom of the plastic film body 44 are in contact, so as to wipe the outer surface of the plastic film body 44, that is, to avoid the problem of affecting the appearance and quality of the plastic film body 44, in the process of bidirectional screw rod 4 rotation, because the transmission chain 16 is engaged with the two sprocket 15, so that the one-way screw rod 12 will follow the rotation, at this time, the second nut 13 will drive the adjusting frame 14 and the blade 18 to move downward, that is, the plastic film body 44 can be cut, then with the winding of the plastic film body 44 on the receiving roller 41, the blade 18 can continue to cut the plastic film body 44.

[0044] It should be noted that, because the plastic film on the feeding roller 35 will be less and less in the process of winding on the receiving roller 41, at this time, the winding film on the receiving roller 41 will be more and more, so that the film between the two wiping cotton 10 will move upward, at this time, the film will extrude one of the wiping plate 9 upward, then the other wiping plate 9 will move upward due to the elastic force of the first spring 7, so that the two wiping cotton 10 will be attached to the top and bottom of the plastic film without affecting the winding of the plastic film.

[0045] Please refer to Figures 1-3 , 6 and 8, the number of first spring 7 and piston rod 8 is multiple, and multiple first spring 7 and piston rod 8 are equidistantly arranged on the opposite side of the fixed part 6 and the wiping plate 9.

[0046] In this embodiment: the stability of the connection between the fixed part 6 and the wiping plate 9 can be improved.

[0047] Please refer to Figure 1 , 3The adjusting frame 14 is provided with a rotating shaft 19, a gear 20 is sleeved on the rotating shaft 19, a motor 21 is arranged on the top of the adjusting frame 14, a driving shaft of the motor 21 is in transmission connection with one end of the rotating shaft 19, a guide rod 22 is arranged in the adjusting frame 14, a rack 23 is sleeved on the guide rod 22 in a sliding mode, the rack 23 is in meshing connection with the gear 20, a connecting rod 24 is arranged at the bottom of the rack 23, the other end of the connecting rod 24 is fixedly connected with the mounting piece 17, a sliding cavity and a sliding opening 25 are arranged at the inside and the bottom of the adjusting frame 14 respectively, the rotating shaft 19 is in rotating connection in the sliding cavity, both ends of the guide rod 22 are arranged in the sliding cavity, the rack 23 is in sliding connection in the sliding cavity, and the connecting rod 24 is in sliding insertion in the sliding opening 25.

[0048] In the embodiment, when the width of the plastic film body 44 cut by the blade 18 needs to be adjusted, the motor 21 is started, the rotating shaft 19 drives the gear 20 to rotate, the rack 23 moves in the direction arranged by the guide rod 22, at the same time, the connecting rod 24 drives the mounting piece 17 and the blade 18 to move, the width of the plastic film body 44 cut by the blade 18 is adjusted, and thus the width of the plastic film body 44 meets the needs of different customers.

[0049] Please refer to Figure 1 、 3 The one end of the bottom of the adjusting frame 14 is provided with a resisting rod 26, a sliding piece 27 is arranged in the mounting piece 17 in a sliding mode, one side of the sliding piece 27 is provided with a positioning rod 28, one side of the blade 18 is provided with a connecting groove matched with the positioning rod 28, the positioning rod 28 is in sliding insertion in the connecting groove, one side of the sliding piece 27 is provided with a second spring 29, the other end of the second spring 29 is fixedly connected with the mounting piece 17, one side of the mounting piece 17 is provided with a sliding hole 30, a pull rod 31 is in sliding insertion in the sliding hole 30, the pull rod 31 is fixedly connected with the sliding piece 27, the top end of the pull rod 31 is provided with a pull block 32, the mounting piece 17 is provided with a mounting cavity, the sliding piece 27 is in sliding connection in the mounting cavity, the two ends of the second spring 29 are fixedly connected with the sliding piece 27 and the side wall of the mounting cavity respectively, the sliding hole 30 is in communication with the mounting cavity, the number of the second springs 29 is three, and the three second springs 29 are arranged at equal intervals.

[0050] In this embodiment: when the blade 18 needs to be disassembled and replaced, at this time the motor 21 is started according to the principle in S3, the mounting piece 17 moves along the direction in which the guide rod 22 is arranged, until the abutting rod 26 pushes the pull block 32, in the process, the pull block 32 drives the pull rod 31 to slide in the sliding hole 30, and the sliding piece 27 drives the positioning rod 28 to slide out of the connecting groove, and then the blade 18 automatically falls on the top of the base 1, so that the blade 18 can be conveniently disassembled, then a new blade 18 is inserted into the placement groove, and then the motor 21 is started, so that the mounting piece 17 moves in the opposite direction, at this time the second spring 29 pushes the positioning rod 28 into the connecting groove due to its own elastic force, so that the blade 18 can be quickly replaced.

