Winding packaging device

Abstract

The utility model relates to the technical field of packaging equipment, and provides a winding packaging device which comprises a packaging device body, the packaging device body is provided with a through hole, the inner side wall of the through hole is rotationally connected with a packaging roller, the packaging roller is detachably connected with a film roll, and the packaging roller conducts winding packaging by rotating the film roll; the first assembly line is arranged at one end of the through hole; the second assembly line is arranged at the other end of the through hole; the conveying face of the first assembly line is flush with the conveying face of the second assembly line, and the first assembly line and the second assembly line conduct conveying in the first direction. At least one end of the two ends of the through hole is provided with a film feeding and discharging device which has a clamping state for clamping the packaging film and an unfolding state for releasing the packaging film. The upper film clamp and the lower film clamp are used for assisting the packaging roller in performing film feeding and film discharging operation on a product, the film can be automatically cut after the product is coated with the film, and the next product can be automatically coated with the film for packaging without manual assistance. The packaging efficiency is effectively improved; the labor cost is reduced.

Description

[0001] This application claims the priority of the prior application number: 202323367570.8 and the filing date: December 8, 2023. Technical Field

[0002] The present application relates to the technical field of packaging equipment, and in particular to a wrapping packaging device. Background Art

[0003] The wrapping machine is an automated packaging device that quickly wraps a single or a group of goods with stretch film through mechanical rotation and electrical automation control. This packaging method can effectively protect the product, improve packaging efficiency, and increase the shelf life of the product. The wrapping machine can reduce packaging costs, facilitate storage and transportation, and easily recycle packaging materials, reducing environmental pollution.

[0004] However, the wrapping tape packaging devices currently on the market, especially the roller-type wrapping tape packaging devices, usually require manual assistance to wrap the packaging film on the product and fix it before starting to rotate and wrap the film; when wrapping is completed, manual film cutting is required to separate the product from the packaging film on the equipment. This type of wrapping tape packaging device has low packaging efficiency and cannot meet the requirements of today's high-efficiency assembly lines. In addition, it also requires one or two dedicated staff members to assist, which is costly.

[0005] Therefore, the above-mentioned technical defects need to be changed urgently. Utility Model Content

[0006] In view of the above-mentioned deficiencies in the prior art, the purpose of the present application is to provide a wrapping packaging device, aiming to improve product packaging efficiency and reduce labor costs.

[0007] A technical solution adopted by the present application to solve the technical problem is as follows: a wrapping packaging device, comprising: a packaging device body, the packaging device body is provided with a through hole, the inner side wall of the through hole is rotatably connected to a packaging roller, the packaging roller is detachably connected to a film roll, and the packaging roller wraps the film roll by rotating the film roll;

[0008] A first assembly line, the first assembly line is arranged at one end of the through hole;

[0009] and a second assembly line, the second assembly line being disposed at the other end of the through hole;

[0010] Among them, the transport surface of the first assembly line is flush with the transport surface of the second assembly line, and the first assembly line and the second assembly line are transported along the first direction; at least one end of the two ends of the through hole is provided with an upper and lower film device, and the upper and lower film device has a clamping state for clamping the packaging film, and an unfolding state for releasing the packaging film.

[0011] The present application is further configured such that the upper and lower film devices include an upper film clamp and a lower film clamp, and the upper film clamp and the lower film clamp are arranged at any one end of the two ends of the through hole; when the upper and lower film devices are in a clamping state, the upper film clamp and the lower film clamp clamp each other to clamp the packaging film, and the extension direction of the two is parallel to the axial direction of the through hole; when the upper and lower film devices are in an expanded state, the upper film clamp and the lower film clamp are separated, and the two are respectively rotated to the ports of the through hole.

[0012] The present application is further configured that the upper film clamp comprises:

[0013] A mounting base, which is arranged at any end of the two ports of the through hole;

[0014] A first rotating shaft, the first rotating shaft is arranged at the upper end of the mounting base;

[0015] and an upper clamping rod, the upper clamping rod being arranged on the first rotating shaft;

[0016] Wherein, the first rotating shaft is used to drive the upper clamping rod. When the upper and lower membrane devices are in the unfolded state, the upper clamping rod is rotated and moved to the end of the through hole through the first rotating shaft;

[0017] The lower membrane clamp includes:

[0018] A second rotating shaft, the second rotating shaft is arranged at the lower end of the mounting base;

[0019] and a lower clamping rod, the lower clamping rod being arranged on the second rotating shaft;

[0020] The second rotating shaft is used to drive the lower clamping rod. When the upper and lower membrane devices are in the unfolded state, the lower clamping rod is rotated and moved to the end of the through hole through the second rotating shaft.

