A high speed cycle bag opening mechanism

Abstract

The utility model discloses a kind of high-speed circulation bag opening mechanism, it is related to bag opening mechanism technical field, including rack, first cylinder, proximity switch, second cylinder, first crank, second crank and suction cup.The utility model is installed and fixed on bag opener by rack, by the composite motion of cylinder, cylinder, crank, crank, the motion track control of suction cup is realized, and by two proximity switches respectively control bag receiving and bag opening position, realize accurate, high-speed bag opening;By setting PE bag installation and bag opening automation, can effectively reduce repetitive labor, shorten production cycle;Second, inductive proximity switch control crank operating position is utilized, after detecting crank position signal, signal transmission is to PLC control unit, control unit processes signal and exports instruction control cylinder action to realize bag receiving and bag opening position accurate control, compared with traditional bag opening mechanism has more accurate bag opening effect, and not susceptible to external interference.

Description

Technical Field

[0001] This utility model belongs to the technical field of bag opening mechanism, and in particular relates to a high-speed circulating bag opening mechanism. Background Technology

[0002] In modern automated packaging production lines, especially in industries such as food, pharmaceuticals, daily chemicals, and chemicals, bagging products is an extremely common process. The automatic, efficient, and reliable opening of pre-fabricated PE (polyethylene) bags to facilitate subsequent material filling and sealing is a crucial link in the entire automated packaging process. The efficiency, stability, and accuracy of bag opening directly determine the overall production line capacity and packaging quality.

[0003] For example, a bag opening mechanism proposed in CN221718964U includes a base, a bag opening motor, gripping manipulators, and a threaded transmission rod. The bag opening motor is located on one side of the base and connected to the threaded transmission rod located inside the base. Two gripping manipulators are connected to the threaded transmission rod by threaded connections. The two gripping manipulators grip both sides of the bag respectively, and then the bag opening motor drives the two gripping manipulators to move towards each other to complete the bag opening.

[0004] The above-mentioned patent has the following defects in use:

[0005] The bag opening motor drives the threaded transmission rod to move the gripping robot. Without a position detection element, the actual position of the robot cannot be monitored in real time. The accuracy of the bag opening / closing position mainly depends on the mechanical rigidity. When the thread wears or the motor speed fluctuates, the actual position is easily deviated from the target value due to these factors, resulting in errors during the bag opening operation and affecting its accuracy. Therefore, this utility model proposes a high-speed cyclic bag opening mechanism. Utility Model Content

[0006] This invention provides a high-speed circulating bag opening mechanism. The mechanism is mounted and fixed on a bag opening machine via a frame. The motion trajectory of the suction cup is controlled through the combined motion of a cylinder, a crank, and another crank. Two proximity switches control the bag receiving and opening positions respectively, achieving precise and high-speed bag opening. By automating the PE bag installation and opening, repetitive labor can be effectively reduced, shortening the production cycle. Furthermore, the inductive proximity switch controls the crank's position. After detecting the crank position signal, the signal is transmitted to the PLC control unit. The control unit processes the signal and outputs commands to control the cylinder's action, achieving precise control of the bag receiving and opening positions. Compared to traditional bag opening mechanisms, this provides a more accurate bag opening effect and is less susceptible to external interference, thus solving the problems in the background technology.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0008] This utility model discloses a high-speed circulating bag opening mechanism, comprising:

[0009] The device comprises a frame, a first cylinder, proximity switches, a second cylinder, a first crank, a second crank, and suction cups. The first cylinder is mounted on the frame via a bracket. The opposite sides of the two pairs of first cranks are connected by round rods and bearings. The opposite sides of the pair of second cranks are rotatably connected to the opposite sides of the pair of first cranks via shafts and bearings. The two second cranks on the front side are connected by bearings, shafts, and connecting rods. The piston rod of the first cylinder is connected to the second crank on the left side via shafts and bearings. The pair of second cylinders are mounted on the frame via brackets and are respectively fitted onto the outer walls of the pair of round rods. Connecting seats are fixedly connected between the outer walls of the two pairs of first cranks. Multiple suction cups are fixedly connected to the opposite sides of the pair of connecting seats. The frame has an arc-shaped groove, and the pair of proximity switches are installed inside the arc-shaped groove. A sensor trigger is fixedly connected to the outer wall of the second crank on the right side.

[0010] Furthermore, the sensing trigger is a metal sheet, and the proximity switch outputs a position signal by sensing the metal trigger's proximity or distance.

