A cutting device for winding film processing
By designing a cutting device consisting of a cutting component, a circulating push-pull component, and an stretching component, the problems of poor cutting effect and static electricity accumulation of stretch film were solved, achieving efficient, stable cutting effect and adaptability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI CHEER PACKAGING PROD CO LTD
- Filing Date
- 2025-04-15
- Publication Date
- 2026-06-05
Smart Images

Figure CN224323229U_ABST
Abstract
Description
Technical Field
[0001] This utility model mainly relates to the technical field of film cutting, specifically a cutting device for processing wrapping film. Background Technology
[0002] Cutting devices for stretch film processing are used to meet the packaging needs of products of different sizes and shapes. The cutting device can ensure that the cutting size of the stretch film is accurate, thereby avoiding waste and unnecessary costs. The cutting device is usually equipped with an automated control system, which can realize fast and continuous cutting operations, thereby improving production efficiency. Automated cutting devices can reduce manual operation, reduce labor costs, and improve the consistency and stability of cutting. However, existing cutting devices lack the structure to stretch the stretch film, which can easily lead to poor cutting results due to the shrinkage of the stretch film.
[0003] According to application number 202121921668.1, a wrapping film edge cutting device for preventing curling is provided, including a base, a housing on the top of the base, a sliding opening on the front surface of the housing, an installation mechanism on the bottom of the inner wall of the housing near the left side, a fixing mechanism on the right side of the installation mechanism, a cutting mechanism on the right side of the fixing mechanism, and a flattening mechanism on the right side of the fixing mechanism.
[0004] The aforementioned document describes how a flattening mechanism can completely flatten the stretch film, preventing curling edges and uneven cuts after cutting. However, it lacks the ability to cut stretch films of different widths, and flattening can easily lead to sliding wear and static electricity. Utility Model Content
[0005] Therefore, the purpose of this utility model is to provide a cutting device for stretch film processing to solve the technical problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A cutting device for stretch film processing includes a power supply base, a guide rail frame fixedly mounted on the top of the power supply base, a mounting bracket welded to the top of the middle section of the guide rail frame, a cutting component movably mounted at one end of the guide rail frame, a circulating push-pull component connected to the top of the cutting component, an stretching component at the middle section of the guide rail frame away from the cutting component, an edge cutting component at the middle section of the guide rail frame near the cutting component, two symmetrical sets of ballast components rotatably mounted at both ends of the edge of the guide rail frame, a synchronously connected drive component on the outer side of the guide rail frame, and a winding roller rotatably mounted at the tail end of the guide rail frame.
[0008] Preferably, the cutting component includes a blade holder slidably disposed at one end of the guide rail frame, sliders fixed on both sides of the blade holder, grooves matching the sliders on both sides of the guide rail frame, a beveled blade fixedly installed at the bottom of the blade holder, a metal guide frame fixedly installed on both sides of the guide rail frame at the bottom of the beveled blade, a grounding wire connected to one end of the metal guide frame, and a beveled groove frame at the end of the guide rail frame near the outside of the cutting component.
[0009] Preferably, the circulating push-pull component includes H-shaped connecting rods rotatably mounted on both sides of the guide rail frame, a first motor with its actuating end connected to the central shaft of the H-shaped connecting rod is mounted on the outer side of the guide rail frame, a connecting rod is rotatably connected to the connection point of the H-shaped connecting rod, and the other end of the connecting rod is hinged to the top of the tool holder.
[0010] Preferably, the stretching component includes four sets of rollers suspended below the mounting frame. A fleece belt is rolled in the middle of the two sets of rollers on each side. A first gear is fixedly installed in the middle of the two rollers near the side wall of the guide rail frame. Two second motors are installed on the top side of the mounting frame. A second gear is fixedly installed on the actuating end of the second motor. The first gear and the second gear in each set are connected by a first toothed belt.
[0011] Preferably, the edge trimming component includes two mounting rods that rotate vertically in the middle of the guide rail frame. The sidewalls of the mounting rods are provided with multiple equally spaced first screw holes. Two cutting circular blades are sleeved at both ends of the mounting rods. The cutting circular blades are provided with multiple second screw holes at both ends. Two meshing wide gears are fixed at the same end of the two mounting rods. A third motor with its actuating end connected to the central shaft of one of the mounting rods is installed on one side of the outer side of the guide rail frame.
[0012] Preferably, the ballast component includes a lower pressure roller rotatably disposed in the middle of the guide rail frame, rectangular grooves on both sides of the guide rail frame, a sliding rod vertically disposed inside the rectangular groove, a sliding sleeve sleeved in the middle of the sliding rod, a spring fixedly connected to the top of the sliding sleeve and connected to the rectangular groove, and an upper pressure roller rotatably connected in the middle of the two sliding sleeves.