[0021] The present application is further configured such that when the upper clamping rod and the lower clamping rod clamp each other, the contact surface of at least one of the upper clamping rod and the lower clamping rod is configured as an anti-slip rubber portion.

[0022] The present application is further configured such that at least one of the upper clamping rod and the lower clamping rod is provided with a plurality of insertion plugs, and the insertion plugs are arranged along the axis direction of the through hole.

[0023] The present application is further configured such that either the upper clamping rod or the lower clamping rod is provided with a cutting assembly, and the cutting assembly is used for cutting the packaging film.

[0024] The present application is further configured that the cutting assembly comprises:

[0025] A slide groove is provided on the upper clamping rod or the lower clamping rod, and the extending direction of the slide groove is the same as the extending direction of the upper clamping rod or the lower clamping rod;

[0026] A slide rail, the slide rail is arranged in the slide groove;

[0027] A lead screw, the lead screw being arranged in the slide groove;

[0028] A driving member, wherein an output shaft of the driving member is connected to the lead screw;

[0029] A slider is slidably connected to the slide rail and meshes with the lead screw. The slider slides along the slide rail as the lead screw rotates;

[0030] And a cutting blade, which is arranged on the slide block and is used for cutting the packaging film.

[0031] The present application is further configured that a control device and a trigger device are also provided on the packaging device body, the trigger device is provided on one end of the through hole close to the first assembly line, and the trigger device is used to trigger the upper and lower film devices.

[0032] The present application is further configured that the triggering device includes:

[0033] A rocker, the rocker is rotatably connected to one end of the through hole close to the first assembly line, the extension direction of the rocker is perpendicular to the axial direction of the through hole, the extension direction of the rocker is parallel to the transport surface of the first assembly line, and the position of the rocker is lower than the transport surface of the first assembly line;

[0034] A baffle, the baffle is arranged on the rocker, and a reset member is arranged on the rocker;

[0035] and a trigger switch component, the trigger switch component is arranged on the rocker, the trigger switch component is used to detect the opening and closing of the baffle, and the trigger switch component is electrically connected to the control device;

[0036] The reset member and the baffle are newly symmetrically arranged with the rocker as the axis, and the reset member is in the shape of a pendulum, so that the baffle stands upright on the rocker in a normal state.

[0037] Compared with the prior art, the present application provides a wrapping packaging device, which uses an upper film clamp and a lower film clamp to clamp the ends of the packaging film on the film roll to unfold the packaging film. When the product reaches the packaging area, the packaging roller rolls about half a circle to cover the packaging film on the product, and then the upper film clamp and the lower film clamp release the packaging film, so that the packaging roller continues to roll and package; after the packaging is completed, the upper film clamp and the lower film clamp clamp and re-clamp the packaging film and cut it, and the next product can be automatically filmed and packaged without manual assistance. In this way, the functions of automatic film application and film cutting are realized without manual assistance, which effectively improves product packaging efficiency and reduces labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 is a schematic diagram of the overall structure of a wrapping packaging device provided in this embodiment;

[0040] Figure 2 This is another overall structural schematic diagram of a wrapping packaging device provided in this embodiment;

[0041] Figure 3 yes Figure 1 An enlarged schematic diagram of the part marked A;

[0042] Figure 4 : is a schematic diagram of the overall structure of the upper and lower film devices of a wrapping packaging device provided in this embodiment;

[0043] Figure 5 is an exploded schematic diagram of an upper and lower film device of a wrapping packaging device provided in this embodiment;

[0044] Figure 6 is a schematic diagram of the overall structure of a lower film clamp of a wrapping packaging device provided in this embodiment;

[0045] Figure 7 It is a schematic diagram of the overall structure of a trigger device of a wrapping packaging device provided in this embodiment.

