A packaging bag clamping and conveying device

Abstract

A kind of packaging bag clamping and conveying device, including conveying platform, guide rail being located on conveying platform and first clamping mechanism and / or second clamping mechanism capable of moving along guide rail;The first clamping mechanism includes first clamping body, suspension bracket being located on first clamping body and first drive unit for driving first clamping body moves along guide rail;Suspension bracket is equipped with clamping part for clamping the bag mouth flange of packaging bag;The second clamping mechanism includes second clamping body, swing arm rotationally connected with second clamping body, second drive unit for driving second clamping body moves along guide rail, and swing arm drive portion for driving swing arm rotation, by rotating swing arm away from or close to the clamping surface of second clamping body, the clamping or loosening of packaging bag is completed.The present application has simple structure, small space occupation, neither damage the bag mouth of packaging bag, there is no risk of foreign matter entering the bag mouth of packaging bag, can also clamp different morphological packaging bags and transfer.

Description

Technical Field

[0001] This invention relates to the field of automated packaging bag conveying technology, and in particular to a packaging bag clamping and conveying device. Background Technology

[0002] With the continuous development of industrial automation, the packaging industry has placed higher demands on the automation level, production efficiency, and reliability of equipment. Currently, many traditional packaging machines suffer from low automation and complex operation in practical applications, leading to high labor intensity for employees and low production efficiency. Especially in the process of ton bag packaging, traditional manual handling not only increases operational difficulty but also significantly consumes human resources.

[0003] Existing automated bag conveying production lines use grippers to hold and transport bags to the next process. However, these grippers typically clamp the bag opening directly, which can damage it and poses a risk of foreign objects falling in. Other methods use four lifting lugs to suspend the bags, but this requires complex equipment to identify the lugs' positions, and the lugs' varied shapes make precise gripping difficult.

[0004] Furthermore, the gripper gripping method is not suitable for holding packaging bags of different shapes, such as those without lifting lugs. While some existing methods use swing arms to grip and transfer packaging bags, these typically involve double swing arms that oscillate left and right, resulting in a complex structure and a large swing amplitude, significantly increasing space occupancy.

[0005] Therefore, the present invention urgently needs to design a packaging bag clamping and conveying device to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to overcome the above-mentioned shortcomings of the prior art and provide a packaging bag clamping and conveying device with simple structure, small space occupation, and strong versatility.

[0007] The technical solution of the present invention is: a packaging bag clamping and conveying device, including a conveying platform, a guide rail disposed on the conveying platform, and a first clamping mechanism and / or a second clamping mechanism capable of moving along the guide rail; The first clamping mechanism includes a first clamping body, a suspension mounted on the first clamping body, and a first transmission unit for driving the first clamping body to move along a guide rail; the suspension can surround the opening of the packaging bag to be clamped; the suspension is provided with a clamping part for clamping the flange of the opening of the packaging bag; The second clamping mechanism includes a second clamping body, a swing arm rotatably connected to the second clamping body, a second transmission unit for driving the second clamping body to move along a guide rail, and a swing arm drive unit for driving the swing arm to rotate; a clamping space for clamping the packaging bag is formed between the clamping surface of the swing arm and the clamping surface of the second clamping body, and the packaging bag is clamped or released by rotating the swing arm away from or towards the clamping surface of the second clamping body.

[0008] Furthermore, the first clamping body extends a connecting end in a direction perpendicular to the guide rail, and is detachably connected to the suspension.

[0009] Furthermore, the suspension is designed as an open, non-closed structure, allowing the opening of the packaging bag to enter and be surrounded by it.

[0010] Furthermore, the flange includes multiple edges extending outward from the opening of the packaging bag.

[0011] Furthermore, the clamping part includes multiple grippers disposed on the suspension and a gripper drive part for controlling the opening and closing of each gripper. The number of grippers corresponds to the number of edges. The multiple grippers are positioned such that when the opening of the packaging bag is surrounded by the target position of the suspension, the multiple grippers correspond exactly to the multiple edges protruding from the opening of the packaging bag, and the edges can be inserted into the gaps between the corresponding grippers and clamped by them.

