Bag clamping and moving device

Abstract

The utility model discloses a bag clamping and moving device which comprises a machine frame, a sliding frame is installed on the machine frame, the sliding frame is driven by a first driving mechanism to move back and forth along the machine frame, two rotating supports are connected to the sliding frame in a pivoted mode, and the two rotating supports are driven by a second driving mechanism to rotate back and forth. Each rotating support is provided with a packaging bag clamping mechanism, each packaging bag clamping mechanism comprises a clamping air cylinder and two clamping blocks, and the clamping air cylinders are installed on the rotating supports and at least drive one clamping block to clamp a packaging bag or loosen the packaging bag. Furthermore, the sliding frame comprises a left sliding frame body, a middle sliding frame body and a right sliding frame body, and the left sliding frame body and the right sliding frame body are each provided with a packaging bag clamping mechanism and a second driving mechanism. After a packaging bag is shifted, the clamping mechanism can effectively give way in the returning process, interference with other mechanisms is avoided, and structural arrangement of a whole set of packaging equipment is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of packaging equipment manufacturing technology, and in particular to a bag clamping and bag transferring device. Background Technology

[0002] In the field of granular material packaging equipment manufacturing technology, after filling granular materials such as rice into packaging bags, it is often necessary to remove the packaging bags containing the material from the filling mechanism and then move the packaging bags vertically. Traditional bag clamping and bag moving devices can only move the packaging bags in a certain direction. When the bag clamping and bag moving devices return to their original position, they also move in the original direction. This may cause interference with the actions of other mechanisms of the packaging equipment and is not conducive to the structural layout of other mechanisms of the packaging equipment.

[0003] For example, a Chinese utility model patent with patent number ZL202223014561.6 and title "A bag transfer mechanism applied to a packaging machine" was published on March 21, 2023. It includes a frame and a bag clamping assembly located at the front of the frame. The frame is equipped with a bag transfer assembly that is driven to move left and right by a synchronous belt conveyor assembly. The bag clamping assembly is installed at the front end of the bag transfer assembly. The bag clamping assembly includes a pair of bag clamping locking plates symmetrically distributed on the left and right. A fixed bag clamping arm is fixed at the lower part of the end of the pair of bag clamping locking plates that are close to each other. A vertically arranged swing cylinder is installed at the end of the pair of bag clamping locking plates that are far apart from each other. A movable bag clamping arm is fixed at the rotating end of the swing cylinder. The swing cylinder drives the movable bag clamping arm to swing toward the fixed bag clamping arm to clamp the bag opening. This utility model utilizes movable bag-clamping arms on both sides to cooperate with fixed bag-clamping arms to clamp the left and right ends of the packaging bag opening. Then, a bag-shifting assembly drives the bag-clamping assembly and the packaging bag to move left, right, front, and back, keeping the bag opening flat for the next process. However, the bag-clamping assembly of this bag-shifting mechanism can only move back and forth in the original direction, making it difficult to avoid other mechanisms. Furthermore, the distance between the two sets of bag-clamping assemblies is not adjustable, making it unsuitable for packaging bags of different sizes. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a bag clamping and bag transferring device, which can effectively make way during the return process of the clamping mechanism after the packaging bag is moved, avoid interference with other mechanisms, and facilitate the structural layout of the entire packaging equipment.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: a bag clamping and bag transferring device, including a frame, a sliding frame mounted on the frame, the sliding frame being driven by a first driving mechanism to move back and forth along the frame, two rotating brackets pivotally connected to the sliding frame, the two rotating brackets being driven by a second driving mechanism to rotate back and forth, each rotating bracket being equipped with a set of packaging bag clamping mechanisms, each set of packaging bag clamping mechanisms including a clamping cylinder and two clamping blocks, the clamping cylinder being mounted on the rotating bracket and driving at least one clamping block to clamp or release the packaging bag.

