Circulating filling device

Abstract

The utility model discloses a circulating filling device which comprises a base, a vertical rotating frame is pivoted to the base and driven by a first driving mechanism to rotate or rotate intermittently, at least two first supports are installed on the upper portion of the vertical rotating frame, each first support is fixedly connected with a hopper, and a gate is arranged on the lower portion of each hopper. Material filling is realized by opening the gate or material filling is stopped by closing the gate; packaging bag clamping mechanisms are arranged on the vertical rotating frame on the two sides of each gate, and the packaging bags are clamped by the packaging bag clamping mechanisms on the two sides of the gates at the same time when the packaging bags are in a filling state and bag openings of the packaging bags are arranged on the lower portions of the gates in a sleeving mode; after the packaging bags are filled with materials or when the vertical rotating frame rotates to switch the position and is in a bag unloading state in the filling process of the packaging bags, the packaging bag clamping mechanisms on the two sides of the gate loosen the packaging bags at the same time. And each first bracket is driven by a second driving mechanism mounted on the vertical rotating frame to move up and down. According to the utility model, material filling and bag unloading can be simultaneously carried out, and the production efficiency is effectively improved.

Description

Technical Field

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

[0002] Traditional granular material packaging equipment is equipped with a filling device, but the filling operation involves first putting the packaging bag onto the filling tube of the filling device, filling it, and then unloading the bag from the filling tube. Filling and unloading cannot be carried out simultaneously, which limits production efficiency.

[0003] To improve filling efficiency, a Chinese utility model patent with patent number ZL201821288213.9 and titled "A Dual Filling Device" was published on March 22, 2019. The device includes two sets of parallel filling channels, a lifting plate, a lifting track, a lifting cylinder, two bag-pressing blocks, and two bag-pressing cylinders. Each set of filling channels includes a discharge cylinder, a transition hopper, a filling pipe, and a meter box. The transition hopper is connected to the discharge port of the discharge cylinder and is located below the discharge cylinder. The filling pipe connects to the outlet of the transition hopper and is positioned below it. The rice container connects to the outlet of the filling pipe and is positioned below it as well. A lifting plate is fixedly connected to the two transition hoppers and the two filling pipes and is positioned between them. The lifting plate is connected to a lifting rail and can be driven by a lifting cylinder to rise or fall along the rail. Two bag-pressing blocks are fixedly connected to the ends of the piston rods of the two bag-pressing cylinders and can be driven by the cylinders to push and press against the two filling pipes. This device has two sets of filling channels, resulting in fast filling speed and significantly improved filling efficiency. However, this filling device cannot achieve simultaneous filling and unloading operations. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a circulating filling device that enables filling and unloading of bags to be carried out simultaneously, thereby effectively improving production efficiency.

[0005] To achieve the above objectives, the technical solution of this utility model is: a circulating filling device, including a base, a vertical rotating frame pivotally connected to the base, the vertical rotating frame being driven by a first driving mechanism to rotate intermittently or rotate back, at least two first supports that can move vertically up and down are installed on the upper part of the vertical rotating frame, a hopper is fixedly connected to each first support, and a gate is provided at the lower part of each hopper, filling is realized by opening the gate or stopping filling by closing the gate;

[0006] Each gate is equipped with a packaging bag clamping mechanism on the vertical rotating frame on both sides. When the packaging bag is in the filling state and the opening of the packaging bag is covered by the lower part of the gate, the packaging bag clamping mechanism on both sides of the gate clamps the packaging bag at the same time. After the packaging bag is filled or when the packaging bag is in the unloading state by rotating the vertical rotating frame during the filling process, the packaging bag clamping mechanism on both sides of the gate releases the packaging bag at the same time.

[0007] Preferably, the gate includes two gate bodies hinged at the bottom of the hopper. The two gate bodies are driven by a first cylinder to rotate in opposite directions. The gate is closed when the two gate bodies approach each other and opened when the two gate bodies spread outwards.

[0008] Further improvements include two first hinge seats fixed on each first bracket, a second hinge seat fixed on the outside of each gate body, the housing of each first cylinder hinged to a first hinge seat, and the piston rod of each first cylinder hinged to a second hinge seat.

[0009] Each gate body is also fixedly equipped with a third hinge seat on its outer side. Each second hinge seat is also hinged to the housing of a second cylinder. Each third hinge seat is hinged to one hinge position of a first clamping block. The piston rod of each second cylinder is hinged to the other hinge position of a first clamping block. The second cylinder drives the first clamping block to rotate, causing the first clamping block to clamp one side of the bag opening onto the outer surface of the gate body or to release one side of the bag opening. This not only facilitates driving the two gate bodies closer or further apart to open or close the gate, but also clamps the side of the bag opening in the middle onto the outer surface of the gate body to prevent leakage and bag detachment.

[0010] Further improvements include a double-stroke cylinder for the first cylinder, which allows for two opening states when the gate is opened: a large opening and a small opening. This accommodates both large and small packaging bags, improving the equipment's versatility and filling efficiency. When the two gate bodies approach each other, they form a pointed cone shape to facilitate insertion into the bag opening or the fitting of the packaging bag.

