A bottom cover opening device for a carton opener

Abstract

This utility model discloses a bottom cover opening device for a carton opener, belonging to the field of automatic carton opening technology. It includes a first frame, a set of opposing bottom cover opening structures, a first conveying positioner, and a first fixing device. The first frame is mounted on a conveying device. The first conveying positioner is installed on the conveying device or the first frame and can position the carton along the moving direction. The first fixing device can fix the position of the carton on the conveying device. The bottom cover opening structures can be used to open the bottom cover of the carton. This solves the technical problems of low automation rate, low opening efficiency, and high labor intensity in the manual opening of traditional cartons.

Description

Technical Field

[0001] This utility model relates to the field of automatic packaging box opening technology, and in particular to a bottom cover opening device for a box opener. Background Technology

[0002] Currently, many items are packaged in cardboard boxes for safe transportation. For example, in the production of standard cigarettes, cardboard boxes are used to pack the finished cigarettes. Therefore, if unopened cardboard boxes are needed to pack standard cigarettes or to remove them from the boxes, the carton opening production line requires cutting the sealing tape, opening the side covers, pushing out the cigarettes, and removing the empty boxes. Taking a packaging box with left and right openings, each opening including four side covers, as an example, the outer top and bottom covers and the two inner side covers are all part of the packaging box. Opening the side covers involves opening the top, bottom, and inner side covers. Currently, the side cover opening process is done manually, resulting in low efficiency, repetitive mechanization, and high labor intensity and fatigue for workers. Therefore, it is necessary to invent a bottom cover opening device for a carton opening machine to automatically open the top cover of the packaging box in the standard cigarette removal production line, thereby improving automation, increasing opening efficiency, and reducing labor intensity. Utility Model Content

[0003] The purpose of this invention is to address the above-mentioned problems by providing a bottom cover opening device for a box opener, which solves the technical problems of low automation rate, low opening efficiency, and high labor intensity of manual opening of the top cover in traditional packaging boxes.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A bottom cover opening device for a carton opener includes a first frame, a set of oppositely arranged bottom cover opening structures, a first conveying positioner, and a first fixing device. The first frame is mounted on a conveying device. The first conveying positioner is installed on the conveying device or the first frame and can position the carton along the moving direction. The first fixing device can fix the position of the carton on the conveying device. The bottom cover opening structures can be used to open the bottom cover of the carton.

[0005] Furthermore, the lower cover opening structure includes a first movable seat, a first cutting edge structure, an upper cover pressing structure, a lower flip cover structure, and a downward push rod structure; the first movable seat is movably mounted on the first frame, the upper cover pressing structure is mounted on the first movable seat, and the upper cover pressing structure can abut against the upper cover of the packaging box on the same side; the first cutting edge structure is mounted on the first movable seat, and a set of first cutting blade assemblies that move in opposite directions are provided on the first cutting edge structure, and the first cutting blade assembly is provided with first cutting blades that can move up and down; the lower flip cover structure is provided with a first flipping plate assembly, and the first flipping plate assembly is provided with several controllable first suction cups; the downward push rod structure is mounted on the upper part of the first frame, and the downward push rod structure is provided with a downwardly extending push rod.

[0006] Furthermore, the lower part of the first movable seat is provided with a first slide rail, a first connecting plate and a first telescopic cylinder. The first movable seat is slidably mounted on the first frame via the first slide rail. One end of the first connecting plate is fixedly connected to the first frame. The first telescopic cylinder is fixedly connected to the first connecting plate. The telescopic end of the first telescopic cylinder is fixedly connected to the first frame. The first telescopic cylinder pushes the first movable seat to move toward the packaging box.

[0007] Furthermore, the first cutter assembly includes a first cutter seat, a second slide rail, a second telescopic cylinder, a first movable slide, and a first cutter. The first cutter seat is slidably mounted on the first movable seat via the second slide rail. The second telescopic cylinder is fixedly connected to the first movable seat, and the telescopic end of the second telescopic cylinder is connected to the first cutter seat. The second telescopic cylinder can push the first cutter seat to move horizontally and parallel. The first cutter is vertically mounted on the first cutter seat via the first movable slide.

