Packaging box gasket correcting device

By using a straightening mechanism and a pusher plate to straighten the position of the pads in the packaging box pad straightening device, the problem of milk cartons being unable to be packed due to misaligned pads is solved, achieving neat arrangement of pads and saving production costs.

CN224376113UActive Publication Date: 2026-06-19INNER MONGOLIA MENGNIU DAIRY IND (GROUP) CO LTD +1

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
INNER MONGOLIA MENGNIU DAIRY IND (GROUP) CO LTD
Filing Date
2025-06-11
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

In dairy production, improper placement of the padding inside the packaging box can prevent milk cartons from being accurately placed into the box, resulting in waste.

Method used

A packaging box gasket straightening device is designed, including a straightening mechanism and a push plate. The gasket inside the packaging box is straightened by a first straightening component and a second straightening component to ensure that the gasket fits against the side wall of the packaging box.

Benefits of technology

Ensure the gaskets are neatly arranged before packing to avoid milk bag loss, reduce production costs, and make installation easy and cost-effective.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224376113U_ABST
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Abstract

This utility model relates to the field of packaging machinery technology, and provides a packaging box pad straightening device, including: a mounting frame and a straightening mechanism; the straightening mechanism includes at least one of a first straightening component and a second straightening component; both the first and second straightening components include a movable seat and a straightening unit, the straightening unit includes a first driving member and a push plate, the movable seat is vertically mounted on the mounting frame, and the first driving member is mounted on the movable seat, wherein the two push plates of the straightening unit of the first straightening component are connected to the corresponding first driving member, so that the two push plates move closer or further apart, and one push plate of the straightening unit of the second straightening component is connected to the corresponding first driving member. This packaging box pad straightening device ensures the smooth packing of milk cartons and avoids product loss.
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Description

Technical Field

[0001] This utility model relates to the field of packaging machinery technology, and in particular to a packaging box gasket straightening device. Background Technology

[0002] In the dairy production process, before packaging milk into cartons, padding sheets must be inserted into the cartons. If the padding sheets are not positioned correctly, the robotic arm will be unable to accurately deliver the milk carton during packaging, potentially causing damage or incomplete placement of the milk carton, resulting in the waste of the milk that is not properly packaged. Utility Model Content

[0003] This utility model provides a packaging box pad straightening device to solve the problem in the prior art where improper placement of the pads inside the packaging box causes milk cartons to be unable to be accurately placed into the box, resulting in the waste of milk cartons.

[0004] This utility model provides a packaging box gasket straightening device, comprising:

[0005] Mounting rack;

[0006] The correction mechanism includes at least one of a first correction component and a second correction component; both the first correction component and the second correction component include a movable base and a correction unit, the correction unit includes a first driving member and a push plate, the movable base is vertically mounted on the mounting frame, the first driving member is mounted on the movable base, wherein both push plates of the correction unit of the first correction component are connected to the corresponding first driving member so that the two push plates move closer or further apart from each other, and one push plate of the correction unit of the second correction component is connected to the corresponding first driving member.

[0007] According to the present invention, a packaging box pad straightening device is provided, the straightening mechanism includes a first straightening component and a second straightening component. Along the conveying direction of the conveyor belt that conveys the packaging box, the first straightening component is located at the front end of the conveyor belt, and the second straightening component is located at the rear end of the conveyor belt.

[0008] According to the present invention, a packaging box pad straightening device is provided, wherein the straightening unit of the first straightening component includes two first driving members, the two first driving members are stacked along the height direction of the mounting frame, the output ends of the two first driving members are oriented in opposite directions, and the two push plates are respectively disposed at the output ends of the two first driving members.

[0009] According to the present invention, a packaging box pad straightening device is provided, wherein the straightening unit of the first straightening component includes two first driving members, the two first driving members are arranged side by side along the length direction of the mounting frame, the output ends of the two first driving members are oriented in opposite directions, and the two push plates are respectively disposed at the output ends of the two first driving members.

