Sealing device for packaging bag production

Abstract

The invention relates to the technical field of packaging bag sealing devices, and provides a sealing device for packaging bag production, which comprises a frame body, a conveying roller is rotationally arranged on the frame body, a finished product table and a waste product table which are used for receiving packaging bags are further arranged on the frame body, and the finished product table is positioned on the front side of the conveying roller; the guiding piece is arranged on the frame body in a swinging mode and can support and guide the packaging bags on the conveying rollers to the finished product table or the waste product table after swinging. The detection force application roller is rotationally arranged on the frame body, and at least two spiral parts with opposite rotation directions are arranged on the detection force application roller; after the detection force application roller rotates, the spiral part can apply opposite force to the packaging bag seal so as to detect the packaging bag seal. By means of the technical scheme, the sealing device can detect whether sealing is firm or not staggered and whether defects exist or not, quality detection is achieved, bags are guided to a finished product table or a waste product table according to the detection result by swinging the guiding piece, the problem that automatic detection and collection are difficult is solved, real-time detection and classification can be achieved, time is saved, efficiency is improved, and labor intensity is reduced.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of packaging bag sealing device, in particular to a sealing device for packaging bag production. BACKGROUND

[0002] Pet food has high requirements for the barrier property, sealing property, automation and safety of packaging bags. Therefore, a whole packaging bag production line is currently often used to convert raw material rolls into finished bags, which integrates material processing, printing, compounding, bag making and sealing, etc. to efficiently produce packaging bags meeting the requirements.

[0003] For the sealing device of the sealing link, the material at the sealing position of the packaging bag is usually made to reach a state of adhesion or buckling through heating, pressurization or other physical / chemical methods, so as to form a tight sealing structure, thereby preventing air, moisture, microorganisms, etc. from entering, and protecting the shelf life and quality of pet food.

[0004] However, after the sealing of the packaging bag is completed, the sealing position may have a phenomenon of adhesion or buckling that is not firm, such as separation of one half, etc. The existing equipment is not convenient for automatically detecting and separately collecting the packaging bags with sealing defects, and sampling detection needs to be performed afterwards, which is relatively inconvenient for detection, and the detection result is not accurate enough, thereby affecting the quality and efficiency of sealing. SUMMARY

[0005] To overcome the above defects, embodiments of the present application provide a sealing device for packaging bag production, which solves the technical problem in the related art that the sealing device cannot automatically detect and separately collect the packaging bags with sealing defects after the sealing of the packaging bag is completed.

[0006] According to one aspect, at least one embodiment of the present application provides a sealing device for packaging bag production for receiving packaging bags, comprising: a frame body, a conveying roller for conveying the packaging bags is rotatably arranged on the frame body, and a finished product table and a waste product table for receiving the packaging bags are further arranged on the frame body, the finished product table is located on the front side of the conveying roller, and the waste product table is located above or below the finished product table; a guide member, the guide member is swingably arranged on the frame body and located between the conveying roller and the finished product table, and after the guide member swings, it can support and guide the packaging bags on the conveying roller to the finished product table or the waste product table; a detection force applying roller, the detection force applying roller is rotatably arranged on the frame body and located above or below the conveying roller, a detection gap for the packaging bags to pass through is formed between the detection force applying roller and the conveying roller, the axis direction of the rotation shaft of the detection force applying roller is parallel to the axis direction of the rotation shaft of the conveying roller, and at least two spiral portions with opposite rotation directions are arranged on the detection force applying roller; The spiral part can apply a force to the packaging bag seal of the detection gap after the detection force roller rotates, so as to detect the packaging bag seal.

[0007] For example, the packaging bag production seal device provided by at least one embodiment of the present application is provided, the detection force roller is a light roller, the spiral part is sleeved on the outer peripheral wall of the detection force roller and detachably connected with the detection force roller, so as to change the size and / or position of the force applied by the spiral part to the packaging bag seal.

[0008] For example, the packaging bag production seal device provided by at least one embodiment of the present application is provided, a threaded sleeve complementary to the spiral part is sleeved on the outer peripheral wall of the detection force roller, so as to form a conveying light roller, and the conveying light roller and the conveying roller can jointly convey the packaging bag.

