Packaging bag flapping mechanism and packaging machine

The packaging bag beating mechanism uses an eccentric connecting rod and transmission components to smoothly flatten the packaging bag, solving the problem of packaging bag curling and lifting edges, ensuring product safety and a neat appearance, and enhancing market competitiveness.

CN223467424UActive Publication Date: 2025-10-24GUANGZHOU ZHONGFU PACKAGING TECH CO LTD
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Patent Information

Application Number
CN202422538975.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-18
Publication Date
2025-10-24
Estimated Expiration
2034-10-18

AI Technical Summary

Technical Problem

Existing packaging machines often produce bags that curl and warp after cutting, affecting their appearance and sealing performance. This exposes the contents to the external environment, increasing the risk of product spoilage, endangering user safety, and reducing market competitiveness.

Method used

Design a packaging bag tapping mechanism, including a drive motor, an eccentric connecting rod, a transmission assembly, a first tapping part and a second tapping part. The rotational motion of the drive motor is converted into linear reciprocating motion through the eccentric connecting rod. The first tapping part and the second tapping part move synchronously by the linkage of the swing arm and the connecting rod, so as to ensure that the packaging bag is tapped flat.

Benefits of technology

It effectively solves the problem of packaging bags curling and peeling, ensuring that the product is firmly fixed inside the packaging bag, reducing the risk of damage during transportation, improving the neatness of the product appearance, and enhancing market competitiveness.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a packaging bag flapping mechanism and a packaging machine. The packaging bag flapping mechanism comprises a driving motor, an eccentric connecting rod, a transmission assembly, a first flapping part, a second flapping part and a linear sliding rail. The driving motor is arranged below the first flapping part, and an output shaft of the driving motor is connected with the eccentric connecting rod; the eccentric connecting rod is fixedly connected with the first flapping part; the first flapping part and the second flapping part are sequentially arranged in the extending direction of the linear sliding rail and connected with the linear sliding rail. One end of the transmission assembly is fixedly connected with the first flapping part, and the other end of the transmission assembly is fixedly connected with the second flapping part, so that the first flapping part and the second flapping part synchronously move in opposite directions. According to the scheme provided by the invention, the problem of curling and edge warping of the packaging bag can be solved, the fact that the product is stably fixed in the packaging bag is further ensured, the damage risk in the transportation process is reduced, and the integrity of the product is protected.
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Description

Technical Field

[0001] The utility model relates to the technical field of packaging bag beating, in particular to a packaging bag beating mechanism and a packaging machine. Background Art

[0002] Packaging bags are the essential carrier for packaging machines. They are used to package various products, protecting them from environmental influences such as air, moisture, and light, thereby maintaining their freshness and extending their shelf life. They also effectively prevent physical damage to products during transportation and storage, such as squeezing, collisions, and contamination. Currently, packaging bags are widely used in daily life and industrial production.

[0003] Most modern packaging machines are highly automated. The packaging process generally includes film supply, longitudinal sealing, unloading, transverse sealing, and bag cutting, turning a roll of film into individual bags. Specifically, the machine separates the roll film into strips, seals each strip longitudinally, fills the strips with material, seals the strips transversely, and then cuts the strips into individual bags. However, existing packaging machines are prone to curling and warping after bag cutting. This curling and warping not only affects the bag's aesthetics but also prevents effective sealing, exposing the contents to the outside world, making them susceptible to contamination and accelerating product deterioration. This poses a safety risk to users and directly impacts product market acceptance and the company's competitiveness.

[0004] Therefore, there is an urgent need to design a bag flapping mechanism and packaging machine that can solve the problem of bag curling and warping, further ensure that the product is firmly fixed in the bag, reduce the risk of damage during transportation, and protect the integrity and safety of the product. At the same time, it effectively ensures that the packaging bag has a neater appearance and is easier for users to use, thereby improving the market competitiveness of the product. Utility Model Content

[0005] To overcome the problems existing in the related art, this application provides a packaging bag flapping mechanism and packaging machine. This packaging bag flapping mechanism and packaging machine can solve the problem of curling and warping of packaging bags, further ensure that the product is firmly fixed in the packaging bag, reduce the risk of damage during transportation, and protect the integrity and safety of the product. At the same time, it effectively ensures that the packaging bag has a neater appearance and is easier for users to use, thereby enhancing the market competitiveness of the product.

