Automatic plastic packaging machine

Abstract

The invention discloses an automatic plastic packaging machine, which belongs to the technical field of plastic packaging equipment, and comprises a base station, a plastic packaging bag opening mechanism, a packaging box bagging mechanism, a heat sealing mechanism and a thermoplastic smoothing assembly, a plurality of fixed support frames are fixedly mounted on the base station; a plastic package bag opening mechanism, a packaging box bagging mechanism and a heat sealing mechanism are installed on the fixed supporting frame. The heat sealing mechanism comprises a heat sealing table, a shifting assembly, a sealing assembly and a corner cutting assembly, the heat sealing table is fixedly installed on the fixed supporting frame, and a material blocking structure is installed on the sealing assembly; a shifting assembly used for shifting the packaging boxes loaded into the plastic packaging bags on the heat sealing table is installed on the fixed supporting frame. A sealing assembly used for sealing a plastic package bag is installed on the fixed supporting frame. The fixed supporting frame is provided with a corner cutting assembly used for cutting off corners of a plastic package bag. A thermoplastic smoothing assembly used for enabling a plastic packaging bag on the outer side of the packaging box to shrink after being heated is installed on the base station. In this way, automatic plastic packaging is achieved, and the thermoplastic effect is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic sealing equipment, in particular to an automatic plastic sealing machine. Background Art

[0002] After the product is packaged in a box, in order to further provide reliable protection for the product and the box, the box is usually sealed in plastic; this creates a sealed environment in the box, effectively preventing external factors such as dust, moisture, water, and oxygen from eroding the product.

[0003] For example, Chinese patent CN115140357A discloses an automatic laminating machine for packaging cigarette boxes. When the laminating machine is working, the cigarette boxes are placed in the material bin, the laminating film is transported, the cigarette boxes push the laminating film to wrap themselves, the clamping mechanism rotates, and the first edge sealing mechanism heat seals the overlapping parts; then the sliding mechanism rotates the cigarette boxes, folds the edges of the laminating film, and the second edge sealing mechanism heat seals the edges.

[0004] However, when the packaging box is plastic-sealed, it is difficult for the outer plastic-sealing bag to completely fit the packaging box, so that the outer plastic-sealing film is relatively uneven after thermoforming.

[0005] Based on this, the present invention designs an automatic laminating machine to solve the above problems. Summary of the Invention

[0006] In view of the above-mentioned shortcomings of the prior art, the present invention provides an automatic laminator.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] An automatic laminating machine comprises a base and a laminating bag opening mechanism, a packaging box bagging mechanism, a heat sealing mechanism and a thermoplastic smoothing component;

[0009] A plurality of fixed support frames are fixedly mounted on the base; a plastic bag opening mechanism, a packaging box bagging mechanism and a heat sealing mechanism are mounted on the fixed support frames; the packaging box bagging mechanism, the plastic bag opening mechanism and the heat sealing mechanism are arranged in sequence from left to right;

[0010] The heat sealing mechanism includes a heat sealing table, a shifting assembly, a sealing assembly and a corner cutting assembly. The heat sealing table is fixedly mounted on a fixed support frame, and a material blocking structure is mounted on the sealing assembly. The fixed support frame is mounted with a shifting assembly for shifting the packaging box placed in the plastic-sealed bag on the heat sealing table. The fixed support frame is mounted with a sealing assembly for sealing the plastic-sealed bag. The fixed support frame is mounted with a corner cutting assembly for cutting off the edges and corners of the plastic-sealed bag.

[0011] A thermoplastic smoothing component for shrinking the plastic bag on the outside of the packaging box when heated is installed on the base.

[0012] Furthermore, the plastic bag opening mechanism includes a material storage table, a material transfer cylinder linear module, an upper bag opening cylinder, an upper rectangular plate, a lower rectangular plate and a suction cup. The material storage table is fixedly mounted on a fixed support frame, on which the material transfer cylinder linear module is fixedly mounted, the movable end of the material transfer cylinder linear module is fixedly mounted with the upper bag opening cylinder, and the output end of the upper bag opening cylinder is fixedly mounted with the upper rectangular plate; the lower rectangular plate is fixedly mounted on the fixed support frame, and the lower rectangular plate is located on the lower side of the upper rectangular plate; and multiple suction cups are fixedly mounted in a rectangular array on both the upper rectangular plate and the lower rectangular plate.