[0013] Preferably, the driving component includes a third gear fixedly connected to one end of the lower pressure roller on one side of the outside of the guide rail frame, and two third gears are connected by a second toothed belt. A fourth motor with its actuating end connected to the other end of the lower pressure roller is installed on the other side of the outside of the guide rail frame.
[0014] In summary, this technical solution has the following main advantages:
[0015] This invention achieves automatic cyclic cutting of stretch film through the coordinated work of the circulating push-pull component and the cutting component, greatly improving cutting efficiency. At the same time, the design of the beveled cutter makes the cutting process smoother, reduces resistance during cutting, and further improves cutting speed. The setting of the metal guide frame and grounding wire effectively eliminates the static electricity accumulated by the stretch film during processing, avoiding problems such as sticking to the blade during cutting and difficulty in subsequent separation, ensuring cutting quality and smooth subsequent processing.
[0016] The rotating movement of the fleece belt unfolds the stretch film, facilitating cutting and solving the problem of uneven cuts and poor cutting results caused by the elastic shrinkage of the stretch film. At the same time, the cutting circular blade of the edge cutting component can be flexibly installed and adjusted according to the required cutting width, meeting the cutting needs of stretch film of different specifications. This allows the device to adapt to the cutting needs of stretch film of different specifications and materials. With simple adjustments, it can cut stretch film of different lengths and widths, demonstrating strong adaptability and flexibility. Attached Figure Description
[0017] Figure 1 This is an isometric view of the overall structure of this utility model;
[0018] Figure 2 This is an isometric schematic diagram of the overall structure of this utility model.
[0019] Figure 3 This is a side view of the overall structure of this utility model;
[0020] Figure 4 This is a partial structural breakdown diagram of the present invention. Figure 1 ;
[0021] Figure 5 This is a schematic diagram showing the disassembled structure of the extension component of this utility model;
[0022] Figure 6 This is a partial structural breakdown diagram of the present invention. Figure 2 .
[0023] Figure Descriptions: 10. Power supply base; 11. Guide rail frame; 12. Mounting bracket; 13. Cutting blade assembly; 14. Circulating push-pull assembly; 15. Stretching assembly; 16. Edge trimming assembly; 17. Ballast assembly; 18. Drive assembly; 19. Winding roller; 131. Blade holder; 132. Slider; 133. Slide groove; 134. Bevel cutter; 135. Metal guide frame; 136. Grounding wire; 137. Bevel groove frame; 141. H-shaped connecting rod; 142. First motor; 143. Connecting rod; 151. Roller 152. Wheel; 153. Fleece belt; 154. First gear; 155. Second motor; 156. First toothed belt; 161. Mounting rod; 162. First screw hole; 163. Cutting circular blade; 164. Second screw hole; 165. Wide gear; 166. Third motor; 171. Lower pressure roller; 172. Rectangular groove; 173. Slide rod; 174. Slide sleeve; 175. Spring; 176. Upper pressure roller; 181. Third gear; 182. Second toothed belt; 183. Fourth motor. Detailed Implementation
[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0025] Example
[0026] Please refer to the attached document carefully. Figure 1 , 2As shown in Figure 4, a cutting device for stretch film processing includes a power supply base 10, a guide rail frame 11 fixedly mounted on the top of the power supply base 10, a mounting bracket 12 welded to the top of the middle part of the guide rail frame 11, a cutting component 13 movably mounted at one end of the guide rail frame 11, a circulating push-pull component 14 connected to the top of the cutting component 13, an stretching component 15 at the middle part of the guide rail frame 11 away from the cutting component 13, an edge cutting component 16 at the middle part of the guide rail frame 11 near the cutting component 13, two sets of symmetrical ballast components 17 rotatably mounted at both ends of the edge of the guide rail frame 11, a synchronously connected drive component 18 on the outer side of the guide rail frame 11, and a winding roller 19 rotatably mounted at the tail end of the guide rail frame 11; the cutting component 13 includes a blade holder 131 slidably mounted at one end of the guide rail frame 11. The tool holder 131 has sliders 132 fixed on both sides, and the guide rail frame 11 has grooves 133 on both sides to match the sliders 132. The bottom of the tool holder 131 is fixedly installed with a beveled cutter 134. The bottom of the beveled cutter 134 is provided with metal guide frames 135 fixedly installed on both sides of the guide rail frame 11. One end of the metal guide frame 135 is connected to a grounding wire 136. The guide rail frame 11 has a beveled groove frame 137 at one end near the outside of the cutter component 13. The circulating push-pull component 14 includes an H-shaped connecting rod 141 rotatably installed on both sides of the guide rail frame 11. A first motor 142 is installed on one side of the guide rail frame 11, with the execution end connected to the central shaft of the H-shaped connecting rod 141. A connecting rod 143 is rotatably connected at the connection point of the H-shaped connecting rod 141, and the other end of the connecting rod 143 is hinged to the top of the tool holder 131.
