Plastic film cutting device

Abstract

The invention relates to the technical field of plastic bag making, in particular to a plastic film cutting device which comprises an unwinding piece, a sealing piece and a bag dividing piece, the unwinding piece comprises a rotating frame and a guide hole frame, two pressing pieces are horizontally and rotatably connected to the upper portion of the rotating frame, film rolls are installed on the two pressing pieces in a penetrating mode respectively, the guide hole frame is fixed to one side of the rotating frame, and the sealing piece is fixed to the other side of the rotating frame. And a sealing piece is arranged on the other side of the guide hole frame and comprises two sliding frames, the two sliding frames are symmetrically and vertically arranged, two clamping rollers are horizontally and symmetrically arranged at the two ends between the two sliding frames, and a sealing frame is horizontally arranged between the two sliding frames. According to the plastic bag cutting device, a cutter is manually held by a hand to transversely move and cut a plastic bag, the cutting speed cannot be controlled during cutting, the too fast or too slow cutting action easily causes folding and deformation of the cut plastic bag during cutting, defective products are formed by cutting, the cutting yield of the plastic bag is influenced, and the later-period plastic bag cutting efficiency is influenced.

Description

Technical Field

[0001] The invention relates to the technical field of plastic bag making, in particular to a plastic film cutting device. Background Art

[0002] The production of plastic bags is generally completed through the following steps: plastic granular raw materials are mixed and melt-blown into film; the film is then wound into a roll, and the rolled plastic film is installed on a film roll cutting and bag-making device, cut into sections, and then the square plastic bags are stacked into a stack, and then cut into shape at one time with a cutter, and finally folded into stacks manually, and rubber bands are put on to bundles. In the prior art, the film rolls are mounted on the machine, and the film is sent to the cutting device through a series of tensioning rollers to prevent the film rolls from folding and deforming before cutting, resulting in cutting into defective products.

[0003] The existing announcement number is CN208438415U, and the name is a plastic film cutting device, including a feeding device, an edge sealing device, a feeding group and a cutting group. The edge sealing device includes a first side plate and a first base connected and fixed to the position of the first side plate, a first conveyor belt is provided on the first base, the first conveyor belt is arranged on the upper end surface of the first base, the first conveyor belt moves in the front and rear directions along the first base, the left and right sides of the first base are hinged with the first side plates, the feeding device is connected to the rear side of the edge sealing device, a cutting group is provided on the front side of the edge sealing device, a feeding group is connected between the edge sealing device and the cutting group, a material receiving box is connected to the front side of the cutting group, the feeding device is provided with a supporting frame and a raw material roller, the supporting frame supports and is fixed to the raw material roller, the cutting group includes a second side plate and a second base, a second conveyor belt is arranged on the upper end surface of the second base, and the second conveyor belt is plugged and connected to the first Two side panels, a plastic film cutting device, and a feeding device are connected to the support frame through a handle and a moving wheel. The moving wheel is provided with four groups to increase the stability of the feeding device, facilitate the movement of the entire feeding device, and expand the functionality of the feeding device. It is not limited to a single feeding of the device. A plurality of limit grooves are provided on the mounting side panels on the support frame with different position heights. The raw material rollers can be adjusted to their positions according to actual needs, and two groups of raw material rollers can be placed at the same time without sticking together. The design of the limit groove facilitates the replacement of the raw material rollers, and the first conveyor belt facilitates the transportation of the raw materials to the next operation process. The pressing roller flattens the two groups of raw material plastic films, making it convenient to enter the edge banding machine for edge banding and avoiding unevenness and misalignment. The plastic film cutting device ensures the uniformity of product specifications, automatically loads materials, reduces economic costs, and improves production efficiency.