[0012] Furthermore, the first clamping mechanism or guide rail side is provided with a first positioning sensor for positioning the packaging bag; the position setting of the first positioning sensor satisfies the following condition: when the opening of the packaging bag is detected to be surrounded by the opening of the suspension at the target position, the first clamping mechanism stops moving.

[0013] Furthermore, the second clamping body includes a mounting base and a clamping seat extending along the mounting base; the mounting base is slidably connected to the guide rail via a slider; the clamping seat and the mounting base are detachably connected.

[0014] Furthermore, the clamping seat includes a housing and a clamping body extending horizontally along one side of the housing. The swing arm drive unit is disposed in the housing, and the drive end of the swing arm drive unit extends along the housing and connects to the swing arm, enabling the swing arm to rotate clockwise or counterclockwise within a 180° range.

[0015] Furthermore, the clamping body includes a clamping surface and a positioning mounting surface, with a gap between them; the clamping surface of the clamping body is used to cooperate with the clamping surface of the swing arm to form the clamping space for clamping the packaging bag; a second positioning sensor for positioning the position of the ton bag is provided on the positioning mounting surface; the clamping surface is designed with a porous structure, and the second positioning sensor detects the position of the packaging bag through the holes.

[0016] Furthermore, the first clamping mechanism and the second clamping mechanism share the same guide rail, or multiple guide rails are provided; the guide rail can selectively connect to other clamping mechanisms; the guide rail is laid on one side.

[0017] The beneficial effects of this invention are: By setting the first clamping mechanism to clamp the protruding edge of the packaging bag opening, the packaging bag opening will not be damaged, there is no risk of foreign objects entering the packaging bag opening, and the clamping is stable and reliable, and the packaging bag will not fall off. By setting a second clamping mechanism, since the clamping body extends out and is parallel to the guide rail, it will not take up too much space. Moreover, only one swing arm is set to cooperate with the clamping body to form a clamping space, which can clamp and transfer packaging bags of different shapes. The structure is simple and highly versatile. Furthermore, when the swing arm is rotated to the open state away from the clamping body, it remains on the same horizontal plane as the clamping body, which will not take up much space. It has a high degree of overall automation, occupies little space, and can arrange different structural forms or numbers of clamping mechanisms on the guide rail to meet different needs. It is suitable for various types of packaging bags, with good design flexibility and strong versatility. The connecting ends extending from the first clamping mechanism and / or the second clamping mechanism can also detach the cantilever or clamping body with swing arm to replace other clamping structures, making it highly versatile and applicable to the conveying and transfer of different types of packaging bags. The arrangement of the first and second clamping mechanisms in this invention allows the invention to be configured with only a single-sided guide rail, greatly simplifying the structure, reducing costs, and even allowing for a reduction in the width of the conveying platform. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the present invention (the swing arm is rotated to the clamping state). Figure 2 This is a three-dimensional structural schematic diagram of an embodiment of the present invention (the swing arm is rotated to the open state); Figure 3 yes Figure 1 An enlarged structural schematic diagram of the first clamping mechanism in the embodiment shown; Figure 4 yes Figure 3 The illustrated embodiment shows a top view of the gripper holding the edge of the bag opening; Figure 5 This is a schematic diagram of the structure of the clamping cylinder connecting the gripper according to an embodiment of the present invention; Figure 6 yes Figure 1 An enlarged schematic diagram of the second clamping mechanism in the embodiment shown; Figure 7 yes Figure 2 An enlarged structural schematic diagram of the second clamping mechanism in the embodiment shown.