[0009] For example, the packaging bag production seal device provided by at least one embodiment of the present application is provided, a driving shaft is rotatably arranged on the frame body, the driving shaft penetrates through the detection force roller and is fixedly connected with the detection force roller, so as to drive the detection force roller to rotate.

[0010] For example, the packaging bag production seal device provided by at least one embodiment of the present application is provided, a transmission gear is fixedly sleeved on the outer peripheral wall of the spiral part, and a support seat is rotatably sleeved, the support seat and the transmission gear are adjacently arranged, and the packaging bag production seal device further comprises: A driving gear is rotatably arranged on the frame body and engaged with the transmission gear, so as to drive the spiral part to rotate.

[0011] For example, the packaging bag production seal device provided by at least one embodiment of the present application is provided, the rotating shaft of the conveying roller is arranged horizontally, the conveying roller is a light roller and located directly below the detection force roller, and the waste product table is located above the finished product table.

[0012] For example, the packaging bag production seal device provided by at least one embodiment of the present application is provided, the guide comprises: A swing frame is swingably arranged on the frame body, and the swing axis of the swing frame is parallel to the rotating axis of the conveying roller; A guide support roller is rotatably connected to the swing frame at both ends, the guide support roller is adjacently arranged with the conveying roller, and the rotating axes of the guide support roller are parallel to the rotating axis of the conveying roller; After the swing frame swings, the guide support roller can support and guide the packaging bag on the conveying roller to the finished product table or the waste product table.

[0013] For example, the packaging bag production seal device provided by at least one embodiment of the present application is provided, the guide further comprises: The first cutting knife is arranged on the swing frame and located above the guide support roller, and the tail end of the unqualified packaging bag can be disconnected from the subsequent packaging bag after the first cutting knife is lowered.

[0014] For example, the sealing device for packaging bag production provided by at least one embodiment of the present application further comprises: The second cutting knife is arranged on the frame body and located between the waste product table and the guide, The conveying support roller is rotatably arranged on the frame body and located below the second cutting knife, the conveying support roller is arranged adjacent to the waste product table, and the rotation axis of the conveying support roller is parallel to the rotation axis of the conveying roller. The tail end of the qualified packaging bag can be disconnected from the subsequent packaging bag after the second cutting knife is lowered.

[0015] The embodiment of the present application has the following advantages: The sealing device for packaging bag production is provided with a detection force roller, which forms a detection gap with the conveying roller, and at least two spiral portions with opposite rotation directions are arranged on the detection force roller, so that when the detection force roller rotates, the spiral portions apply at least two opposite external forces to the sealing portion of the packaging bag in the detection gap along the length direction of the sealing portion; if the sealing portion of the packaging bag is firmly adhered or buckled, the sealing portion will not be dislocated under the action of the opposite forces; if the sealing portion has defects, such as half separation, the sealing portion will be dislocated under the action of the opposite forces, thereby completing the detection of the sealing quality of the packaging bag.

[0016] Furthermore, the guide is arranged between the conveying roller and the finished product table, so that after the detection force roller detects the sealing portion of the packaging bag, the conveying packaging bag is guided to the finished product table or the waste product table on one side of the finished product table according to the detection result, thereby realizing the functions of automatic detection and separate collection of packaging bags with sealing defects, and solving the technical problems that the existing equipment cannot automatically detect and separate collection.

[0017] The device can detect and classify in real time during the conveying of the packaging bag, and does not need to perform sampling detection after the sealing is completed, thereby greatly saving time, improving the efficiency of the entire packaging bag production process, reducing manual intervention, and reducing the labor intensity of workers. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced. Obviously, the drawings in the following description are only some of the example embodiments of the present application. For those skilled in the art, other drawings can be obtained according to the contents of the example embodiments of the present application and the drawings without any creative effort.