[0004] However, when preparing the cut bags on the above-mentioned plastic film and cutting the composite plastic film to make bags, there is a lack of automatic cutting and sealing components, and the plastic bags are cut by hand-held knives that are moved horizontally. The cutting speed cannot be controlled during cutting. Cutting actions that are too fast or too slow can easily cause the cut plastic bags to fold and deform during cutting, resulting in defective products, thereby affecting the yield rate of the cut plastic bags and the efficiency of the subsequent cutting of the plastic bags. Summary of the invention

[0005] The present invention solves the problems in the related art and proposes a plastic film cutting device. When cutting composite plastic film to make bags, there is a lack of automatic cutting and sealing components. A manual handheld knife is used to move horizontally to cut the plastic bags. The cutting speed cannot be controlled during cutting. Too fast or too slow cutting actions can easily cause the plastic bags to fold and deform during cutting, resulting in defective products, thereby affecting the yield rate of the plastic bags and the efficiency of the subsequent plastic bag cutting.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical scheme: a plastic film cutting device, including a unwinding part, a sealing part and a bag dividing part, the unwinding part includes a rotating frame and a guide hole frame, the upper part of the rotating frame is horizontally rotatably connected to two clamping parts, and the film rolls are respectively installed on the two clamping parts, a guide hole frame is fixed on one side of the rotating frame, and a sealing part is arranged on the other side of the guide hole frame, the sealing part includes a sliding frame, the sliding frame is symmetrically vertically arranged with two pieces, and two clamping rollers are horizontally symmetrically arranged at both ends between the two sliding frames, a sealing frame is horizontally arranged between the two sliding frames, one end of the two sliding frames is fixed on one end face of the guide hole frame, and the other end of the two sliding frames is arranged with a bag dividing part, the bag dividing part includes a conveying frame and a slitting part, the conveying frame is horizontally fixed on the end faces of the two sliding frames, and a conveying belt is tensioned and connected to the conveying frame, and a slitting part is vertically arranged on the top surface of the conveying frame.

[0007] As a preferred solution, the clamping member includes a rotating shaft, which is horizontally rotatably connected to the rotating frame, and two hole bars are symmetrically arranged at the end of the rotating shaft, one end of the two hole bars is vertically fixed at the end of the rotating shaft, and a top plate is arranged on the outer side of the two hole bars.

[0008] As a preferred solution, a sliding rod is horizontally fixed on one side of the top plate close to the hole bar, and the sliding rod is horizontally slidably assembled in the hole bar, a first spring is horizontally fixed on the end of the sliding rod, and the other end of the first spring is fixed on the hole bar on the other side of the rotating shaft, and a rubber strip is fixed on the outer wall of the top plate.

[0009] As a preferred solution, sliding holes are vertically opened on the upper and lower end surfaces of the guide hole frame, and screw holes are opened in the middle of the upper and lower end surfaces of the guide hole frame. Two rotating rod frames are symmetrically arranged in the guide hole frame, and the two rotating rod frames are vertically slidably assembled in the guide hole frame.

[0010] As a preferred solution, the rotating rods at adjacent end surfaces of the two rotating rod frames are horizontally rotatably connected with pressure rollers, the screw holes of the guide hole frames are vertically threaded with adjusting screws, and the bottom ends of the adjusting screws are rotatably connected to the rotating rod frames.

[0011] As a preferred solution, both ends of the clamping roller are rotatably connected to a slider, and the slider is vertically slidably assembled in the sliding frame. A second spring is vertically arranged between adjacent sliders of the two clamping rollers of the sliding frame, and both ends of the second spring are respectively fixed on adjacent end surfaces of the slider.

[0012] As a preferred solution, multiple downward pressure rod racks are installed on the top surface of the sealing frame for horizontal and vertical sliding, and pressure wheels are horizontally rotatably connected to the bottom surfaces of the downward pressure rod racks on both sides of the sealing frame, a third spring is vertically fixed on the top surface of the downward pressure rod rack, and the bottom end of the third spring is fixed on the top surface of the sealing frame.

[0013] As a preferred solution, a hot pressing roller is horizontally rotatably connected to the bottom surface of the lower pressure rod frame in the middle of the sealing frame, and a support plate is horizontally arranged on the inner bottom surface of the sealing frame, and multiple elastic sheets are horizontally and vertically fixed on the bottom surface of the support plate, and the bottom surfaces of the multiple elastic sheets are fixed to the inner bottom surface of the sealing frame.