[0027] As described above, the output end of the stretch film slides through the middle of the metal guide frame 135. The metal guide frame 135 eliminates the charge through the grounding wire 136, which can remove the static electricity accumulated by the stretch film during processing, preventing the problem of sticking to the blade during cutting and subsequent separation. When cutting the tail end, the first motor 142 drives the H-shaped connecting rod 141 to rotate, which drives the rotating connecting rod 143 to lift up and down. Through the hinge point, the blade holder 131 is driven to slide up and down in the slide groove 133 through the slider 132, so that the oblique cutting blade 134 reciprocates into the metal guide frame 135 to complete the cyclic cutting. By adjusting the speed of the first motor 142, different lengths of stretch film can be cut. The cut stretch film is stacked in the oblique groove frame 137.
[0028] Please refer to the attached document carefully. Figure 1 , 2As shown in Figures 3, 5, and 6, the stretching component 15 includes four sets of rollers 151 suspended below the mounting frame 12. A felt belt 152 rolls between the middle of two sets of rollers 151 on each side. A first gear 153 is fixedly installed between the middle of two rollers 151 near the side wall of the guide rail frame 11. Two second motors 154 are installed on the top side of the mounting frame 12. A second gear 155 is fixedly installed at the actuating end of each second motor 154. A first toothed belt 15 connects each set of first gears 153 and second gears 155. 6. Connection; The edge trimming component 16 includes two mounting rods 161 that are rotatably mounted in the middle of the guide rail frame 11. The side wall of the mounting rods 161 is provided with a plurality of equally spaced first screw holes 162. Two cutting circular blades 163 are sleeved at both ends of the mounting rods 161. The cutting circular blades 163 are provided with a plurality of second screw holes 164 at both ends. Two meshing wide gears 165 are fixed at the same end of the two mounting rods 161. A third motor 166 with its actuating end connected to the central shaft of one of the mounting rods 161 is mounted on one side of the outer side of the guide rail frame 11.
[0029] As described above, the bottom surface of the fleece belt 152 is pressed onto the stretch film. When the stretch film is supported in the middle by the two sets of pressing components 17, the two second motors 154 start in opposite directions, driving the second gear 155 to rotate. This, in turn, drives the roller 151 to rotate through the first toothed belt 156 and the first gear 153, thereby driving the fleece belt 152 to rotate and move. The two fleece belts 152 follow the operating logic of spreading outward from the side in contact with the stretch film, thus unfolding the stretch film in the middle of the two sets of pressing components 17, facilitating the cutting process. The cutting circular blade 163 is mounted on the mounting plate by screws. On the mounting rod 161, the two cutting circular blades 163 can be installed by matching the first screw hole 162 with the second screw hole 164 at different positions according to the required cutting width. This allows the spacing of the two cutting circular blades 163 to be adjusted. During installation, it is necessary to control the upper and lower cutting circular blades 163 to be in close contact to prevent the cutting point from deviating. When the third motor 166 starts, it drives one mounting rod 161 to rotate. Through two meshing wide gears 165, it drives the other mounting rod 161 to rotate at the same speed, so that each cutting circular blade 163 installed on the two mounting rods 161 can cut the edge of the wrapping film.
[0030] Please refer to the attached document carefully. Figure 1 , 2As shown in Figure 3, the ballast component 17 includes a lower pressure roller 171 rotatably mounted in the middle of the guide rail frame 11. The guide rail frame 11 has rectangular grooves 172 on both sides. A slide rod 173 is vertically mounted inside the rectangular groove 172. A slide sleeve 174 is sleeved in the middle of the slide rod 173. A spring 175 is fixedly connected to the top of the slide sleeve 174 and the top of the slide sleeve 174 is connected to the rectangular groove 172. An upper pressure roller 176 is rotatably connected in the middle of the two slide sleeves 174. The drive component 18 includes a third gear 181 fixedly connected to one end of the lower pressure roller 171 on one side of the outside of the guide rail frame 11. The two third gears 181 are connected by a second toothed belt 182. A fourth motor 183 with its actuating end connected to the other end of a lower pressure roller 171 is installed on the other side of the outside of the guide rail frame 11.
