A plastic packaging machine

Abstract

The present application relates to the technical field of plastic packaging, and discloses a plastic packaging machine, which comprises a rack, a trimming and sealing mechanism, a first corner cutting mechanism and a second corner cutting mechanism arranged in sequence on the rack, and a carrying mechanism arranged on the rack, wherein the trimming and sealing mechanism is used for trimming and sealing the open end of a plastic packaging bag sleeved on a product to be packaged; the first corner cutting mechanism is used for cutting off one extension corner of the plastic packaging bag after trimming and sealing and closing the corresponding cut; the second corner cutting mechanism is used for cutting off the other extension corner of the plastic packaging bag after trimming and sealing and closing the corresponding cut; and the carrying mechanism is used for carrying the product to be packaged with the plastic packaging bag from one station to the next adjacent station. The plastic packaging machine improves the problem in the related art that manual trimming and sealing of the open end of the plastic packaging bag sleeved on the product is not conducive to quality control of plastic packaging.

Description

Technical Field

[0001] This invention relates to the field of plastic sealing technology, and in particular to a plastic sealing machine. Background Technology

[0002] In related technologies, it is often necessary to apply a plastic sealant to the outer surface of product packaging boxes to provide waterproofing and tamper protection. In practice, the packaging box containing the product is placed inside a plastic bag with an open top. Then, the open end of the plastic bag is manually trimmed and sealed. The quality of the sealant depends entirely on the operator's skill level, which makes it difficult to control the sealant quality and can easily lead to defects such as tears in the plastic bag during the sealing process. Summary of the Invention

[0003] This invention provides a sealing machine to improve the problem in related technologies where manual operations such as trimming and sealing the open end of the plastic bag covering the product are not conducive to controlling the sealing quality.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A laminating machine includes a frame, a trimming and sealing mechanism, a first corner-cutting mechanism, and a second corner-cutting mechanism sequentially arranged on the frame, and a conveying mechanism disposed on the frame, wherein:

[0006] The edge-cutting and sealing mechanism is used to cut and seal the open end of the plastic bag fitted onto the plastic bag to be sealed.

[0007] The first corner-cutting mechanism is used to cut off one outer corner of the sealed plastic bag after the edge is cut and sealed, and to close the corresponding cut. The second corner-cutting mechanism is used to cut off the other outer corner of the sealed plastic bag after the edge is cut and sealed, and to close the corresponding cut.

[0008] The conveying mechanism is used to move the body to be sealed with a plastic bag from one workstation to the next adjacent workstation.

[0009] When using the sealing machine provided by this invention to seal a product, the open end of the plastic bag fitted onto the product is trimmed and sealed by a trimming and sealing mechanism. A first corner-cutting mechanism cuts off one outer corner of the sealed plastic bag and closes the corresponding cut. A second corner-cutting mechanism cuts off the other outer corner of the sealed plastic bag and closes the corresponding cut. A conveying mechanism moves the product fitted with the plastic bag from one workstation to the next adjacent workstation. Compared to manual trimming and sealing of the open end of the plastic bag fitted onto the product, the operation is more standardized, the sealing quality is more controllable, the production efficiency is higher, and the possibility of defects such as tearing during sealing is reduced. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of a laminator provided in an embodiment of the present invention;

[0011] Figure 2 for Figure 1 The diagram shown is a simplified representation of the laminator with part of the outer casing omitted.

[0012] Figure 3 This is a schematic diagram of the structure of an object to be sealed after being fitted with a plastic bag and having its edges cut and sealed.

[0013] Figure 4 for Figure 3 The image shown is a top view of an object to be sealed in a plastic bag.

[0014] Figure 5 This is a schematic diagram of the edge-cutting and sealing mechanism in a laminator provided by an embodiment of the present invention;

[0015] Figure 6 This is a schematic diagram of the structure of a first positioning unit in a laminator provided in an embodiment of the present invention;

[0016] Figure 7 for Figure 6 Top view of the first positioning unit shown;

[0017] Figure 8 for Figure 6 The diagram shows the structure of the first positioning unit from another angle.

[0018] Figure 9 This is a schematic diagram of the edge-cutting and sealing section in the edge-cutting and sealing mechanism;

[0019] Figure 10 for Figure 9 A schematic diagram showing another angle of the cut-edge sealing section;

[0020] Figure 11 This is a schematic diagram of the structure of a tension drive assembly in a laminator provided by an embodiment of the present invention;

[0021] Figure 12 This is a schematic diagram of the structure of a first corner-cutting mechanism and a second corner-cutting mechanism in a sealing machine provided by an embodiment of the present invention;

[0022] Figure 13 This is a schematic diagram of the structure of the second positioning unit;

[0023] Figure 14 A structural schematic diagram of the second positioning unit from another angle;

[0024] Figure 15 This is a schematic diagram of the structure of the corner-cutting unit in the first and second corner-cutting mechanisms;

[0025] Figure 16 This is a schematic diagram of the structure of a chamfered element;

[0026] Figure 17 This is a schematic diagram showing the chamfered element with some structural elements omitted.

[0027] Figure 18 This is a schematic diagram showing the chamfered element with some structural elements omitted.

[0028] Figure 19 This is a schematic diagram of the handling mechanism.