[0008] Furthermore, the first cutter assembly also includes a first linkage rack structure, which includes a first rack seat, a first rotating tooth, and two first racks. The first rack seat is rotatably mounted on the first movable seat, and the first racks are slidably mounted on the first rack seat. The two first racks mesh in opposite directions with the first rotating tooth, and one of the first racks is fixedly connected to the telescopic end of the second telescopic cylinder.

[0009] Furthermore, the first flipping plate assembly includes a first vertical mounting plate, a third slide rail, a third telescopic cylinder, a first rotating shaft, a first flipping plate, and a fourth telescopic cylinder. The first vertical mounting plate is slidably mounted on the first movable seat along the third slide rail. The third telescopic cylinder is connected to the lower end of the first vertical mounting plate, and the telescopic end of the third telescopic cylinder is connected to the first movable seat. The first rotating shaft is rotatably mounted on one side of the first vertical mounting plate, the first flipping plate is fixed on the first rotating shaft, the fourth telescopic cylinder is hinged to the first vertical mounting plate, and the telescopic end of the fourth telescopic cylinder drives the first rotating shaft to rotate through a first connecting member, thereby causing the first flipping plate to flip. The first suction cup is mounted on the first flipping plate.

[0010] Furthermore, the first conveying positioner includes a first adapter plate, a second movable slide, and a first positioning plate. The first adapter plate is installed on one side of the upper part of the first frame, the second movable slide is installed on the first adapter plate, and the first positioning plate is installed on the second movable slide and can move downward.

[0011] Furthermore, the first fixing device includes a first bow-shaped component, a fifth telescopic cylinder, and a first fixing plate. The fifth telescopic cylinder is mounted on the top of the first frame via the first bow-shaped component, and the first fixing plate is mounted on the telescopic end of the fifth telescopic cylinder.

[0012] Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows: In use, this invention first transports a packaging box, whose sealing tape on the upper and lower covers has been horizontally cut open in the previous process of the production line, to the first frame of the lower cover opening device via a conveying device. The first conveying positioner secures the packaging box in place, followed by a first fixing device to prevent movement. Finally, the lower cover of the packaging box is opened via the lower cover opening structure. Based on the above, this invention can automatically open the lower cover at the two openings of the packaging box, solving the technical problems of low automation rate, low opening efficiency, and high labor intensity in the manual opening of traditional packaging boxes. Attached Figure Description

[0013] Figure 1 3D diagram of the lid-opening device for a carton opener; Figure 2 This is a three-dimensional drawing of the present invention; Figure 3 This is a first-view 3D view of the opening structure of the lower cover of this utility model; Figure 4 This is a second-view 3D view of the opening structure of the lower cover of this utility model; Figure 5 This is a third-person perspective 3D view of the opening structure of the lower cover of this utility model; Figure 6 3D diagram of the lid opening device for a case opener; Figure 7 A first-person 3D view of the top cover opening structure of the lid opening device for a case opener; Figure 8 A second-view 3D diagram of the top cover opening structure of the case opener's lid opening device; Figure 9 A third-person 3D view of the top cover opening structure of the case opener's lid opening device; In the attached diagram, 100 is the conveying device, 200 is the lower cover opening device, 300 is the upper cover opening device, 400 is the inner cover unscrewing device, and 500 is the packaging box. 21-First frame, 22-Lower cover opening structure, 23-First conveyor positioner, 24-First fixing device, 221-First moving seat, 222-First cutting edge structure, 223-Upper cover pressing structure, 224-Lower flip cover structure, 225-Downward push rod structure, 226-First suction cup, 2211-First slide rail, 2212-First connecting plate, 2213-First telescopic cylinder, 2221-First cutter holder, 2222-Second slide rail, 2223-Second telescopic cylinder, 2224-First moving slide, 2225-First cutter, 2 226-First toothed bracket, 2227-First rotating tooth, 2228-First toothed bracket, 2231-T-shaped frame, 2232-Top pressing component, 2241-First vertical mounting plate, 2242-Third slide rail, 2243-Third telescopic cylinder, 2244-First rotating shaft, 2245-First flap, 2246-Fourth telescopic cylinder, 2247-First connecting component, 231-First adapter plate, 232-Second moving slide, 233-First positioning plate, 241-First bow-shaped component, 242-Fifth telescopic cylinder, 243-First fixing plate; 31-Second frame, 32-Upper cover opening structure, 33-Second conveyor positioner, 34-Second fixing device, 321-Second moving seat, 322-Second cutting edge structure, 323-Upper flip cover structure, 324-Upward push rod structure, 325-Lower cover pressing structure, 326-Second suction cup, 3211-Fourth slide rail, 3212-Second connecting plate, 3213-Sixth telescopic cylinder, 3221-Second cutter holder, 3222-Fifth slide rail, 3223-Seventh telescopic cylinder, 3224-Third moving slide, 3225-Second cutter, 3226-Second toothed rack holder, 3227-Second rotary table Moving gear, 3228-Second rack, 3231-Second vertical mounting plate, 3232-Sixth slide rail, 3233-Eighth telescopic cylinder, 3234-Second rotating shaft, 3235-Second flap, 3236-Ninth telescopic cylinder, 3237-Second connecting piece, 3251-Lower mounting plate, 3252-Third rotating shaft, 3253-Eleventh telescopic cylinder, 3254-Third connecting piece, 3255-Pressing piece, 331-Second adapter plate, 332-Fourth moving slide, 333-Second positioning plate, 341-Second bow-shaped piece, 342-Tenth telescopic cylinder, 343-Second fixing plate. Detailed Implementation