[0019] Figure 1 Fig. 1 is a structural schematic diagram of a sealing device for packaging bag production in an embodiment of the present application; Figure 2 Fig. 2 is a partial structural diagram of the sealing device of Fig. 1; Figure 1 Figure 3 Fig. 3 is a structural diagram of another perspective of the sealing device of Fig. 1; Figure 2 Figure 4 Fig. 4 is a cooperation diagram of a detection force roller and a threaded sleeve in an embodiment of the sealing device of Fig. 1; Figure 1 Figure 5 Fig. 5 is a partial enlarged view of the sealing device of Fig. 1; Figure 4 Fig. 6 is a cooperation diagram of a detection force roller and a threaded sleeve in another embodiment of the sealing device of Fig. 1; Figure 6 Fig. 7 is an enlarged view of part A in Fig. 6; Figure 7 Figure 6 Fig. 8 is a state diagram of a cutting knife cutting a packaging bag in an embodiment of the sealing device of Fig. 1; Figure 8 Fig. 9 is a state diagram of the cutting knife two cutting a packaging bag in an embodiment of the sealing device of Fig. 1; Figure 1 Fig. 10 is a schematic diagram of a packaging bag in an embodiment of the sealing device of Fig. 1. Figure 9 Figure 1 Fig. 11 is a schematic diagram of another packaging bag in an embodiment of the sealing device of Fig. 1. Figure 10 Fig. 12 is a schematic diagram of a packaging bag in another embodiment of the sealing device of Fig. 1. Figure 1 Fig. 1: 1, frame; 2, conveying roller; 3, finished product table; 4, waste product table; 5, guide; 501, swing frame; 502, guide support roller; 6, detection force roller; 7, spiral part; 8, threaded sleeve; 9, driving shaft; 10, transmission gear; 11, support seat; 12, cutting knife one; 13, cutting knife two; 14, conveying support roller.

[0020] DETAILED DESCRIPTION The present application will be further described below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described here are only used to explain the present application, but not to limit the present application.

[0021]

[0022] ​​​​​​For the purpose of clarity, only the parts of the devices that are pertinent to the disclosure are shown in the drawings, and they do not represent the actual structure of the products. In addition, in order to make the drawings simple and easy to understand, in some drawings, only one of the components with the same structure or function is shown schematically, or only one of them is labeled. In this document, "one" means not only "only one", but also "more than one", and "several" includes "two" and "more than two".

[0023] In this document, it should be noted that unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] In the present application, unless otherwise explicitly specified and limited, "on" or "under" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "above" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. "Below", "below" and "below" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.

[0025] In the description of the present embodiment, the orientation or position relationship of the terms "up", "down", "left", "right" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0026] In addition, in the description of the present application, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0027] It shows a sealing device for packaging bag production in an embodiment of the present application. In pet food packaging production, the sealing quality of the packaging bag is crucial to guarantee the shelf life and quality of pet food. The whole process flow needs to go through raw material printing, multi-layer compounding, bag making, sealing and packaging into warehouse and other processes.

[0028] Firstly, in the whole process, the packaging bag will be prepared according to the design requirements of the packaging bag, such as plastic film (commonly known as PE, PP, PET, etc.), paper material, aluminum foil, etc. These materials may be single-layer or multi-layer composite materials made by composite process to meet the different performance requirements of barrier property, strength, etc. Then the printing equipment (such as intaglio printing machine, flexographic printing machine, etc.) is used to print the brand logo, product information, pattern, etc. (for multi-layer composite packaging bag, further dry composite, wet composite, extrusion composite process is needed to complete the multi-layer composite process) on the surface of the packaging material, and the bag making machine is used to process the packaging bag into a specific shape.

[0029] Secondly, according to the above prepared packaging bag, the appropriate sealing method is selected, such as heat sealing method: using heating device (such as heating strip, heating plate) to heat the plastic material of the sealing part of the pet packaging bag, so that it reaches the molten state, and then applying pressure through the pressing device (heat sealing mold, pressure roller) to make the molten material fuse with each other, and after cooling, a firm sealing structure is formed; such as pressure buckle method: the edge of the pet packaging bag is provided with a zipper structure matched with each other in the previous bag making process, such as common plastic zipper, which is manually pressed or mechanically assisted to make the zipper buckle, so as to realize sealing; after sealing, it will be arranged and counted, then it will be packaged, and finally it will be put into warehouse waiting for filling pet food.

[0030] And the sealing device for packaging bag production of the application is directly put into the conveying process of the device after the pet food packaging bag is sealed, and the sealing performance of the sealing of the packaging bag is detected during the conveying process, and the good products and defective products are automatically distinguished and recycled.

[0031] In the following content, the conveying direction of the packaging bag is defined as front, and the back is opposite to the conveying direction of the packaging bag.