[0029] icon:

[0030] 1-Rack;

[0031] 2-Edge cutting and sealing mechanism; 21-First positioning unit; 211-First positioning seat; 212-First positioning cylinder; 213-Second positioning cylinder; 214-First connecting rod assembly; 215-Second connecting rod assembly; 216-First positioning component; 217-Second positioning component; 218-First intermediate rod; 219-First rod; 220-Second rod; 22-Edge cutting and sealing unit; 221-First lifting assembly; 222-Opening fixing assembly; 2221-First drive assembly; 2 222-Second drive assembly; 2223-Vacuum suction cup; 2225-Tensioning bar; 2226-Tensioning lifting cylinder; 2227-Third mounting plate; 2228-Tensioning bar drive cylinder; 2229-Belt drive assembly; 223-Edge cutting and sealing assembly; 2231-First baffle; 2232-First electrothermal cutter; 2233-Third drive assembly; 2234-Fourth drive assembly; 23-Edge cutting and sealing bracket; 231-First support assembly; 232-First top plate;

[0032] 3-First corner-cutting mechanism; 31-Second lifting assembly; 32-Second positioning unit; 321-Second positioning seat; 322-Third positioning cylinder; 323-Third connecting rod assembly; 3231-Second intermediate rod; 3232-Third rod; 3233-Fourth rod; 324-Third positioning component; 33-Corner-cutting unit; 331-Second baffle; 332-Second electrothermal cutter; 333-Fifth drive assembly; 334-First frame; 335-Connecting block; 336-Pressure plate; 337-Pressure plate drive assembly; 338-Smoothing cylinder; 3381-Guide column; 3382-Guide groove; 339-Smoothing brush; 340-Second frame; 341-Sixth drive assembly; 342-Cleaning brush; 35-Corner-cutting bracket; 351-Second support assembly; 352-Second top plate; 36-Corner-cutting mounting plate;

[0033] 4-Second cutting angle mechanism;

[0034] 5-Transferring mechanism; 51-Lifting assembly; 52-Transfer assembly; 53-Clamping assembly; 531-Guide rail; 532-Clamping cylinder; 533-Clamping block; 534-Connecting rod;

[0035] 6- Loading platform;

[0036] 71-First receiving component; 72-Second receiving component; 73-Waste output cylinder;

[0037] 8- Unloading platform;

[0038] 100 - Plastic sealing bag; 101 - Outer corner; 200 - First mounting plate; 300 - Second mounting frame; 400 - Connecting post. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] like Figure 1 and Figure 2 As shown, the sealing machine provided in this embodiment includes a frame 1 and a cutting and sealing mechanism 2, a first corner cutting mechanism 3, and a second corner cutting mechanism 4 arranged sequentially on the frame 1. It also includes a conveying mechanism 5 disposed on the frame 1, wherein:

[0041] The edge-cutting and sealing mechanism 2 is used to cut and seal the open end of the plastic bag 100 that is fitted onto the plastic bag to be sealed.

[0042] The first cutting mechanism 3 is used to cut off one outer corner 101 of the sealed plastic bag 100 after the edge is cut and sealed, and to close the corresponding cut. The second cutting mechanism 4 is used to cut off the other outer corner 101 of the sealed plastic bag 100 after the edge is cut and sealed, and to close the corresponding cut.

[0043] The conveying mechanism 5 is used to move the body to be sealed with a plastic bag 100 from one workstation to the next adjacent workstation.

[0044] When using the sealing machine provided in this embodiment to seal the object to be sealed, the edge-cutting and sealing mechanism 2 cuts and seals the open end of the plastic bag 100 fitted onto the object to be sealed (the state of the open end of the plastic bag 100 fitted onto the object to be sealed after cutting and sealing is as follows). Figure 3 As shown), the first corner-cutting mechanism 3 cuts off an outer corner 101 of the sealed plastic bag 100 after the edge is cut and sealed (the cutting line is as shown). Figure 4As shown by a dotted line in the diagram), and close the corresponding cut, the second corner-cutting mechanism 4 cuts off another outer corner 101 of the sealed plastic bag 100 after the edge is cut and sealed (cutting line as shown in the diagram). Figure 4 (As shown by another dotted line in the diagram), and close the corresponding cuts. The conveying mechanism 5 realizes the transfer of the body to be sealed with the plastic bag 100 from one workstation to the next adjacent workstation. Compared with manual operation of cutting and sealing the open end of the plastic bag 100 on the outside of the product, the operation is more standardized, the sealing quality is more controllable, the production efficiency is higher, and it can also reduce the possibility of defects such as the plastic bag 100 breaking during sealing.

[0045] It should be noted that the object to be laminated mentioned in this embodiment has a fixed shape, for example, the object to be laminated can be a cuboid.

[0046] Please refer to Figure 2 and Figure 5 In one optional implementation of the aforementioned edge-cutting and sealing mechanism 2, the edge-cutting and sealing mechanism 2 includes a first positioning unit 21 mounted on the frame 1 and an edge-cutting and sealing unit 22 mounted on the frame 1 and located above the first positioning unit 21. The first positioning unit 21 is used to support and position the plastic bag 100 to be sealed, and the edge-cutting and sealing unit 22 is used to cut and seal the open end of the plastic bag 100 mounted on the plastic bag on the first positioning unit 21. Specifically, the edge-cutting and sealing mechanism 2 may include an edge-cutting and sealing bracket 23 mounted on the frame 1, with the edge-cutting and sealing unit 22 mounted on the edge-cutting and sealing bracket 23, indirectly mounted on the frame 1 through the edge-cutting and sealing bracket 23.