[0014] The specific implementation of the utility model will be further described below with reference to the accompanying drawings.

[0015] In the description of this utility model, it should be understood that the terms "center", "length", "width", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0016] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0017] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0018] Please see Figure 1 A case opener includes a conveying device 100, a lower cover opening device 200, an upper cover opening device 300, and an inner cover unscrewing device 400. The conveying device 100 can convey a package 500 in one direction. The lower cover opening device 200, the upper cover opening device 300, and the inner cover unscrewing device 400 are all mounted on the conveying device 100. The inner cover unscrewing device 400 adopts a packaging box 500 inner cover unscrewing device 400 with patent number CN202421197509.5. In the latter, the gantry frame of the packaging box 500 inner cover unscrewing device 400 is integrated on the second frame 31 in the embodiment. The specific configuration of the inner cover unscrewing device 400 will not be described again in this application.

[0019] Please see Figure 2 The lower cover opening device 200 includes a first frame 21, a set of oppositely arranged lower cover opening structures 22, a first conveying positioner 23, and a first fixing device 24. The first frame 21 is mounted on the conveying device 100. The first conveying positioner is mounted on the conveying device 100 or the first frame 21 and can position the packaging box 500 along the moving direction. The first fixing device 24 can fix the position of the packaging box 500 on the conveying device 100. The lower cover opening structure 22 can be used to open the lower cover of the packaging box 500.

[0020] Please see Figures 2 to 5The lower cover opening structure 22 includes a first movable seat 221, a first cutting edge structure 222, an upper cover pressing structure 223, a lower flip cover structure 224, and a downward push rod structure 225. The first movable seat 221 is movably mounted on the first frame 21, and the upper cover pressing structure 223 is mounted on the first movable seat 221. The upper cover pressing structure 223 can abut against the upper cover of the packaging box 500 on the same side. The first cutting edge structure 222 is mounted on the first movable seat 221. A set of first cutting blade assemblies that move in opposite directions or back to back are provided on the first cutting blade assembly. The first cutting blade assembly is provided with a first cutting blade 2225 that can move up and down. The lower flip cover structure 224 is provided with a first flipping plate assembly. The first flipping plate assembly is provided with several controllable first suction cups 226. The downward push rod structure 225 is mounted on the upper part of the first frame 21. The downward push rod structure 225 is provided with a downwardly extending push rod. Specifically, the top cover pressing structure 223 includes a T-shaped frame 2231 and pressing members 2232. The vertical end of the T-shaped frame 2231 is mounted on the first movable seat 221, and each end of the pressing member 2232 is provided with a pressing member 2232. In use, the pressing members 2232 can compress the top cover, opening the horizontal slit of the packaging box 500, facilitating the insertion of the first cutter 2225.