[0046] In the figure: 1. packaging device body; 11. through hole; 12. packaging roller; 13. film roll; 14. upper and lower film devices; 141. upper film clamp; 1411. mounting base; 1412. first rotating shaft; 1413. upper clamping rod; 142. lower film clamp; 1421. second rotating shaft; 1422. lower clamping rod; 1423. anti-slip rubber part; 1424. insertion plug; 143. cutting assembly; 1431. slide groove; 1432. slide rail; 1433. lead screw; 1434. driving member; 1435. slider; 1436. cutting blade; 15. control device; 16. trigger device; 161. rocker; 1611. reset member; 162. baffle; 163. trigger switch member; 2. first assembly line; 3. second assembly line. DETAILED DESCRIPTION

[0047] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0048] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more.

[0049] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0050] In addition, the technical features involved in the different embodiments of the present invention described above can be combined with each other as long as they do not conflict with each other.

[0051] The utility model provides Figures 1 to 7 As shown, a wrapping packaging device is used to wrap the surface of a product with a packaging film, which can effectively protect the product and increase the shelf life of the product. The main structure includes: a packaging device body 1, a first assembly line 2 and a second assembly line 3. The packaging device body 1 is provided with a through hole 11, and a packaging roller 12 is rotatably connected to the inner side wall of the through hole 11. A film roll 13 is detachably connected to the packaging roller 12. The packaging roller 12 wraps the packaging by rotating the film roll 13. The first assembly line 2 is arranged at one end of the through hole 11, and the second assembly line 3 is arranged at the other end of the through hole 11.

[0052] The transport surface of the first assembly line 2 is flush with the transport surface of the second assembly line 3, and the first assembly line 2 and the second assembly line 3 are connected along the first direction (the first direction is Figure 1 At least one end of the through hole 11 is provided with an upper and lower film device 14, and the upper and lower film device 14 has a clamping state for clamping the packaging film and an unfolding state for releasing the packaging film.

[0053] It should be noted that the wrapping tape packaging devices currently on the market, especially the roller-type wrapping tape packaging devices, usually require manual assistance to wrap the packaging film on the product and fix it before starting to rotate and wrap the film; when wrapping is completed, manual film cutting is required to separate the product from the packaging film on the equipment. This type of wrapping tape packaging device has low packaging efficiency and cannot meet the requirements of today's high-efficiency assembly lines. It also requires one or two staff members to assist, which is costly.

[0054] The present application solution uses the upper film clamp 141 and the lower film clamp 142 to clamp the end of the packaging film on the film roll 13 so that the packaging film is unfolded. When the product arrives at the packaging area, the packaging drum 12 rolls about half a circle to cover the packaging film on the product. At this time, the end of the packaging film is connected to the product, and there is no need for the upper film clamp 141 and the lower film clamp 142 to fix the packaging film. Therefore, it is necessary to retract the upper film clamp 141 and the lower film clamp 142 and retract them to the port of the packaging drum 12 to prevent the upper film clamp 141 and the lower film clamp 142 from contacting the packaging film and interfering with the packaging film covering the product. The packaging drum 12 continues to roll, and the product slowly passes through the through hole 11 of the packaging drum 12 under the drive of the assembly line until the packaging film completely covers the surface of the product. At this time, the packaging roller 12 completes the rolling packaging action and rotates to a specific interval, so that the upper film clamp 141 and the lower film clamp 142 can clamp the packaging film again and cut the packaging film through the cutting assembly 143 on the upper film clamp 141 or the lower film clamp 142, so that the packaging film is disconnected from the product. The packaged product is slowly sent out of the packaging through hole 11 by the assembly line until the next product packaging area enters the above-mentioned cycle. The present application scheme uses the structural design of the upper and lower film devices 14 to automatically apply film to the next product for packaging without manual assistance. In this way, the functions of automatic film application and film cutting can be achieved without manual assistance, which effectively improves packaging efficiency and reduces labor costs. The fully automatic design will also have higher production efficiency.

[0055] Further, such as Figure 1 , Figure 2 and Figure 3As shown, the upper and lower film devices 14 include an upper film clamp 141 and a lower film clamp 142, and the upper film clamp 141 and the lower film clamp 142 are arranged at any one end of the two ends of the through hole 11; when the upper and lower film devices 14 are in a clamping state, the upper film clamp 141 and the lower film clamp 142 clamp each other to clamp the packaging film, and the extension direction of the two is parallel to the axial direction of the through hole 11, wherein the upper film clamp 141 is used to press the upper end of the packaging film; the lower film clamp 142 is used to press the lower end of the packaging film, and the upper film clamp 141 and the lower film clamp 142 are tightly closed to each other in the clamping state to form a clamping structure. In some other embodiments, the extension direction of the upper film clamp 141 and the lower film clamp 142 are different from the axial direction of the through hole 11, as long as the packaging film can be clamped and fixed and the packaging film can be unfolded; when the upper and lower film devices 14 are in the unfolded state, the upper film clamp 141 and the lower film clamp 142 are separated, and the two are respectively rotated to the ends of the through hole 11, so as to avoid the upper film clamp 141 and the lower film clamp 142 from touching the packaging film, resulting in the packaging film being unable to completely and tightly wrap the surface of the product.