[0019] Explanation of reference numerals in the attached diagram: 1. Conveying platform; 2. Guide rail; 3. First clamping mechanism; 4. Second clamping mechanism; 5. Ton bag; 31. First clamping body; 32. Suspension; 33. Connecting seat; 34. Support seat; 35. Clamping cylinder; 36. Gripper; 41. Second clamping body; 42. Swing arm; 51. Edge; 411. Mounting base; 412. Clamping base; 421. Connecting plate; 422. Clamping plate; 4121. Box body; 4122. Clamping body; 4123. Limiting plate; 4122-1 Clamping surface; 4122-2 Positioning and mounting surface; 4122-3 Clamping space. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] like Figure 1 and Figure 2 As shown: A packaging bag clamping and conveying device includes a conveying platform 1 (not fully shown in the figure), a guide rail 2 provided on the conveying platform 1, and a first clamping mechanism 3 and / or a second clamping mechanism 4 that can move along the guide rail. The first clamping mechanism 3 is provided with a clamping part for clamping the bag opening flange of the packaging bag; the second clamping mechanism 4 is provided with a swing arm 42 for clamping or releasing the packaging bag by rotation.

[0022] The packaging bag in this embodiment is mainly a relatively large bag, such as a ton bag 5. The aforementioned bag opening flange refers to the outwardly turned edge formed by heat pressing at the bag opening, or the outwardly turned edge pre-sewn around the bag opening, that is, the edge 51 protruding outwards along the bag opening. This embodiment is particularly suitable for packaging bags where the bag opening extends upwards along the bag body and has edges around the bag opening; or the packaging bag includes an outer bag and an inner bag, with the inner bag extending along the bag opening of the outer bag and having an outwardly protruding edge 51 at the bag opening of the inner bag.

[0023] It is understood that this embodiment can provide one or more clamping mechanisms on the guide rail 2. That is, different structural forms or numbers of clamping mechanisms can be arranged on the guide rail 2 to transport ton bags 5 of different shapes. For example, sliders can be reserved at other positions on the guide rail to facilitate the connection of other clamping mechanisms. In this embodiment, it is preferable to arrange the first clamping mechanism 3 and the second clamping mechanism 4 on the guide rail at the same time. The two clamping mechanisms adopt an independent driving mode and can move independently along different paths or areas of the guide rail without interfering with each other, so as to clamp ton bags of different shapes, greatly improving work efficiency; or they can move sequentially according to the processing steps of the ton bags. For example, the first clamping mechanism 3 can transfer the ton bag to a certain station, and after the processing at that station is completed, the second clamping mechanism 4 can transfer the ton bag to other stations.

[0024] In this embodiment, a single-sided guide rail 2 is preferably provided on the conveying platform 1, which greatly simplifies the structure. The guide rail 2 can be laid continuously along the conveying platform 1, or it can be laid in sections according to different clamping mechanisms. For example, the first clamping mechanism 3 and the second clamping mechanism 4 can share the same guide rail; or two sections of guide rail can be provided, with the first clamping mechanism 3 and the second clamping mechanism 4 moving along their respective guide rails. The guide rail 2 can be laid horizontally or can have bends.

[0025] like Figures 3-5 As shown: In this embodiment, the first clamping mechanism 3 includes a first clamping body 31, a suspension 32 disposed on the first clamping body, and a first transmission unit for driving the first clamping body and the suspension to move horizontally along the guide rail.

[0026] Specifically, the first transmission unit can adopt conventional transmission methods such as motor-screw drive, motor-gear-rack drive, or motor-belt drive. For example, in this embodiment, the first transmission unit adopts a motor-gear-rack drive structure, including a motor, a slider that slides with the guide rail, a gear, and a rack; the motor is mounted on the first clamping body 31, and the first clamping body 31 is fixed on the slider; the output shaft of the motor is connected to the gear; the rack is fixed to one side of the guide rail 2, and the gear and the transmission rack mesh to form a gear-rack pair. The motor drives the first clamping body 31 to move horizontally along the guide rail 2 via the gear-rack pair, that is, the motor drives the gear to rotate, the gear moves along the rack, and drives the first clamping body 31 to move horizontally along the guide rail 2 via the slider.