[0032] As shown in Figures 1-3 The whole device is specifically, the frame body 1 is a frame structure made of metal (such as stainless steel) welding / plate forming, one end of which is rotatably installed with a conveying roller 2 for receiving the sealed packaging bag and conveying it to the subsequent detection part. The conveying roller 2 can be a cylindrical roller (the surface can be treated with anti-skid treatment such as rubber coating), and the two ends are provided with rotating shafts connected with the side plates of the frame body 1 through bearings, which can rotate around the shaft. The power source can be motor + belt / pulley transmission (not shown in the figure). In addition, the front side of the conveying roller 2 is provided with a finished product table 3 and a waste product table 4 for receiving and temporarily storing good products and defective products by bolts / welding. The two can be flat / table with grid blocking structure (the finished product table 3 and the waste product table 4 are both in flat form) Figure 1 The waste product table 4 is located above / below the finished product table 3 Figure 1The waste product table 4 is located above the finished product table 3, and after temporary storage, the product can be manually / automatically transferred.

[0033] Further, as the core detection part, the detection force roller 6 is installed on the frame 1, as shown in Figure 2 、 Figure 3 The detection force roller 6 is a cylindrical light roller structure, both ends of the rotating shaft are installed on the side plate of the frame 1 through the bearing seat, and are arranged in parallel with the conveying roller 2, the distance between the two forms a detection gap for the packaging bag to pass through, and at least two spiral parts 7 are processed on the surface of the roller body along the axial direction, the spiral parts 7 are convex spiral ribs or concave spiral grooves, and the rotation directions are opposite (such as left spiral + right spiral), and then when the detection force roller 6 is driven to rotate by the motor (driven in linkage with the conveying roller 2 or independently), the adjacent opposite spiral parts 7 rotate synchronously, at this time, when the packaging bag passes through the detection gap, the adjacent opposite spiral parts 7 can apply opposite forces (left spiral push + right spiral pull, or vice versa) to the seal of the packaging bag along the length direction, if the seal is firm, there will be no dislocation after being stressed; if the seal is defective, it is easy to dislocate after being stressed, so as to detect the seal quality.

[0034] For the installation / processing form of the spiral part 7, specifically, the numerical control lathe / milling machine can be used to cut the spiral part 7 on the surface of the cylindrical light roller of the detection force roller 6, which is suitable for small-batch customization and high-precision spiral requirements (such as pet food packaging bag narrow seal, which requires accurate force application).

[0035] Further, as the detection result execution part, the guide 5 is installed on the frame 1, which is located between the front side of the conveying roller 2 and the rear side of the finished product table 3, mainly plays a role in distinguishing and guiding the good products and defective products to different table surfaces, since the waste product table 4 is located above / below the finished product table 3, the structure form of the guide 5 can swing within a certain angle around the rotating shaft, the drive thereof can adopt a cylinder (not shown in the figure), the swing direction is controlled according to the detection result (electrical signal instruction), so it is necessary to correspondingly configure a visual sensor (such as an industrial camera), a controller and the drive structure of the guide 5 on the frame 1, when the visual sensor recognizes the detection result at the detection gap, the signal is transmitted to the drive structure of the guide 5 through the controller, and the guide 5 is controlled to swing in the corresponding direction, so as to guide the packaging bag to the finished product table 3 or the waste product table 4.

[0036] Specifically, as shown in Figure 2 、 Figure 3As shown, the guide 5 includes a swing frame 501 and a guide support roller 502, the swing frame 501 is installed on the side stand of the frame body 1 through rotating shafts at both ends, the swing shafts are parallel to the rotating shafts of the conveying roller 2, and the guide support roller 502 is rotatably connected to the swing frame 501 at both ends, the guide support roller 502 is adjacent to the conveying roller 2 and located at the front side of the conveying roller 2, and the rotating shafts of the guide support roller 502 are parallel to the rotating shafts of the conveying roller 2, so that after the swing frame 501 swings, the guide support roller 502 can support and guide the packaging bag on the conveying roller 2 to the finished product table 3 or the waste product table 4.