[0021] In this embodiment, the lower part of the first movable seat 221 is provided with a first slide rail 2211, a first connecting plate 2212 and a first telescopic cylinder 2213. The first movable seat 221 is slidably mounted on the first frame 21 via the first slide rail 2211. One end of the first connecting plate 2212 is fixedly connected to the first frame 21. The first telescopic cylinder 2213 is fixedly connected to the first connecting plate 2212. The telescopic end of the first telescopic cylinder 2213 is fixedly connected to the first frame 21. The first telescopic cylinder 2213 pushes the first movable seat 221 to move toward the packaging box 500. Specifically, the first cutter assembly includes a first cutter 2225 base 2221, a second slide rail 2222, a second telescopic cylinder 2223, a first movable slide 2224, and a first cutter 2225. The first cutter 2225 base 2221 is slidably mounted on the first movable base 221 via the second slide rail 2222. The second telescopic cylinder 2223 is fixedly connected to the first movable base 221. The telescopic end of the second telescopic cylinder 2223 is connected to the first cutter 2225 base 2221. The second telescopic cylinder 2223 can push the first cutter 2225 base 2221 to move horizontally and parallel. The first cutter 2225 is vertically mounted on the first cutter 2225 base 2221 via the first movable slide 2224.

[0022] In this embodiment, the first cutter assembly further includes a first linkage rack structure, which includes a first rack seat 2226, a first rotating tooth 2227, and two first racks 2228. The first rack seat 2226 is rotatably mounted on the first movable seat 221, and the first racks 2228 are slidably mounted on the first rack seat 2226. The two first racks 2228 mesh with the first rotating tooth 2227 in opposite directions, and one first rack 2228 is fixedly connected to the telescopic end of the second telescopic cylinder 2223.

[0023] In this embodiment, the first flipping plate assembly includes a first vertical mounting plate 2241, a third slide rail 2242, a third telescopic cylinder 2243, a first rotating shaft 2244, a first flipping plate 2245, and a fourth telescopic cylinder 2246. The first vertical mounting plate 2241 is vertically slidably mounted on the first movable seat 221 via the third slide rail 2242. The third telescopic cylinder 2243 is connected to the lower end of the first vertical mounting plate 2241, and the telescopic end of the third telescopic cylinder 2243 is connected to the first movable seat 221. The first rotating shaft 2244 is rotatably mounted on one side of the first vertical mounting plate 2241. The first flipping plate 2245 is fixed on the first rotating shaft 2244. The fourth telescopic cylinder 2246 is hinged to the first vertical mounting plate 2241. The telescopic end of the fourth telescopic cylinder 2246 drives the first rotating shaft 2244 to rotate via the first connecting member 2247, thereby causing the first flipping plate 2245 to flip. The first suction cup 226 is mounted on the first flipping plate 2245.

[0024] In this embodiment, the first conveying positioner 23 includes a first adapter plate 231, a second movable slide 232 and a first positioning plate 233. The first adapter plate 231 is installed on one side of the upper part of the first frame 21, the second movable slide 232 is installed on the first adapter plate 231, and the first positioning plate 233 is installed on the second movable slide 232 and can move downward.

[0025] In this embodiment, the first fixing device 24 includes a first bow-shaped member 241, a fifth telescopic cylinder 242, and a first fixing plate 243. The fifth telescopic cylinder 242 is mounted on the top of the first frame 21 via the first bow-shaped member 241, and the first fixing plate 243 is mounted on the telescopic end of the fifth telescopic cylinder 242. Please see Figure 6 The top cover opening device 300 includes a second frame 31, a set of oppositely arranged top cover opening structures 32, a second conveying positioner 33, and a second fixing device 34. The second frame 31 is mounted on the conveying device 100. The second conveying positioner is mounted on the conveying device 100 or the second frame 31 and can position the packaging box 500 along the moving direction. The second fixing device 34 can fix the position of the packaging box 500 on the conveying device 100. The top cover opening structure 32 can be used to open the top cover of the packaging box 500. The inner cover unscrewing device 400 is mounted on the second frame 31 and can be used to open the inner cover of the packaging box 500.