[0014] As a preferred embodiment, the cutting piece includes a gantry, which is vertically fixed on the top surface of the conveying frame, and a orifice plate is horizontally arranged inside the gantry, a downward pressure hydraulic rod is vertically fixed on the top surface of the gantry, and the output end of the downward pressure hydraulic rod is fixed on the top surface of the orifice plate, a fourth spring is vertically fixed on the top surface of the orifice plate, and the top end of the fourth spring is fixed on the top surface of the gantry, a hot cutting knife is horizontally fixed in the middle of the top surface of the orifice plate, and pressure plates are vertically slidably assembled on both sides of the orifice plate, a fifth spring is vertically sleeved on the upper part of the pressure plate, and the two ends of the fifth spring are respectively fixed to the end of the orifice plate and the pressure plate, a wind box is fixed on one side of the conveying frame, and the wind box is inserted into the interior of the conveying belt and is connected and fixed with multiple suction rods, an air pump is horizontally connected and fixed on one side of the outer wall of the wind box, and multiple through holes are vertically connected and connected on the conveying belt.

[0015] As a preferred solution, an electric heating plate is provided on the side of the bottom surface of the orifice plate away from the hot cutting knife, and the electric heating plate is vertically slid through and assembled on the orifice plate, a sixth spring is vertically sleeved on the upper part of the electric heating plate, and the two ends of the sixth spring are respectively fixed on the end of the orifice plate and the electric heating plate, a sealing telescopic rod is vertically fixed on the orifice plate, and the output end of the sealing telescopic rod is fixed on the electric heating plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: during use, two rolls of plastic film are inserted into the pressing part of the rotating frame, and then the two rolls of plastic film are guided by the guide hole frame to send the two layers of plastic film through the sealing part, and the sealing part is used to heat-seal the two sides of the two layers of plastic film, and then the plastic films after the heat sealing on both sides are cut and sheared by the slitting parts on the bag dividing part, and then cut and separated, so that when preparing the cut bags on the plastic film and cutting the composite plastic film for bag making, an automatic cutting and sealing component is set, and the manual hand-held tool is no longer used to move the plastic bag horizontally, thereby avoiding the inability to control the cutting speed during cutting. Too fast or too slow cutting actions are likely to cause folding and deformation during cutting of the plastic bag, resulting in cutting into defective products, thereby affecting the yield rate of cutting plastic bags and the efficiency of cutting plastic bags in the later stage. The automatic cutting ensures the yield rate of plastic bag cutting and the efficiency of cutting plastic bags. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the plastic film cutting device; Figure 2 is a schematic diagram of the structure of the plastic film cutting device in an overall exploded state; Figure 3 2 is a schematic diagram of the structure of the unwinding member in the embodiment of the plastic film cutting device in a disassembled state; Figure 4 is a schematic structural diagram of a pressing member in a disassembled state in an embodiment of a plastic film cutting device; Figure 5 is a schematic structural diagram of a sealing member in a disassembled state in an embodiment of a plastic film cutting device; Figure 6 is a schematic structural diagram of a sealing frame in a disassembled state in an embodiment of a plastic film cutting device; Figure 7 2 is a schematic diagram of the structure of the bag dispensing member in the embodiment of the plastic film cutting device in a disassembled state; Figure 8 It is a schematic structural diagram of a cutting piece in a disassembled state in an embodiment of a plastic film cutting device.

