Packaging bag opening mechanism

Abstract

The utility model discloses a packaging bag mouth opening mechanism which comprises a machine frame, a bag opening mechanism and two bag clamping assemblies, the bag opening mechanism comprises a bag supporting assembly and a bag opening assembly which are arranged on the two sides of a packaging bag respectively, and the bag supporting assembly and the bag opening assembly are each provided with a suction cup structure used for sucking the packaging bag. The bag opening assembly is connected to the rack in a sliding mode so that the two side faces of a packaging bag can be separated. The two bag clamping assemblies are arranged adjacent to the bag supporting assembly and the bag opening assembly respectively, and each bag clamping assembly comprises a clamping structure used for clamping the two side faces of the separated packaging bag. According to the technical scheme, the bag opening stability is improved.

Description

Technical Field

[0001] This utility model relates to the field of packaging machine technology, and in particular to a bag opening mechanism for packaging bags. Background Technology

[0002] The bag opening mechanism is a common component in automated packaging production lines, mainly used to open the seal of the packaging bag in order to fill the material.

[0003] Currently, packaging bag opening mechanisms typically use suction cups to adhere to both sides of the sealed packaging bag, stretching or expanding the opening to ensure sufficient space for the filling material. However, the suction force of the suction cups is not stable, and opening the bag solely using suction cups can result in incomplete or unstable opening, affecting processing efficiency. Utility Model Content

[0004] The main purpose of this utility model is to provide a bag opening mechanism for packaging bags, which aims to improve the stability of the bag opening.

[0005] To achieve the above objectives, the packaging bag opening mechanism proposed in this utility model includes:

[0006] frame;

[0007] A bag-opening mechanism, comprising a bag-supporting assembly and a bag-opening assembly respectively disposed on both sides of a packaging bag, wherein both the bag-supporting assembly and the bag-opening assembly are equipped with suction cup structures for adsorbing the packaging bag, and the bag-opening assembly is slidably connected to the frame to separate the two sides of the packaging bag; and

[0008] Two bag clamping assemblies are respectively disposed adjacent to the bag support assembly and the bag opening assembly. Both bag clamping assemblies include a clamping structure for clamping the two sides of the packaging bag after separation.

[0009] In one possible implementation, the bag-opening component further includes:

[0010] Gantry crane, which is vertically mounted on the frame; and

[0011] A lifting structure is fixedly connected to the gantry frame and drives the suction cup structure connected to the bag opening assembly.

[0012] In one possible implementation, the clamping structure includes:

[0013] Fixing plate;

[0014] Mounting plate, the mounting plate being connected to the fixing plate;

[0015] A clamping block, connected to the fixing plate and disposed opposite to the mounting plate, forming a clamping space between them; and

[0016] A cylinder is mounted on the mounting plate, and a clamping block is connected to the end of the piston rod of the cylinder. The cylinder drives the clamping block and the clamping block to close or separate.

[0017] In one possible implementation, the bag clamp assembly further includes:

[0018] Fixture;

[0019] A longitudinal movement assembly, the longitudinal movement assembly being connected to the fixed frame;

[0020] A vertical moving component, which is driven and connected to the longitudinal moving component;

[0021] A lateral moving component is driven and connected to the vertical moving component, and a clamping structure is driven and connected to the lateral moving component.

[0022] In one possible implementation, two clamping structures are provided, and the lateral movement component drives the two clamping structures to move closer to or further away from each other.

[0023] This utility model's technical solution employs a bag-opening mechanism and a bag-clamping assembly mounted on a frame to work together to open the bag. The bag-opening mechanism includes a bag-supporting assembly and a bag-opening assembly respectively positioned on both sides of the packaging bag. Both the bag-supporting assembly and the bag-opening assembly are equipped with suction cup structures. The bag-opening assembly is also slidably connected to the frame. The suction cup structures adsorb the two sides of the packaging bag, and then drive the bag-opening assembly to move, causing the two sides of the packaging bag to separate. Furthermore, bag-clamping assemblies are provided on the sides of both the bag-supporting assembly and the bag-opening assembly. Each bag-clamping assembly is equipped with a clamping structure, which can clamp the two sides of the packaging bag after it has been separated by the bag-supporting assembly and the bag-opening assembly, avoiding incomplete or unstable bag opening caused by insufficient or unstable suction force of the suction cup structure. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of 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 only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of an embodiment of the packaging bag opening mechanism of this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of an embodiment of the bag opening component of this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of an embodiment of the bag-carrying assembly of this utility model;