[0011] Furthermore, the proximity switch located at the bottom of the arc-shaped groove is a bag receiving position switch, and the proximity switch located at the top of the arc-shaped groove is a bag opening position switch.

[0012] The present invention has the following advantages over the prior art:

[0013] 1. This technical solution uses a frame to install and fix the mechanism on the bag opening machine. The motion trajectory of the suction cup is controlled by the combined motion of the cylinder, the crank, and the bag opening position is controlled by two proximity switches, respectively, to achieve precise and high-speed bag opening.

[0014] 2. This technical solution can effectively reduce repetitive labor and shorten the production cycle by setting up automated PE bag installation and opening. Secondly, by using an inductive proximity switch to control the crank position, after detecting the crank position signal, the signal is transmitted to the PLC control unit. The control unit processes the signal and outputs instructions to control the cylinder to achieve precise control of the bag receiving and opening positions. Compared with the traditional bag opening mechanism, it has a more accurate bag opening effect and is not easily affected by external interference.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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 these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of a high-speed circulating bag opening mechanism according to the present invention;

[0018] Figure 2 This is a front view structural diagram of a high-speed circulating bag opening mechanism according to the present invention.

[0019] The attached diagram lists the components represented by each number as follows:

[0020] 1. Frame; 2. First cylinder; 3. Proximity switch; 4. Second cylinder; 5. First crank; 6. Second crank; 7. Suction cup. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be understood that the terms "relative", "one end", "inner", "lateral", "end", "both ends", "both sides", "front", "one end face", "the other end face", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Specific Implementation

[0023] Please see Figures 1-2 As shown, a high-speed circulating bag opening mechanism of this utility model includes:

[0024] The device comprises a frame 1, a first cylinder 2, a proximity switch 3, a second cylinder 4, a first crank 5, a second crank 6, and suction cups 7. The first cylinder 2 is mounted on the frame 1 via a bracket. The opposite sides of the two pairs of first cranks 5 are connected by round rods and bearings. The opposite sides of the pair of second cranks 6 are rotatably connected to the opposite sides of the pair of first cranks 5 via shafts and bearings. The two second cranks 6 located on the front side are connected by bearings, shafts, and connecting rods. The piston rod of the first cylinder 2 is connected to the second crank 6 located on the left side via shafts and bearings. The pair of second cylinders 4 are mounted on the frame 1 via brackets. The pair of second cylinders 4 are respectively sleeved on the outer walls of the pair of round rods. Connecting seats are fixedly connected between the outer walls of the two pairs of first cranks 5. Multiple suction cups 7 are fixedly connected to the opposite sides of the pair of connecting seats. An arc-shaped groove is carved on the frame 1. The pair of proximity switches 3 are installed inside the arc-shaped groove. A sensor trigger is fixedly connected to the outer wall of the second crank 6 located on the right side.

[0025] In the specific implementation process, the piston rod of the second cylinder 4 extends, driving the first crank 5 to rotate around the fulcrum via the sleeved round rod. This causes multiple suction cups 7 on the connecting seat to swing towards the packaging bag until the suction cups 7 adhere to the surface of the bag opening. As the first crank 5 swings, the second crank 6 on the right side rotates synchronously around the shaft, and the sensing trigger on its outer wall moves synchronously. When the trigger moves to the bottom of the arc-shaped groove, it approaches the proximity switch 3, i.e., the bag receiving position switch. The proximity switch 3 outputs a "bag receiving in place" electrical signal, and the control system immediately stops the action of the second cylinder 4. At the same time, the suction cups 7 are connected to the vacuum system through the air pipe, and the vacuum is started synchronously. The system uses suction cup 7 to generate negative pressure to adsorb the bag opening. After the suction cup 7 confirms adsorption, the control system issues an "open bag command". The piston rod of the first cylinder 2 extends quickly, driving the second crank 6 on the left to move, and through the connecting rod, it drives the second crank 6 on the right to move. Then, it drives the first cranks 5 on both sides to move out of phase, causing multiple suction cups 7 to open symmetrically to both sides, realizing the bag opening operation. The second crank 6 on the right continues to move with the bag opening action. When the sensing trigger moves to the top of the arc-shaped groove and approaches the switch 3, which is the bag opening position switch, the proximity switch 3 outputs an "open bag in place" electrical signal, and the first cylinder 2 stops working.