[0047] Furthermore, in the specific configuration of the first positioning unit 21, one optional implementation is as follows: Figure 6-8 As shown, the first positioning unit 21 includes a first positioning component and a first positioning seat 211 disposed on the frame 1. The first positioning seat 211 is used to support the body to be sealed with the plastic bag 100, and the first positioning component is used to position the body to be sealed with the plastic bag 100 on the first positioning seat 211.

[0048] Please continue to refer to Figures 6-8 The first positioning component may include a first positioning cylinder 212, a second positioning cylinder 213, a first connecting rod assembly 214, a second connecting rod assembly 215, two first positioning members 216, and two second positioning members 217. The two first positioning members 216 are spaced apart above the first positioning seat 211 along a first direction, and the two second positioning members 217 are spaced apart above the first positioning seat 211 along a second direction. The first direction and the second direction intersect.

[0049] The first link assembly 214 and the second link assembly 215 are both located below the first positioning seat 211 and hinged to it. Each end of the first link assembly 214 is drivenly connected to a first positioning element 216, and each end of the second link assembly 215 is drivenly connected to a second positioning element 217. The piston rod of the first positioning cylinder 212 is drivenly connected to the first link assembly 214, so as to drive the two first positioning elements 216 to move towards or away from each other. The piston rod of the second positioning cylinder 213 is drivenly connected to the second link assembly 215, so as to drive the two second positioning elements 217 to move towards or away from each other.

[0050] Under the action of the first positioning cylinder 212, the first connecting rod assembly 214, the second positioning cylinder 213, and the second connecting rod assembly 215, the two first positioning members 216 and the two second positioning members 217 can cooperate to limit the position of the body to be sealed with the plastic bag 100 on the first positioning seat 211.

[0051] For example, the first positioning cylinder 212 and the second positioning cylinder 213 can both be installed on the side of the first positioning seat 211 that is away from the first positioning member 216; the second direction can be the direction of movement of the body to be sealed with the plastic bag 100 on the sealing machine, and the first direction can be perpendicular to the second direction.

[0052] Please continue to refer to Figure 8 In one optional implementation, the first positioning seat 211 is provided with a through groove for guiding the movement of each positioning member (i.e., the first positioning seat 211 is provided with through grooves for guiding the movement of each first positioning member 216 and each second positioning member 217 respectively). The first link assembly 214 and / or the second link assembly 215 include a first intermediate rod 218, a first rod 219 hinged to one end of the first intermediate rod 218, and a second rod 220 hinged to the other end of the first intermediate rod 218. The middle part of the first intermediate rod 218 in the length direction is hinged to the first positioning seat 211, and the ends of the first rod 219 and the second rod 220 away from the first intermediate rod 218 respectively pass through the corresponding through grooves and are hinged to the corresponding positioning members.

[0053] The piston rod of the first positioning cylinder 212 is hinged to one end of the corresponding first intermediate rod 218 near the corresponding first rod 219 or second rod 220, and the piston rod of the second positioning cylinder 213 is hinged to one end of the corresponding first intermediate rod 218 near the corresponding first rod 219 or second rod 220.

[0054] When specifically setting the aforementioned edge-sealing unit 22, one optional implementation method is as follows: Figure 5 and Figure 9As shown, the edge-cutting and sealing unit 22 includes a first lifting assembly 221 mounted on the frame 1 and an edge-cutting and sealing portion mounted on the power output end of the first lifting assembly 221. The edge-cutting and sealing portion includes an open fixing assembly 222 and an edge-cutting and sealing assembly 223 mounted on the power output end of the first lifting assembly 221. Figure 10 As shown), the open fixing component 222 is used to fix the open end of the plastic bag 100 to be sealed on the body to be sealed, and the first lifting component 221 can drive the edge-cutting and sealing part to switch between the waiting position and the working position.

[0055] For example, please continue to refer to Figure 5 The first lifting component 221 can be mounted on the aforementioned edge-cutting and sealing bracket 23. The power output end of the first lifting component 221 can be provided with a first mounting plate 200. The second mounting frame 300 is located below the first mounting plate 200 and is positioned opposite to the first mounting plate 200. Two connecting columns 400 connect the first mounting plate 200 and the second mounting frame 300. The edge-cutting and sealing part is mounted on the aforementioned second mounting frame 300. The space enclosed by the second mounting frame 300 is the operating space for edge-cutting and sealing.

[0056] Specifically, the edge-cutting and sealing bracket 23 may include a first support assembly 231 mounted on the frame 1 and a first top plate 232 mounted on top of the first support assembly 231. The first top plate 232 is located on the side of the first mounting plate 200 opposite to the second mounting frame 300. The first lifting assembly 221 includes a first lead screw and a first motor for driving the first lead screw. The nut block of the first lead screw is fixedly connected to the first top plate 232, and the bottom end of the first lead screw is fixedly connected to the first mounting plate 200. In this way, the first motor can drive the first lead screw to rotate, thereby driving the first mounting plate 200 and the second mounting frame 300 connected to the first mounting plate 200 via the connecting column 400 to lift and lower. At this time, the bottom end of the first lead screw is the power output end of the first lifting assembly 221.

[0057] In one alternative implementation, such as Figure 9 and Figure 10 As shown, the open-end fixing assembly 222 includes a first drive assembly 2221 and a second drive assembly 2222 respectively disposed at the power output end of the first lifting assembly 221. Each of the first drive assembly 2221 and the second drive assembly 2222 has a set of vacuum suction cups 2223 at its power output end. The two sets of vacuum suction cups 2223 are arranged opposite to each other and work together to adsorb and fix the open end of the plastic bag 100 sleeved on the body to be sealed, forming a preset gap between the two sides of the open end.