[0031] As described above, the spring 175 pushes the sliding sleeve 174 so that the upper pressure roller 176 presses tightly on the wrapping film to prevent it from unwinding. The fourth motor 183 drives the two lower pressure rollers 171 to rotate synchronously through the two third gears 181 and the second toothed belt 182, pulling the wrapping film out of the winding roller 19 and driving it forward.
[0032] The above embodiments are only for illustrating the technical concept of this utility model and should not be construed as limiting the scope of protection of this utility model. Any modifications made to the technical solution based on the technical concept proposed by this utility model shall fall within the scope of protection of this utility model.
Claims
1. A cutting device for stretch film processing, comprising a power supply base (10), wherein a guide rail frame (11) is fixedly mounted on the top of the power supply base (10), and a mounting bracket (12) is welded to the top of the middle part of the guide rail frame (11), characterized in that, A cutting component (13) is movably provided at one end of the guide rail frame (11). A circulating push-pull component (14) is connected to the top of the cutting component (13). An extension component (15) is provided at the middle of the guide rail frame (11) away from the cutting component (13). An edge cutting component (16) is provided at the middle of the guide rail frame (11) near the cutting component (13). Two sets of symmetrical ballast components (17) are rotatably provided at both ends of the edge of the guide rail frame (11). A synchronously connected drive component (18) is provided on the outer side of the guide rail frame (11). A winding roller (19) is rotatably installed at the tail end of the guide rail frame (11).
2. The cutting device for stretch film processing according to claim 1, characterized in that, The cutting component (13) includes a blade holder (131) slidably disposed at one end of the guide rail frame (11). Slider blocks (132) are fixed on both sides of the blade holder (131). Slider grooves (133) matching the sliders (132) are provided on both sides of the guide rail frame (11). A beveled blade (134) is fixedly installed at the bottom of the blade holder (131). A metal guide frame (135) is fixedly installed on both sides of the guide rail frame (11) at the bottom of the beveled blade (134). A grounding wire (136) is connected to one end of the metal guide frame (135). A beveled groove frame (137) is provided at one end of the guide rail frame (11) near the outside of the cutting component (13).
3. The cutting device for stretch film processing according to claim 2, characterized in that, The circulating push-pull component (14) includes H-shaped connecting rods (141) rotatably mounted on both sides of the guide rail frame (11). A first motor (142) with its execution end connected to the central shaft of the H-shaped connecting rod (141) is installed on the outer side of the guide rail frame (11). A connecting rod (143) is rotatably connected to the connection of the H-shaped connecting rod (141). The other end of the connecting rod (143) is hinged to the top of the tool holder (131).
4. The cutting device for stretch film processing according to claim 1, characterized in that, The stretching component (15) includes four sets of rollers (151) suspended below the mounting frame (12). A fleece belt (152) is rolled in the middle of the two sets of rollers (151) on each side. A first gear (153) is fixedly installed in the middle of the two rollers (151) near the side wall of the guide rail frame (11). Two second motors (154) are installed on the top side of the mounting frame (12). A second gear (155) is fixedly installed on the execution end of the second motor (154). The first gear (153) and the second gear (155) in each set are connected by a first toothed belt (156).
5. A cutting device for stretch film processing according to claim 1, characterized in that, The edge trimming component (16) includes two mounting rods (161) that rotate vertically in the middle of the guide rail frame (11). The side wall of the mounting rod (161) is provided with a plurality of equally spaced first screw holes (162). Two cutting circular blades (163) are sleeved at both ends of the mounting rod (161). The two ends of the cutting circular blades (163) are provided with a plurality of second screw holes (164). Two meshing wide gears (165) are fixed at the same end of the two mounting rods (161). A third motor (166) with its actuating end connected to the central shaft of one of the mounting rods (161) is installed on the outer side of the guide rail frame (11).
6. The cutting device for stretch film processing according to claim 1, characterized in that, The ballast component (17) includes a lower pressure roller (171) rotatably disposed in the middle of the guide rail frame (11). The guide rail frame (11) has rectangular grooves (172) on both sides. A slide rod (173) is vertically disposed inside the rectangular groove (172). A sliding sleeve (174) is sleeved in the middle of the slide rod (173). A spring (175) is fixedly connected to the top of the sliding sleeve (174) and the top of the sliding sleeve (174) is connected to the rectangular groove (172). An upper pressure roller (176) is rotatably connected in the middle of the two sliding sleeves (174).
7. A cutting device for stretch film processing according to claim 6, characterized in that, The drive component (18) includes a third gear (181) fixedly connected to one end of the lower pressure roller (171) on one side of the outside of the guide rail frame (11). The two third gears (181) are connected by a second toothed belt (182). A fourth motor (183) with its actuating end connected to the other end of one of the lower pressure rollers (171) is installed on the other side of the outside of the guide rail frame (11).