[0028] Figure 4 This is a schematic diagram of the structure of an embodiment of the bag clamping assembly of this utility model;

[0029] Figure 5 This is a structural schematic diagram from another perspective of an embodiment of the bag clamping assembly of this utility model.

[0030] Explanation of icon numbers:

[0031] 10. Frame; 20. Bag opening mechanism; 21. Bag holding assembly; 22. Bag opening assembly; 221. Gantry frame; 222. Lifting structure; 201. Suction cup structure; 30. Bag clamping assembly; 31. Clamping structure; 311. Fixing plate; 312. Mounting plate; 313. Clamping block; 314. Cylinder; 3141. Pressing block; 32. Fixing frame; 33. Longitudinal movement assembly; 34. Vertical movement assembly; 35. Lateral movement assembly.

[0032] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0034] In response to the problems in the background art, and in conjunction with reference Figures 1 to 5 As shown, the packaging bag opening mechanism proposed in this utility model includes:

[0035] Rack 10;

[0036] A bag-opening mechanism 20 includes a bag-supporting assembly 21 and a bag-opening assembly 22 respectively disposed on both sides of a packaging bag. Both the bag-supporting assembly 21 and the bag-opening assembly 22 are equipped with suction cup structures 201 for adsorbing the packaging bag. The bag-opening assembly 22 is slidably connected to the frame 10 to separate the two sides of the packaging bag.

[0037] Two bag clamping assemblies 30 are respectively disposed adjacent to the bag support assembly 21 and the bag opening assembly 22. Each bag clamping assembly 30 includes a clamping structure 31 for clamping the two sides of the packaging bag after separation.

[0038] Combined with reference Figure 1As shown, the frame 10 can be a square frame welded from profiles, used to support and fix the bag opening mechanism 20, the bag clamping assembly 30, and other components. The packaging bag is usually laid flat on a platform or conveyor belt for the bag opening operation to complete the subsequent material filling. Therefore, in this embodiment, the bag opening assembly 22 and the bag holding assembly 21 can be respectively set on the upper and lower sides of the packaging bag, and both the bag opening assembly 22 and the bag holding assembly 21 are equipped with suction cup structures 201. The suction cup structures 201 have several suction nozzles arranged linearly. The upper and lower sides of the packaging bag are adsorbed by the suction cup structures 201 of the bag opening assembly 22 and the bag holding assembly 21. The bag opening assembly 22 can be slidably connected to the frame 10. By driving the bag opening assembly 22 to move, the bag opening can be stretched or opened to ensure that the opening is large enough to fill the material. It should be noted that in this embodiment, the bag opening component 22 is slidably disposed relative to the frame 10. Alternatively, the bag holding component 21 can be slidably connected to the frame 10, while the bag opening component 22 is fixedly connected. Or, both the bag opening component 22 and the strap holding component can be slidably connected to the frame 10. The components slidably connected to the frame 10 can be driven to move by a moving mechanism such as a cylinder 314 or a lead screw and nut pair, thereby separating the bag opening. In the latter two methods, because the packaging bag is obstructed by the platform or conveyor belt during the downward suction process, the packaging bag may deform. Therefore, the platform or conveyor belt needs to move in coordination with the bag holding component 21 to keep the bag opening in a centered position.