[0006] The first aspect of the application provides a packaging bag beating mechanism, which comprises a driving motor, an eccentric connecting rod, a transmission assembly, a first beating part, a second beating part and a linear slide rail; the driving motor is arranged below the first beating part, and the output shaft of the driving motor is connected with the eccentric connecting rod; the eccentric connecting rod is fixedly connected with the first beating part; the first beating part and the second beating part are arranged in sequence along the extension direction of the linear slide rail and are connected with the linear slide rail; one end of the transmission assembly is fixedly connected with the first beating part, and the other end is fixedly connected with the second beating part, so as to make the first beating part and the second beating part move synchronously and oppositely.

[0007] In the preferred technical solution of the application, the first beating part and the second beating part comprise a first mounting plate, a second mounting plate, a mounting rod and a beating plate; the first mounting plate is slidably fixed on the linear slide rail, and the length direction of the first mounting plate is perpendicular to the extension direction of the linear slide rail; the second mounting plate is arranged above the first mounting plate; the mounting rod is arranged on the second mounting plate, and the extension direction of the mounting rod is parallel to the extension direction of the linear slide rail; and the beating plate is arranged at one end of the mounting rod.

[0008] In the preferred technical solution of the application, a mounting through hole is further arranged on the beating plate; and the mounting through hole is used for placing a heating pipe.

[0009] In the preferred technical solution of the application, the eccentric connecting rod comprises an eccentric wheel and a driving connecting rod; the eccentric wheel is sleeved on the output shaft of the driving motor; one end of the driving connecting rod is fixedly connected with the eccentric wheel, and the other end is fixedly connected with the first mounting plate of the first beating part.

[0010] In the preferred technical solution of the application, the transmission assembly comprises a swing rod, a first connecting rod and a second connecting rod; the swing rod is rotatably arranged between the first beating part and the second beating part; one end of the first connecting rod is hingedly connected with one end of the swing rod, and the other end is fixedly connected with the first beating part; one end of the second connecting rod is hingedly connected with the other end of the swing rod, and the other end is fixedly connected with the second beating part.

[0011] In the preferred technical solution of the application, the transmission assembly further comprises a mounting shaft and a connecting shaft; the mounting shaft is arranged at the middle of the first beating part and the second beating part; the swing rod is sleeved on the mounting shaft; the connecting shaft is symmetrically arranged on the swing rod; and the first connecting rod and the second connecting rod are respectively sleeved on the connecting shaft.

[0012] The linear slide rail comprises a linear track and a sliding block.

[0013] In the preferred technical solution of the application, the hand shaker is arranged on the second mounting plate and is used to adjust the distance between the beaters.

[0014] In the preferred technical solution of the application, the hand shaker comprises a handle and a screw rod, the screw rod is connected with the second mounting plate, and the handle is connected with the screw rod.

[0015] The second aspect of the application provides a packaging machine comprising the above packaging bag beating mechanism.

[0016] The technical solution provided by the application can have the following beneficial effects: the packaging bag beating mechanism provided by the application comprises a driving motor, an eccentric connecting rod, a transmission assembly, a first beater, a second beater and a linear slide rail. By arranging the first beater and the second beater on the linear slide rail, the movement of the first beater and the second beater can be more stable. By arranging the eccentric connecting rod, the rotational movement of the driving motor can be converted into linear reciprocating movement. Through the linkage of the swing rod, the first connecting rod and the second connecting rod, the first beater and the second beater can be effectively driven to move synchronously. Compared with the prior art in which two cylinders or two motors are used to drive the first beater and the second beater to move respectively, the swing rod structure of the application not only has a simple structure, but also can effectively ensure the consistency of the movement of the first beater and the second beater, further ensuring the beating effect. Therefore, the scheme provided by the application can solve the problem of curling and edge lifting of the packaging bag, further ensure that the product is stably fixed in the packaging bag, reduce the damage risk in the transportation process, and protect the integrity and safety of the product. At the same time, the appearance of the packaging bag is more neat, which is convenient for users to use, thereby improving the market competitiveness of the product.

