Packaging box opening and closing mechanism
By incorporating opening claws and closing push handles into the packaging box conveyor line, the problem of the top sliding insert lid being unable to open and close was solved, enabling rapid opening and closing of gift boxes and improving packaging efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGZHOU PENGCHENG PACKAGING MASCH CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-07-31
AI Technical Summary
The existing packaging box opening and closing structure cannot effectively handle the top sliding insert lid, which makes it impossible to open and close the gift box during transportation, affecting product packaging efficiency.
An opening and closing assembly was designed, including an opening claw and a closing push handle. The opening and closing of the lid are achieved by a cylinder drive. The assembly is fixed at the beginning and end of the conveyor, respectively. The opening and closing operation of the top pull-out lid is achieved by the lifting and lateral movement of the opening claw and the closing push handle.
It enables quick opening and closing of the top pull-out lid, improving the product packaging efficiency of the gift box and enhancing the working efficiency and stability of the automatic packaging line.
Smart Images

Figure CN224576921U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of packaging equipment technology, specifically to a box opening and closing mechanism. Background Technology
[0002] On an automated packaging production line, packaging boxes need to be conveyed while the packaging operation is being carried out. Therefore, a packaging box opening and closing structure is used. During the packaging process, the lid of the packaging box is opened and the product is placed into the box.
[0003] A prior art patent with publication number CN204776271U discloses a solution including a main frame, separation plates, suction cups, a negative pressure switch, and a solenoid valve assembly. The main frame is a horizontally arranged metal frame, with multiple separation plates evenly spaced at the lower end. Each separation plate has a suction cup installed at its lower end, and the suction cups are connected to a negative pressure switch installed at the upper end of the main frame via air lines. Each suction cup is connected to a corresponding negative pressure switch. A solenoid valve assembly is installed at the front middle of the main frame, with each solenoid valve corresponding to a negative pressure switch. This utility model uses multiple suction cups in conjunction with a bottom-holding device to separate the gift box lid and bottom, improving work efficiency, saving labor, with a simple structure, stable operation, and effectively improving processing efficiency.
[0004] The shortcomings of existing technology have gradually become apparent with use, mainly in the following aspects:
[0005] With societal progress, gift boxes have evolved to feature top-sliding, insert-type lids. This has rendered existing box-opening structures ineffective during the gift box's transport process, impacting the product packaging efficiency of this type of gift box.
[0006] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content
[0007] In view of the defects in the existing technology, this utility model provides a packaging box opening and closing mechanism to solve the problem that the opening form of the traditional technology has a top sliding insert cover structure, which makes it impossible for the existing opening structure to open and close the box during the transportation of the gift box, thus affecting the product packaging efficiency of this type of gift box.
[0008] To achieve the above objectives, this utility model provides the following technical solution:
[0009] A packaging box opening and closing mechanism includes a conveying body, an opening component fixedly mounted near the beginning of the conveying process, and a closing component fixedly mounted near the end of the conveying process.
[0010] The box-opening assembly includes a box-opening mounting base that slides horizontally in the transverse direction, and a plurality of box-opening claws arranged in parallel along the longitudinal direction that move vertically up and down on the box-opening mounting base.
[0011] The closing box assembly includes a closing box mounting base that slides horizontally in the lateral direction, and a plurality of closing box push handles arranged in parallel in the longitudinal direction are raised and lowered on the closing box mounting base.
[0012] As an optimized solution, the box-opening claw includes a vertically arranged column, and the opposite sidewalls of the column are tapered from top to bottom.
[0013] As an optimized solution, the closing push handle includes a vertically arranged push plate section, and a connecting section is horizontally fixed to the upper end of the push plate section.
[0014] As an optimized solution, the box opening assembly further includes a box opening support frame fixedly connected to the conveying main frame. The box opening support frame is horizontally fixed with a box opening rodless cylinder, and the box opening mounting seat is fixedly connected to the movable end of the box opening rodless cylinder.