[0010] According to the present invention, a packaging box pad straightening device is provided, wherein the second straightening component includes a plurality of straightening units, the plurality of straightening units being spaced apart on the movable seat and arranged along the length direction of the movable seat.

[0011] According to the present invention, in a packaging box pad straightening device, along the length direction of the movable seat, the output ends of the plurality of first driving members corresponding to the plurality of straightening units of the second straightening component have the same orientation.

[0012] According to the packaging box pad straightening device provided by this utility model, the first straightening component and the second straightening component further include a second driving component;

[0013] The second drive unit is mounted on the mounting frame, and the output end of the second drive unit is connected to the corresponding movable seat to drive the movable seat to move vertically along the mounting frame.

[0014] According to the packaging box pad straightening device provided by this utility model, the first straightening component and the second straightening component further include a positioning detection sensor;

[0015] The positioning detection sensor is disposed on the mounting frame, and the positioning detection sensor is used to detect whether the packaging box exists in the area corresponding to the first correction component and the second correction component on the conveyor belt for conveying the packaging box;

[0016] The packaging box pad straightening device further includes a controller, the positioning detection sensor is electrically connected to the controller, and the controller is electrically connected to the first driving component and the second driving component.

[0017] According to the present invention, a packaging box gasket straightening device is provided, wherein the first driving member and the second driving member include cylinders;

[0018] The first correction component and the second correction component also include a solenoid valve and a time delay relay;

[0019] Each of the second driving components is electrically connected to the controller via a corresponding solenoid valve, and each of the first driving components is sequentially electrically connected to the controller via a corresponding solenoid valve and a time delay relay.

[0020] According to the present invention, a packaging box pad straightening device is provided, wherein the push plate is provided with a buffer pad on the side facing the inner wall of the packaging box.

[0021] The packaging box pad straightening device provided by this utility model, by setting at least one of a first straightening component and a second straightening component on a conveyor belt, and both the first and second straightening components include a movable seat and a straightening unit, the movable seat being vertically and flexibly mounted on a mounting frame, and the straightening unit of the first straightening component including a first driving member and two push plates, the first driving member being able to push the two push plates to straighten the position of the pads on both sides inside the packaging box, and the straightening unit of the second straightening component including a first driving member and a push plate, the first driving member being able to push a push plate to straighten the position of the pads on one side inside the packaging box, for packaging boxes at different positions on the conveyor belt, the first straightening component and / or the second straightening component are used to straighten the pads, so that the pads are neatly arranged before the packaging box enters the boxing machine, ensuring the smooth boxing of milk cartons and avoiding product loss. Furthermore, the packaging box pad straightening device of this utility model has low cost, is easy to install on the conveyor belt, and saves production costs. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the first type of first corrective component provided by this utility model.

[0024] Figure 2 This is a schematic diagram of the second type of first correction component provided by this utility model.

[0025] Figure 3 This is a schematic diagram of the second corrective component provided by this utility model.

[0026] Figure 4 This is one of the schematic diagrams of the correction mechanism provided by this utility model.

[0027] Figure 5 This is the second schematic diagram of the correction mechanism provided by this utility model.

[0028] Figure label:

[0029] 1. Mounting bracket;

[0030] 2. Correctional institutions;

[0031] 21. First correction assembly; 211. Movable seat; 212. Correction unit; 213. Second drive component; 214. Position detection sensor; 215. Solenoid valve; 216. Time delay relay; 2121. First drive component; 2122. Push plate;

[0032] 22. Second corrective component. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of clarifying the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model according to the specific circumstances.

[0036] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0038] The following is combined Figures 1 to 5 The packaging box gasket correction device provided in this utility model will be described in detail through specific embodiments and application scenarios.

[0039] like Figure 1 , Figure 2 and Figure 3 As shown, this embodiment provides a packaging box pad straightening device, including: a mounting frame 1 and a straightening mechanism 2. The straightening mechanism 2 includes at least one of a first straightening component 21 and a second straightening component 22; both the first straightening component 21 and the second straightening component 22 include a movable base 211 and a straightening unit 212. The straightening unit 212 includes a first driving member 2121 and a push plate 2122. The movable base 211 is vertically and flexibly mounted on the mounting frame 1, and the first driving member 2121 is mounted on the movable base 211. The two push plates 2122 of the straightening unit 212 of the first straightening component 21 are connected to the corresponding first driving member 2121, so that the two push plates 2122 move closer to or further away from each other. One push plate 2122 of the straightening unit 212 of the second straightening component 22 is connected to the corresponding first driving member 2121.