[0018] In the figure: 1. Unwinding member; 11. Rotating frame; 12. Pressing member; 121. Rotating shaft; 122. Hole strip; 123. Top plate; 124. Sliding rod; 125. First spring; 13. Guide hole frame; 131. Screw hole; 14. Rotating rod frame; 15. Pressing roller; 16. Adjusting screw; 2. Sealing member; 21. Sliding frame; 22. Clamping roller; 23. Sliding block; 24. Second spring; 25. Sealing frame; 251. Lower pressing rod frame; 252. Third Spring; 253, pressure wheel; 254, hot pressing roller; 255, support plate; 256, elastic sheet; 3, bag dividing piece; 31, conveyor frame; 32, conveyor belt; 33, slitting piece; 331, gantry; 332, orifice plate; 3321, fourth spring; 333, downward pressure hydraulic rod; 334, hot cutting knife; 335, pressure plate; 336, fifth spring; 337, sealing telescopic rod; 338, electric heating plate; 339, sixth spring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0021] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0022] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0023] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0024] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0025] like Figures 1 to 8As shown, a plastic film cutting device includes a reeling member 1, a sealing member 2 and a bagging member 3. The reeling member 1 includes a rotating frame 11 and a guide hole frame 13. The upper part of the rotating frame 11 is horizontally rotatably connected to two pressing members 12, and the two pressing members 12 are respectively penetrated and installed with film rolls. The guide hole frame 13 is fixed on one side of the rotating frame 11, and the sealing member 2 is arranged on the other side of the guide hole frame 13. The sealing member 2 includes a sliding frame 21, and the sliding frame 21 is symmetrically vertically arranged with two pieces, and the two Two clamping rollers 22 are horizontally and symmetrically arranged at both ends of the two sliding frames 21, and a sealing frame 25 is horizontally arranged between the two sliding frames 21. One end of the two sliding frames 21 is fixed to one end surface of the guide hole frame 13, and the other end of the two sliding frames 21 is provided with a bag dividing member 3, which includes a conveying frame 31 and a cutting member 33. The conveying frame 31 is horizontally fixed to the end surfaces of the two sliding frames 21, and a conveying belt 32 is tensioned and connected to the conveying frame 31. The slitting piece 33 is vertically arranged on the top surface of the feeding rack 31. During use, two rolls of plastic film are inserted into the pressing piece 12 of the rotating rack 11, and then the two rolls of plastic film are guided by the guide hole rack 13 to send the two layers of plastic film through the sealing piece 2, and the sealing piece 2 is used to heat-seal the two sides of the two layers of plastic film. Then, the plastic film after heat-sealing on both sides is cut and sheared by the slitting piece 33 on the bag dividing piece 3, and then cut and separated. Therefore, when preparing the cut bags on the plastic film and cutting the composite plastic film for bag making, an automatic cutting and sealing component is set, and the manual hand-held tool is no longer used to move the plastic bag horizontally, thereby avoiding the inability to control the cutting speed during cutting. Too fast or too slow cutting actions are likely to cause folding and deformation during cutting of the plastic bag, resulting in defective products being cut, thereby affecting the yield rate of the cut plastic bag and the efficiency of the later plastic bag cutting. The automatic cutting ensures the yield rate of the plastic bag cutting and the efficiency of the plastic bag cutting.

[0026] In one embodiment, Figure 2 and 4As shown, the pressing member 12 includes a rotating shaft 121, which is horizontally rotatably connected to the rotating frame 11, and two hole bars 122 are symmetrically arranged at the end of the rotating shaft 121, one end of the two hole bars 122 is vertically fixed to the end of the rotating shaft 121, and a top plate 123 is arranged on the outer side of the two hole bars 122, and a sliding rod 124 is horizontally fixed on the side of the top plate 123 close to the hole bar 122, and the sliding rod 124 is horizontally slidably assembled in the hole bar 122, and a first spring 125 is horizontally fixed at the end of the sliding rod 124, and the first spring The other end of 125 is fixed on the hole strip 122 on the other side of the rotating shaft 121, and a rubber strip is fixed on the outer wall of the top plate 123. During use, the plastic film roll is inserted into the rotating shaft 121 of the pressing member 12, and then the inner wall of the plastic film roll squeezes the sliding rod 124 on the top plate 123 to slide horizontally on the hole strip 122, squeezing the first spring 125 to deform. The deformation force of the first spring 125 pushes the top plate 123 to slide horizontally on the hole strip 122, pushing the top plate 123 to press against the inner wall of the plastic film roll, thereby pressing and installing the plastic film roll to keep it stable.