[0015] As an optimized solution, the box-opening mounting base is longitudinally mounted with box-opening lifting cylinders, and the box-opening claw is fixedly connected to the telescopic end of the box-opening lifting cylinder.
[0016] As an optimized solution, the closing box assembly further includes a closing box support frame fixedly connected to the conveying main frame, and a closing box rodless cylinder is horizontally fixedly mounted on the closing box support frame. The closing box mounting seat is fixedly connected to the movable end of the closing box rodless cylinder.
[0017] As an optimized solution, a closing box lifting cylinder is fixedly connected in parallel along the longitudinal direction on the closing box mounting base, and the closing box push handle is fixedly connected to the telescopic end of the closing box lifting cylinder.
[0018] Compared with the prior art, the beneficial effects of this utility model are:
[0019] By fixing an opening component near the beginning of the conveying process and a closing component near the end of the conveying process, when the gift box is conveyed on the conveying process body, when it moves to the bottom of the opening component, the opening lifting cylinder drives the opening claw to descend and insert it into the pull hole of the lid. Then the opening rodless cylinder moves laterally to pull the lid horizontally out of the gift box, revealing the top opening of the gift box. Then the opening claw rises and resets.
[0020] After the opening is exposed, the product is placed into the gift box. As the gift box moves above the closing assembly along with the conveyor body, the closing lifting cylinder drives the closing push handle to descend, positioning the push plate section on one side of the lid pull-out end. Then, the closing rodless cylinder moves laterally, and the push plate section pushes the lid horizontally into the box, realizing the closing operation. This is convenient and quick, enabling the opening and closing of the top pull-out lid, thereby improving the product packaging efficiency of this type of gift box. Attached Figure Description
[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0022] Figure 1 This is a schematic diagram of the structure of this utility model;
[0023] Figure 2 This is a three-dimensional structural diagram of the box-opening component of this utility model;
[0024] Figure 3 This is a schematic diagram of the structure of the box-opening component of this utility model;
[0025] Figure 4 This is a three-dimensional structural diagram of the closing box assembly of this utility model;
[0026] Figure 5 This is a structural schematic diagram of the closing box assembly of this utility model.
[0027] In the diagram: 1-Conveying body; 2-Opening assembly; 3-Closing assembly; 4-Opening support frame; 5-Opening rodless cylinder; 6-Opening mounting base; 7-Opening lifting cylinder; 8-Opening claw; 9-Closing rodless cylinder; 10-Closing mounting base; 11-Closing lifting cylinder; 12-Closing push handle; 13-Closing support frame. Detailed Implementation
[0028] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.
[0029] like Figures 1 to 3 As shown, the packaging box opening and closing mechanism includes a conveying body 1, an opening component 2 fixedly mounted near the beginning of the conveying process, and a closing component 3 fixedly mounted near the end of the conveying process.
[0030] The box opening assembly 2 includes a box opening mounting base 6 that slides horizontally in the transverse direction, and a plurality of box opening claws 8 arranged in parallel along the longitudinal direction on the box opening mounting base 6, which move vertically upwards and downwards.
[0031] The closing box assembly 3 includes a closing box mounting base 10 that slides horizontally in the transverse direction, and a number of closing box push handles 12 arranged in parallel in the longitudinal direction on the closing box mounting base 10 that move vertically.
[0032] The box-opening claw 8 includes a vertically arranged column, and the opposite side walls of the column are tapered from top to bottom.
[0033] The closing push handle 12 includes a vertically arranged push plate section, and a connecting section is horizontally fixed to the upper end of the push plate section.
[0034] The box opening assembly 2 also includes a box opening support frame 4 fixed to the frame of the conveying body 1. The box opening support frame 4 is horizontally fixed with a box opening rodless cylinder 5, and the box opening mounting seat 6 is fixed to the movable end of the box opening rodless cylinder 5.
[0035] An opening and lifting cylinder 7 is fixedly connected in parallel along the longitudinal direction on the box-opening mounting base 6, and the opening claw 8 is fixedly connected to the telescopic end of the opening and lifting cylinder 7.