[0011] Preferably, the packaging bag clamping mechanism includes a second bracket, a third cylinder, and two second clamping blocks. The second bracket is fixedly connected to the vertical rotating frame or can move back and forth relative to the vertical rotating frame.

[0012] The upper parts of the two second clamping blocks are pivotally connected to the second bracket, and each of the two second clamping blocks has meshing teeth on opposite sides. The housing of the third cylinder is hinged to the second bracket, and the piston rod of the third cylinder is hinged to the lower part of one of the second clamping blocks. The third cylinder drives one clamping block to rotate, and then, through the meshing of the meshing teeth, simultaneously drives the two second clamping blocks to rotate in opposite directions to clamp or release the packaging bag. This clamping mechanism has a compact structure, requires fewer cylinders, and is easy to control.

[0013] Further improvements include a fourth cylinder mounted on the vertical rotating frame when the second support moves back and forth relative to it. This fourth cylinder connects to the second support, causing it to move back and forth relative to the vertical rotating frame to straighten or loosen the bag opening. Both second clamping blocks are equipped with vacuum detection pipes connected to the clamping surfaces to detect whether the bag opening is properly clamped. This structure offers the following advantages: 1. It prevents the bag clamping mechanism from filling the bag before it is properly clamped, thus preventing malfunctions. 2. Straightening the bag opening during filling effectively prevents leakage during filling or when the vertical rotating frame rotates to different positions. 3. In the unloading state, straightening the bag opening makes it more even, facilitating subsequent processes such as sewing or heat sealing.

[0014] In a further improvement, each first support is moved up and down by a second drive mechanism mounted on a vertical rotating frame, preferably a cylinder. This allows the gate to be inserted into the opening of the packaging bag for reliable filling, or for the gate to be detached from the packaging bag for reliable clearance at the unloading station.

[0015] Preferably, the first drive mechanism includes a first motor, a reducer, a drive gear, and a driven gear. The reducer is fixedly connected to the base. The drive shaft of the first motor is connected to the input shaft of the reducer. The output shaft of the reducer is fixedly connected to the drive gear. The driven gear is fixedly connected to the vertical rotating frame. The drive gear and the driven gear mesh with each other.

[0016] In a further improvement, at least two third supports are installed in the middle of the vertical rotating frame. Each third support is equipped with a sixth cylinder, and each sixth cylinder is connected to a support with a horizontal upper surface. The support can move up and down under the drive of the sixth cylinder to tap or support the packaging bag. This tapping of the packaging bag ensures that the material inside the bag is more compacted. When the packaging bag is large or heavy, the support can effectively prevent the bag from falling off, thus ensuring the reliability of the entire working process.

[0017] Furthermore, the third bracket is connected together and driven by a third drive mechanism to adjust its vertical position. This allows adjustment of the relative position between the support and the packaging bag to accommodate different sizes of packaging bags, thereby improving the versatility of the equipment.

[0018] Preferably, the third drive mechanism includes a second motor mounted on a vertical rotating frame, a vertical screw pivotally connected to the vertical rotating frame, and a nut fixed to the third bracket. The drive shaft of the second motor drives the vertical screw to rotate through a transmission mechanism. The vertical screw cooperates with the nut to adjust the vertical position of the third bracket. The sixth cylinder is a double-stroke cylinder, which is more adaptable to packaging bags of different specifications and provides sufficient clearance when used with an automatic bag feeder.

[0019] This invention features at least two first supports mounted on the upper part of the vertical rotating frame, each with a hopper fixed to it. Each hopper has a gate at its lower part, allowing filling or stopping of the filling process by opening or closing the gate. A bag-holding mechanism is installed on both sides of the vertical rotating frame. When the bag is in the filling state and its opening is over the lower part of the gate, the bag-holding mechanisms on both sides simultaneously clamp the bag. After filling or during the filling process, when the vertical rotating frame rotates to the unloading state, the bag-holding mechanisms on both sides simultaneously release the bag. This allows one set of hoppers and gates to fill the bag while another set of hoppers and gates unloads it, meaning the filling and unloading processes can be performed simultaneously, effectively improving production efficiency. Furthermore, rotating and switching positions during the filling process can further save packaging time and improve production efficiency. Attached Figure Description

[0020] Figure 1 This is the front view of this utility model;

[0021] Figure 2 This is the left view of this utility model;

[0022] Figure 3 This is a perspective view of the utility model;

[0023] Figure 4 yes Figure 1 Enlarged view of point A. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0025] Figures 1 to 4 As shown, a circulating feeding device includes a base 1, on which a vertical rotating frame 2 is pivotally connected. The vertical rotating frame 2 is driven by a first driving mechanism 3 to rotate intermittently or rotate back. Two first supports 4 that can move vertically up and down are installed on the upper part of the vertical rotating frame 2. The two first supports 4 are symmetrically installed with respect to the vertical rotating frame 2. A hopper 5 is fixedly connected to each first support 4. A gate 6 is provided at the lower part of each hopper 5. Feeding is realized by opening the gate 6 or stopping the feeding by closing the gate 6.