[0056] Further, such as Figure 4 and Figure 5 As shown, the upper film clamp 141 includes: a mounting base 1411, a first rotating shaft 1412 and an upper clamping rod 1413. The mounting base 1411 is arranged at any end of the two ports of the through hole 11, the first rotating shaft 1412 is arranged at the upper end of the mounting base 1411, and the upper clamping rod 1413 is arranged on the first rotating shaft 1412. The first rotating shaft 1412 is used to rotate the upper clamping rod 1413 so that the upper clamping rod 1413 can switch back and forth between a clamping state and an unfolded state; wherein the first rotating shaft 1412 is used to drive the upper clamping rod 1413, and when the upper and lower film devices 14 are in the unfolded state, the upper clamping rod 1413 is rotated and moved to the port of the through hole 11 through the first rotating shaft 1412.

[0057] Further, such as Figure 4 and Figure 5 As shown, the lower film clamp 142 includes: a second rotating shaft 1421 and a lower clamping rod 1422, the second rotating shaft 1421 is arranged at the lower end of the mounting base 1411, the lower clamping rod 1422 is arranged on the second rotating shaft 1421, and the second rotating shaft 1421 is used to rotate the lower clamping rod 1422 so that the lower clamping rod 1422 can switch back and forth between a clamping state and an unfolded state; wherein, the second rotating shaft 1421 is used to drive the lower clamping rod 1422, and when the upper and lower film devices 14 are in the unfolded state, the lower clamping rod 1422 is rotated and moved to the port of the through hole 11 through the second rotating shaft 1421.

[0058] Further, such as Figure 4 and Figure 5As shown, when the upper clamping rod 1413 and the lower clamping rod 1422 are clamped together, the contact surface of at least one of the upper clamping rod 1413 and the lower clamping rod 1422 is configured as an anti-skid rubber part 1423. It can be understood that the anti-skid rubber has an anti-skid effect, and the friction between the anti-skid rubber part 1423 and the packaging film support is relatively large. Therefore, if the contact surface of either or both of the upper clamping rod 1413 and the lower clamping rod 1422 is configured as the anti-skid rubber part 1423, the upper clamping rod 1413 and the lower clamping rod 1422 can better clamp the packaging film, preventing the packaging film from sliding or even falling off between the clamping rod.

[0059] Further, such as Figure 4 and Figure 5 As shown, at least one of the upper clamping rod 1413 and the lower clamping rod 1422 is provided with a plurality of insertion plugs 1424, and the insertion plugs 1424 are arranged along the axis direction of the through hole 11. The insertion plugs 1424 are used to insert the packaging film, and when the upper clamping rod 1413 and the lower clamping rod 1422 are in a clamping state, the insertion plugs 1424 arranged on the clamping surface of the upper clamping rod 1413 or the lower clamping rod 1422 directly penetrate the packaging film, so as to further clamp and fix the packaging film to prevent the packaging film from slipping or falling off.

[0060] Further, such as Figure 4 , Figure 5 and Figure 6 As shown, a cutting assembly 143 is provided on either the upper clamping rod 1413 or the lower clamping rod 1422, and the cutting assembly 143 is used to cut the packaging film.

[0061] Specifically, when the packaging drum 12 completes the rolling packaging action and rotates to a specific interval, the upper film clamp 141 and the lower film clamp 142 can clamp the packaging film again and the packaging film is cut by the cutting assembly 143 on the upper film clamp 141 or the lower film clamp 142, so that the packaging film is disconnected from the product. The packaged product is slowly sent out of the packaging through hole 11 by the assembly line until the next product packaging area enters the above-mentioned cycle work.