[0006] In a further improvement, the housing of the clamping cylinder is pivotally connected to a rotating bracket, and two clamping blocks are respectively pivotally connected to the rotating bracket. Each clamping block has meshing teeth on an adjacent side. The piston rod of the clamping cylinder is hinged to one of the clamping blocks. The clamping cylinder drives one clamping block to rotate, and then, through the meshing teeth, simultaneously drives both clamping blocks to rotate in opposite directions to clamp or release the packaging bag. This clamping mechanism has a compact structure, fewer cylinders, and is easy to control.

[0007] Preferably, the first drive mechanism includes a first motor and a transmission mechanism mounted on the frame, wherein the first motor drives the sliding frame to move back and forth along the frame through the transmission mechanism.

[0008] A further preferred embodiment of the transmission mechanism includes an active synchronous pulley mounted on one side of the frame, a driven synchronous pulley mounted on the other side of the frame, and a synchronous belt. The synchronous belt connects the active synchronous pulley and the driven synchronous pulley. A portion of the synchronous belt is fixedly connected to a sliding frame. The first motor drive shaft is connected to the active synchronous pulley and can drive the active synchronous pulley to rotate in both directions.

[0009] In a further improvement, the frame is equipped with multiple position sensors to detect the movement of the sliding frame. This facilitates control of the sliding frame's movement, ensuring that the packaging bag moves to the designated position.

[0010] Preferably, the second driving mechanism includes a driving cylinder, a slider, and a first connecting rod. The two ends of the first connecting rod are respectively hinged to a rotating bracket and a slider. The housing of the driving cylinder is fixed to the sliding frame. The slider is movable back and forth on the sliding frame. The piston rod of the driving cylinder is connected to the slider.

[0011] In a further improvement, the sliding frame is equipped with a first buffer positioning post and a second buffer positioning post, which buffer and position the reciprocating movement endpoints of the slider. This reduces noise when the rotating frame switches positions and improves the accuracy of the reciprocating position switching.

[0012] Preferably, the first drive mechanism drives the sliding frame to move back and forth laterally along the frame; the second drive mechanism drives the rotating bracket to rotate back and forth in the vertical and horizontal directions.

[0013] Further improvements include a sliding frame comprising a left sliding frame, a middle sliding frame, and a right sliding frame. The left and right sliding frames are each pivotally connected to a rotating support and equipped with a second drive mechanism. The middle sliding frame is connected to a first drive mechanism and houses a second motor. The drive shaft of the second motor is connected to the middle of a drive rod, enabling the drive rod to rotate in both directions. One end of a second connecting rod is hinged to one end of the drive rod, and the other end is hinged to the left sliding frame. One end of a third connecting rod is hinged to the other end of the drive rod, and the other end is hinged to the right sliding frame. This allows for adjustment of the distance between the left and right sliding frames, i.e., the distance between the two packaging bag clamping mechanisms. This serves two purposes: first, it ensures reliable clamping of both sides of the packaging bag and adapts to different bag sizes, improving the equipment's versatility; second, the rotation of the drive rod straightens the bag opening, facilitating sewing or heat sealing.

[0014] Furthermore, the intermediate sliding frame is also equipped with a reducer, the second motor drive shaft is connected to the reducer input shaft, and the reducer output shaft is fixedly connected to the middle of the drive rod.

[0015] This invention features two pivotally connected rotating supports on a sliding frame. These supports are driven to rotate back and forth by a second drive mechanism. Each rotating support is equipped with a packaging bag clamping mechanism, which includes a clamping cylinder and two clamping blocks. The clamping cylinder is mounted on the rotating support and drives at least one clamping block to clamp or release the packaging bag. Thus, when the packaging bag clamping mechanism moves the bag to a set position, it can rotate in the opposite direction to return to its original position under the drive of the rotating supports. This avoids interference with other mechanisms on the packaging equipment and facilitates the overall structural layout of the packaging equipment. Attached Figure Description

[0016] Figure 1 This is a front perspective view of the prepared clip bag of this utility model;

[0017] Figure 2 This is a rear perspective view of the prepared clip bag of this utility model;

[0018] Figure 3 This is a front perspective perspective view of the present invention, showing the bag returning to its original position after being loosened.