[0013] Furthermore, the packaging box bagging mechanism includes a loading assembly and a multi-stroke material moving assembly, and the loading assembly and the multi-stroke material moving assembly for conveying the packaging boxes are installed on the fixed support frame.

[0014] Furthermore, the loading assembly includes a belt conveyor, a feeding cylinder linear module, a feeding cylinder and a feeding push plate. The belt conveyor is fixedly installed on a fixed support frame, and the feeding cylinder linear module is fixedly installed on a fixed support frame; the moving end of the feeding cylinder linear module is fixedly installed with the feeding cylinder, and the output end of the feeding cylinder is fixedly installed with the feeding push plate.

[0015] Furthermore, the multi-stroke material transfer assembly includes a multi-stroke cylinder, a box loading guide rail, a transfer mounting plate and an L-shaped feed plate. The multi-stroke cylinder is fixedly mounted on a fixed support frame, the box loading guide rail is fixedly mounted on a fixed support frame, the transfer mounting plate is limitedly and slidably connected to the box loading guide rail, and the output end of the multi-stroke cylinder is fixedly connected to the transfer mounting plate; an L-shaped feed plate for supporting packaging boxes is fixedly mounted on the transfer mounting plate.

[0016] Furthermore, the shifting assembly includes a shifting cylinder linear module, a yielding cylinder, a movable mounting frame and a shifting push plate, and yielding grooves are symmetrically provided on the heat sealing table; the shifting cylinder linear module is fixedly installed on the fixed support frame, the movable end of the shifting cylinder linear module is fixedly installed with the yielding cylinder, the output end of the yielding cylinder is fixedly installed with the movable mounting frame, and two groups of shifting push plates passing through the yielding grooves are symmetrically fixedly installed on the movable mounting frame; one group of shifting push plates is used to push the packaging boxes packed in plastic bags from one end of the heat sealing table to the other end; the other group of shifting push plates is used to push the packaging boxes packed in plastic bags from the other end of the heat sealing table into the thermoplastic smoothing assembly.

[0017] Further, the sealing assembly includes a fixed mounting frame and two heat-sealing modules. The fixed mounting frame is fixedly installed on the fixed support frame. One set of heat-sealing modules is installed on the fixed mounting frame, and the other set of heat-sealing modules is installed on the fixed support frame. The two heat-sealing modules are symmetrically arranged up and down. The heat-sealing module includes a sealing cylinder, a heat-insulating plate, and a sealing heat-sealing strip. One sealing cylinder is fixedly installed on the fixed mounting frame, and the other sealing cylinder is fixedly installed on the fixed support frame. The movable end of the sealing cylinder is fixedly installed with a heat-insulating plate, and the sealing heat-sealing strip is fixedly installed on the heat-insulating plate.

[0018] Further, the thermoplastic smoothing assembly includes a thermoplastic support frame, a rotating motor, a rotating frame, a feeding inclined table, a fixed smoothing plate, and a blanking table. The thermoplastic support frame is fixedly installed on the base. The rotating motor is fixedly installed on the thermoplastic support frame. The thermoplastic support frame is fixedly installed with a support shaft, and the rotating frame is rotatably installed on the support shaft on the thermoplastic support frame. The output end of the rotating motor is fixedly connected to the rotating frame. The support seat on the thermoplastic support frame passes through the middle of the rotating frame and is fixedly installed with a fixed smoothing plate. The rotating frame is symmetrically provided with thermoplastic grooves. On the outer side of the thermoplastic groove, a feeding inclined table is fixedly installed. The blanking table is fixedly installed on the base. A heater is fixedly installed on the rotating frame, and the heater is electrically connected to an external power supply through a conductive slip ring. The inner wall of the thermoplastic groove and the surface of the feeding inclined table form a heat-conducting panel of the electric heating plate.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: The plastic-sealed bag opening mechanism opens the plastic-sealed bag, and the feeding assembly transports the packaging box onto the multi-stroke material transfer assembly. The packaging box on the multi-stroke material transfer assembly is aligned with the opened plastic-sealed bag. Then, the multi-stroke material transfer assembly drives the packaging box to move, so that the packaging box is loaded into the plastic-sealed bag opened by the plastic-sealed bag opening mechanism. Then, the multi-stroke material transfer assembly continues to drive the packaging box loaded into the plastic-sealed bag to move to one end of the heat-sealing table. The baffle structure on the heat-sealing table blocks the packaging box and the plastic-sealed bag. Then, the multi-stroke material transfer assembly resets, so that the packaging box loaded into the plastic-sealed bag remains on the heat-sealing table. At one end of the heat-sealing table, the sealing assembly seals the end of the plastic-sealed bag containing the packaging box. After the packaging box is loaded into the plastic-sealed bag, there are parts of the four corners of the plastic-sealed bag that do not fit the packaging box. Then, the displacement assembly drives the plastic-sealed bag and the packaging box that have been sealed to move to the other end of the heat-sealing table. At the other end of the heat-sealing table, the corner-cutting assembly cuts off the parts of the four corners of the plastic-sealed bag that do not fit the packaging box, making the fit between the plastic-sealed bag and the packaging box more regular. Then, the displacement assembly drives the plastic-sealed bag and the packaging box that have been corner-cut to move into the thermoplastic smoothing assembly. The thermoplastic smoothing assembly heats the plastic-sealed bag outside the packaging box to make the plastic-sealed bag shrink when heated. At the same time, the setting of the thermoplastic smoothing assembly makes the surface of the plastic-sealed bag smoother during the shrinking process. Thus, the thermoplastic effect of the packaging box is guaranteed. Description of the Drawings