[0026] Please see Figures 6 to 9 The upper cover opening structure 32 includes a second movable seat 321, a second cutting edge structure 322, an upper flip cover structure 323, an upward push rod structure 324, and a lower cover pressing structure 325. The second movable seat 321 is movably mounted on the second frame 31. The second cutting edge structure 322 is mounted on the second movable seat 321. The second cutting edge structure 322 is provided with a set of second cutting blade assemblies that move in opposite directions or back to back. The second cutting blade assembly is provided with a second cutting blade 3225 that can move up and down. The upper flip cover structure 323 is provided with a second flipping plate assembly. The second flipping plate assembly is provided with several controllable second suction cups 326. The upward push rod structure 324 is mounted on the upper part of the second frame 31. The upward push rod structure 324 is provided with an upwardly extending push rod. The lower cover pressing structure 325 is mounted on the second frame 31 and can press down the lower cover that has been opened on the same side.

[0027] In this embodiment, the lower part of the second movable seat 321 is provided with a fourth slide rail 3211, a second connecting plate 3212 and a sixth telescopic cylinder 3213. The second movable seat 321 is slidably mounted on the second frame 31 via the fourth slide rail 3211. One end of the second connecting plate 3212 is fixedly connected to the second frame 31. The sixth telescopic cylinder 3213 is fixedly connected to the second connecting plate 3212. The telescopic end of the sixth telescopic cylinder 3213 is fixedly connected to the second frame 31. The sixth telescopic cylinder 3213 pushes the second movable seat 321 to move towards the packaging box 500.

[0028] In this embodiment, the second cutter assembly includes a second cutter 3225 base 3221, a fifth slide rail 3222, a seventh telescopic cylinder 3223, a third movable slide 3224, and a second cutter 3225. The second cutter 3225 base 3221 is slidably mounted on the second movable base 321 via the fifth slide rail 3222. The seventh telescopic cylinder 3223 is fixedly connected to the second movable base 321, and the telescopic end of the seventh telescopic cylinder 3223 is connected to the second cutter 3225 base 3221. The seventh telescopic cylinder 3223 can push the second cutter 3225 base 3221 to move horizontally and parallel. The second cutter 3225 is vertically mounted on the second cutter 3225 base 3221 via the third movable slide 3224. Specifically, the second cutter assembly also includes a second linkage rack structure, which includes a second rack seat 3226, a second rotating tooth 3227, and two second racks 3228. The second rack seat 3226 is rotatably mounted on the second movable seat 321, and the second racks 3228 are slidably mounted on the second rack seat 3226. The two second racks 3228 mesh with the second rotating tooth 3227 in opposite directions, and one second rack 3228 is fixedly connected to the telescopic end of the seventh telescopic cylinder 3223.

[0029] In this embodiment, the second flip plate assembly includes a second vertical mounting plate 3231, a sixth slide rail 3232, an eighth telescopic cylinder 3233, a second rotating shaft 3234, a second flip plate 3235, and a ninth telescopic cylinder 3236. The second vertical mounting plate 3231 is vertically slidably mounted on the second movable seat 321 via the sixth slide rail 3232. The eighth telescopic cylinder 3233 is connected to the lower end of the second vertical mounting plate 3231, and the telescopic end of the eighth telescopic cylinder 3233 is connected to the second movable seat 321. The second rotating shaft 3234 is rotatably mounted on one side of the second vertical mounting plate 3231. The second flip plate 3235 is fixed on the second rotating shaft 3234. The ninth telescopic cylinder 3236 is hinged to the second vertical mounting plate 3231. The telescopic end of the ninth telescopic cylinder 3236 drives the second rotating shaft 3234 to rotate via the second connector 3237, thereby causing the second flip plate 3235 to flip. The second suction cup 326 is mounted on the second flip plate 3235.

[0030] In this embodiment, the second conveying positioner 33 includes a second adapter plate 331, a fourth movable slide 332, and a second positioning plate 333. The second adapter plate 331 is installed on one side of the upper part of the second frame 31, the fourth movable slide 332 is installed on the second adapter plate 331, and the second positioning plate 333 is installed on the fourth movable slide 332 and can move downward.