[0027] In one embodiment, Figure 2 and 3 As shown, sliding holes are vertically penetrated on the upper and lower end surfaces of the guide hole frame 13, and screw holes 131 are penetrated in the middle of the upper and lower end surfaces of the guide hole frame 13, two rotating rod frames 14 are symmetrically arranged in the guide hole frame 13, and the two rotating rod frames 14 are vertically slidably assembled in the guide hole frame 13, and the rotating rods of the adjacent end surfaces of the two rotating rod frames 14 are horizontally rotatably connected with pressure rollers 15, and the vertical threads in the screw holes 131 of the guide hole frame 13 are penetrated and assembled with adjusting screws 16, and the bottom ends of the adjusting screws 16 are rotatably connected to the rotating rod frames 14. In use, in order to tension and overlap the two layers of plastic film together, the adjusting screws 16 in the screw holes 131 of the guide hole frame 13 are rotated to push the two rotating rod frames 14 in the guide hole frame 13 to slide vertically, and the two rotating rod frames 14 in the guide hole frame 13 move vertically relative to each other, driving the pressure rollers 15 to move relative to each other to vertically press the two plastic films together, so as to facilitate the later preparation of a bag body with a hollow structure.

[0028] In one embodiment, Figure 2 and 3As shown, both ends of the clamping roller 22 are rotatably connected with a slider 23, and the slider 23 is vertically slidably assembled in the sliding frame 21, and a second spring 24 is vertically arranged between the two adjacent sliders 23 of the two clamping rollers 22 of the sliding frame 21, and the two ends of the second spring 24 are respectively fixed on the adjacent end faces of the slider 23. In order to perform heat-sealing on both sides of the two laminated plastic films, the two laminated plastic films are guided and extruded tightly together by the two clamping rollers 22 of the sliding frame 21, and then the slider 23 is rotatably connected on the rotating shaft at the end of the two clamping rollers 22 of the sliding frame 21. Under the action of the deformation force of the adjacent second spring 24, the slider 23 is driven to rotate and connect on the rotating shaft at the end of the two clamping rollers 22 to slide vertically on the sliding frame 21, so as to drive the two clamping rollers 22 to guide the two laminated plastic films to be extruded tightly together.

[0029] In one embodiment, Figure 2 , 5 As shown in Figure 6, a plurality of downward pressure rod frames 251 are installed on the top surface of the sealing frame 25 so as to slide horizontally and vertically, and pressure wheels 253 are connected to the bottom surfaces of the downward pressure rod frames 251 on both sides of the sealing frame 25 so as to rotate horizontally, a third spring 252 is vertically fixed to the top surface of the downward pressure rod frames 251, and the bottom end of the third spring 252 is fixed to the top surface of the sealing frame 25, a hot pressing roller 254 is connected to the bottom surface of the downward pressure rod frames 251 in the middle part of the sealing frame 25 so as to rotate horizontally, and a support plate 255 is horizontally arranged on the inner bottom surface of the sealing frame 25, and a plurality of elastic sheets 256 are fixed to the bottom surface of the support plate 255 so as to slide horizontally and vertically, and the bottom surfaces of the plurality of elastic sheets 256 are fixed to the inner bottom surface of the sealing frame 25 During use, the two sides of the two laminated plastic films are guided into the sealing frame 25, and then the two laminated plastic films are in the sealing frame 25, and the bottom of the plastic film is carried by the support plate 255 to move upward, and then the support plate 255 is elastically supported by multiple elastic sheets 256 to ensure that the support plate 255 carrying the plastic film moves upward, and then the lower pressure rod frame 251 slides vertically on the top of the sealing frame 25 under the deformation force of the third spring 252, driving the pressure wheel 253 to squeeze the plastic film downward, and the top of the plastic film is squeezed and stuck together by the pressure wheel 253, and the moving plastic film is squeezed by the hot pressing roller 254, so that the plastic film is hot-pressed and stuck together for sealing, thereby sealing both sides of the moving plastic film to form a bag body.