[0037] Working principle: as the conveying roller 2 rotates, the packaging bag is sent to the detection gap formed by the detection force roller 6 and the conveying roller 2, the detection force roller 6 rotates to drive at least two spiral parts 7 on the surface thereof to rotate synchronously in opposite directions, since the spiral parts 7 rotate in opposite directions, when rotating, an external force in the length direction of the sealing part of the packaging bag in the detection gap is applied to the sealing part, if the sealing part has defects (such as local imperfect adhesion, loose buckling), the opposite forces will "tear open" the defective part of the sealing part, so that the sealing part appears abnormal such as dislocation and separation, so as to complete the sealing quality detection and judgment; and after the detection is completed, the guide classification link is entered, the guide 5 is swung according to the detection result to guide the packaging bag to be conveyed to the finished product table 3 or the waste product table 4.

[0038] As a further embodiment, as shown in Figure 4 , Figure 5 The detection force roller 6 can also be sleeved with a threaded sleeve 8 complementary to the spiral part 7, that is, nested in the gap of the spiral part 7, to form a complete conveying light roller, so as to normally convey the packaging bag in the detection gap, that is, to freely switch the detection function, so as to improve the practicability of the whole device and adapt to more production occasions.

[0039] Specifically, a drive rotating shaft 9 driven by a motor is arranged on the frame body 1, penetrates through the whole detection force roller 6, and is fixedly connected (such as welded or key groove connection) with the detection force roller 6, so as to drive the detection force roller 6 to rotate; when the threaded sleeve 8 needs to be installed, one end thereof is removed, so that the threaded sleeve 8 is sleeved on the detection force roller 6 from the end and nested in the gap of the spiral part 7, different spiral parts 7 can be nested in different threaded sleeves 8, so as to finally form a complete conveying light roller.

[0040] As a parallel embodiment, in order to avoid the problem of frequent disassembly caused by the free switching of the detection function, the driving connection structure is changed to gear meshing of the outer peripheral wall, specifically, as shown in Figure 6 , Figure 7As shown, the transmission gear 10 is fixedly welded on the outer peripheral wall of the spiral part 7, and the support seat 11 is rotatably sleeved, the support seat 11 is bolted to the frame body 1, and the support seat 11 plays a role of supporting the end part of the detection force roller 6, the driving gear is rotatably arranged on the side plate of the frame body 1 and is engaged with the transmission gear 10, so that the detection force roller 6 is driven by the external motor to drive the spiral part 7 to rotate; the above structure does not need the driving shaft 9 penetrating through the detection force roller 6, but is realized by the driving gear around the upper part of the detection force roller 6, that is, the end part of the detection force roller 6 is not connected with the frame body 1, and the spare position can be utilized to sleeve the threaded sleeve 8 from the end part of the detection force roller 6, and the threaded sleeve 8 is not interfered by the support seat 11 or the transmission gear 10, because both of them are sleeved on the outer wall of the spiral part 7, and the threaded sleeve 8 only needs to be embedded in the gap of the spiral part 7 to form a complete conveying light roller.

[0041] As a further embodiment, as Figure 10 shown, there are various continuous forms for the sealed packaging bag, some are directly divided, and some are a whole continuous strip and need to be divided later, and a transition section is left between two adjacent continuous packaging bags, in order to ensure that the above continuous packaging bag can adapt to the device, and can be detected and collected, so the cutting knife one 12 is additionally arranged on the guide member 5, as Figure 2 、 Figure 3 、 Figure 9 shown, the cutting knife one 12 is arranged on the swing frame 501 through the gas cylinder lifting at both ends, and the cutting knife one 12 is located above the guide support roller 502, so that the tail end of the unqualified packaging bag is disconnected from the subsequent packaging bag after the cutting knife one 12 is lowered by the gas cylinder, and the transition section is normally connected with the subsequent packaging bag, which does not affect the subsequent detection, and the excess packaging bag behind is not cut, so that the cut packaging bag is conveniently conveyed to the waste product table 4 under the action of the guide member 5.

[0042] Further, as Figure 2 、 Figure 3 、 Figure 8 shown, the cutting knife two 13 and the conveying support roller 14 are additionally arranged, so that the good packaging bag cut by the cutting knife two 13 is conveyed to the finished product table 3 under the action of the conveying support roller 14, the cutting knife two 13 is arranged on the frame body 1 through the gas cylinder lifting at both ends, the cutting knife two 13 is located between the waste product table 4 and the guide member 5, the conveying support roller 14 is rotatably arranged on the frame body 1 and is located below the cutting knife two 13, and the conveying support roller 14 is located at the rear side of the waste product table 4, so that the tail end of the qualified packaging bag is disconnected from the subsequent packaging bag after the cutting knife two 13 is lowered by the gas cylinder, and the transition section is normally connected with the subsequent packaging bag, which does not affect the subsequent detection, and the excess packaging bag behind is not cut, so that the cut packaging bag is conveniently conveyed to the finished product table 3 under the action of the conveying support roller 14.