[0062] Further, such as Figure 6As shown, the cutting assembly 143 includes: a slide groove 1431, a slide rail 1432, a lead screw 1433, a driving member 1434, a slider 1435 and a cutting blade 1436. The slide groove 1431 is opened on the upper clamping rod 1413 or the lower clamping rod 1422, and the extension direction of the slide groove 1431 is the same as the extension direction of the upper clamping rod 1413 or the lower clamping rod 1422. The slide rail 1432 is arranged in the slide groove 1431, and the lead screw 1433 is arranged in the slide groove 1431, wherein the lead screw 1433 is rotatably connected in the slide groove 1431; the output shaft of the driving member 1434 is connected to the lead screw 1433, the slider 1435 is slidably connected to the slide rail 1432, and the slider 1435 is engaged with the lead screw 1433. The slider 1435 slides along the slide rail 1432 as the lead screw 1433 rotates. The cutting blade 1436 is disposed on the slider 1435. The cutting blade 1436 is used to cut the packaging film, so the cutting blade 1436 extends along the direction of the clamped packaging film.

[0063] It should be noted that the driving member 1434 drives the lead screw 1433 to rotate in the slide groove 1431. Since the slider 1435 is engaged with the lead screw 1433, the rotation of the lead screw will drive the slider 1435 to move on the slide rail 1432, thereby driving the cutting blade 1436 on the slider 1435 to cut the packaging film along the extension direction of the upper clamping rod 1413 or the lower clamping rod 1422.

[0064] Further, such as Figure 1 , Figure 2 and Figure 7 As shown, a control device 15 and a trigger device 16 are also provided on the packaging device body 1 . The trigger device 16 is provided on one end of the through hole 11 close to the first assembly line 2 . The trigger device 16 is used to trigger the upper and lower film devices 14 .

[0065] Specifically, when the product is moved to the end of the through hole 11 by the assembly line, since the trigger device 16 is arranged on the through hole 11 at one end close to the first assembly line 2, the product will be detected by the trigger device 16, thereby triggering the packaging roller 12 to start the film wrapping action.

[0066] Further, such as Figure 7As shown, the trigger device 16 includes: a rocker 161, a baffle 162 and a trigger switch 163. The rocker 161 is rotatably connected to one end of the through hole 11 close to the first assembly line 2. The extension direction of the rocker 161 is perpendicular to the axial direction of the through hole 11, and the extension direction of the rocker 161 is parallel to the transport surface of the first assembly line 2. The position of the rocker 161 is lower than the transport surface of the first assembly line 2. The baffle 162 is arranged on the rocker 161. A reset member 1611 is arranged on the rocker 161. The trigger switch 163 is arranged on the rocker 161. The trigger switch 163 is used to detect the opening and closing of the baffle 162. The trigger switch 163 is electrically connected to the control device 15; wherein the reset member 1611 and the baffle 162 are symmetrically arranged with the rocker 161 as the axis, and the reset member 1611 is in the shape of a pendulum. The reset member 1611 relies on the downward action of gravity to make the baffle 162 stand upright on the rocker 161 under normal conditions.

[0067] In this embodiment, the trigger device 16 is configured as a baffle 162-type structure. When the product is moved to the end of the through hole 11 by the assembly line, since the baffle 162 is arranged on the through hole 11 at one end close to the first assembly line 2, and the baffle 162 is normally upright on the rocker 161, the product will touch and shake the baffle 162 on the rocker 161, and the trigger switch 163 arranged on the rocker 161 will send a detection signal to the control device 15, thereby triggering the packaging roller 12 to start the film wrapping action.

[0068] In summary, the present application provides a wrapping packaging device, and the present application solution clamps the ends of the packaging film on the film roll 13 by the upper film clamp 141 and the lower film clamp 142 to unfold the packaging film. When the product arrives at the packaging area, the packaging roller 12 rolls about half a circle to cover the packaging film on the product, and then the upper film clamp 141 and the lower film clamp 142 release the packaging film, so that the packaging roller 12 continues to roll and package; after the packaging is completed, the upper film clamp 141 and the lower film clamp 142 clamp and re-clamp the packaging film and cut it, and the next product can be automatically filmed and packaged without manual assistance. In this way, the functions of automatic film application and film cutting are realized without manual assistance, which effectively improves packaging efficiency and reduces labor costs.