[0058] For example, the two sets of vacuum suction cups 2223, driven by their respective driving components, advance to the corresponding edge of the open end of the plastic bag 100, and then retreat a predetermined distance under the drive of their respective driving components, thereby forming the aforementioned predetermined gap between the two sides of the open end of the plastic bag 100 fitted onto the body to be sealed. Each set of vacuum suction cups 2223 may contain two or three vacuum suction cups.

[0059] Furthermore, the open fixing assembly 222 may also include an open tensioning assembly located above the open fixing assembly 222. The open tensioning assembly includes a tensioning drive assembly disposed at the power output end of the first lifting assembly 221 and two tensioning rods 2225 that are transmittedly connected to the tensioning drive assembly. The two tensioning rods 2225 can extend into the aforementioned preset gap under the drive of the tensioning drive assembly and tension the open end of the plastic bag 100 fitted onto the plastic-sealed body.

[0060] Specifically, such as Figure 5 and Figure 11 As shown, the tensioning drive assembly may include a tensioning lifting cylinder 2226 disposed on the first mounting plate 200, a third mounting plate 2227 disposed on the piston rod of the tensioning lifting cylinder 2226, and two tensioning rod drive cylinders 2228 disposed on the third mounting plate 2227. The third mounting plate 2227 and the two tensioning rod drive cylinders 2228 are all located between the first mounting plate 200 and the second mounting frame 300. Each tensioning rod drive cylinder 2228 has a tensioning rod 2225 connected to its piston rod.

[0061] To ensure the synchronization of the movement of the two tensioning bars 2225, preferably, the tensioning drive assembly may further include a belt drive assembly 2229 disposed on the third mounting plate 2227, wherein both tensioning bars 2225 are connected to the drive belt in the belt drive assembly 2229.

[0062] Please continue to refer to Figure 9 and Figure 10 In one optional implementation, the edge-cutting and sealing assembly 223 includes a first baffle 2231, a first electrothermal cutter 2232, a third drive assembly 2233 and a fourth drive assembly 2234 respectively disposed at the power output end of the first lifting assembly 221. The power output end of the third drive assembly 2233 is connected to the first baffle 2231, and the power output end of the fourth drive assembly 2234 is connected to the first electrothermal cutter 2232. The first baffle 2231 and the first electrothermal cutter 2232 can cooperate with each other to cut and weld the open end of the plastic bag 100 sleeved on the plastic seal body under the drive of the third drive assembly 2233 and the fourth drive assembly 2234.

[0063] In one alternative implementation, such as Figure 2 and Figure 12 As shown, the first corner-cutting mechanism 3 and / or the second corner-cutting mechanism 4 include a second lifting assembly 31 mounted on the frame 1, a second positioning unit 32 mounted on the frame 1, and a corner-cutting unit 33 mounted on the power output end of the second lifting assembly 31. The second positioning unit 32 is used to support and position the plastic bag 100 to be sealed. The corner-cutting unit 33, driven by the second lifting assembly 31, cuts off the corresponding outer corner 101 of the sealed plastic bag 100 after the edge is cut and sealed, and closes the corresponding cut. Exemplarily, in order to save parts and space, the first corner-cutting mechanism 3 and the second corner-cutting mechanism 4 can share a second lifting assembly 31.

[0064] Specifically, the sealing machine includes a corner cutting bracket 35, a second lifting component 31 is mounted on the corner cutting bracket 35 and indirectly mounted on the frame 1 through the corner cutting bracket 35, and the power output end of the second lifting component 31 is connected to a corner cutting mounting plate 36. The corner cutting units 33 of the first corner cutting mechanism 3 and the second corner cutting mechanism 4 are both mounted on the corner cutting mounting plate 36.

[0065] Furthermore, the chamfered bracket 35 may include a second support assembly 351 mounted on the frame 1 and a second top plate 352 mounted on top of the second support assembly 351. The second lifting assembly 31 includes a second lead screw and a second motor for driving the lead screw. The nut block of the second lead screw is fixedly connected to the second top plate 352, and the bottom end of the second lead screw is fixedly connected to the chamfered mounting plate 36. In this way, the second motor can drive the second lead screw to rotate, thereby driving the chamfered mounting plate 36 and the chamfered unit 33 mounted on the chamfered mounting plate 36 to rise and fall through the bottom end of the second lead screw. At this time, the bottom end of the second lead screw is the power output end of the second lifting assembly 31.

[0066] It should be noted that the first corner cutting mechanism 3 and / or the second corner cutting mechanism 4 include..., that is, the first corner cutting mechanism 3 may include..., the second corner cutting mechanism 4 may include..., or both the first corner cutting mechanism 3 and the second corner cutting mechanism 4 may include....

[0067] In one specific implementation, such as Figure 13 and Figure 14 As shown, the second positioning unit 32 may include a second positioning component and a second positioning seat 321 disposed on the frame 1. The second positioning seat 321 is used to set the body to be sealed with the plastic bag 100, and the second positioning component is used to position the body to be sealed with the plastic bag 100 on the second positioning seat 321.

[0068] For example, please continue to refer to Figure 13 and Figure 14The second positioning assembly includes a third positioning cylinder 322, a third connecting rod assembly 323, and two third positioning elements 324. The two third positioning elements 324 are spaced apart above the second positioning seat 321 along a first direction. The third connecting rod assembly 323 is located below the second positioning seat 321 and is hinged to the second positioning seat 321. Each end of the third connecting rod assembly 323 is connected to a third positioning element 324.