[0017] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the application. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and other objects, features and advantages of the application will become more apparent from the following detailed description of exemplary embodiments of the application taken in conjunction with the accompanying drawings, in which like reference characters generally refer to the same parts throughout the different views of the drawings.

[0019] Fig. 1 is a structural schematic diagram of the packaging bag beating mechanism shown in the embodiments of the application;

[0020] Fig. 21 is another structural schematic diagram of the packaging bag flapping mechanism shown in an embodiment of the present application;

[0021] Fig. 3 1 is a top view schematic diagram of a packaging bag flapping mechanism shown in an embodiment of the present application;

[0022] Fig. 4 It is a partial structural diagram of the packaging bag flapping mechanism shown in an embodiment of the present application.

[0023] Reference numerals:

[0024] 1. Driving motor; 2. Eccentric connecting rod; 21. Eccentric wheel; 22. Driving connecting rod; 3. Transmission assembly; 31. Rocker arm; 32. First connecting rod; 33. Second connecting rod; 34. Mounting shaft; 35. Connecting shaft; 4. First slapping part; 41. First mounting plate; 42. Second mounting plate; 43. Mounting rod; 44. Slapping plate; 441. Mounting through hole; 5. Second slapping part; 6. Linear slide rail; 61. Linear rail; 62. Slider; 7. Hand crank; 71. Handle; 72. Screw rod; 8. Mounting seat. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. Instead, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0026] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. As used in this application and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0027] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0028] The existing packaging machine is prone to curling and edge lifting after cutting the bag. This curling and edge lifting not only affects the appearance of the packaging bag, but also causes the contents to be exposed to the external environment, which is prone to pollution, accelerates product deterioration, threatens the safety of users, and directly affects the market acceptance and market competitiveness of the product.

[0029] To solve the above problems, the packaging bag beating mechanism provided by the embodiments of the present application can solve the problem of curling and edge lifting of the packaging bag, further ensure that the product is stably fixed in the packaging bag, reduce the risk of damage during transportation, and protect the integrity and safety of the product. At the same time, it effectively ensures that the appearance of the packaging bag is more neat, which is convenient for users to use, thereby improving the market competitiveness of the product.

[0030] The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0031] Embodiment one

[0032] Please refer to Figs. 1-4 The packaging bag beating mechanism of the present application comprises a mounting seat 8, a driving motor 1, an eccentric connecting rod 2, a transmission assembly 3, a first beating part 4, a second beating part 5, and a linear slide rail 6. The driving motor 1 is arranged below the first beating part 4, the eccentric connecting rod 2 is connected with the driving motor 1 and the first beating part 4 respectively, and is used for transmitting the power of the driving motor 1 to the first beating part 4; the linear slide rail 6 is fixed on the mounting seat 8, the first beating part 4 and the second beating part 5 are arranged on the linear slide rail 6, the transmission assembly 3 is arranged in the area surrounded by the linear slide rail 6, the first beating part 4 and the second beating part 5, one end of the transmission assembly 3 is fixedly connected with the first beating part 4, the other end is fixedly connected with the second beating part 5, and the transmission assembly 3 is used for transmitting the power of the first beating part 4 to the second beating part 5, and synchronously moving the first beating part 4 and the second beating part 5 towards each other.