[0027] Furthermore, the first clamping body 31 can be designed in any shape, as long as it can fix the motor and the suspension 32. The first clamping body 31 is connected to the suspension 32 via a connecting seat 33, and the connection method is screw connection. The suspension 32 extends along the first clamping body 31 in a direction perpendicular to the guide rail 2. The suspension 32 is preferably a U-shaped structure, which can encircle a part of the ton bag 5, mainly the bag opening. The clamping part includes four jaws 36 provided on the suspension 32 and clamping cylinders 35 for controlling the opening and closing of each jaw 36. The suspension 32 has symmetrical support seats 34 on two oppositely arranged cantilever arms. The support seats 34 have a cavity at the position where the clamping cylinders 35 are installed. Each support seat is equipped with two clamping cylinders 35. The drive end of the clamping cylinder 35 is connected to the jaws 36, which can control their opening and closing. All four jaws 36 face the U-shaped cavity of the suspension 32.

[0028] Furthermore, to facilitate the positioning of the suspension 32 to the ton bag 5, a first positioning sensor, such as a photoelectric sensor, can be arranged on the guide rail side to accurately locate the opening of the ton bag 5. For example, a baffle can be set on the first clamping body 31, and a U-shaped photoelectric switch can be set at a predetermined position on one side of the guide rail or the rack side. When the ton bag 5 needs to be clamped, the first clamping body 31 moves horizontally along the guide rail 2. When it moves to the point where the baffle blocks the U-shaped photoelectric switch, it stops moving. At this time, the U-shaped opening of the suspension 32 just surrounds the opening of the ton bag 5, and the ton bag 5 is located in the center of the suspension 32. The four protruding edges 51 of the opening of the ton bag 5 are exactly located at the corresponding gripper positions. Then, the clamping cylinder 35 drives the gripper 36 to open and clamp the edges 51. Alternatively, before the ton bag 5 enters the clamping area, the gripper 36 can be pre-opened to a sufficient width so that the protruding edges 51 of the ton bag opening can smoothly enter the gap of the gripper 36 to achieve accurate gripping and prevent missed gripping.

[0029] In this embodiment, the position of the first positioning sensor is configured such that the opening of the ton bag 5 is surrounded by the U-shaped opening of the suspension 32 at its center, which is also the center between the four grippers 36. The position of the four grippers 36 is configured such that when the opening of the ton bag 5 is surrounded by the center of the suspension 32, the four grippers 36 precisely correspond to the four protruding edges 51 of the ton bag opening, and the four edges 51 can be accurately inserted into the gaps between the grippers and held in place. This embodiment, by using the grippers 36 to hold the protruding edges 51 of the ton bag opening, avoids damaging the ton bag opening and eliminates the risk of foreign objects entering the ton bag opening; furthermore, the gripping of the ton bag is stable and reliable during movement, preventing the ton bag from falling.

[0030] like Figure 6 and Figure 7As shown: In this embodiment, the second clamping mechanism 4 includes a second clamping body 41, a swing arm 42 rotatably connected to the second clamping body 41, a second transmission unit for driving the second clamping body 41 to move along the guide rail 2, and a swing arm cylinder for driving the swing arm 42 to rotate. Specifically, the second transmission unit can adopt conventional transmission methods such as motor-screw drive, motor-gear-rack drive, or motor-belt drive. Preferably, the second transmission unit adopts the same structure as the first transmission unit, which will not be described in detail here.

[0031] Furthermore, the second clamping body 41 includes a mounting base 411 for fixing components such as motors, and the mounting base 411 is fixedly connected to the slider; the front end of the mounting base 411 extends into a clamping seat 412 in a direction perpendicular to the guide rail, and the clamping seat 412 and the mounting base 411 are preferably detachably connected to facilitate the replacement of the clamping seat 412, for example, by threaded connection of multiple connecting rods.