[0069] The piston rod of the third positioning cylinder 322 is connected to the third connecting rod assembly 323 for transmission, so that the third connecting rod assembly 323 drives the two third positioning members 324 to move towards or away from each other, so that the two third positioning members 324 can limit the position of the body to be sealed with the plastic bag 100 in the first direction.

[0070] For example, the third positioning cylinder 322 can be installed on the side of the second positioning seat 321 that is opposite to the third positioning member 324.

[0071] Please continue to refer to Figure 13 and Figure 14 In one optional implementation, the second positioning seat 321 is provided with a through groove for guiding the movement of each third positioning member 324. The third linkage assembly 323 includes a second intermediate rod 3231, a third rod 3232 hinged to one end of the second intermediate rod 3231, and a fourth rod 3233 hinged to the other end of the second intermediate rod 3231. The middle part of the second intermediate rod 3231 in the length direction is hinged to the second positioning seat 321. The ends of the third rod 3232 and the fourth rod 3233 away from the second intermediate rod 3231 pass through the corresponding through grooves and are hinged to the corresponding third positioning member 324.

[0072] The piston rod of the third positioning cylinder 322 is hinged to one end of the third rod 3232 or the fourth rod 3233 adjacent to the second intermediate rod 3231.

[0073] The second positioning component may also include two fourth positioning elements spaced apart above the second positioning seat 321 along the second direction, and a fourth positioning cylinder corresponding to each of the two fourth positioning elements. The two fourth positioning cylinders drive the two fourth positioning elements to move closer or further away from each other, so as to limit the body to be sealed with the plastic bag 100 on the second positioning seat 321 in the second direction.

[0074] In one alternative implementation, such as Figures 15-17As shown, the corner cutting unit 33 includes a second baffle 331 disposed at the power output end of the second lifting assembly 31, a second electrothermal cutter 332 rotatably disposed at the power output end of the second lifting assembly 31, and a fifth drive assembly 333 disposed at the power output end of the second lifting assembly 31. The power output end of the fifth drive assembly 333 is connected to the second electrothermal cutter 332 and can drive the second electrothermal cutter 332 to cut onto the second baffle 331.

[0075] For example, the corner-cutting unit 33 may include a first frame 334 fixedly connected to the corner-cutting mounting plate 36, a second baffle 331 fixedly mounted on the first frame, and a second electrothermal cutter 332 rotatably mounted on the first frame 334; the fifth drive assembly 333 includes a cutter drive cylinder hinged to the first frame 334. The cutter drive cylinder is mounted on the first frame 334 and hinged to the first frame 334. For example, a connecting block 335 is rotatably connected to the first frame 334, and the connecting block 335 is fixedly connected to the corner-cutting drive cylinder.

[0076] To facilitate the removal of the outer corner 101, in one optional implementation, the chamfering unit 33 includes a pressure plate assembly, such as... Figure 17 and Figure 18 As shown, the pressure plate assembly includes a pressure plate 336 rotatably disposed at the power output end of the second lifting assembly and a pressure plate drive assembly 337 disposed at the power output end of the second lifting assembly 31. The pressure plate is located between the second baffle and the second electrothermal cutter. The power output end of the pressure plate drive assembly 337 is connected to the pressure plate 336. The pressure plate 336 is used to press the corresponding outer corner 101 of the sealed plastic bag 100 after edge cutting and sealing onto the corresponding second baffle 331 under the drive of the pressure plate drive assembly 337 before the second electrothermal cutter 332 cuts onto the second baffle 331.

[0077] For example, the pressure plate drive assembly 337 includes a pressure plate drive cylinder hinged to the power output end of the second lifting assembly 31. Optionally, the pressure plate drive cylinder is disposed on the first frame 334 and hinged to the first frame 334, and the piston rod of the pressure plate drive cylinder is hinged to the pressure plate 336.

[0078] To make the outer corner 101 smoother before cutting, thus facilitating a more regular cut shape after welding, in one optional implementation, the corner-cutting unit 33 includes an outer corner smoothing component for smoothing the corresponding outer corner 101 of the sealed plastic bag 100 after edge cutting and sealing, such as... Figure 16 and Figure 18As shown, the outer corner smoothing component includes a smoothing cylinder 338 disposed at the power output end of the second lifting component 31 and a smoothing brush 339 disposed at the power output end of the smoothing cylinder 338. The smoothing brush 339 is used to smooth the corresponding outer corner 101 of the plastic bag 100 after it has been cut and sealed, driven by the smoothing cylinder 338.

[0079] Specifically, the chamfering unit 33 includes a second frame 340 connected to the first frame 334 and capable of sliding relative to the first frame 334 in the vertical direction, a smoothing cylinder 338 disposed on the first frame 334 and its power output end connected to the second frame 340, and a smoothing brush 339 connected to the second frame 340.

[0080] To achieve a better smoothing effect, for example, the smoothing brush 339 is rotatably connected to the second frame 340, and the smoothing brush 339 and the second frame 340 are provided with a guide post 3381 and a guide groove 3382, respectively. The guide post 3381 is inserted into the guide groove 3382 and can slide along the guide groove 3382.

[0081] After the corner is cut, debris or powder may remain on the second baffle 331. To avoid the impact of debris or powder on the subsequent corner cutting process, one optional implementation is as follows: Figure 15 As shown, the corner cutting unit 33 includes a baffle cleaning assembly, which includes a sixth drive assembly 341 disposed at the power output end of the second lifting assembly 31 and a cleaning brush 342 disposed at the power output end of the sixth drive assembly 341. The cleaning brush 342 can sweep across the working surface of the second baffle 331 under the drive of the sixth drive assembly 341.