[0036] The closing box assembly 3 also includes a closing box support frame 13 fixed to the frame of the conveying body 1. The closing box support frame 13 is horizontally fixed with a closing box rodless cylinder 9, and the closing box mounting seat 10 is fixed to the movable end of the closing box rodless cylinder 9.
[0037] A box-closing lifting cylinder 11 is fixedly connected in parallel along the longitudinal direction on the box-closing mounting base 10, and a box-closing push handle 12 is fixedly connected to the extension end of the box-closing lifting cylinder 11.
[0038] The working principle of this device is as follows:
[0039] By fixing an opening component 2 near the beginning of the conveying process and a closing component 3 near the end of the conveying process on the conveying body 1, when the gift box is conveyed on the conveying body 1 and moves to the area below the opening component 2, the opening lifting cylinder 7 drives the opening claw 8 to descend and insert it into the pull hole of the lid. Then the opening rodless cylinder 5 moves laterally to pull the lid horizontally out of the gift box, revealing the top opening of the gift box. Then the opening claw 8 rises and resets.
[0040] After the opening is exposed, the product is placed into the gift box. When the gift box moves above the closing assembly 3 along with the conveyor body 1, the closing lifting cylinder 11 drives the closing push handle 12 to descend, positioning the push plate section on one side of the lid pull-out end. Then, the closing rodless cylinder 9 moves laterally, and the push plate section pushes the lid horizontally into the box, realizing the closing operation. This is convenient and quick, enabling the opening and closing of the top pull-out lid, thereby improving the product packaging efficiency of this type of gift box.
[0041] 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 the 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 or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.
Claims
1. A box opening and closing mechanism, characterized in that: The system includes a conveying body (1), an opening assembly (2) fixedly mounted near the beginning of the conveying process, and a closing assembly (3) fixedly mounted near the end of the conveying process. The box-opening assembly (2) includes a box-opening mounting base (6) that slides horizontally in the transverse direction, and a plurality of box-opening claws (8) arranged in parallel along the longitudinal direction on the box-opening mounting base (6). The closing box assembly (3) includes a closing box mounting base (10) that slides horizontally in the transverse direction, and a plurality of closing box push handles (12) that are arranged in parallel in the longitudinal direction are raised and lowered on the closing box mounting base (10).
2. The packaging box opening and closing mechanism according to claim 1, characterized in that: The box-opening claw (8) includes a vertically arranged column, and the opposite sidewalls of the column are gradually tapered from top to bottom.
3. The packaging box opening and closing mechanism according to claim 1, characterized in that: The closing push handle (12) includes a vertically arranged push plate section, and a connecting section is horizontally fixed to the upper end of the push plate section.
4. The packaging box opening and closing mechanism according to claim 1, characterized in that: The box opening assembly (2) further includes a box opening support frame (4) fixedly connected to the frame of the conveying body (1). The box opening support frame (4) is horizontally fixed with a box opening rodless cylinder (5). The box opening mounting seat (6) is fixedly connected to the movable end of the box opening rodless cylinder (5).
5. The packaging box opening and closing mechanism according to claim 1, characterized in that: The box-opening mounting base (6) is longitudinally and parallelly fixed with box-opening lifting cylinders (7), and the box-opening claws (8) are fixedly connected to the telescopic end of the box-opening lifting cylinders (7).
6. The packaging box opening and closing mechanism according to claim 1, characterized in that: The closing box assembly (3) further includes a closing box support frame (13) fixed to the frame of the conveying body (1). The closing box support frame (13) is horizontally fixed with a closing box rodless cylinder (9). The closing box mounting seat (10) is fixed to the movable end of the closing box rodless cylinder (9).
7. The packaging box opening and closing mechanism according to claim 1, characterized in that: The closing box mounting base (10) is longitudinally and parallelly fixed with closing box lifting cylinders (11), and the closing box push handle (12) is fixedly connected to the extension end of the closing box lifting cylinder (11).