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 is a three-dimensional view of an automatic plastic sealing machine of the present invention Figure 1 ;

[0022] Figure 2 is a front view of an automatic plastic sealing machine of the present invention;

[0023] Figure 3 is a three-dimensional view of an automatic plastic sealing machine of the present invention Figure 2 ;

[0024] Figure 4 is a three-dimensional view of an automatic plastic sealing machine of the present invention Figure 3 ;

[0025] Figure 5 is a three-dimensional view of an automatic plastic sealing machine of the present invention Figure 4 ;

[0026] Figure 6 is Figure 5 an enlarged view of part A in

[0027] Figure 7 a schematic diagram of the displacement push plate and its connection structure.

[0028] The reference numerals in the figure respectively represent:

[0029] 1. Base; 11. Fixed support frame; 2. Plastic bag opening mechanism; 21. Material storage table; 22. Material transfer cylinder linear module; 23. Upper bag opening cylinder; 24. Upper rectangular plate; 25. Lower rectangular plate; 26. Suction cup; 3. Packing box bagging mechanism; 31. Loading assembly; 311. Belt conveyor; 312. Material feeding cylinder linear module; 313. Material feeding cylinder; 314. Material feeding push plate; 32. Multi-stroke material transfer assembly; 321. Multi-stroke cylinder; 322. Cartoning guide rail; 323. Transfer mounting plate; 324. L-shaped feeding plate; 4. Heat sealing mechanism; 41. Heat sealing table; 411. Material blocking cylinder; 412. Blocking rod; 42 , shifting assembly; 421, giving way groove; 422, shifting cylinder linear module; 423, giving way cylinder; 424, moving mounting frame; 425, shifting push plate; 43, sealing assembly; 431, fixed mounting frame; 432, sealing cylinder; 433, heat insulation board; 434, sealing heat seal strip; 44, cutting angle assembly; 441, vertical cylinder linear module; 442, pneumatic gripper; 443, cutting angle heat seal strip; 5, thermoplastic smoothing assembly; 51, thermoplastic support frame; 52, rotating motor; 53, rotating frame; 54, thermoplastic groove; 55, material guide ramp; 56, fixed smoothing plate; 57, blanking table; 6, packaging box; 7, plastic bag. DETAILED DESCRIPTION

[0030] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0031] The terms “left,” “right,” “front,” “back,” “up,” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0032] Example 1: In some embodiments, please refer to the accompanying drawings of the specification. Figures 1-3 , an automatic laminating machine, comprising a base 1 and a laminating bag opening mechanism 2, further comprising a packaging box bagging mechanism 3, a heat sealing mechanism 4 and a thermoplastic smoothing component 5;

[0033] A plurality of fixed support frames 11 are fixedly mounted on the base 1; a plastic bag opening mechanism 2, a packaging box bagging mechanism 3 and a heat sealing mechanism 4 are mounted on the fixed support frames 11; the packaging box bagging mechanism 3, the plastic bag opening mechanism 2 and the heat sealing mechanism 4 are arranged in sequence from left to right;

[0034] like Figure 2 and Figure 3As shown, the heat-sealing mechanism 4 includes a heat-sealing table 41, a shifting component 42, a sealing component 43, and a corner-cutting component 44. The heat-sealing table 41 is fixedly installed on the fixed support frame 11, and a material-blocking structure is installed on the sealing component 43; a shifting component 42 for shifting the packaging box 6 loaded onto the heat-sealing table 41 into the plastic-sealing bag 7 is installed on the fixed support frame 11; a sealing component 43 for sealing the plastic-sealing bag 7 is installed on the fixed support frame 11; a corner-cutting component 44 for cutting off the corners of the plastic-sealing bag 7 is installed on the fixed support frame 11;

[0035] A heat-sealing and flattening component 5 for heat-shrinking the plastic-sealing bag 7 outside the packaging box 6 is installed on the base 1.