[0082] To reduce the number of parts in the sealing machine and save space and cost, in one specific implementation, the baffle cleaning assemblies of the two corner-cutting units 33 can share a single sixth drive assembly 341. Specifically, the sixth drive assembly 341 may include a cleaning cylinder mounted on the first frame 334. The piston rod of the cleaning cylinder is connected to the brushes in the two baffle cleaning assemblies, and the extension and retraction direction of the cleaning cylinder piston rod is parallel to the length direction of the second baffle 331.

[0083] In one optional implementation, the edge-cutting and sealing mechanism 2, the first corner-cutting mechanism 3, and the second corner-cutting mechanism 4 are sequentially arranged on the frame 1 along the second direction. In this case, the conveying mechanism 5 may include a lifting component 51 arranged on the frame 1, a translation component 52 arranged at the power output end of the lifting component 51, and a plurality of clamping components 53 arranged at the power output end of the translation component 52, wherein the plurality of clamping components 53 are spaced apart along the second direction.

[0084] For example, such as Figure 19As shown, the clamping assembly 53 may include a guide rail 531 fixed to the power output end of the translation assembly 52 and extending along the second direction, a clamping cylinder 532 (linear action cylinder) disposed on the guide rail 531, two clamping blocks 533 slidably connected to the guide rail 531, and connecting rods 534 corresponding to the clamping blocks 533. Each clamping block 533 is located on the clamping side of the guide rail 531, and the extension direction of the piston rod of the clamping cylinder 532 is away from the clamping side of the guide rail 531. Each connecting rod 534 is hinged at one end to the corresponding clamping block 533 and at the other end to the piston rod of the clamping cylinder 532, so that the two clamping blocks 533 can realize the picking and putting of the plastic-sealed body covered with the plastic-sealed bag 100 under the action of the clamping cylinder 532 and the connecting rod 534.

[0085] Furthermore, a loading platform 6 can be provided on the side of the edge-cutting and sealing mechanism 2 on the frame 1 away from the first corner-cutting mechanism 3, and a unloading platform 8 can be provided on the side of the second corner-cutting mechanism 4 away from the first corner-cutting mechanism 3. The loading platform 6 is used to support and position the body to be sealed with the plastic-sealed bag 100, and the unloading platform 8 is used to support and position the body to be sealed after plastic sealing.

[0086] The edge-cutting and sealing mechanism 2, the first corner-cutting mechanism 3, and the second corner-cutting mechanism 4 can all include a waste output unit to transport out the waste generated by edge-cutting or corner-cutting. For example, the waste output unit can include a first receiving member 71 rotatably mounted on the corresponding edge-cutting and sealing bracket 23 or corner-cutting bracket 35, a second receiving member 72 fixed on the corresponding edge-cutting and sealing bracket 23 or corner-cutting bracket 35 and located below the first receiving member 71, and a waste output cylinder 73 for driving the first receiving member 71 to switch between the receiving station and the dumping station. The cylinder body of the waste output cylinder 73 is hinged to the corresponding edge-cutting and sealing bracket 23 or corner-cutting bracket 35, and the piston rod of the waste output cylinder 73 is hinged to the first receiving member 71.

[0087] When the first receiving member 71 is in the receiving position, it can receive the waste material generated by cutting edges or corners. When the first receiving member 71 is in the dumping position, it can dump the received waste material to the second receiving member 72 so that the waste material can be output through the second receiving member 72.

[0088] To save on parts and space occupied by the sealing machine, the first corner cutting mechanism 3 and the second corner cutting mechanism 4 can share a single waste output unit.

[0089] The steps for using the sealing machine provided in this embodiment to seal the object to be sealed are as follows:

[0090] Place the object to be sealed, which is covered with a plastic sealing bag 100, on the loading platform 6;

[0091] Subsequently, the transport mechanism 5 transports the body to be sealed with the plastic bag 100 onto the first positioning unit 21, and the first positioning unit 21 positions the body to be sealed with the plastic bag 100 on it.

[0092] Subsequently, the edge-cutting and sealing mechanism 2 operates, the first lifting component 221 drives the edge-cutting and sealing part to descend, and the opening fixing component 222 adsorbs and fixes the opening end of the plastic bag 100 sleeved on the body to be sealed, and forms a preset gap between the two sides of the opening end.

[0093] Subsequently, the tensioning drive assembly drives the two tensioning rods 2225 to descend, so that both tensioning rods 2225 are inserted into the aforementioned preset gaps and tension the open end of the plastic seal bag 100.

[0094] Subsequently, the third drive assembly 2233 and the fourth drive assembly 2234 are activated, causing the first baffle 2231 and the first electrothermal cutter 2232 to cut and weld the open end of the plastic seal bag 100.

[0095] Subsequently, the tensioning drive assembly, as well as the third drive assembly 2233 and the fourth drive assembly 2234, are reset.

[0096] Subsequently, the transport mechanism 5 transports the body to be sealed with the plastic bag 100 to the second positioning unit 32 of the first corner cutting mechanism 3, and the second positioning unit 32 positions the body to be sealed with the plastic bag 100 on it.

[0097] Subsequently, the second lifting component 31 drives the chamfering unit 33 to descend, and the smoothing cylinder 338 drives the smoothing brush 339 to descend, smoothing the outer extension angle 101.