[0039] Furthermore, after the bag opening assembly 22 and the bag holding assembly 21 open the bag opening in opposite directions, they need to be held open for a certain period of time to allow for material filling. Opening the bag opening solely by the suction force of the suction cup assembly may result in incomplete opening or reclosing after opening due to insufficient suction. Therefore, bag clamping assemblies 30 can be installed adjacent to the bag opening assembly 22 and the bag holding assembly 21. Each bag clamping assembly 30 has a clamping structure 31, such as grippers or two clamping plates, which can clamp the separated bag opening, keeping it open and facilitating material filling. The bag clamping assembly 30 can be connected to the bag opening assembly 22 and the bag holding assembly 21. When the bag opening assembly 22 and the bag holding assembly 21 open to a certain height (e.g., 50mm), the bag clamping assembly 30 clamps the two sides of the bag opening to maintain its open state until filling is complete. The bag clamping assembly 30 can also be connected independently to the frame 10. The bag opening mechanism 20 and the bag clamping assembly 30 are arranged on the frame 10 to complete the bag opening. The bag opening mechanism 20 includes a bag support assembly 21 and a bag opening assembly 22 respectively arranged on both sides of the packaging bag. Both the bag support assembly 21 and the bag opening assembly 22 are equipped with suction cup structures 201. The bag opening assembly 22 is also slidably connected to the frame 10. The suction cup structures 201 adsorb the two sides of the packaging bag, and then drive the bag opening assembly 22 to move, so that the two sides of the packaging bag are separated. Furthermore, the bag clamping assembly 30 is arranged on the side of both the bag support assembly 21 and the bag opening assembly 22. The bag clamping assembly 30 is equipped with a clamping structure 31, which can clamp the two sides of the packaging bag after it has been separated by the bag support assembly 21 and the bag opening assembly 22, so as to avoid incomplete or unstable bag opening caused by insufficient or unstable adsorption force of the suction cup structure 201.

[0040] In one possible implementation, the bag opening assembly 22 further includes:

[0041] Gantry 221, which is vertically mounted on the frame 10; and

[0042] A lifting structure 222 is fixedly connected to the gantry frame 221 and drives the suction cup structure 201 connected to the bag opening assembly 22.

[0043] Combined with reference Figure 2 and Figure 3As shown, to facilitate the lifting and lowering of the bag opening assembly 22, a gantry frame 221 can be vertically installed on the frame 10, and the lifting structure 222 can be installed and fixed on the gantry frame 221. The lifting structure 222 can be a screw and nut assembly, which drives the screw to rotate via a motor, thereby lifting and lowering the bag opening assembly 22 installed on the nut seat. Alternatively, the suction cup structure 201 can be directly lifted and lowered via a cylinder 314. To ensure the stability of the lifting process, the bag opening assembly 22 can be slidably connected to the frame 10, and the bag opening assembly 22 can be limited to ensure the stability of the bag opening.

[0044] In one possible implementation, the clamping structure 31 includes:

[0045] Fixing plate 311;

[0046] Mounting plate 312, which is connected to the fixing plate 311;

[0047] Clamping block 313, the clamping block 313 is connected to the fixing plate 311 and is disposed opposite to the mounting plate 312, forming a clamping space between the two; and

[0048] A cylinder 314 is mounted on the mounting plate 312. The piston rod of the cylinder 314 is connected to a clamping block 3141. The cylinder 314 drives the clamping block 3141 and the clamping block 313 to close or separate.

[0049] Combined with reference Figure 4 and Figure 5 As shown, the fixing plate 311, the mounting plate 312, and the clamping block 313 form a semi-enclosed structure, creating a clamping space with the opening facing the bag opening of the packaging bag. The cylinder 314 is mounted on the mounting plate 312, and the piston rod of the cylinder 314 is located within the clamping space. A pressing block 3141 is also connected to the end of the piston rod of the cylinder 314. Under the drive of the cylinder 314, the pressing block 3141 can close or separate from the clamping block 313, thereby achieving clamping or releasing the side of the bag opening of the packaging bag.

[0050] In one possible implementation, the bag clamp assembly 30 further includes:

[0051] Fixture 32;

[0052] A longitudinal moving component 33 is connected to the fixed frame 32;

[0053] A vertical moving component 34 is driven and connected to the longitudinal moving component 33;

[0054] A lateral moving component 35 is driven to be connected to the vertical moving component 34, and a clamping structure 31 is driven to be connected to the lateral moving component 35.