[0030] In one embodiment, Figure 2 , 7The cutting piece 33 shown in Figure 8 includes a gantry 331, which is vertically fixed on the top surface of the conveying frame 31, and a perforated plate 332 is horizontally arranged inside the gantry 331, a downward pressure hydraulic rod 333 is vertically fixed on the top surface of the gantry 331, and the output end of the downward pressure hydraulic rod 333 is fixed on the top surface of the perforated plate 332, a fourth spring 3321 is vertically fixed on the top surface of the perforated plate 332, and the top end of the fourth spring 3321 is fixed on the top surface of the gantry 331, a hot cutting knife 334 is horizontally fixed in the middle of the top surface of the perforated plate 332, and both sides of the perforated plate 332 are vertically slidably assembled with a pressing plate 335, and the pressing plate A fifth spring 336 is vertically sleeved on the upper part of 335, and the two ends of the fifth spring 336 are respectively fixed to the end of the orifice plate 332 and the pressure plate 335. A wind box 34 is fixed on one side of the conveying frame 31, and the wind box 34 is inserted into the interior of the conveying belt 32 and connected to and fixed with a plurality of suction rods 35. A wind pump 36 is horizontally connected and fixed on one side of the outer wall of the wind box 34. A plurality of through holes are vertically connected and connected on the conveying belt 32. An electric heating plate 338 is arranged on the bottom surface of the orifice plate 332 away from the hot cutting knife 334, and the electric heating plate 338 is vertically slid through and assembled on the orifice plate 332. A sixth spring 336 is vertically sleeved on the upper part of the electric heating plate 338. The spring 339 is provided, and the two ends of the sixth spring 339 are respectively fixed to the end of the orifice plate 332 and the electric heating plate 338. A sealing telescopic rod 337 is vertically fixed to the orifice plate 332, and the output end of the sealing telescopic rod 337 is fixed to the electric heating plate 338. In use, in order to transport the plastic film after the sealing on both sides through the conveyor belt 32 on the conveyor frame 31, in order to ensure that the plastic film is tightly attached to the conveyor belt 32 during transportation, the air pump 36 is started to drive air into the suction rod 35, and the negative pressure of the air flow causes the plastic film to be tightly attached to the conveyor belt 32, so that the plastic film is transported and moved on the conveyor belt 32 to reach the cutting Under the component 33, the downward pressing hydraulic rod 333 is started to extend downward, pushing the orifice plate 332 to be pressed vertically downward, driving the pressure plates 335 on both sides of the orifice plate 332 to move vertically downward, and the pressure plates 335 are pushed by the deformation force of the fifth spring 336 to press the two sides of the plastic film to be cut, and the downward moving orifice plate 332 drives the hot cutting knife 334 to move vertically downward to perform heat cutting on the plastic film, and then the sealing telescopic rod 337 is started to move vertically downward to drive the electric heating plate 338 to move vertically downward, and the electric heating plate 338 is used to heat seal one end of the cut bag body, thereby completing the sealing process of the plastic film.