[0031] In this embodiment, the second fixture 34 includes a second bow-shaped member 341, a tenth telescopic cylinder 342, and a second fixing plate 343. The tenth telescopic cylinder 342 is mounted on the top of the second frame 31 via the second bow-shaped member 341, and the second fixing plate 343 is mounted on the telescopic end of the tenth telescopic cylinder 342.

[0032] In this embodiment, the lower cover pressing structure 325 includes a lower mounting plate 3251, a third rotating shaft 3252, an eleventh telescopic cylinder 3253, a third connecting member 3254, and a pressing member 3255. The lower mounting plate 3251 is fixedly connected to the lower part of the second frame 31. The third rotating shaft 3252 is rotatably mounted on the lower part of the second frame 31. The eleventh telescopic cylinder 3253 is hinged to the lower mounting plate 3251. The telescopic end of the eleventh telescopic cylinder 3253 is connected to the third rotating shaft 3252 through the third connecting member 3254. Both ends of the eleventh telescopic cylinder 3253 are mounted on the pressing member 3255. The telescopic end of the eleventh telescopic cylinder 3253 can drive the third rotating shaft 3252 to rotate through the third connecting member 3254.

[0033] The specific steps for this application are as follows: 1. First, the packaging box 500, whose sealing tape of the upper and lower cover has been horizontally cut in the previous process of the production line, is transported by the conveying device 100 to the first frame 21 of the lower cover opening device 200. The packaging box 500 is fixed in place by the first conveying positioner 23. Then, the packaging box 500 is fixed by the first fixing device 24 to prevent movement. Finally, the lower cover of the packaging box 500 is opened by the lower cover opening structure 22.

[0034] The opening action of the lower cover is as follows: The first movable seat 221 is pushed towards the packaging box 500, and the top pressing member 2232 presses the upper cover, so that the horizontal cut of the packaging box 500 is opened; the two first cutters 2225 are inserted and move downward. After the two first cutters 2225 are inserted into the horizontal cut, they move in opposite directions and cut the tape at both ends of the lower cover; then the first suction cup 226 is moved upward by the first flipping plate assembly and flipped to be sucked on the outside of the lower cover. After the lower cover is flipped open, the suction of the first suction cup 226 is released, and the first flipping plate assembly moves away from the first suction cup 226; the downward push rod structure 225 moves downward and pushes against the inside of the lower cover, so that the lower cover is fully opened.

[0035] 2. The packaging box 500 is conveyed to the second frame 31 of the top cover opening device 300 by the conveying device 100. The packaging box 500 is fixed in place by the second conveying positioner 33. Then the packaging box 500 is fixed by the second fixing device 34 to prevent movement. Finally, the bottom cover of the packaging box 500 is opened by the top cover opening structure 32.

[0036] The opening action of the top cover is as follows: The second movable seat 321 is pushed towards the packaging box 500, and the two second cutters 3225 are inserted and moved upward. After the two second cutters 3225 are inserted into the horizontal cut, they move in opposite directions to cut the tape at both ends of the top cover. Then, the second suction cup 326 is moved down by the second flipping plate assembly and flipped to be attracted to the outside of the top cover. After flipping open the top cover, the suction cup 326 is released, and the second flipping plate assembly moves away from the second suction cup 326. At this time, the lower cover pressing structure 325 is activated, so that the lower cover is fully opened without affecting the lower push rod structure 324. The upper push rod structure 324 moves upward and pushes against the inside of the top cover, so that the top cover is fully opened.

[0037] 3. Finally, the inner cover of the packaging box 500 is opened by the inner cover unscrewing device 400, which realizes the automatic opening of the bottom cover, top cover and inner cover of the packaging box 500, which is convenient for the next process.

[0038] The above description is a detailed description of the preferred embodiments of the present utility model. However, the embodiments are not intended to limit the scope of the patent application of the present utility model. All equivalent changes or modifications made under the technical spirit of the present utility model should fall within the patent scope covered by the present utility model.