[0098] Subsequently, the smoothing cylinder 338 is reset, the second lifting component 31 drives the corner cutting unit 33 to continue to descend, and the fifth drive component 333 drives the second electric heating cutter 332, so that the second electric heating cutter 332 cooperates with the second baffle 331 to cut the outer extension angle 101 located between the two, and weld the corresponding cut.

[0099] Subsequently, the fifth drive assembly 333 resets, and the sixth drive assembly 341 drives the cleaning brush 342 to sweep across the working surface of the second baffle 331 to clean the second baffle 331.

[0100] Subsequently, the handling mechanism 5 transports the body to be sealed with the plastic bag 100 to the second positioning unit 32 of the second corner cutting mechanism 4;

[0101] When the first corner cutting mechanism and the second corner cutting mechanism have the same structure, when the second corner cutting mechanism 4 cuts and welds the cut on another outer corner 101, the action of the second corner cutting mechanism 4 can be the same as the action of the first corner cutting mechanism 3, which will not be described in detail here.

[0102] After completing the above steps, the conveying mechanism 5 will move the body to be sealed with the plastic bag 100 to the unloading platform;

[0103] Then, the sealed body is transferred to a heat shrink oven for shrinkage treatment.

[0104] The automated laminator production provided in this embodiment reduces tedious operator procedures. All operational parameters are controlled by software, enabling mass production, improving product yield and lamination quality stability, and standardizing the lamination process. The automatic control panel allows adjustment of sealing temperature, time, and the stroke of each actuator, making it suitable for different machine types and saving changeover time. The sealing corner positions and welding temperature / time for lamination packaging are set and controlled by software; different machine types only need to call the parameters stored in the machine, increasing production efficiency by 60%.

[0105] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A laminating machine, characterized in that, The system includes a frame, a cutting and sealing mechanism, a first corner cutting mechanism, and a second corner cutting mechanism sequentially arranged on the frame, and a conveying mechanism disposed on the frame, wherein: The edge-cutting and sealing mechanism is used to cut and seal the open end of the plastic bag fitted onto the plastic bag to be sealed. The first corner-cutting mechanism is used to cut off one outer corner of the sealed plastic bag after the edge is cut and sealed, and to close the corresponding cut. The second corner-cutting mechanism is used to cut off the other outer corner of the sealed plastic bag after the edge is cut and sealed, and to close the corresponding cut. The conveying mechanism is used to move the body to be sealed with a plastic bag from one workstation to the next adjacent workstation; The first corner-cutting mechanism and / or the second corner-cutting mechanism include a second lifting assembly disposed on the frame, a second positioning unit disposed on the frame, and a corner-cutting unit disposed at the power output end of the second lifting assembly. The second positioning unit is used for bearing and positioning the plastic bag to be sealed. The corner-cutting unit is used to cut off the corresponding outer corner of the plastic bag after the edge is cut and sealed, and close the corresponding cut, under the drive of the second lifting assembly. The corner-cutting unit includes a second baffle disposed at the power output end of the second lifting component, a second electrothermal cutter rotatably disposed at the power output end of the second lifting component, and a fifth drive component disposed at the power output end of the second lifting component. The power output end of the fifth drive component is connected to the second electrothermal cutter and can drive the second electrothermal cutter to cut onto the second baffle. The power output end of the second lifting component is connected to a corner-cutting mounting plate, and the corner-cutting units of the first and second corner-cutting mechanisms are both mounted on the corner-cutting mounting plate. The corner-cutting unit includes a first frame fixedly connected to the corner-cutting mounting plate, a second baffle fixedly mounted on the first frame, and a second electrothermal cutter rotatably mounted on the first frame. The fifth driving component includes a cutter driving cylinder hinged to the first frame. The cutter driving cylinder is mounted on the first frame and hinged to the first frame. A connecting block is rotatably connected to the first frame, and the connecting block is fixedly connected to the cutter driving cylinder. The corner-cutting unit includes a pressure plate assembly, which includes a pressure plate rotatably disposed at the power output end of the second lifting assembly and a pressure plate drive assembly disposed at the power output end of the second lifting assembly. The pressure plate is located between the second baffle and the second electrothermal cutter, and the power output end of the pressure plate drive assembly is connected to the pressure plate. The pressure plate is used to press the corresponding outer corner of the sealed plastic bag after edge cutting onto the corresponding second baffle under the drive of the pressure plate drive assembly before the second electrothermal cutter cuts onto the second baffle.

2. The sealing machine according to claim 1, characterized in that, The edge-cutting and sealing mechanism includes a first positioning unit disposed on the frame and an edge-cutting and sealing unit disposed on the frame and located above the first positioning unit. The first positioning unit is used to support and position the body to be sealed with a plastic bag, and the edge-cutting and sealing unit is used to cut and seal the open end of the plastic bag on the body to be sealed on the first positioning unit.

3. The sealing machine according to claim 2, characterized in that, The first positioning unit includes a first positioning component and a first positioning seat disposed on the frame. The first positioning seat is used to support the body to be sealed with a plastic bag, and the first positioning component is used to position the body to be sealed with a plastic bag on the first positioning seat.