[0026] The sensing trigger is a metal sheet, and the proximity switch 3 outputs a position signal by sensing the metal trigger as it approaches or moves away from the metal trigger.

[0027] The proximity switch 3 is a position sensor that can detect the presence or absence of an object without direct contact with moving parts. It can convert non-electrical quantities such as position and displacement into electrical signals by sensing the approach or departure of an object, thereby realizing the automatic detection and control of the object's position. The specific type depends on the actual application. For example, in this embodiment, an inductive proximity switch can be selected. The core of the inductive proximity switch is to determine the approach of an object by detecting the interference of the electromagnetic field by the metal conductor. It can be effectively triggered in conjunction with an inductive trigger.

[0028] Among them, the proximity switch 3 located at the bottom of the arc-shaped groove is the bag receiving position switch, and the proximity switch 3 located at the top of the arc-shaped groove is the bag opening position switch.

[0029] Two proximity switches 3 control the bag receiving and opening positions respectively, enabling precise and high-speed bag opening.

[0030] The circuits, electronic components, and chip modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0031] All standard parts used in the application documents can be purchased from the market. All components in this application document can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The electrical components mentioned in this document are all electrically connected to the external main controller and power supply, and the main controller is a conventional known device that can play a control role.

[0032] The working principle of this utility model is as follows:

[0033] In use, the piston rod of the second cylinder 4 extends, driving the first crank 5 to rotate around the fulcrum via the sleeved round rod. This causes multiple suction cups 7 on the connecting seat to swing towards the packaging bag until the suction cups 7 adhere to the bag opening surface. As the first crank 5 swings, the second crank 6 on the right side rotates synchronously around the axis, and the sensing trigger on its outer wall moves synchronously. When the trigger moves to the bottom of the arc-shaped groove, it approaches the proximity switch 3, i.e., the bag receiving position switch. The proximity switch 3 outputs a "bag receiving in place" electrical signal, and the control system immediately stops the action of the second cylinder 4. At the same time, the suction cups 7 are connected to the vacuum system through the air pipe, and the vacuum system is activated synchronously. In the empty system, suction cup 7 generates negative pressure to adsorb the bag opening. After suction cup 7 confirms adsorption, the control system issues an "open bag command". The piston rod of the first cylinder 2 extends quickly, driving the second crank 6 on the left to move, and through the connecting rod, driving the second crank 6 on the right to move. Then, it drives the first cranks 5 on both sides to move out of phase, causing multiple suction cups 7 to open symmetrically to both sides, realizing the bag opening operation. The second crank 6 on the right continues to move with the bag opening action. When the sensing trigger moves to the top of the arc-shaped groove and approaches the switch 3, which is the bag opening position switch, the proximity switch 3 outputs an "open bag in place" electrical signal, and the first cylinder 2 stops working.

[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A high-speed circulating bag opening mechanism, characterized in that, include: The machine consists of a frame (1), a first cylinder (2), a proximity switch (3), a second cylinder (4), a first crank (5), a second crank (6), and a suction cup (7). The first cylinder (2) is mounted on the frame (1) via a bracket. The opposite sides of the two pairs of first cranks (5) are connected by a round rod and a bearing. The opposite sides of a pair of second cranks (6) are rotatably connected to the opposite sides of a pair of first cranks (5) via a shaft and a bearing. The two second cranks (6) located on the front side are connected by a bearing, a shaft, and a connecting rod. The first cylinder (2)... The piston rod is connected to the second crank (6) on the left side via a shaft and bearing. A pair of second cylinders (4) are mounted on the frame (1) via brackets. The pair of second cylinders (4) are respectively sleeved on the outer wall of a pair of round rods. A connecting seat is fixedly connected between the outer walls of the two pairs of first cranks (5). Multiple suction cups (7) are respectively fixedly connected to the opposite sides of a pair of connecting seats. An arc groove is chiseled on the frame (1). A pair of proximity switches (3) are installed inside the arc groove. A sensing trigger is fixedly connected to the outer wall of the second crank (6) on the right side.

2. The high-speed circulating bag opening mechanism according to claim 1, characterized in that, The sensing trigger is a metal sheet, and the proximity switch (3) outputs a position signal by sensing the metal trigger as it approaches or moves away from the metal trigger.

3. The high-speed circulating bag opening mechanism according to claim 1, characterized in that, The proximity switch (3) located at the bottom of the arc-shaped groove is a bag receiving position switch, and the proximity switch (3) located at the top of the arc-shaped groove is a bag opening position switch.

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