[0036] In this embodiment, when the automatic plastic-sealing machine is working normally, the plastic-sealing bag 7 is opened by the plastic-sealing bag opening mechanism 2, and the packaging box 6 is conveyed to the multi-stroke material-transferring component 32 by the feeding component 31; the packaging box 6 on the multi-stroke material-transferring component 32 is aligned with the opened plastic-sealing bag 7; then the multi-stroke material-transferring component 32 drives the packaging box 6 to move, so that the packaging box 6 is loaded into the plastic-sealing bag 7 opened by the plastic-sealing bag opening mechanism 2. Then the multi-stroke material-transferring component 32 continues to drive the packaging box 6 loaded into the plastic-sealing bag 7 to move to one end of the heat-sealing table 41. The packaging box 6 and the plastic-sealing bag 7 are blocked by the material-blocking structure on the heat-sealing table 41. Then the multi-stroke material-transferring component 32 resets, so that the packaging box 6 loaded into the plastic-sealing bag 7 remains on the heat-sealing table 41; at one end of the heat-sealing table 41, the sealing component 43 seals the end of the plastic-sealing bag 7 containing the packaging box 6; after the plastic-sealing bag 7 is loaded with the packaging box 6, there are parts of the four corners of the plastic-sealing bag 7 that do not fit the packaging box 6; then the shifting component 42 drives the plastic-sealing bag 7 and the packaging box 6 that have been sealed to move to the other end of the heat-sealing table 41; at the other end of the heat-sealing table 41, the corner-cutting component 44 cuts off the parts of the four corners of the plastic-sealing bag 7 that do not fit the packaging box 6, so that the fit between the plastic-sealing bag 7 and the packaging box 6 is more regular; then the shifting component 42 drives the plastic-sealing bag 7 and the packaging box 6 that have been corner-cut to move into the heat-sealing and flattening component 5. The heat-sealing and flattening component 5 heats the plastic-sealing bag 7 outside the packaging box 6 to make the plastic-sealing bag 7 heat-shrink. At the same time, the setting of the heat-sealing and flattening component 5 makes the surface of the plastic-sealing bag 7 smoother during the shrinking process; thus ensuring the heat-sealing effect of the packaging box 6.

[0037] Embodiment 2: In some embodiments, as a preferred embodiment of the present invention, as Figure 4As shown, the plastic bag opening mechanism 2 includes a storage table 21, a material transfer cylinder linear module 22, an upper bag opening cylinder 23, an upper rectangular plate 24, a lower rectangular plate 25, and suction cups 26. The storage table 21 is fixedly installed on the fixed support frame 11. A material transfer cylinder linear module 22 is fixedly installed on the fixed support frame 11. The moving end of the material transfer cylinder linear module 22 is fixedly installed with an upper bag opening cylinder 23, and the output end of the upper bag opening cylinder 23 is fixedly installed with an upper rectangular plate 24. The lower rectangular plate 25 is fixedly installed on the fixed support frame 11, and the lower rectangular plate 25 is located below the upper rectangular plate 24. A plurality of suction cups 26 are fixedly installed on both the upper rectangular plate 24 and the lower rectangular plate 25 in a rectangular array.

[0038] As Figure 2 and Figure 4 shown, the packaging box bagging mechanism 3 includes a feeding component 31 and a multi-trip material transfer component 32. A feeding component 31 and a multi-trip material transfer component 32 for conveying the packaging box 6 are installed on the fixed support frame 11.

[0039] The feeding component 31 includes a belt conveyor 311, a feeding cylinder linear module 312, a feeding cylinder 313, and a feeding push plate 314. The belt conveyor 311 is fixedly installed on the fixed support frame 11, and the feeding cylinder linear module 312 is fixedly installed on the fixed support frame 11. The moving end of the feeding cylinder linear module 312 is fixedly installed with a feeding cylinder 313, and the output end of the feeding cylinder 313 is fixedly installed with a feeding push plate 314.