[0051] Please refer to Figure 1 and 3 , the top of the base 1 is provided with two limiting frames 37, the opposite sides of the two limiting frames 37 are rotationally provided with two limiting rollers 38, and the plastic film body 44 is located between the two limiting rollers 38 and abuts against the limiting rollers 38.

[0052] In this embodiment: when the plastic film body 44 moves, the two limiting rollers 38 move in opposite directions, so as to limit the plastic film body 44 and place the plastic film body 44 on the top of the base 1.

[0053] Please refer to Figure 1 and 3 , the front side of the base 1 is provided with a controller 45, the controller 45 is electrically connected with the driving motor 11, the motor 21 and the speed reducer 43, and the four corners of the bottom of the base 1 are provided with casters 46.

[0054] In this embodiment: the personnel can conveniently control the switches of the driving motor 11, the motor 21 and the speed reducer 43.

[0055] For the controller 45, by operating the controller 45, the controller 45 can send electric signals to the driving motor 11, the motor 21 and the speed reducer 43 and activate them, so as to conveniently control the driving motor 11, the motor 21 and the speed reducer 43. Since the controller 45 is prior art, it will not be described in this specification.

[0056] The following provides an improved use method of the improved plastic film cutting device.

[0057] S1, first the production of plastic film body 44 is wound with the feeding rod 34 is connected in the first slot, then pull one end of the plastic film body 44, so that it passes through two limiting roller 38, finally the plastic film body 44 is wound in the receiving roller 41, then open the drive motor 11, make the bidirectional screw rod 4 rotation, so that the two first nut 5 drive two fixed parts 6 and wiping cotton 10 in the opposite direction and each other close, until the two wiping cotton 10 respectively with the top and bottom of the plastic film body 44, at this time open the reduction motor 43, make the plastic film body 44 slowly in the receiving roller 41 on the winding, in the process, because the wiping cotton 10 and the top and bottom of the plastic film body 44 are all in contact, so as to wipe the outer surface of the plastic film body 44, that is, to avoid the problem of dust on the plastic film body 44 affecting the appearance and quality;

[0058] S1.1, because the plastic film on the feeding roller 35 in the process of winding on the receiving roller 41 will be less and less, at this time the winding film on the receiving roller 41 will be more and more, so that the film between the two wiping cotton 10 will move upward, at this time the film will extrude one of the wiping plate 9 upward, then the other wiping plate 9 will follow up because of the elastic force of the first spring 7, so that the two wiping cotton 10 will be attached to the top and bottom of the plastic film without affecting the winding of the plastic film;

[0059] S2, in S1, when the bidirectional screw rod 4 rotates, because the transmission chain 16 is connected with the two sprocket 15, the one-way screw rod 12 will follow the rotation, at this time the second nut 13 will drive the adjusting frame 14 and the blade 18 downward, that is, the plastic film body 44 can be cut, then with the winding of the plastic film body 44 on the receiving roller 41, the blade 18 can continuously cut the plastic film body 44;

[0060] S3, when the width of the plastic film body 44 is needed to be adjusted by the blade 18, at this time the motor 21 is opened, the shaft 19 drives the gear 20 to rotate, so that the rack 23 will move in the direction of the guide rod 22, at the same time, the connecting rod 24 will drive the mounting part 17 and the blade 18 to move, that is, the width of the plastic film body 44 can be adjusted by the blade 18, so that the width of the plastic film body 44 can meet the needs of different customers;

[0061] S4, when the need to replace the blade 18, at this time according to the principle of S3 open motor 21, so that the installation 17 along the guide rod 22 set the direction of movement until the push rod 26 push pull block 32, the process will pull block 32 will pull rod 31 in the sliding hole 30 sliding and make the slide 27 with the positioning rod 28 slide out of the connecting groove, then the blade 18 automatically fall on the top of the base 1, namely the blade 18 can be easily disassembled, then a new blade 18 inserted into the slot, then open the motor 21, so that the installation 17 reverse movement, at this time the second spring 29 will be due to its own elastic positioning rod 28 pushed into the connecting groove, namely the effect of quickly replace the blade 18.

[0062] The above description is only the preferred embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled in the art within the scope of the present application disclosed in the technical range, according to the technical scheme of the present application and the invention concept of equivalent replacement or change, should be covered within the protection scope of the present application.