[0043] It should be noted that the above examples are only used to illustrate the technical solutions of the present application but not limit the present application. Although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced, without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A sealing device for a packaging bag production for receiving a packaging bag, characterized in that The utility model relates to a kind of packaging bag detection device, including: Frame body (1), the frame body (1) is equipped with conveying roller (2) for conveying packaging bag and finished product table (3) for receiving qualified packaging bag and waste product table (4) for receiving unqualified packaging bag, the finished product table (3) is located in the discharging side of the conveying roller (2), the waste product table (4) is located above the finished product table (3); Guide (5), the guide (5) is swinged in the frame body (1), is located between the conveying roller (2) and the finished product table (3), after the guide (5) swings, the packaging bag on the conveying roller (2) can be supported and guided to the finished product table (3) or the waste product table (4); Detection force roller (6), the detection force roller (6) is rotatably arranged on the frame body (1), and located above or below the conveying roller (2), the detection force roller (6) and the conveying roller (2) form detection gap for packaging bag, the rotation axis of the detection force roller (6) is parallel to the rotation axis of the conveying roller (2), and at least two spiral parts (7) of the detection force roller (6) are provided; Wherein, under the rotation of the detection force roller (6), the spiral part (7) can apply opposite force to the packaging bag of the detection gap to detect the packaging bag seal.

2. The sealing device for producing a packaging bag according to claim 1, wherein The detection force roller (6) is a light roller, and the spiral part (7) is spirally arranged on the outer wall of the detection force roller (6) and detachably connected with the detection force roller (6).

3. The sealing device for producing a packaging bag according to claim 2, wherein The outer wall of the detection force roller (6) is spirally provided with a threaded sleeve (8) which can be staggered with the spiral part (7), and the outer wall of the spiral part (7) and the outer wall of the threaded sleeve (8) are connected to form a conveying light roller for conveying packaging bags.

4. The sealing device for producing a packaging bag according to any one of claims 1 to 3, characterized in that, The frame body (1) is rotatably provided with a driving shaft (9), the driving shaft (9) penetrates the detection force roller (6) along the axial direction of the detection force roller (6) and is fixedly connected with the detection force roller (6), and the driving shaft (9) is used to drive the detection force roller (6) to rotate.

5. The sealing device for producing a packaging bag according to any one of claims 1 to 3, characterized in that, The outer wall of the spiral part (7) is fixedly provided with a transmission gear (10), the frame body (1) is rotatably provided with a driving gear, the driving gear is engaged with the transmission gear (10) to drive the spiral part (7) to rotate. The support seat (11) is provided on the frame body (2) and is arranged adjacent to the transmission gear (10), the spiral part (7) penetrates the support seat (11) and is rotatably connected with the support seat (11).

6. The sealing device for producing a packaging bag according to claim 1, wherein The guide (5) comprises: Swing frame (501), the swing frame (501) is swinged on the frame body (1), and the swing axis of the swing frame (501) is parallel to the rotation axis of the conveying roller (2); Guide support roller (502), both ends of the guide support roller (502) are rotatably connected to the swing frame (501), the guide support roller (502) is arranged adjacent to the conveying roller (2), and is used to receive and drive the packaging bag to the finished product table (3) or the waste product table (4).

7. The sealing device for producing a packaging bag according to claim 6, wherein The guide (5) further comprises: A first cutting knife (12) is slidingly arranged on the swing frame (501), and the first cutting knife (12) is located directly above the guide support roller (502). After the first cutting knife (12) is lowered, the first cutting knife (12) abuts against the guide support roller (502) to cut two adjacent packaging bags.

8. The sealing device for producing a packaging bag according to claim 1, wherein Further comprising: A second cutting knife (13) is arranged on the frame body (1) at both ends and is located between the waste table (4) and the guide (5), A conveying support roller (14) is rotatably arranged on the frame body (1) and is located directly below the second cutting knife (13). After the second cutting knife (13) is lowered, the conveying support roller (14) abuts against the second cutting knife (13) to cut two adjacent packaging bags.

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