[0031] In this embodiment, two rolls of plastic film are inserted into the pressing member 12 of the rotating frame 11 during use, and then the two rolls of plastic film are guided through the guide hole frame 13 to send the two layers of plastic film through the sealing member 2, and the two sides of the two laminated plastic films are guided into the sealing frame 25, and then the two laminated plastic films are in the sealing frame 25, and the bottom of the plastic film is carried by the support plate 255 to move upward, and then the support plate 255 is elastically supported by multiple elastic sheets 256 to ensure that the support plate 255 carrying the plastic film moves upward, and then the lower pressure rod frame 251 is pressed on the third elastic sheet. The spring 252 slides vertically on the top of the sealing frame 25 under the deformation force, driving the pressing wheel 253 to press the plastic film downward. The top of the plastic film is pressed and fitted together by the pressing wheel 253. The moving plastic film is pressed by the hot pressing roller 254, so that the plastic film is hot-pressed and fitted to be sealed. The sealing member 2 is used to heat-seal the two sides of the two layers of plastic film. In order to transport the plastic film after the sealing on both sides is completed, it is transported by the conveying belt 32 on the conveying frame 31. During transportation, in order to ensure that the plastic film is tightly fitted on the conveying belt 32, the air pump 36 is started. The air is driven into the suction rod 35, and the negative pressure of the air flow causes the plastic film to be closely attached to the conveyor belt 32, ensuring that the plastic film is transported and moved on the conveyor belt 32, and reaches below the slitting piece 33, and the downward pressure hydraulic rod 333 is started to extend downward, pushing the orifice plate 332 to be vertically pressed down, driving the pressure plates 335 on both sides of the orifice plate 332 to move vertically downward, and the pressure plates 335 are pushed by the deformation force of the fifth spring 336 to press the two sides of the plastic film to be cut, and the downward moving orifice plate 332 drives the hot cutting knife 334 to move vertically downward , the plastic film is heat-cut, and then the sealing telescopic rod 337 is started to move vertically downward to drive the electric heating plate 338 to move vertically downward, and the electric heating plate 338 is used to heat-seal one end of the cut bag body, and then the plastic film after heat-sealing on both sides is cut and sheared by the cutting piece 33 on the bag dividing piece 3, and then cut and separated, so that when preparing the cut bags on the plastic film, when cutting the composite plastic film to make bags, an automatic cutting and sealing component is set, and the plastic bag is no longer cut by using a human hand-held tool to move horizontally.

[0032] The above are preferred implementation modes of the present invention. Those skilled in the art to which the present invention belongs can also change and modify the above implementation modes. Therefore, the present invention is not limited to the above specific implementation modes. Any obvious improvements, substitutions or modifications made by those skilled in the art on the basis of the present invention belong to the protection scope of the present invention.

Claims

1. A plastic film cutting device, characterized in that: The invention comprises a roll unwinding part (1), a sealing part (2) and a bag dividing part (3), wherein the roll unwinding part (1) comprises a rotating frame (11) and a guide hole frame (13), wherein the upper part of the rotating frame (11) is horizontally rotatably connected to two clamping parts (12), and the two clamping parts (12) are respectively provided with film rolls, a guide hole frame (13) is fixed on one side of the rotating frame (11), and the sealing part (2) is arranged on the other side of the guide hole frame (13), and the sealing part (2) comprises a sliding frame (21), wherein the sliding frame (21) is symmetrically vertically arranged in two pieces, and both ends between the two sliding frames (21) are horizontally Two clamping rollers (22) are symmetrically arranged, a sealing frame (25) is horizontally arranged between the two sliding frames (21), one end of the two sliding frames (21) is fixed to one end surface of the guide hole frame (13), and the other end of the two sliding frames (21) is provided with the bag dividing member (3), the bag dividing member (3) comprises a conveying frame (31) and a slitting member (33), the conveying frame (31) is horizontally fixed to the end surfaces of the two sliding frames (21), and a conveying belt (32) is tensionedly connected to the conveying frame (31), and a slitting member (33) is vertically arranged on the top surface of the conveying frame (31).

2. A plastic film cutting device according to claim 1, characterized in that: The pressing member (12) comprises a rotating shaft (121), the rotating shaft (121) being horizontally rotatably connected to the rotating frame (11), and two hole bars (122) being symmetrically arranged at the end of the rotating shaft (121), one end of the two hole bars (122) being vertically fixed to the end of the rotating shaft (121), and a top plate (123) being arranged on the outer sides of the two hole bars (122).

3. A plastic film cutting device according to claim 2, characterized in that: A sliding rod (124) is horizontally fixed to one side of the top plate (123) close to the hole bar (122), and the sliding rod (124) is horizontally slidably assembled in the hole bar (122), a first spring (125) is horizontally fixed to the end of the sliding rod (124), and the other end of the first spring (125) is fixed to the hole bar (122) on the other side of the rotating shaft (121), and a rubber strip is fixed to the outer wall of the top plate (123).