Claims

1. An improved plastic film cutting device comprising a base (1), characterized in that, The side of the base (1) is provided with a fixed frame (2), the top of the base (1) is provided with a feeding assembly and two groups of material collecting assemblies, the feeding assembly is provided with a plastic film body (44), the other end of the plastic film body (44) is connected to the material collecting assembly, the front side of the fixed frame (2) is provided with a fixed groove (3), the fixed groove (3) is rotatably connected with a bidirectional screw rod (4), the bidirectional screw rod (4) is symmetrically screwed with two first nuts (5), one side of the first nut (5) is provided with a fixing piece (6), one side of the fixing piece (6) is provided with a first spring (7) and a piston rod (8), the other end of the first spring (7) and the piston rod (8) is provided with a wiping plate (9), the side of the wiping plate (9) away from the piston rod (8) is bonded with a wiping cotton (10), the wiping cotton (10) is matched with the outer surface of the plastic film body (44), the top of the fixed frame (2) is provided with a driving motor (11), the driving shaft of the driving motor (11) is drivingly connected with one end of the bidirectional screw rod (4). The fixed groove (3) is also rotatably connected with a one-way screw rod (12), the one-way screw rod (12) is screwed with a second nut (13), one side of the second nut (13) is provided with an adjusting frame (14), the one-way screw rod (12) and the bidirectional screw rod (4) are fixedly sleeved with a chain wheel (15), the two chain wheels (15) are jointly meshed with a transmission chain (16), the bottom of the adjusting frame (14) is provided with a mounting piece (17), the bottom of the mounting piece (17) is provided with a placing groove, the placing groove is provided with a blade (18).

2. The improved plastic film cutting device as claimed in claim 1, wherein, The number of the first spring (7) and the piston rod (8) is multiple, and multiple first springs (7) and piston rods (8) are equally spaced on the side opposite to the fixing piece (6) and the wiping plate (9).

3. The improved plastic film cutting device as claimed in claim 1, wherein, The adjusting frame (14) is rotatably provided with a rotating shaft (19), the rotating shaft (19) is fixedly sleeved with a gear (20), the top of the adjusting frame (14) is provided with a motor (21), the driving shaft of the motor (21) is drivingly connected with one end of the rotating shaft (19), the adjusting frame (14) is provided with a guide rod (22), the guide rod (22) is slidably sleeved with a rack (23), the rack (23) is meshingly connected with the gear (20), the bottom of the rack (23) is provided with a connecting rod (24), the other end of the connecting rod (24) is fixedly connected with the mounting piece (17).

4. The improved plastic film cutting device as claimed in claim 3, wherein, The inside and the bottom of the adjusting frame (14) are respectively provided with a sliding cavity and a sliding opening (25), the rotating shaft (19) is rotatably connected in the sliding cavity, both ends of the guide rod (22) are arranged in the sliding cavity, the rack (23) is slidably connected in the sliding cavity, the connecting rod (24) is slidably inserted in the sliding opening (25).

5. The improved plastic film cutting device as claimed in claim 1, wherein, One end of the bottom of the adjusting frame (14) is provided with a resisting rod (26), the mounting piece (17) is slidably provided with a sliding piece (27), one side of the sliding piece (27) is provided with a positioning rod (28), one side of the blade (18) is provided with a connecting groove matched with the positioning rod (28), the positioning rod (28) is slidably inserted into the connecting groove, one side of the sliding piece (27) is provided with a second spring (29), the other end of the second spring (29) is fixedly connected with the mounting piece (17), one side of the mounting piece (17) is provided with a sliding hole (30), a pull rod (31) is slidably inserted into the sliding hole (30), the pull rod (31) is fixedly connected with the sliding piece (27), and the top end of the pull rod (31) is provided with a pull block (32).

6. The improved plastic film cutting device as claimed in claim 5, wherein, The mounting piece (17) is provided with a mounting cavity, the sliding piece (27) is slidably connected in the mounting cavity, the two ends of the second spring (29) are fixedly connected with the sliding piece (27) and the side wall of the mounting cavity respectively, the sliding hole (30) is communicated with the mounting cavity, and the number of the second springs (29) is three.