[0040] The multi-trip material transfer component 32 includes a multi-trip cylinder 321, a box loading guide rail 322, a transfer mounting plate 323, and an L-shaped feeding plate 324. The multi-trip cylinder 321 is fixedly installed on the fixed support frame 11, the box loading guide rail 322 is fixedly installed on the fixed support frame 11, the transfer mounting plate 323 is in limit sliding connection with the box loading guide rail 322, and the output end of the multi-trip cylinder 321 is fixedly connected to the transfer mounting plate 323. An L-shaped feeding plate 324 for supporting the packaging box 6 is fixedly installed on the transfer mounting plate 323.

[0041] In this embodiment, when the plastic bag opening mechanism 2 and the packaging box bagging mechanism 3 are working properly, a plurality of plastic bags 7 are placed on the storage table 21; the transfer cylinder linear module 22 drives the upper bag opening cylinder 23, the upper rectangular plate 24 and the suction cups 26 on the upper rectangular plate 24 to move to the upper side of the storage table 21, and the upper bag opening cylinder 23 drives the upper rectangular plate 24 and the suction cups 26 to move vertically downward, and the plastic bag 7 is adsorbed by the suction cups 26 on the upper rectangular plate 24; the upper bag opening cylinder 23 drives the upper rectangular plate 24 and the suction cups 26 to reset to complete the material taking; the transfer cylinder linear module 22 drives the upper bag opening cylinder 23, the upper rectangular plate 24, the suction cups 26 and the plastic bag 7 to move to a position aligned with the lower rectangular plate 25; the upper bag opening cylinder 23 drives the upper rectangular plate 24, the suction cups 26 and the plastic bag 7 to move vertically downward until the plastic bag 7 contacts the suction cups 26 on the lower rectangular plate 25, and the suction cups 26 on the lower rectangular plate 25 adsorb the lower side of the plastic bag 7; the suction cups 26 on the upper rectangular plate 24 adsorb the upper side of the plastic bag 7, and then the upper bag opening cylinder 23 drives the upper rectangular plate 24 and the suction cups 26 to move vertically upward, thereby realizing the opening of the plastic bag 7.

[0042] The belt conveyor 311 drives the packaging box 6 to move, the feeding cylinder linear module 312 drives the feeding cylinder 313 and the feeding push plate 314 to move, and then the feeding cylinder 313 drives the feeding push plate 314 to move vertically downward so that the feeding push plate 314 is inserted between two packaging boxes 6; the feeding cylinder linear module 312 drives the feeding cylinder 313 and the feeding push plate 314 to move horizontally, thereby pushing the packaging box 6 on the belt conveyor 311 to the L-shaped feeding plate 324 through the feeding push plate 314; the L-shaped feeding plate 324 supports and positions the packaging box 6; then the multi-stroke cylinder 321 drives the transfer mounting plate 323 and the L-shaped feeding plate 324 to move, and the transfer mounting plate 323 and the L-shaped feeding plate 324 move horizontally under the limiting action of the loading box guide rail 322, thereby inserting the packaging box 6 on the L-shaped feeding plate 324 into the plastic bag 7 opened by the upper rectangular plate 24 and the lower rectangular plate 25 for the packaging box 6, so that the packaging box 6 is loaded into the plastic bag 7; at this time, the suction cups 26 no longer adsorb the plastic bag 7; the multi-stroke cylinder 321 continues to drive the packaging box 6 to move through the transfer mounting plate 323 and the L-shaped feeding plate 324, thereby driving the packaging box 6 and the plastic bag 7 to move to the heat sealing table 41; the packaging box 6 and the plastic bag 7 are blocked by the blocking structure on the sealing assembly 43; then the multi-stroke cylinder 321 drives the transfer mounting plate 323 and the L-shaped feeding plate 324 to reset.