[0069] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A wrapping packaging device, characterized in that: include: A packaging device body, wherein the packaging device body is provided with a through hole, an inner side wall of the through hole is rotatably connected to a packaging roller, a film roll is detachably connected to the packaging roller, and the packaging roller wraps the film roll by rotating it; a first assembly line, the first assembly line being arranged at one end of the through hole; and a second assembly line, the second assembly line being disposed at the other end of the through hole; Among them, the transport surface of the first assembly line is flush with the transport surface of the second assembly line, and the first assembly line and the second assembly line are transported along a first direction; at least one end of the two ends of the through hole is provided with an upper and lower film device, and the upper and lower film device has a clamping state for clamping the packaging film, and an unfolding state for releasing the packaging film.

2. A wrapping packaging device according to claim 1, characterized in that: The upper and lower film devices include an upper film clamp and a lower film clamp, and the upper film clamp and the lower film clamp are arranged at any one of the two ends of the through hole; when the upper and lower film devices are in a clamping state, the upper film clamp and the lower film clamp clamp each other to clamp the packaging film, and the extension direction of the two is parallel to the axial direction of the through hole; when the upper and lower film devices are in an unfolded state, the upper film clamp and the lower film clamp are separated, and the two are respectively rotated to the ports of the through hole.

3. A wrapping packaging device according to claim 2, characterized in that: The upper film clamp comprises: A mounting base, the mounting base being arranged at any one end of the two ports of the through hole; a first rotating shaft, the first rotating shaft being arranged at an upper end of the mounting base; and an upper clamping rod, wherein the upper clamping rod is arranged on the first rotating shaft; Wherein, the first rotating shaft is used to drive the upper clamping rod, and when the upper and lower membrane devices are in the unfolded state, the upper clamping rod is rotated and moved to the end of the through hole through the first rotating shaft; The lower membrane clamp comprises: a second rotating shaft, the second rotating shaft being arranged at a lower end of the mounting base; and a lower clamping rod, wherein the lower clamping rod is arranged on the second rotating shaft; Wherein, the second rotating shaft is used to drive the lower clamping rod. When the upper and lower membrane devices are in an unfolded state, the lower clamping rod is rotated and moved to the end of the through hole through the second rotating shaft.

4. A wrapping packaging device according to claim 3, characterized in that: When the upper clamp rod and the lower clamp rod clamp each other, the contact surface of at least one of the upper clamp rod and the lower clamp rod is configured as an anti-slip rubber portion.

5. A wrapping packaging device according to claim 4, characterized in that: At least one of the upper clamping rod and the lower clamping rod is provided with a plurality of insertion pieces, and the insertion pieces are arranged along the axis direction of the through hole.

6. A wrapping packaging device according to claim 3, characterized in that: Either one of the upper clamping rod and the lower clamping rod is provided with a cutting assembly, and the cutting assembly is used for cutting the packaging film.

7. A wrapping packaging device according to claim 6, characterized in that: The cutting assembly comprises: A slide groove, wherein the slide groove is provided on the upper clamping rod or the lower clamping rod, and the extension direction of the slide groove is the same as the extension direction of the upper clamping rod or the lower clamping rod; A slide rail, wherein the slide rail is arranged in the slide groove; A lead screw, the lead screw being arranged in the slide groove; A driving member, wherein an output shaft of the driving member is connected to the lead screw; A slider, the slider is slidably connected to the slide rail, and the slider is engaged with the lead screw, and the slider slides along the slide rail as the lead screw rotates; and a cutting blade, wherein the cutting blade is arranged on the sliding block and is used for cutting the packaging film.

8. The wrapping packaging device according to claim 1, characterized in that: The packaging device body is also provided with a control device and a trigger device. The trigger device is arranged on one end of the through hole close to the first assembly line, and the trigger device is used to trigger the upper and lower film devices.

9. A wrapping packaging device according to claim 8, characterized in that: The trigger device comprises: A rocker, the rocker being rotatably connected to one end of the through hole close to the first assembly line, the extension direction of the rocker being perpendicular to the axial direction of the through hole, the extension direction of the rocker being parallel to the transport surface of the first assembly line, and the position of the rocker being lower than the transport surface of the first assembly line; a baffle, the baffle being arranged on the rocker, and the rocker being provided with a reset member; and a trigger switch, the trigger switch being arranged on the rocker, the trigger switch being used to detect the opening and closing of the baffle, the trigger switch being electrically connected to the control device; The reset member and the baffle are symmetrically arranged with the rocker as the axis, and the reset member is in the shape of a pendulum, so that the baffle stands upright on the rocker in a normal state.

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