[0032] Understandably, a cylinder can also be installed on the mounting base 411. The piston rod end of the cylinder is connected to the clamping seat, which can control the back-and-forth movement of the clamping seat to adjust its back-and-forth position.

[0033] Furthermore, the clamping base 412 includes a housing 4121 and a clamping body 4122 extending horizontally along one side of the housing. A swing arm cylinder is installed inside the housing 4121, and the drive end of the swing arm cylinder is connected to the swing arm 42. Preferably, the swing arm cylinder is a rotary cylinder capable of rotating within a 180° range. The drive shaft of the swing arm cylinder extends out of the housing 4121 and is connected to the swing arm 42, enabling it to rotate the swing arm 180°. A limiting plate 4123 is provided above the swing arm 42 to prevent the swing arm from disengaging from the swing arm cylinder. It is understood that the method of controlling the rotation of the swing arm in this embodiment can also employ other drive mechanisms, such as motor drive, or a rotary drive method combining a motor / cylinder with transmission components such as gears.

[0034] Furthermore, the clamping body 4122 includes a clamping surface 4122-1 and a positioning mounting surface 4122-2, with a gap between them. The clamping surface is used to cooperate with the clamping surface of the swing arm to form a clamping space 4122-3 for clamping the ton bag, and the clamping surface is a flat surface. The positioning mounting surface 4122-2 can fix a second positioning sensor, such as a photoelectric sensor, for positioning the ton bag, and the clamping surface 4122-1 is designed with a porous structure, through which the photoelectric sensor can detect the position of the ton bag.

[0035] Furthermore, the swing arm 42 includes a connecting plate 421 connected to the swing arm cylinder and a clamping plate 422 integrally formed with the connecting plate. When the swing arm 42 rotates to the side of the clamping body 4122 of the clamping seat, it is positioned opposite to the clamping body 4122, and the opposite sides of the two are the clamping surfaces. The gap between the two is just enough to clamp the ton bag 5. Driven by the swing arm cylinder, the swing arm 42 can rotate 180° to complete the clamping or opening of the ton bag. For example, when the swing arm cylinder drives the swing arm 42 to rotate clockwise, it rotates 180° towards the clamping seat housing 4121. At this time, the swing arm 42 moves away from the clamping surface 4122-1 of the clamping body, forming an open state. The second clamping body 4 moves horizontally along the guide rail 2. When the photoelectric sensor detects the ton bag 5, it stops moving. The swing arm cylinder drives the swing arm 42 to rotate 180° counterclockwise. At this time, the swing arm 42 is just opposite to the clamping surface 4122-1 of the clamping body and clamps the ton bag 5. The above structure of this embodiment can be applied to the transfer of ton bags of different shapes. The clamping surface can clamp the bag mouth or bag body of the ton bag. It is suitable for various types of ton bags, with good design flexibility and strong versatility.

[0036] It is understood that the first clamping mechanism 3 and the second clamping mechanism 4 in this embodiment can also be equipped with different forms of clamping structures according to different needs. For example, the first clamping body and the second clamping body can remain unchanged, and their respective extended connecting ends can be connected to different forms of clamping structures. For example, the suspension can be replaced to connect other forms of clamping structures; or the clamping seat of the second clamping mechanism can be removed and replaced with other clamping structures.

[0037] In summary, this invention, on the one hand, by setting a first clamping mechanism to clamp the protruding edge of the packaging bag opening, will not damage the packaging bag opening, nor will it pose a risk of foreign objects entering the packaging bag opening, and the clamping is stable and reliable, preventing the packaging bag from falling off; on the other hand, by setting a second clamping mechanism, due to the large opening and closing angle of the swing arm, it can clamp and transfer packaging bags of different shapes, with a simple structure and strong versatility.

[0038] In addition, it has a high degree of overall automation, occupies little space, and can arrange different structural forms or numbers of clamping mechanisms on the guide rail to meet different needs. It is suitable for various types of packaging bags, has good design flexibility, and is highly versatile.