[0040] Understandably, in the dairy production process, pads are first inserted into the packaging boxes. These pads are three-dimensional strips, with two pads inserted into each box along its length, located on the inside of the box. The boxes with pads are then conveyed on a conveyor belt to a case packer, which fills the milk carton into the boxes. During the insertion and conveying process, it is possible that the pads may not adhere to the side walls of the box, may shift within the box, or may tip over.

[0041] The packaging box pad straightening device can correct the position of the pads on the packaging boxes on the conveyor belt, so that the pads are pushed to the side wall of the packaging box by the push plate 2122, ensuring the correct position of the pads and preparing for the next step of the cartoning machine to pack the milk bags.

[0042] Mounting frame 1 is located on the upper side of the conveyor belt, and mounting frame 1 provides mounting support for the straightening mechanism 2.

[0043] The first correction component 21 contains two push plates 2122, which can push two pads inside the packaging box. It is usually used when both pads on both sides of the packaging box are misaligned and need to be corrected. The second correction component 22 contains one push plate 2122, which is usually used when only one pad inside the packaging box is misaligned and needs to be corrected.

[0044] Specifically, the correction mechanism 2 may include only the first correction component 21, or only the second correction component 22, or both the first correction component 21 and the second correction component 22, with the first correction component 21 and the second correction component 22 spaced apart on the conveyor belt.

[0045] Furthermore, both the first straightening component 21 and the second straightening component 22 in this embodiment have a movable seat 211, which is located on the upper side of the conveyor belt and can move relative to the mounting frame 1. When a package is conveyed to the area where the first straightening component 21 or the second straightening component 22 is located, the movable seat 211 descends relative to the mounting frame 1 so that the straightening unit 212 is located inside the package for the straightening of the pads. If there are no packaged boxes in the area where the first straightening component 21 or the second straightening component 22 is located, or if the pads inside the package have already been straightened, the movable seat 211 drives the straightening unit 212 or the straightening unit 212 to rise back to the upper side of the conveyor belt.

[0046] Optionally, the lifting and lowering of the movable seat 211 relative to the mounting bracket 1 can be manual, pneumatic, or electric.

[0047] The first correction component 21 in this embodiment includes a movable base 211 and a correction unit 212. The first correction component 21 corrects the pads in one packaging box at a time. The first driving member 2121 is used to drive two push plates 2122 located on both sides of the movable base 211 to move along the length direction of the mounting frame 1. The two push plates 2122 move in opposite directions.

[0048] Specifically, there can be one first driving element 2121, which is connected to two push plates 2122 via a gear and rack transmission, a linkage mechanism, or a double-ended lead screw, thereby driving the push plates 2122 on both sides to move in opposite directions. Alternatively, there can be two first driving elements 2121, each driving a corresponding push plate 2122.

[0049] Meanwhile, the second correction assembly 22 includes a movable seat 211 and one or more correction units 212. Each correction unit 212 includes a push plate 2122 for pushing a pad on one side of the packaging box. When the second correction assembly 22 contains one correction unit 212, the correction unit 212 can correct the pad in one packaging box at a time. When the second correction assembly 22 contains multiple correction units 212, the second correction assembly 22 can simultaneously correct the pads of multiple packaging boxes on the conveyor belt.