[0043] Embodiment 3: In some embodiments, as a preferred embodiment of the present invention, such as Figures 5-7As shown, the shift assembly 42 includes a shift cylinder linear module 422, a yield cylinder 423, a movable mounting frame 424 and a shift push plate 425, and the heat sealing table 41 is symmetrically provided with yield grooves 421; the shift cylinder linear module 422 is fixedly mounted on the fixed support frame 11, and the movable end of the shift cylinder linear module 422 is fixedly mounted with the yield cylinder 423, and the output end of the yield cylinder 423 is fixedly mounted with the movable mounting frame 424, and two groups of shift push plates 425 passing through the yield grooves 421 are symmetrically fixedly mounted on the movable mounting frame 424; one group of shift push plates 425 is used to push the packaging box 6 loaded in the plastic-sealed bag 7 from one end of the heat sealing table 41 to the other end; the other group of shift push plates 425 is used to push the packaging box 6 loaded in the plastic-sealed bag 7 from the other end of the heat sealing table 41 into the thermoplastic smoothing assembly 5;

[0044] The sealing assembly 43 includes a fixed mounting frame 431 and two groups of heat sealing modules. The fixed mounting frame 431 is fixedly mounted on the fixed support frame 11; one group of heat sealing modules is mounted on the fixed mounting frame 431, and the other group of heat sealing modules is mounted on the fixed support frame 11; the two heat sealing modules are symmetrically arranged up and down; the heat sealing modules include a sealing cylinder 432, a heat insulation plate 433 and a sealing heat sealing strip 434; one sealing cylinder 432 is fixedly mounted on the fixed mounting frame 431, and the other sealing cylinder 432 is fixedly mounted on the fixed support frame 11; the movable end of the sealing cylinder 432 is fixedly mounted with a heat insulation plate 433, and the heat insulation plate 433 is fixedly mounted with a sealing heat sealing strip 434;

[0045] The material blocking structure includes a material blocking cylinder 411 and a blocking rod 412; the material blocking cylinder 411 is fixedly mounted on a fixed mounting frame 431, and the blocking rod 412 is fixedly mounted on the movable end of the material blocking cylinder 411;

[0046] The corner cutting assembly 44 includes a vertical cylinder linear module 441, a pneumatic clamping jaws 442 and a corner cutting heat sealing strip 443. The vertical cylinder linear module 441 is fixedly mounted on the fixed support frame 11. The moving end of the vertical cylinder linear module 441 is fixedly mounted with four pneumatic clamping jaws 442 in a rectangular array. The output end of the pneumatic clamping jaws 442 is fixedly mounted with a corner cutting heat sealing strip 443.

[0047] like Figure 3 and Figure 7As shown, the thermoplastic smoothing assembly 5 includes a thermoplastic support frame 51, a rotating motor 52, a rotating frame 53, a material guiding ramp 55, a fixed smoothing plate 56 and a blanking platform 57. The thermoplastic support frame 51 is fixedly mounted on the base 1; the rotating motor 52 is fixedly mounted on the thermoplastic support frame 51; the supporting shaft is fixedly mounted on the thermoplastic support frame 51, and the rotating frame 53 is rotatably mounted on the supporting shaft on the thermoplastic support frame 51; the output end of the rotating motor 52 is fixedly connected to the rotating frame 53; the support seat on the thermoplastic support frame 51 passes through the middle part of the rotating frame 53 and is fixedly mounted with a fixed smoothing plate 56; thermoplastic grooves 54 are symmetrically opened on the rotating frame 53; the material guiding ramp 55 is fixedly mounted on the outer side of the thermoplastic groove 54; the blanking platform 57 is fixedly mounted on the base 1; a heater is fixedly mounted on the rotating frame 53, and the heater is electrically connected to the external power supply through a conductive slip ring; the inner wall of the thermoplastic groove 54 and the surface of the material guiding ramp 55 constitute the heat conduction panel of the electric heating plate.

[0048] After the packaging box 6 with the plastic-sealed bag 7 is sealed, the sealing cylinder 432 drives the heat-insulating plate 433 and the heat-sealing strip 434 to return to their original position. The packaging box 6 and the plastic bag 7 with the opening are moved to the other end of the heat sealing table 41, and then the clearance cylinder 423 drives the movable mounting frame 424 and the shift push plate 425 to move vertically downward, so that the shift push plate 425 moves to the lower side of the clearance groove 421; after the shift cylinder linear module 422 drives the clearance cylinder 423 and the movable mounting frame 424 to reset, the clearance cylinder 423 drives the movable mounting frame 424 and the shift push plate 425 to reset, so that the shift push plate 425 moves to the lower side of the clearance groove 421. The push plate 425 passes through the clearance slot 421 again; at the other end of the heat sealing station 41, the vertical cylinder linear module 441 drives the multiple pneumatic clamps 442 to move vertically downward, so that the corner cutting heat sealing strips 443 at the output ends of the pneumatic clamps 442 move to the two sides of the corners of the plastic packaging bag 7; then the pneumatic clamps 442 drive the corner cutting heat sealing strips 443 to clamp the corners of the plastic packaging bag 7 and heat-melt the corners of the plastic packaging bag 7, so that the corners of the plastic packaging bag 7 fall off;