[0033] Specifically, as Figs. 1-2 shown, the driving motor 1 is fixed below the mounting seat 8, and the output shaft of the driving motor 1 penetrates through the mounting seat 8 and protrudes above the upper surface of the mounting seat 8. The eccentric connecting rod 2 is connected with the output end of the driving motor 1 and is fixedly connected with the first beating part 4; for example, the eccentric connecting rod 2 comprises an eccentric wheel 21 and a driving connecting rod 22, the eccentric wheel 21 is sleeved on the output shaft of the driving motor 1, one end of the driving connecting rod 22 is fixedly connected with the eccentric wheel 21, and the other end is fixedly connected with the first beating part 4.

[0034] The first slapping part 4 and the second slapping part 5 are sequentially arranged along the extension direction of the linear slide 6 and are connected to the linear slide 6. Specifically, the first slapping part 4 and the second slapping part 5 include a first mounting plate 41, a second mounting plate 42, a mounting rod 43 and a clapping plate 44. The first mounting plate 41 is slidably fixed on the linear slide 6, and the length direction of the first mounting plate 41 is perpendicular to the extension direction of the linear slide 6. The other end of the driving connecting rod 22 is fixedly connected to the first mounting plate 41; the second mounting plate 42 is arranged above the first mounting plate 41, the mounting rod 43 is arranged on the second mounting plate 42, and the extension direction of the mounting rod 43 is parallel to the extension direction of the linear slide 6, and the clapping plate 44 is arranged at one end of the mounting rod 43. By arranging the second mounting plate 42, the consumables of the first mounting plate 41 can be reduced while facilitating the installation of the clapping plate 44; by arranging the mounting rod 43, the moving direction of the clapping plate 44 can be parallel to the extension direction of the linear slide 6.

[0035] To keep curved and warped packaging bags straight, the clapper 44 is also provided with a mounting hole 441 for placing a heating tube. Specifically, the mounting hole 441 extends through the clapper 44, and the direction of penetration of the mounting hole 441 is parallel to the length of the clapper 44. The heating tube is placed in the mounting hole 441 to heat the clapper 44, thereby facilitating the shaping of the packaging bag and achieving a better flattening effect. It should be noted that to further save energy, several mounting slots can be provided on the clapper 44, and heating tubes can be placed in several of the mounting slots, thereby effectively reducing the number of heating tubes used and lowering energy consumption.

[0036] like Figs. 3-4As shown, the transmission assembly 3 comprises a swing rod 31, a first connecting rod 32 and a second connecting rod 33, the swing rod 31 is rotatably arranged between the first beating part 4 and the second beating part 5, the first connecting rod 32 and the second connecting rod 33 are respectively arranged at two ends of the swing rod 31. Specifically, the transmission assembly 3 further comprises a mounting shaft 34 and a connecting shaft 35, the mounting shaft 34 is arranged at the middle of the first beating part 4 and the second beating part 5, the middle of the swing rod 31 is provided with an opening, and the swing rod 31 is sleeved on the mounting shaft 34 through the opening. The connecting shaft 35 is symmetrically arranged on the swing rod 31, the first connecting rod 32 and the second connecting rod 33 are respectively sleeved on the connecting shaft 35, so that one end of the first connecting rod 32 is hinged to one end of the swing rod 31, and one end of the second connecting rod 33 is hinged to the other end of the swing rod 31. In order to facilitate the synchronous movement of the first beating part 4 and the second beating part 5, the other end of the first connecting rod 32 is fixedly connected with the first beating part 4, and the other end of the second connecting rod 33 is fixedly connected with the second beating part 5. Specifically, the first connecting rod 32 is fixedly connected with the first mounting plate 41 of the first beating part 4, and the second connecting rod 33 is fixedly connected with the first mounting plate 41 of the second beating part 5.

[0037] Further, in order to make the operation of the first beating part 4 and the second beating part 5 more stable, the straight line slide rail 6 comprises a first straight line slide rail and a second straight line slide rail, the first straight line slide rail and the second straight line slide rail are arranged in parallel and symmetrically below the first beating part 4 and the second beating part 5, so that the first mounting plate 41 is transversely arranged on the first straight line slide rail and the second straight line slide rail. Any one of the straight line slide rails 6 comprises a straight line rail 61 and a sliding block 62, the sliding block 62 is slidably arranged on the straight line rail 61, and the first mounting plate 41 is fixedly connected with the sliding block 62.