[0050] The packaging box pad straightening device provided by this utility model comprises at least one of a first straightening component 21 and a second straightening component 22 arranged on a conveyor belt. Both the first straightening component 21 and the second straightening component 22 include a movable base 211 and a straightening unit 212. The movable base 211 is vertically and flexibly mounted on a mounting frame 1. The straightening unit 212 of the first straightening component 21 includes a first driving member 2121 and two push plates 2122. The first driving member 2121 can push the two push plates 2122 to straighten the position of the pads on both sides inside the packaging box. The straightening unit 212 of the second straightening component 22... The component 212 includes a first driving component 2121 and a pusher plate 2122. The first driving component 2121 can push the pusher plate 2122 to correct the position of the pad on one side of the packaging box. For packaging boxes at different positions on the conveyor belt, the first correction component 21 and / or the second correction component 22 are used to correct the pad, so that the pad is neatly arranged before the packaging box enters the boxing machine, ensuring the smooth boxing of milk bags and avoiding product loss. In addition, the packaging box pad correction device of this utility model has low cost, is easy to install on the conveyor belt, and saves production costs.

[0051] The correction mechanism 2 in this embodiment includes a first correction component 21 and a second correction component 22. Along the conveying direction of the conveyor belt for conveying the packaging box, the first correction component 21 is located at the front end of the conveyor belt, and the second correction component 22 is located at the rear end of the conveyor belt.

[0052] Understandably, between the time the packaging box is conveyed from the padding section to the case packer, at the front end of the conveyor belt, the pads are manually inserted into the packaging box, and the pads on both sides may not be in contact with the side walls of the packaging box. The first correction component 21 is located at the front end of the conveyor belt and can push the pads on both sides inside the packaging box to return to their original positions.

[0053] Furthermore, at the rear end of the conveyor belt, the pads inside the packaging boxes undergo changes in height during their long-term transport by the conveyor belt. Before reaching the case packer, they are tilted and transported by the conveyor belt. One side of the pad is blocked by the box and cannot move, while the other side separates from the box. Only the separated pad needs to be corrected. The second correction component 22, located at the rear end of the conveyor belt, can push the pad on one side of the packaging box back to its original position.

[0054] This embodiment, by simultaneously setting the first correction component 21 and the second correction component 22 on the conveyor belt, can specifically correct and reset the gasket according to different stages of the packaging box's transport on the conveyor belt, ensuring the reliability of the gasket's position within the packaging box.

[0055] like Figure 1 As shown, the first correction component 21 of this embodiment includes two first driving members 2121. The two first driving members 2121 are stacked along the height direction of the mounting frame 1. The output ends of the two first driving members 2121 face opposite directions. Two push plates 2122 are respectively disposed at the output ends of the two first driving members 2121.

[0056] Understandably, this embodiment provides two stacked first driving members 2121, with the output end of each first driving member 2121 connected to a push plate 2122. Since the output ends of the two first driving members 2121 face opposite directions, when both first driving members 2121 are activated, the two push plates 2122 can synchronously move closer or further away within the packaging box to push the pads on both sides of the packaging box back to their original positions. Because only two first driving members 2121 are provided, no additional installation space is required, making the overall structure of the correction unit 212 compact. The stacked arrangement also results in a shorter overall length for the two first driving members 2121, making it suitable for smaller packaging boxes.

[0057] Optionally, the first driving component 2121 can be a linear motor, a cylinder, or an electric push rod.

[0058] like Figure 2As shown, the first correction component 21 of this embodiment includes two first driving members 2121. The two first driving members 2121 are arranged side by side along the length direction of the mounting frame 1. The output ends of the two first driving members 2121 face opposite directions. Two push plates 2122 are respectively disposed at the output ends of the two first driving members 2121.

[0059] Understandably, this embodiment provides two first driving members 2121 arranged side by side, with the output end of each first driving member 2121 connected to a push plate 2122. Since the output ends of the two first driving members 2121 face opposite directions, when both first driving members 2121 are activated, the two push plates 2122 can synchronously move closer or further away within the packaging box to push the pads on both sides of the packaging box back to their original positions. Because only two first driving members 2121 are provided, no additional installation space is required, making the overall structure of the correction unit 212 compact. The side-by-side arrangement allows for a longer length of the two first driving members 2121, making it suitable for larger packaging boxes.

[0060] like Figure 3 As shown, the second correction component 22 in this embodiment includes a plurality of correction units 212, which are spaced apart on the movable seat 211 and arranged along the length of the movable seat 211.