[0049] The shift cylinder linear module 422 drives the displacement cylinder 423, the movable mounting frame 424 and the shift push plate 425 to move, and pushes the plastic packaging bag 7 and the packaging box 6 with the corners removed into a thermoplastic groove 54 of the rotating frame 53 through another set of shift push plates 425; the rotating motor 52 drives the rotating frame 53 to rotate, thereby driving the packaging box 6 and the plastic packaging bag 7 in the thermoplastic groove 54 on the rotating frame 53 to rotate, so that the multiple surfaces of the plastic packaging bag 7 outside the packaging box 6 contact the inner wall of the thermoplastic groove 54 in turn; until the rotating frame 53 drives the packaging box 6 and the plastic packaging bag 7 to rotate through the thermoplastic groove 54 Move to the lower side; make the packaging box 6 and the plastic bag 7 contact with the material guiding ramp 55; in this process, the heater heats multiple surfaces of the plastic bag 7 outside the packaging box 6 through the inner wall of the thermoplastic groove 54 and the material guiding ramp 55, so that the plastic bag 7 outside the packaging box 6 shrinks, and during the rotation process, the different surfaces of the plastic bag 7 outside the packaging box 6 are successively contacted with the material guiding ramp 55 and the inner wall of the thermoplastic groove 54 to be smoothed; finally, the packaging box 6 and the plastic bag 7 slide from the material guiding ramp 55 to the blanking platform 57 under the action of gravity, and the blanking is completed.

[0050] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An automatic plastic sealing machine, comprising a base (1) and a plastic bag opening mechanism (2), characterized in that: It also includes a packing box and bagging mechanism (3), a heat sealing mechanism (4) and a heat shrinkage and smoothing component (5); A plurality of fixed support frames (11) are fixedly installed on the base table (1); a plastic bag opening mechanism (2), a packing box and bagging mechanism (3) and a heat sealing mechanism (4) are installed on the fixed support frame (11); the packing box and bagging mechanism (3), the plastic bag opening mechanism (2) and the heat sealing mechanism (4) are distributed in sequence from left to right; The heat sealing mechanism (4) includes a heat sealing table (41), a shifting component (42), a sealing component (43) and a corner cutting component (44). The heat sealing table (41) is fixedly installed on the fixed support frame (11), and a material blocking structure is installed on the sealing component (43); a shifting component (42) for shifting the packing box (6) loaded on the heat sealing table (41) into the plastic bag (7) is installed on the fixed support frame (11); a sealing component (43) for sealing the plastic bag (7) is installed on the fixed support frame (11); a corner cutting component (44) for cutting off the corners of the plastic bag (7) is installed on the fixed support frame (11); A heat shrinkage and smoothing component (5) for heat shrinking the plastic bag (7) outside the packing box (6) is installed on the base table (1).

2. The automatic plastic sealing machine according to claim 1, characterized in that The plastic bag opening mechanism (2) includes a storage table (21), a material shifting cylinder linear module (22), an upper bag opening cylinder (23), an upper rectangular plate (24), a lower rectangular plate (25) and suction cups (26). The storage table (21) is fixedly installed on the fixed support frame (11), and a material shifting cylinder linear module (22) is fixedly installed on the fixed support frame (11). The moving end of the material shifting cylinder linear module (22) is fixedly installed with an upper bag opening cylinder (23), and the output end of the upper bag opening cylinder (23) is fixedly installed with an upper rectangular plate (24); the lower rectangular plate (25) is fixedly installed on the fixed support frame (11), and the lower rectangular plate (25) is located below the upper rectangular plate (24); a plurality of suction cups (26) are fixedly installed on both the upper rectangular plate (24) and the lower rectangular plate (25) in a rectangular array.

3. The automatic plastic sealing machine according to claim 2, characterized in that, The packing box and bagging mechanism (3) includes a feeding component (31) and a multi-stroke material shifting component (32). A feeding component (31) for conveying the packing box (6) and a multi-stroke material shifting component (32) are installed on the fixed support frame (11).