Claims

1. A lower cover opening apparatus for a case unpacking machine, characterized by: The device includes a first frame, a set of oppositely arranged lower cover opening structures, a first conveying positioner, and a first fixing device. The first frame is mounted on a conveying device. The first conveying positioner is installed on the conveying device or the first frame and can position the packaging box along the moving direction. The first fixing device can fix the position of the packaging box on the conveying device. The lower cover opening structures can be used to open the lower cover of the packaging box.

2. A lower cover opening apparatus for a case unpacking machine according to claim 1, characterized by: The lower cover opening structure includes a first movable seat, a first cutting edge structure, an upper cover pressing structure, a lower flip cover structure, and a downward push rod structure. The first movable seat is movably mounted on the first frame. The upper cover pressing structure is mounted on the first movable seat and can abut against the upper cover of the packaging box on the same side. The first cutting edge structure is mounted on the first movable seat and is provided with a set of first cutting blade assemblies that move in opposite directions or back to back. The first cutting blade assembly is provided with first cutting blades that can move up and down. The lower flip cover structure is provided with a first flipping plate assembly and is provided with several controllable first suction cups. The downward push rod structure is mounted on the upper part of the first frame and is provided with a downwardly extending push rod.

3. A lower cover opening apparatus for a case unpacker according to claim 2, characterized by: The lower part of the first movable seat is provided with a first slide rail, a first connecting plate and a first telescopic cylinder. The first movable seat is slidably mounted on the first frame via the first slide rail. One end of the first connecting plate is fixedly connected to the first frame. The first telescopic cylinder is fixedly connected to the first connecting plate. The telescopic end of the first telescopic cylinder is fixedly connected to the first frame. The first telescopic cylinder pushes the first movable seat to move toward the packaging box.

4. The lower cover opening apparatus for a case unpacker according to claim 2, characterized by: The first cutter assembly includes a first cutter seat, a second slide rail, a second telescopic cylinder, a first movable slide, and a first cutter. The first cutter seat is slidably mounted on the first movable seat via the second slide rail. The second telescopic cylinder is fixedly connected to the first movable seat, and the telescopic end of the second telescopic cylinder is connected to the first cutter seat. The second telescopic cylinder can push the first cutter seat to move horizontally and parallel. The first cutter is vertically mounted on the first cutter seat via the first movable slide.

5. A lower cover opening apparatus for a case unpacker according to claim 4, characterized by: The first cutter assembly further includes a first linkage rack structure, which includes a first rack seat, a first rotating tooth, and two first racks. The first rack seat is rotatably mounted on the first movable seat, and the first racks are slidably mounted on the first rack seat. The two first racks mesh in opposite directions with the first rotating tooth, and one of the first racks is fixedly connected to the telescopic end of the second telescopic cylinder.

6. The lower cover opening apparatus for a case unpacker according to claim 2, characterized by: The first flipping plate assembly includes a first vertical mounting plate, a third slide rail, a third telescopic cylinder, a first rotating shaft, a first flip plate, and a fourth telescopic cylinder. The first vertical mounting plate is slidably mounted on the first movable seat along the third slide rail. The third telescopic cylinder is connected to the lower end of the first vertical mounting plate, and the telescopic end of the third telescopic cylinder is connected to the first movable seat. The first rotating shaft is rotatably mounted on one side of the first vertical mounting plate. The first flip plate is fixed on the first rotating shaft. The fourth telescopic cylinder is hinged to the first vertical mounting plate. The telescopic end of the fourth telescopic cylinder drives the first rotating shaft to rotate through a first connecting member, thereby causing the first flip plate to flip. The first suction cup is mounted on the first flip plate.

7. The lower cover opening apparatus for a case unpacker according to claim 1, characterized by: The first conveying positioner includes a first adapter plate, a second movable slide, and a first positioning plate. The first adapter plate is installed on one side of the upper part of the first frame, the second movable slide is installed on the first adapter plate, and the first positioning plate is installed on the second movable slide and can move downward.

8. The lower cover opening apparatus for a case unpacker according to claim 1, characterized by: The first fixing device includes a first bow-shaped component, a fifth telescopic cylinder, and a first fixing plate. The fifth telescopic cylinder is mounted on the top of the first frame through the first bow-shaped component, and the first fixing plate is mounted on the telescopic end of the fifth telescopic cylinder.

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