[0061] It is understood that the second correction component 22 in this embodiment includes a plurality of correction units 212, each correction unit 212 being capable of correcting a pad on one side of a packaging box. Therefore, the plurality of correction units 212 can simultaneously correct pads on one side of multiple packaging boxes, improving the efficiency of the pad correction process.

[0062] In one example, this embodiment provides four correction units in the second correction component 22. The four correction units 212 are spaced apart on the movable seat 211 and simultaneously correct one side pads in the four packaging boxes.

[0063] like Figure 3 As shown, in this embodiment, along the length direction of the movable seat 211, the output ends of the multiple first driving members 2121 corresponding to the multiple correction units 212 of the second correction component 22 have the same orientation.

[0064] Understandably, the output end of the first drive unit 2121 faces one side of the packaging box, and the pads on this side of the packaging box are prone to positional shift after being conveyed on the conveyor belt. Since the pads on the same side of multiple packaging boxes need to be corrected, the output ends of multiple first drive units 2121 face the same side to facilitate synchronously pushing the pads to reset.

[0065] like Figure 4 and Figure 5As shown, the first correction component 21 and the second correction component 22 in this embodiment also include a second drive component 213.

[0066] The second drive unit 213 is mounted on the mounting frame 1. The output end of the second drive unit 213 is connected to the corresponding movable seat 211 to drive the movable seat 211 to move vertically along the mounting frame 1.

[0067] Understandably, in order to achieve automatic lifting and lowering of the movable seat 211, this embodiment provides a second driving component 213. The second driving component 213 is electrically connected to the controller, which controls the second driving component 213 to drive the lifting and lowering movement of the movable seat 211. By providing the second driving component 213, this embodiment enables automatic control of the lifting and lowering of the movable seat 211, improving the working efficiency of the correction mechanism 2 and saving manpower.

[0068] Optionally, the second drive unit 213 can be a linear motor, a cylinder, or an electric push rod.

[0069] like Figure 4 and Figure 5 As shown, the first correction component 21 and the second correction component 22 in this embodiment also include a position detection sensor 214.

[0070] The positioning detection sensor 214 is mounted on the mounting frame 1. The positioning detection sensor 214 is used to detect whether there is a packaging box in the area corresponding to the first correction component 21 and the second correction component 22 on the conveyor belt that transports the packaging box.

[0071] The packaging box pad straightening device also includes a controller, a positioning detection sensor 214 is electrically connected to the controller, and the controller is electrically connected to the first drive unit 2121 and the second drive unit 213.

[0072] Understandably, the position detection sensor 214 is used to detect whether a packaged box exists in the area of ​​the conveyor belt corresponding to the correction unit 212. When the position detection sensor 214 detects that a packaged box exists in the corresponding area, the position detection sensor 214 sends a signal to the controller indicating the presence of a packaged box. Based on the received signal, the controller first controls the second drive unit 213 to drive the moving seat 211 to descend, and then controls the first drive unit 2121 to drive the push plate 2122 to perform correction processing on the pads inside the packaged box.

[0073] The positioning sensor 214 in this embodiment can automatically detect whether the packaging box has been delivered to the correct position, eliminating the need for manual observation and saving labor costs.

[0074] Specifically, the position detection sensor 214 can be a photoelectric sensor.

[0075] like Figure 4 and Figure 5 As shown, the first drive member 2121 and the second drive member 213 in this embodiment include cylinders.

[0076] The first correction component 21 and the second correction component 22 also include a solenoid valve 215 and a time delay relay 216.

[0077] Each second drive unit 213 is electrically connected to the controller via a corresponding solenoid valve 215, and each first drive unit 2121 is electrically connected to the controller via a corresponding solenoid valve 215 and a time delay relay 216 in sequence.

[0078] It is understood that in this embodiment, both the first drive component 2121 and the second drive component 213 are cylinders, and each cylinder is equipped with a corresponding solenoid valve 215. The solenoid valve 215 is used to control the air source to adjust the speed and stroke of the corresponding cylinder.