[0039] Furthermore, the connecting ends extending from the first clamping mechanism and / or the second clamping mechanism can also be disassembled to replace other clamping structures with cantilever or swing arm clamping bodies, making them highly versatile and applicable to the conveying and transfer of different types of packaging bags.

[0040] Furthermore, the term "connection" should be interpreted broadly, for example, it can include fixed connections, detachable connections, or integral connections; it can include direct connections or indirect connections through an intermediate medium, and it can also include internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0042] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A packaging bag clamping and conveying device, comprising a conveying platform, a guide rail disposed on the conveying platform, and a first clamping mechanism and a second clamping mechanism capable of moving along the guide rail; The first clamping mechanism includes a first clamping body, a suspension mounted on the first clamping body, and a first transmission unit for driving the first clamping body to move along a guide rail; the suspension can surround the opening of the packaging bag to be clamped; the suspension is provided with a clamping part for clamping the flange of the opening of the packaging bag; The second clamping mechanism includes a second clamping body, a swing arm rotatably connected to the second clamping body, a second transmission unit for driving the second clamping body to move along the guide rail, and a swing arm drive unit for driving the swing arm to rotate; a clamping space for clamping the packaging bag is formed between the clamping surface of the swing arm and the clamping surface of the second clamping body, and the packaging bag is clamped or released by rotating the swing arm away from or towards the clamping surface of the second clamping body; The flange includes multiple edges extending outward from the opening of the packaging bag; The clamping part includes multiple clamps mounted on the suspension and a clamp driving part for controlling the opening and closing of each clamp. The number of clamps corresponds to the number of edges. The multiple clamps are positioned such that when the opening of the packaging bag is surrounded by the target position of the suspension, the multiple clamps correspond exactly to the multiple edges protruding from the opening of the packaging bag, and the edges can be inserted into the gaps between the corresponding clamps and clamped by them. The second clamping body includes a mounting base and a clamping seat extending along the mounting base; the mounting base is slidably connected to the guide rail via a slider; the clamping seat and the mounting base are detachably connected. The clamping seat includes a housing and a clamping body extending horizontally along one side of the housing. The swing arm drive unit is located inside the housing, and the drive end of the swing arm drive unit extends along the housing and connects to the swing arm, enabling the swing arm to rotate clockwise or counterclockwise within a 180° range.

2. The packaging bag clamping and conveying device according to claim 1, characterized in that, The first clamping body extends a connecting end in a direction perpendicular to the guide rail and is detachably connected to the suspension.

3. The packaging bag clamping and conveying device according to claim 1 or 2, characterized in that, The suspension is designed as an open, non-closed structure, allowing the opening of the packaging bag to enter and be surrounded by it.

4. The packaging bag clamping and conveying device according to claim 1 or 2, characterized in that, The first clamping mechanism or guide rail side is provided with a first positioning sensor for positioning the packaging bag; the position setting of the first positioning sensor satisfies the following condition: when the opening of the packaging bag is detected to be surrounded by the opening of the suspension at the target position, the first clamping mechanism stops moving.

5. The packaging bag clamping and conveying device according to claim 1, characterized in that, The clamping body includes a clamping surface and a positioning mounting surface, with a gap between them; the clamping surface of the clamping body is used to cooperate with the clamping surface of the swing arm to form the clamping space for clamping the packaging bag; a second positioning sensor for positioning the position of the packaging bag is provided on the positioning mounting surface; the clamping surface is designed with a porous structure, and the second positioning sensor detects the position of the packaging bag through the holes.

6. The packaging bag clamping and conveying device according to claim 1 or 2, characterized in that, The first clamping mechanism and the second clamping mechanism share the same guide rail, or multiple guide rails are provided; the guide rail can selectively connect to other clamping mechanisms; the guide rail is laid on one side of the conveying platform.

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