4. A plastic film cutting device according to claim 3, characterized in that: The upper and lower end surfaces of the guide hole frame (13) are vertically penetrated with sliding holes, and the middle parts of the upper and lower end surfaces of the guide hole frame (13) are penetrated with screw holes (131), and two rotating rod frames (14) are symmetrically arranged in the guide hole frame (13), and the two rotating rod frames (14) are vertically slidably assembled in the guide hole frame (13).

5. A plastic film cutting device according to claim 4, characterized in that: A pressure roller (15) is horizontally rotatably connected to the rotating rods at the adjacent end surfaces of the two rotating rod frames (14); an adjusting screw rod (16) is assembled through a vertical thread in the screw hole (131) of the guide hole frame (13); and the bottom end of the adjusting screw rod (16) is rotatably connected to the rotating rod frame (14).

6. A plastic film cutting device according to claim 5, characterized in that: Both ends of the clamping roller (22) are rotatably connected to a slider (23), and the slider (23) is vertically slidably assembled in the slide frame (21). A second spring (24) is vertically arranged between two adjacent sliders (23) of the two clamping rollers (22) of the slide frame (21), and both ends of the second spring (24) are respectively fixed to adjacent end surfaces of the slider (23).

7. A plastic film cutting device according to claim 6, characterized in that: A plurality of downward pressure rod frames (251) are installed on the top surface of the sealing frame (25) in a horizontally and vertically sliding manner, and pressure wheels (253) are horizontally rotatably connected to the bottom surfaces of the downward pressure rod frames (251) on both sides of the sealing frame (25), and a third spring (252) is vertically fixed on the top surface of the downward pressure rod frame (251), and the bottom end of the third spring (252) is fixed to the top surface of the sealing frame (25).

8. A plastic film cutting device according to claim 7, characterized in that: A hot pressing roller (254) is rotatably connected to the bottom surface of the lower pressure rod frame (251) in the middle of the sealing frame (25), and a support plate (255) is horizontally arranged on the inner bottom surface of the sealing frame (25), and a plurality of elastic sheets (256) are laterally and vertically fixed on the bottom surface of the support plate (255), and the bottom surfaces of the plurality of elastic sheets (256) are fixed to the inner bottom surface of the sealing frame (25).

9. A plastic film cutting device according to claim 8, characterized in that: The slitting piece (33) comprises a gantry (331), the gantry (331) is vertically fixed on the top surface of the conveying frame (31), and a perforated plate (332) is horizontally arranged inside the gantry (331), a downward pressure hydraulic rod (333) is vertically fixed on the top surface of the gantry (331), and the output end of the downward pressure hydraulic rod (333) is fixed on the top surface of the perforated plate (332), a fourth spring (3321) is vertically fixed on the top surface of the perforated plate (332), and the top end of the fourth spring (3321) is fixed on the top surface of the gantry (331), and a spring (3321) is horizontally fixed in the middle of the top surface of the perforated plate (332). A hot cutting knife (334) is provided, and both sides of the orifice plate (332) are vertically slidably assembled with a pressure plate (335), the upper part of the pressure plate (335) is vertically sleeved with a fifth spring (336), and the two ends of the fifth spring (336) are respectively fixed to the end of the orifice plate (332) and the pressure plate (335), a wind box (34) is fixed to one side of the conveying frame (31), and the wind box (34) is inserted into the interior of the conveying belt (32) and is connected and fixed with a plurality of suction rods (35), an outer wall of the wind box (34) is horizontally connected and fixed with an air pump (36), and a plurality of through holes are vertically penetrated and connected to the conveying belt (32).

10. A plastic film cutting device according to claim 9, characterized in that: An electric heating plate (338) is provided on the side of the bottom surface of the orifice plate (332) away from the hot cutting knife (334), and the electric heating plate (338) is vertically slid through and assembled on the orifice plate (332), a sixth spring (339) is vertically sleeved on the upper part of the electric heating plate (338), and the two ends of the sixth spring (339) are respectively fixed to the end of the orifice plate (332) and the electric heating plate (338), a sealing telescopic rod (337) is vertically fixed on the orifice plate (332), and the output end of the sealing telescopic rod (337) is fixed on the electric heating plate (338).

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