[0038] Further, the packaging bag beating mechanism further comprises a hand shaker 7, the hand shaker 7 is arranged on the second mounting plate 42, and is used for adjusting the distance between the beaters 44. Specifically, the hand shaker 7 comprises a handle 71 and a lead screw 72, the lead screw 72 is connected with the second mounting plate 42, and the handle 71 is connected with the lead screw 72. By arranging the hand shaker 7, the distance between the beaters 44 can be adjusted, so that different models of packaging bags can be better adapted.

[0039] Working principle:

[0040] When the bag beating mechanism of the application works, the driving motor 1 starts to drive the eccentric wheel 21 to rotate, and then drive the driving connecting rod 22 to move back and forth. When the driving connecting rod 22 moves towards the direction where the swing rod 31 is located, it drives the first beating part 4 to move towards the second beating part 5, and then drives the first connecting rod 32 to move towards the second beating part 5, and then drives the swing rod 31 to rotate counterclockwise, and synchronously drives the second connecting rod 33 and the second beating part 5 to move towards the first beating part 4, until the beaters 44 on the first beating part 4 and the beaters 44 on the second beating part 5 abut and tightly press the bag between them, so as to beat the curved and warped bag flat. With the rotation of the eccentric wheel 21, when the driving connecting rod 22 moves away from the direction where the swing rod 31 is located, it drives the first beating part 4 to move away from the second beating part 5, and then drives the first connecting rod 32 to move away from the second beating part 5, and then drives the swing rod 31 to rotate clockwise, and synchronously drives the second connecting rod 33 and the second beating part 5 to move away from the first beating part 4, so that a gap is left between the beaters 44, which facilitates the conveying of the bag.

[0041] In the first embodiment, the bag beating mechanism of the application comprises a driving motor, an eccentric connecting rod, a transmission assembly, a first beating part, a second beating part and a linear slide rail. By arranging the first beating part and the second beating part on the linear slide rail, the movement of the first beating part and the second beating part can be more stable. By arranging the eccentric connecting rod, the rotational movement of the driving motor can be converted into linear reciprocating movement. By the linkage of the swing rod, the first connecting rod and the second connecting rod, the first beating part and the second beating part can be effectively driven to move synchronously. Compared with the prior art in which two cylinders or two motors are used to drive the first beating part and the second beating part to move respectively, the swing rod structure of the application not only has a simple structure, but also can effectively ensure the consistency of the movement of the first beating part and the second beating part, and further ensure the beating effect. Therefore, the scheme provided by the application can solve the problem of the curling and warping of the bag, further ensure that the product is stably fixed in the bag, reduce the damage risk in the transportation process, and protect the integrity and safety of the product. At the same time, the appearance of the bag is more neat, which is convenient for the user to use, and thus the market competitiveness of the product is improved.

[0042] Embodiment two

[0043] Corresponding to the above bag beating mechanism, the application further provides a packaging machine, please refer to Figs. 1-4 , specifically:

[0044] On the basis of the structure of the above-mentioned embodiment one, the packaging machine provided in the second embodiment of the present application comprises the packaging bag beating mechanism mentioned above.

[0045] The specific structure of the packaging bag beating mechanism is described in the above-mentioned embodiment one, and will not be repeated here.

[0046] In the embodiments of the present application, the packaging machine provided in the present application comprises the packaging bag beating mechanism mentioned above, so that the bag cutting mechanism can further beat the packaging bag flat through the packaging bag beating mechanism after completing the bag cutting action. Compared with the existing packaging machines which do not set the beating mechanism and thus the packaging bag is prone to bending and curling, the packaging machine provided in the present application can solve the problem of bending and curling of the packaging bag, further ensure that the product is stably fixed in the packaging bag, reduce the damage risk in the transportation process, and protect the integrity of the product.