[0079] When the correction mechanism 2 corrects the pad, it needs to lower the movable seat 211 into the packaging box first, and then drive the push plate 2122 to push the pad. Therefore, the second drive member 213 needs to act before the first drive member 2121. In this embodiment, a time delay relay 216 is set to control the action time of the second drive member 213 and the first drive member 2121 to ensure that the first drive member 2121 drives the push plate 2122 after the movable seat 211 is lowered.

[0080] In this embodiment, the push plate 2122 has a cushioning pad on the side facing the inner wall of the packaging box.

[0081] Understandably, in order to buffer the pushing force of the push plate 2122 on the gasket, a buffer pad is adhered to the push plate 2122 in this embodiment. The buffer pad is a flexible part, and the flexible buffer pad can alleviate the pushing force of the push plate 2122, ensuring that the gasket does not deform when pushed by the push plate 2122, which is beneficial to maintaining the shape of the gasket.

[0082] For example, the cushioning pad may be a silicone pad.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A packaging box gasket correcting device characterized by comprising: include: Mounting rack; The correction mechanism includes at least one of a first correction component and a second correction component; both the first correction component and the second correction component include a movable base and a correction unit, the correction unit includes a first driving member and a push plate, the movable base is vertically mounted on the mounting frame, the first driving member is mounted on the movable base, wherein both push plates of the correction unit of the first correction component are connected to the corresponding first driving member so that the two push plates move closer or further apart from each other, and one push plate of the correction unit of the second correction component is connected to the corresponding first driving member.

2. The packaging box gasket straightening device according to claim 1, characterized in that, The correction mechanism includes a first correction component and a second correction component. Along the conveying direction of the conveyor belt that transports the packaging box, the first correction component is located at the front end of the conveyor belt, and the second correction component is located at the rear end of the conveyor belt.

3. The packaging box gasket straightening device according to claim 1, characterized in that, The first correction assembly includes two first driving members, which are stacked along the height direction of the mounting frame. The output ends of the two first driving members face opposite directions, and the two push plates are respectively disposed at the output ends of the two first driving members.

4. The packaging box gasket straightening device according to claim 1, characterized in that, The first correction unit includes two first driving members, which are arranged side by side along the length of the mounting frame. The output ends of the two first driving members face opposite directions, and the two push plates are respectively disposed at the output ends of the two first driving members.

5. The packaging box gasket straightening device according to claim 1, characterized in that, The second correction component includes multiple correction units, which are spaced apart on the movable seat and arranged along the length of the movable seat.

6. The packaging box gasket straightening device according to claim 5, characterized in that, Along the length of the movable seat, the output ends of the plurality of first driving members corresponding to the plurality of correction units of the second correction assembly are oriented in the same direction.

7. The packaging box gasket straightening device according to any one of claims 1 to 6, characterized in that, The first correction component and the second correction component further include a second drive element; The second drive unit is mounted on the mounting frame, and the output end of the second drive unit is connected to the corresponding movable seat to drive the movable seat to move vertically along the mounting frame.

8. The packaging box gasket straightening device according to claim 7, characterized in that, The first correction component and the second correction component also include a position detection sensor; The positioning detection sensor is disposed on the mounting frame, and the positioning detection sensor is used to detect whether the packaging box exists in the area corresponding to the first correction component and the second correction component on the conveyor belt for conveying the packaging box; The packaging box pad straightening device further includes a controller, the positioning detection sensor is electrically connected to the controller, and the controller is electrically connected to the first driving component and the second driving component.

9. The packaging box gasket straightening device according to claim 8, characterized in that, The first driving member and the second driving member include cylinders; The first correction component and the second correction component also include a solenoid valve and a time delay relay; Each of the second driving components is electrically connected to the controller via a corresponding solenoid valve, and each of the first driving components is sequentially electrically connected to the controller via a corresponding solenoid valve and a time delay relay.

10. The packaging box gasket straightening device according to any one of claims 1 to 6, characterized in that, The push plate has a cushioning pad on the side facing the inner wall of the packaging box.