[0019] Figure 4 This is a rear view of the bag returning to its original position after loosening. Detailed Implementation

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

[0021] Figures 1 to 4As shown, a bag clamping and transferring device includes a frame 1, on which a sliding frame 2 is mounted. The sliding frame 2 is driven by a first drive mechanism 4 to move back and forth laterally along the frame 1. Two rotating supports 31 are pivotally connected to the sliding frame 2. The two rotating supports 31 are driven by a second drive mechanism 5 to rotate back and forth in the vertical and horizontal directions, respectively. Each rotating support 31 is equipped with a packaging bag clamping mechanism 3. Each packaging bag clamping mechanism 3 includes a clamping cylinder 32 and two clamping blocks 33. The clamping cylinder 32 is mounted on the rotating support 31 and drives the two clamping blocks 33 to clamp or release the packaging bag 10. As a variation, one clamping block 33 can also be set as fixed, and then the clamping cylinder 32 drives a movable clamping block 33 to cooperate with the fixed clamping block 33 to clamp or release the packaging bag 10.

[0022] In this embodiment, the housing of the clamping cylinder 32 is pivotally connected to the rotating bracket 31, and the two clamping blocks 33 are pivotally connected to the rotating bracket 31 respectively. Each of the two clamping blocks 33 has meshing teeth 331 on an adjacent side. The piston rod of the clamping cylinder 32 is hinged to one of the clamping blocks 33. The clamping cylinder 32 drives one of the clamping blocks 33 to rotate, and then through the meshing of the meshing teeth 331, it simultaneously drives the two clamping blocks 33 to rotate in opposite directions to clamp or release the packaging bag 10.

[0023] The first drive mechanism 4 includes a first motor 41 mounted on the frame 1 and a transmission mechanism. The first motor 41 drives the sliding frame 2 to move back and forth laterally along the frame 1 through the transmission mechanism. The transmission mechanism includes a driving synchronous pulley 42 mounted on one side of the frame 1, a driven synchronous pulley 43 mounted on the other side of the frame 1, and a synchronous belt 44. The synchronous belt 44 connects the driving synchronous pulley 42 and the driven synchronous pulley 43. A portion of the synchronous belt 44 is fixedly connected to the sliding frame 2. The drive shaft of the first motor 41 is connected to the driving synchronous pulley 42 and can drive the driving synchronous pulley 42 to rotate in both directions.

[0024] Furthermore, the sliding frame 2 includes a left sliding frame 21, a middle sliding frame 22 and a right sliding frame 23. The left sliding frame 21, the middle sliding frame 22 and the right sliding frame 23 are all connected to the transverse guide rail installed on the frame 1 by a slider. The left sliding frame 21 and the right sliding frame 23 are respectively pivotally connected to a rotating bracket 31 and equipped with a second drive mechanism 5. The middle sliding frame 22 is connected to the first drive mechanism 4. Specifically, the middle sliding frame 22 is fixedly connected to a part of the synchronous belt 44.

[0025] The intermediate sliding frame 22 is equipped with a second motor 6. The drive shaft of the second motor 6 is connected to the middle of a drive rod 7 and can drive the drive rod 7 to rotate in both directions. One end of a second connecting rod 8 is hinged to one end of the drive rod 7, and the other end of the second connecting rod 8 is hinged to the left sliding frame 21. One end of a third connecting rod 9 is hinged to the other end of the drive rod 7, and the other end of the third connecting rod 9 is hinged to the right sliding frame 23. The intermediate sliding frame 22 is also equipped with a reducer 61. The drive shaft of the second motor 6 is connected to the input shaft of the reducer 61, and the output shaft of the reducer 61 is fixed to the middle of the drive rod 7.