[0047] In the description of the present application, it should be understood that the orientation words such as "front, rear, upper, lower, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Without being contrary, these orientation words do not indicate and imply that the devices or elements referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component.

[0048] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A packaging bag patting mechanism characterized by comprising: The package bag beating mechanism comprises a driving motor (1), an eccentric connecting rod (2), a transmission assembly (3), a first beating part (4), a second beating part (5) and a linear slide rail (6). The driving motor (1) is arranged below the first beating part (4), and the output shaft of the driving motor (1) is connected with the eccentric connecting rod (2). The eccentric connecting rod (2) is fixedly connected with the first beating part (4). The first beating part (4) and the second beating part (5) are arranged in sequence along the extension direction of the linear slide rail (6) and are connected with the linear slide rail (6). One end of the transmission assembly (3) is fixedly connected with the first beating part (4), and the other end is fixedly connected with the second beating part (5), so as to make the first beating part (4) and the second beating part (5) move synchronously.

2. The package bag beating mechanism according to claim 1, wherein The first beating part (4) and the second beating part (5) comprise a first mounting plate (41), a second mounting plate (42), a mounting rod (43) and a beating plate (44). The first mounting plate (41) is slidably fixed on the linear slide rail (6), and the length direction of the first mounting plate (41) is perpendicular to the extension direction of the linear slide rail (6). The second mounting plate (42) is arranged above the first mounting plate (41). The mounting rod (43) is arranged on the second mounting plate (42), and the extension direction of the mounting rod (43) is parallel to the extension direction of the linear slide rail (6). The beating plate (44) is arranged at one end of the mounting rod (43).

3. The package bag beating mechanism according to claim 2, wherein The beating plate (44) is further provided with a mounting through hole (441). The mounting through hole (441) is used for placing a heating pipe.

4. The package bag beating mechanism according to claim 2, wherein The eccentric connecting rod (2) comprises an eccentric wheel (21) and a driving connecting rod (22). The eccentric wheel (21) is sleeved on the output shaft of the driving motor (1). One end of the driving connecting rod (22) is fixedly connected with the eccentric wheel (21), and the other end is fixedly connected with the first mounting plate (41) of the first beating part (4).

5. The package bag beating mechanism according to claim 1, wherein The transmission assembly (3) comprises a swing rod (31), a first connecting rod (32) and a second connecting rod (33). The swing rod (31) is rotatably arranged between the first beating part (4) and the second beating part (5). One end of the first connecting rod (32) is hingedly connected with one end of the swing rod (31), and the other end is fixedly connected with the first beating part (4). One end of the second connecting rod (33) is hingedly connected with the other end of the swing rod (31), and the other end is fixedly connected with the second beating part (5).

6. The package bag beating mechanism according to claim 5, wherein The transmission assembly (3) further comprises a mounting shaft (34) and a connecting shaft (35). The mounting shaft (34) is arranged in the middle of the first beating part (4) and the second beating part (5); The swing rod (31) is sleeved on the mounting shaft (34); The connecting shaft (35) is symmetrically arranged on the swing rod (31); The first connecting rod (32) and the second connecting rod (33) are respectively sleeved on the connecting shaft (35).

7. The packaging bag beating mechanism according to claim 2, wherein the linear slide rail (6) comprises a linear track (61) and a sliding block (62); The sliding block (62) is slidably arranged on the linear track (61); The first mounting plate (41) is fixedly connected with the sliding block (62). Further comprising a hand shaker (7); 8. The packaging bag slapping mechanism according to claim 2, characterized by The hand shaker (7) is arranged on the second mounting plate (42) and used for adjusting the distance between the beaters (44).

9. The packaging bag beating mechanism according to claim 8, wherein the hand shaker (7) comprises a handle (71) and a lead screw (72); The lead screw (72) is connected with the second mounting plate (42); and the handle (71) is connected with the lead screw (72). The packaging bag beating mechanism according to any one of claims 1-9. ​ 10. A packaging machine characterized in that, ​