7. The improved plastic film cutting device as claimed in claim 1, wherein, The feeding assembly comprises a feeding rod (34), a feeding roller (35), two feeding frames (33) and first limit pieces (36), the feeding frame (33) is arranged on the top of the base (1), the top of the feeding frame (33) is provided with a first clamping groove, the feeding rod (34) is slidably inserted into the first clamping groove, the feeding roller (35) is fixedly sleeved on the feeding rod (34), one end of the plastic film body (44) is wound on the feeding roller (35), and the two first limit pieces (36) are arranged at the two ends of the feeding rod (34) respectively, and the first limit pieces (36) abut against the feeding frame (33), the collecting assembly comprises a collecting rod (40), a collecting roller (41), a speed reducer (43), two collecting frames (39) and second limit pieces (42), the collecting frame (39) is arranged on the top of the base (1) away from the feeding frame (33) on one side, the top of the collecting frame (39) is provided with a second clamping groove, the collecting rod (40) is slidably inserted into the second clamping groove, the collecting roller (41) is fixedly sleeved on the collecting rod (40), and the two second limit pieces (42) are arranged at the two ends of the collecting rod (40) respectively, the speed reducer (43) is arranged on one side of one of the second limit pieces (42), and the driving shaft of the speed reducer (43) is in transmission connection with one end of the collecting rod (40), and the other end of the plastic film body (44) is wound on the collecting roller (41).

8. The improved plastic film cutting device as claimed in claim 1, wherein, The top of the base (1) is provided with two limiting frames (37), and two limiting rollers (38) are rotatably arranged on opposite sides of the two limiting frames (37), the plastic film body (44) is located between the two limiting rollers (38) and abuts against the limiting rollers (38).

9. The improved plastic film cutting device as claimed in claim 1, wherein, The front side of the base (1) is provided with a controller (45), the controller (45) is electrically connected with the driving motor (11), the motor (21) and the reduction motor (43), the four corners of the bottom of the base (1) are provided with the trundle (46).

10. A method of using an improved plastic film cutting device, comprising: The improved plastic film cutting device of any one of claims 1-9 comprises the following steps: S1, first, the loading rod (34) wound with the plastic film body (44) is clamped in the first clamping groove, then one end of the plastic film body (44) is pulled to pass through two limiting rollers (38), finally one end of the plastic film body (44) is wound around the receiving roller (41), then the driving motor (11) is started to rotate the bidirectional screw rod (4), so that the two first nuts (5) drive the two fixing members (6) and the wiping cotton (10) to move in opposite directions and approach each other until the two wiping cotts (10) respectively abut against the top and bottom of the plastic film body (44), at this time, the reduction motor (43) is started to slowly wind the plastic film body (44) on the receiving roller (41), during which, since the wiping cotton (10) abuts against the top and bottom of the plastic film body (44), the outer surface of the plastic film body (44) can be wiped, thereby avoiding the problem that dust on the plastic film body (44) affects the appearance and quality; S1.1, since the plastic film on the loading roller (35) will become less and less during winding on the receiving roller (41), the film between the two wiping cotts (10) will move upward, at this time, the film will press one of the wiping plates (9) to move upward, then the other wiping plate (9) will also move upward due to the elastic force of the first spring (7), so that the two wiping cotts (10) are attached to the top and bottom of the plastic film without affecting the winding of the plastic film; S2, in S1, when the bidirectional screw rod (4) rotates, since the transmission chain (16) is connected with the two sprockets (15), the unidirectional screw rod (12) will rotate, at this time, the second nut (13) drives the adjusting frame (14) and the blade (18) to move downward, thereby cutting the plastic film body (44), then, as the plastic film body (44) is wound on the receiving roller (41), the blade (18) continuously cuts the plastic film body (44); S3, when it is necessary to adjust the width of the blade (18) cutting the plastic film body (44), at this time, the motor (21) is started to rotate the shaft (19) to drive the gear (20) to rotate, so that the rack (23) moves in the direction provided by the guide rod (22), at the same time, the connecting rod (24) drives the mounting member (17) and the blade (18) to move, thereby adjusting the width of the blade (18) cutting the plastic film body (44), so that the width of the plastic film body (44) meets the needs of different customers. S4, when the need to replace the blade (18), at this time according to the principle of S3 start motor (21), make the installation (17) along the guide rod (22) set the direction of movement, until the resistance bar (26) push pull block (32) to the process, pull block (32) will pull rod (31) in the sliding hole (30) sliding, and make the slide (27) with positioning rod (28) slide out of the connecting groove, then the blade (18) automatically fall on the top of the base (1), namely the blade (18) can be easily disassembled, then the new blade (18) is inserted into the slot, and then start the motor (21), make the installation (17) reverse movement, at this time the second spring (29) will be due to its own elastic positioning rod (28) into the connecting groove, namely the effect of quick replacement of the blade (18).

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