[0055] Combined with reference Figure 4 and Figure 5 As shown, the fixed frame 32 can be fixedly connected to the gantry frame 221 or the bag opening mechanism 20. A longitudinal moving component 33 is provided on the fixed frame 32, which allows the clamping structure 31 to move closer to or further away from the bag opening in a horizontal position. A vertical moving component 34 is connected to the longitudinal moving component 33, which allows the clamping structure 31 to move vertically up and down. The vertical moving component 34 drives and connects to a transverse moving component 35, which allows the clamping structure 31 to be clamped at different positions on the bag opening. The transverse moving component 35 drives and connects to the clamping structure 31, which allows the clamping structure 31 to move along the edge of the bag opening to clamp at a specific position. It should be noted that the linear moving mechanism enables the equipment or workpiece to move along a straight path. The longitudinal moving component 33, the vertical moving component 34, and the transverse moving component 35 can be linear moving mechanisms, including sliders, guide rails, lead screws, and nut systems, etc. Typically driven by a motor, hydraulic cylinder, or pneumatic piston, the clamping structure 31 is adjusted in the horizontal, vertical, and longitudinal directions to precisely clamp the side of the packaging bag, keeping the bag opening open. In this embodiment, the bag clamping assemblies 30 located on the upper and lower sides of the packaging bag are symmetrically arranged, with identical structures but opposite working directions, to keep the bag opening open and in place.

[0056] In one possible implementation, two clamping structures 31 are provided, and the lateral movement component 35 drives the two clamping structures 31 to move closer to or further away from each other.

[0057] Combined with reference Figure 4 and Figure 5 As shown, in this embodiment, both the upper and lower bag clamping assemblies 30 are provided with two clamping structures 31. The two ends of the lateral moving assembly 35 drive the two clamping structures 31 respectively, so that they move closer or further apart to adjust the bag opening of different sizes. In this embodiment, the upper bag clamping assembly 30 has two clamping structures 31, and the lower bag clamping assembly 30 also has two clamping structures 31. The four clamping structures 31 clamp together to open the bag opening of the packaging bag and keep it square, so as to facilitate material filling.

[0058] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application 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, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0059] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A bag opening mechanism for a packaging bag, characterized in that, include: frame; A bag opening mechanism, comprising a bag holding assembly and a bag opening assembly respectively disposed on both sides of the packaging bag, wherein the bag holding assembly and the bag opening assembly are each provided with a suction cup structure for adsorbing the packaging bag, and the bag opening assembly is slidably connected to the frame to separate the two sides of the packaging bag. as well as Two bag clamping assemblies are respectively disposed adjacent to the bag supporting assembly and the bag opening assembly. Each bag clamping assembly includes a clamping structure for clamping the two sides of the packaging bag after separation. The bag clamping assembly also includes: Fixture; A longitudinal movement assembly, the longitudinal movement assembly being connected to the fixed frame; A vertical moving component, which is driven and connected to the longitudinal moving component; A lateral moving component, which is driven and connected to the vertical moving component, and a clamping structure, which is driven and connected to the lateral moving component; The clamping structure includes: Fixing plate; Mounting plate, the mounting plate being connected to the fixing plate; A clamping block, connected to the fixing plate and disposed opposite to the mounting plate, forming a clamping space between them; and A cylinder is mounted on the mounting plate, and a clamping block is connected to the end of the piston rod of the cylinder. The cylinder drives the clamping block and the clamping block to close or separate.

2. The packaging bag opening mechanism according to claim 1, characterized in that, The bag opening component also includes: Gantry crane, which is vertically mounted on the frame; and A lifting structure is fixedly connected to the gantry frame and drives the suction cup structure connected to the bag opening assembly.

3. The packaging bag opening mechanism according to claim 1, characterized in that, The clamping structure is provided in two parts, and the lateral movement component drives the two clamping structures to move closer to or further away from each other.

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