[0026] The second driving mechanism 5 includes a driving cylinder 51, a slider 52 and a first connecting rod 53. The two ends of the first connecting rod 53 are respectively hinged to a rotating bracket 31 and a slider 52. The housing of the driving cylinder 51 is fixed to the sliding frame 2. The slider 52 can move back and forth vertically and is mounted on the sliding frame 2. The piston rod of the driving cylinder 51 is connected to the slider 52.

[0027] The sliding frame 2 is equipped with a first buffer positioning post 54 and a second buffer positioning post 55. The first buffer positioning post 54 and the second buffer positioning post 55 buffer and position the back-and-forth movement endpoints (up and down positions in this example) of the slider 52.

[0028] The frame 1 is equipped with multiple position sensors 11, which are used to detect the movement position of the sliding frame 2. The first motor 41 and the second motor 6 can be servo motors.

[0029] In this embodiment, the packaging bag 10 is in a vertical position, and the two rotating brackets 31 rotate to a horizontal position under the drive of the second driving mechanism 5, as detailed below. Figure 2 As shown, the piston rods of the two drive cylinders 51 extend simultaneously to push the two sliders 52 downward. The two sliders 52 push the two rotating brackets 31 to rotate clockwise to a horizontal state through the two first connecting rods 53. The downward position of the two sliders 52 can be buffered and limited by the two first buffer positioning pins 54.

[0030] Next, the two clamping cylinders 32 of the two sets of packaging bag clamping mechanisms 3 drive a clamping block 33 to rotate, and then through the meshing teeth 331, they simultaneously drive the two clamping blocks 33 to rotate in opposite directions to clamp the two sides of the packaging bag 10; then the first motor 41 of the first drive mechanism 4 actuates, causing the synchronous belt 44 to move, driving the sliding frame 2 (including the left sliding frame 21, the middle sliding frame 22 and the right sliding frame 23) to move laterally along the frame 1 to move the packaging bag 10 to the set position. When the packaging bag 10 (including the material) is heavy, the packaging bag 10 can also be supported by a horizontal conveyor belt and moved synchronously with the sliding frame 2.

[0031] When the positions of the two clamping blocks 33 of the two sets of packaging bag clamping mechanisms 3 do not correspond to the positions or specifications of the two sides of the packaging bag 10, the second motor 6 is started to drive the drive rod 7 to rotate, and then the second connecting rod 8 and the third connecting rod 9 are used to pull or push the left sliding frame 21 and the right sliding frame 23 to adjust the relative distance between them. This also adjusts the spacing between the two sets of packaging bag clamping mechanisms 3, so that the two sets of packaging bag clamping mechanisms 3 can reliably clamp the two sides of the packaging bag 10 and can adapt to packaging bags 10 of different specifications. On the other hand, by driving the drive rod 7 to rotate through the second motor 6, the two sets of packaging bag clamping mechanisms 3 can also straighten the bag opening of the packaging bag 10, making the bag opening of the packaging bag 10 straighter, which is conducive to sealing in subsequent processes.

[0032] When the packaging bag 10 moves to the set position, the two clamping cylinders 32 each drive a clamping block 33 to rotate, and then through the meshing teeth 331, they simultaneously drive the two clamping blocks 33 to rotate in opposite directions to release the packaging bag 10; then, as... Figure 3 , Figure 4 As shown, the piston rods of the two drive cylinders 51 retract simultaneously, pulling the two sliders 52 upward. The two sliders 52 pull the two rotating brackets 31 counterclockwise to the vertical position through the two first connecting rods 53. The upward position of the two sliders 52 can be buffered and limited by the two second buffer positioning pins 55. Then, the first drive mechanism 4 drives the sliding frame 2 (including the left sliding frame 21, the middle sliding frame 22 and the right sliding frame 23) to move laterally back to the position along the frame 1. At this time, since the two sets of packaging bag clamping mechanisms 3 are in the vertical position and move laterally, they can play a good role in making way and avoid interference with other mechanisms.