4. The automatic plastic sealing machine according to claim 3, wherein The feeding component (31) includes a belt conveyor (311), a feeding cylinder linear module (312), a feeding cylinder (313) and a feeding push plate (314). The belt conveyor (311) is fixedly installed on the fixed support frame (11), and the feeding cylinder linear module (312) is fixedly installed on the fixed support frame (11); the moving end of the feeding cylinder linear module (312) is fixedly installed with a feeding cylinder (313), and the output end of the feeding cylinder (313) is fixedly installed with a feeding push plate (314).

5. The automatic plastic encapsulation machine according to claim 4, wherein The multi-stroke material transfer assembly (32) comprises a multi-stroke cylinder (321), a box loading guide rail (322), a transfer mounting plate (323) and an L-shaped material feeding plate (324); the multi-stroke cylinder (321) is fixedly mounted on a fixed support frame (11); the box loading guide rail (322) is fixedly mounted on the fixed support frame (11); the transfer mounting plate (323) is connected to the box loading guide rail (322) in a limited sliding manner; the output end of the multi-stroke cylinder (321) is fixedly connected to the transfer mounting plate (323); and an L-shaped material feeding plate (324) for carrying the packaging box (6) is fixedly mounted on the transfer mounting plate (323).

6. The automatic plastic encapsulation machine according to claim 5, characterized in that, The shift assembly (42) comprises a shift cylinder linear module (422), a yielding cylinder (423), a movable mounting frame (424) and a shift push plate (425); a yielding groove (421) is symmetrically provided on the heat sealing table (41); the shift cylinder linear module (422) is fixedly mounted on the fixed support frame (11); the yielding cylinder (423) is fixedly mounted on the movable end of the shift cylinder linear module (422); and the output end of the yielding cylinder (423) is fixedly mounted. A movable mounting frame (424) is provided, and two groups of shift push plates (425) passing through the clearance groove (421) are symmetrically fixedly installed on the movable mounting frame (424); one group of shift push plates (425) is used to push the packaging box (6) filled with the plastic-sealed bag (7) from one end of the heat-sealing table (41) to the other end; the other group of shift push plates (425) is used to push the packaging box (6) filled with the plastic-sealed bag (7) from the other end of the heat-sealing table (41) into the thermoplastic smoothing component (5).

7. The automatic plastic sealing machine according to claim 6, characterized in that, The sealing assembly (43) comprises a fixed mounting frame (431) and two groups of heat sealing modules, wherein the fixed mounting frame (431) is fixedly mounted on the fixed support frame (11); one group of heat sealing modules is mounted on the fixed mounting frame (431), and the other group of heat sealing modules is mounted on the fixed support frame (11); the two heat sealing modules are symmetrically arranged up and down; the heat sealing modules comprise a sealing cylinder (432), a heat insulation plate (433) and a sealing heat sealing strip (434); one sealing cylinder (432) is fixedly mounted on the fixed mounting frame (431), and the other sealing cylinder (432) is fixedly mounted on the fixed support frame (11); a heat insulation plate (433) is fixedly mounted on the movable end of the sealing cylinder (432), and a sealing heat sealing strip (434) is fixedly mounted on the heat insulation plate (433).

8. The automatic plastic sealing machine according to claim 7, characterized in that, The thermoplastic flattening assembly (5) includes a thermoplastic support frame (51), a rotating motor (52), a rotating frame (53), a material guiding inclined table (55), a fixed flattening plate (56) and a blanking table (57). The thermoplastic support frame (51) is fixedly installed on the base table (1); a rotating motor (52) is fixedly installed on the thermoplastic support frame (51); a support shaft is fixedly installed on the thermoplastic support frame (51), and the rotating frame (53) is rotatably installed on the support shaft on the thermoplastic support frame (51); the output end of the rotating motor (52) is fixedly connected to the rotating frame (53); the support seat on the thermoplastic support frame (51) passes through the middle of the rotating frame (53) and then a fixed flattening plate (56) is fixedly installed; thermoplastic grooves (54) are symmetrically formed on the rotating frame (53); a material guiding inclined table (55) is fixedly installed on the outer side of the thermoplastic groove (54); the blanking table (57) is fixedly installed on the base table (1); a heater is fixedly installed on the rotating frame (53), and the heater is electrically connected to an external power supply through a slip ring; the inner wall of the thermoplastic groove (54) and the surface of the material guiding inclined table (55) form a heat conducting panel of the electric heating plate.

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