4. The sealing machine according to claim 3, characterized in that, The first positioning assembly includes a first positioning cylinder, a second positioning cylinder, a first connecting rod assembly, a second connecting rod assembly, two first positioning members, and two second positioning members. The two first positioning members are spaced apart above the first positioning seat along a first direction, and the two second positioning members are spaced apart above the first positioning seat along a second direction. The first direction intersects the second direction. Both the first connecting rod assembly and the second connecting rod assembly are located below the first positioning seat and are hinged to it. Each end of the first connecting rod assembly is connected to a first positioning member, and each end of the second connecting rod assembly is connected to a second positioning member. The piston rod of the first positioning cylinder is driven to the first connecting rod assembly, so as to drive the two first positioning members to move towards each other or away from each other through the first connecting rod assembly; the piston rod of the second positioning cylinder is driven to the second connecting rod assembly, so as to drive the two second positioning members to move towards each other or away from each other through the second connecting rod assembly. Under the action of the first positioning cylinder, the first connecting rod assembly, the second positioning cylinder, and the second connecting rod assembly, the two first positioning members and the two second positioning members can cooperate to limit the position of the body to be sealed with the plastic bag on the first positioning seat.

5. The sealing machine according to claim 4, characterized in that, The first positioning seat is provided with a through groove for guiding the movement of each positioning component; The first link assembly and / or the second link assembly includes a first intermediate rod, a first rod hinged to one end of the first intermediate rod, and a second rod hinged to the other end of the first intermediate rod. The middle part of the first intermediate rod in the length direction is hinged to the first positioning seat. The ends of the first rod and the second rod away from the first intermediate rod pass through corresponding through slots and are hinged to corresponding positioning members. The piston rod of the first positioning cylinder is hinged to one end of the corresponding first intermediate rod adjacent to the corresponding first rod or second rod, and the piston rod of the second positioning cylinder is hinged to one end of the corresponding first intermediate rod adjacent to the corresponding first rod or second rod.

6. The sealing machine according to claim 2, characterized in that, The edge-cutting and sealing unit includes a first lifting assembly mounted on the frame and an edge-cutting and sealing part mounted on the power output end of the first lifting assembly. The edge-cutting and sealing part includes an open-end fixing assembly and an edge-cutting and sealing assembly mounted on the power output end of the first lifting assembly. The open-end fixing assembly is used to fix the open end of the plastic bag to be sealed. The first lifting assembly can drive the edge-cutting and sealing part to switch between a waiting position and a working position.

7. The sealing machine according to claim 6, characterized in that, The opening fixing assembly includes a first drive assembly and a second drive assembly respectively disposed at the power output end of the first lifting assembly. Each drive assembly is provided with a set of vacuum suction cups at its power output end. The two sets of vacuum suction cups are arranged opposite to each other and are used to work together to adsorb and fix the opening end of the plastic bag sleeved on the body to be sealed, and to form a preset gap between the two sides of the opening end. The opening fixing assembly also includes an opening tensioning assembly located above the opening fixing assembly. The opening tensioning assembly includes a tensioning drive assembly disposed at the power output end of the first lifting assembly and two tensioning rods that are transmittedly connected to the tensioning drive assembly. The two tensioning rods can extend into the preset gap under the drive of the tensioning drive assembly and tension the opening end of the plastic bag fitted on the body to be sealed.

8. The sealing machine according to claim 6, characterized in that, The edge-cutting and sealing assembly includes a first baffle, a first electrothermal cutter, a third drive assembly and a fourth drive assembly respectively disposed at the power output end of the first lifting assembly. The power output end of the third drive assembly is connected to the first baffle, and the power output end of the fourth drive assembly is connected to the first electrothermal cutter. Under the drive of the third drive assembly and the fourth drive assembly, the first baffle and the first electrothermal cutter can cooperate with each other to cut and weld the open end of the plastic bag fitted on the plastic seal body.

9. The sealing machine according to claim 1, characterized in that, The second positioning unit includes a second positioning component and a second positioning seat disposed on the frame. The second positioning seat is used to set the object to be sealed with a plastic bag, and the second positioning component is used to position the object to be sealed with the plastic bag on the second positioning seat.

10. The sealing machine according to claim 9, characterized in that, The second positioning assembly includes a third positioning cylinder, a third connecting rod assembly, and two third positioning members. The two third positioning members are spaced apart above the second positioning seat along a first direction. The third connecting rod assembly is located below the second positioning seat and is hinged to the second positioning seat. Each end of the third connecting rod assembly is connected to one of the third positioning members. The piston rod of the third positioning cylinder is connected to the third connecting rod assembly for transmission, so that the two third positioning members can move towards or away from each other through the third connecting rod assembly, so that the two third positioning members can define the position of the body to be sealed with the plastic bag in the first direction.

11. The sealing machine according to claim 1, characterized in that, The pressure plate drive assembly includes a pressure plate drive cylinder hinged to the power output end of the second lifting assembly; And / or, the fifth drive assembly includes a cutter drive cylinder hinged to the power output end of the second lifting assembly.

12. The sealing machine according to claim 1, characterized in that, The corner cutting unit includes an outer corner smoothing component for smoothing the corresponding outer corner of the plastic bag after the edge is cut and sealed. The outer corner smoothing component includes a smoothing cylinder disposed at the power output end of the second lifting component and a smoothing brush disposed at the power output end of the smoothing cylinder. The smoothing brush is used to smooth the corresponding outer corner of the plastic bag after the edge is cut and sealed under the action of the smoothing cylinder.

13. The sealing machine according to claim 1, characterized in that, The corner-cutting unit includes a baffle cleaning assembly, which includes a sixth drive assembly disposed at the power output end of the second lifting assembly and a cleaning brush disposed at the power output end of the sixth drive assembly. The cleaning brush can sweep across the working surface of the second baffle under the drive of the sixth drive assembly.

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