[0033] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A bag clamping and bag transferring device, comprising a frame, characterized in that: The frame is equipped with a sliding frame, which can move back and forth along the frame by a first drive mechanism. Two rotating brackets are pivotally connected to the sliding frame, and the two rotating brackets are driven to rotate back and forth by a second drive mechanism. Each rotating bracket is equipped with a packaging bag clamping mechanism. Each packaging bag clamping mechanism includes a clamping cylinder and two clamping blocks. The clamping cylinder is installed on the rotating bracket and drives at least one clamping block to clamp or release the packaging bag.

2. The bag clamping and bag transferring device according to claim 1, characterized in that: The housing of the clamping cylinder is pivotally connected to the rotating bracket, and the two clamping blocks are pivotally connected to the rotating bracket respectively. Each of the two clamping blocks has meshing teeth on an adjacent side. The piston rod of the clamping cylinder is hinged to one of the clamping blocks. The clamping cylinder drives one of the clamping blocks to rotate and then drives the two clamping blocks to rotate in opposite directions at the same time through the meshing of the meshing teeth to clamp or release the packaging bag.

3. The bag clamping and bag transferring device according to claim 1, characterized in that: The first drive mechanism includes a first motor and a transmission mechanism mounted on the frame. The first motor drives the sliding frame to move back and forth along the frame through the transmission mechanism.

4. The bag clamping and bag transferring device according to claim 3, characterized in that: The transmission mechanism includes a driving synchronous pulley mounted on one side of the frame, a driven synchronous pulley mounted on the other side of the frame, and a synchronous belt. The synchronous belt connects the driving synchronous pulley and the driven synchronous pulley. A portion of the synchronous belt is fixed to a sliding frame. The first motor drive shaft is connected to the driving synchronous pulley and can drive the driving synchronous pulley to rotate in both directions.

5. The bag clamping and bag transferring device according to claim 1, characterized in that: The frame is equipped with multiple position sensors to detect the movement position of the sliding frame.

6. The bag clamping and bag transferring device according to claim 1, characterized in that: The second driving mechanism includes a driving cylinder, a slider, and a first connecting rod. The two ends of the first connecting rod are respectively hinged to a rotating bracket and a slider. The housing of the driving cylinder is fixed to the sliding frame. The slider can move back and forth on the sliding frame. The piston rod of the driving cylinder is connected to the slider.

7. A bag clamping and bag transferring device according to claim 6, characterized in that: The sliding frame is equipped with a first buffer positioning post and a second buffer positioning post, which buffer and position the sliding block's reciprocating movement endpoints.

8. The bag clamping and bag transferring device according to claim 1, characterized in that: The first drive mechanism drives the sliding frame to move back and forth laterally along the frame; the second drive mechanism drives the rotating bracket to rotate back and forth in the vertical and horizontal directions.

9. A bag clamping and bag transferring device according to any one of claims 1 to 8, characterized in that: The sliding frame includes a left sliding frame, a middle sliding frame, and a right sliding frame. The left and right sliding frames are respectively pivotally connected to a rotating bracket and equipped with a second drive mechanism. The middle sliding frame is connected to a first drive mechanism and is equipped with a second motor. The drive shaft of the second motor is connected to the middle of a drive rod and can drive the drive rod to rotate in both directions. One end of a second connecting rod is hinged to one end of the drive rod, and the other end of the second connecting rod is hinged to the left sliding frame. One end of a third connecting rod is hinged to the other end of the drive rod, and the other end of the third connecting rod is hinged to the right sliding frame.

10. A bag clamping and bag transferring device according to claim 9, characterized in that: The intermediate sliding frame is also equipped with a reducer, the second motor drive shaft is connected to the reducer input shaft, and the reducer output shaft is fixed to the middle of the drive rod.

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