[0026] The first drive mechanism 3 includes a first motor 31, a reducer 32, a drive gear 33, and a driven gear 34. The reducer 32 is fixedly connected to the base 1. The drive shaft of the first motor 31 is connected to the input shaft of the reducer 32. The output shaft of the reducer 32 is fixedly connected to the drive gear 33. The driven gear 34 is fixedly connected to the vertical rotating frame 2. The drive gear 33 and the driven gear 34 mesh with each other. In this way, the first drive mechanism 3 can drive the vertical rotating frame 2 to rotate to switch the position of the hopper 5, so that the hopper 5 can be in the unloading position corresponding to the weighing device of the packaging equipment.

[0027] Packaging bag clamping mechanism 7 is installed on the vertical rotating frame 2 on both sides of each gate 6. When the packaging bag 10 is in the filling state and the bag opening is covered by the lower part of the gate 6, the packaging bag clamping mechanism 7 on both sides of the gate 6 clamps the packaging bag 10 at the same time. After the packaging bag 10 is filled or when the vertical rotating frame 2 rotates to switch positions to the unloading state during the filling process, the packaging bag clamping mechanism 7 on both sides of the gate 6 releases the packaging bag 10 at the same time.

[0028] The gate 6 includes two gate bodies 61 that are hinged to the lower part of the hopper 5. Each gate body 61 is driven to rotate by a first cylinder 62. When the two first cylinders 62 drive the two gate bodies 61 at the same time, the two gate bodies 61 rotate in opposite directions. When the two gate bodies 61 approach each other, the gate 6 is closed. When the two gate bodies 61 spread out, the gate 6 is opened.

[0029] Two first hinge seats 41 are fixed on each first bracket 4, and a second hinge seat 63 is fixed on the outside of each gate body 61. The housing of each first cylinder 62 is hinged to a first hinge seat 41, and the piston rod of each first cylinder 62 is hinged to a second hinge seat 63.

[0030] Each gate body 61 is also fixedly provided with a third hinge seat 64 on its outer side. Each second hinge seat 63 is also hinged to the housing of a second cylinder 65. Each third hinge seat 64 is hinged to one hinge position of a first clamping block 66. The piston rod of each second cylinder 65 is hinged to the other hinge position of a first clamping block 66. The second cylinder 65 drives the first clamping block 66 to rotate, so that the first clamping block 66 clamps the middle side of the bag opening of the packaging bag 10 on the outer side of the gate body 61 or releases the middle side of the bag opening of the packaging bag 10. The first clamping block 66 is provided with a vacuum detection pipe 661 to detect whether the middle side of the bag opening of the packaging bag 10 is clamped, so as to prevent leakage during filling.

[0031] The first cylinder 62 is a double-stroke cylinder, so that when the gate 6 is opened, there are two states: a large opening and a small opening, so as to correspond to the large packaging bag 10 and the small packaging bag 10, thereby improving the versatility of the equipment and the filling efficiency; when the two gate bodies 61 are close to each other, they form a pointed cone shape, so as to facilitate the insertion of the packaging bag 10 or the fitting of the packaging bag 10.

[0032] The packaging bag clamping mechanism 7 includes a second bracket 71, a third cylinder 72, and two second clamping blocks 73, which are combined with Figure 1 , Figure 4 As shown, the second support 71 can move back and forth longitudinally relative to the vertical rotating frame 2. The vertical rotating frame 2 is provided with a longitudinal track. The second support 71 moves back and forth longitudinally by means of a slider cooperating with the longitudinal track. As a variation, the second support 71 and the vertical rotating frame 2 can also be fixedly connected, but this is only suitable for packaging bags 10 that are relatively fixed and whose openings cannot be straightened.

[0033] The upper parts of the two second clamping blocks 73 are pivotally connected to the second bracket 71, respectively. Each of the two second clamping blocks 73 has meshing teeth 731 on opposite sides. The housing of the third cylinder 72 is hinged to the second bracket 71, and the piston rod of the third cylinder 72 is hinged to the lower part of one of the second clamping blocks 73. The third cylinder 72 drives one of the second clamping blocks 73 to rotate, and then, through the meshing of the meshing teeth 731, simultaneously drives both second clamping blocks 73 to rotate in opposite directions to clamp or release the packaging bag 10. Each of the two second clamping blocks 73 is equipped with a vacuum detection pipe 731 connected to the clamping surface to detect whether the bag opening is clamped, preventing malfunction.

[0034] When the second support 71 can move back and forth relative to the vertical rotating frame 2, the vertical rotating frame 2 is also equipped with a fourth cylinder 74. The fourth cylinder 74 is connected to the second support 71. The fourth cylinder 74 drives the second support 71 to move back and forth relative to the vertical rotating frame 2 to straighten or loosen the opening of the packaging bag 10. Specifically, the housing of the fourth cylinder 74 is fixed to the vertical rotating frame 2, and the piston rod of the fourth cylinder 74 is connected to the second support 71. The fourth cylinder 74 is a double-stroke cylinder to accommodate packaging bags 10 of different sizes.

[0035] The first support 4 is driven to move up and down by a second drive mechanism mounted on the vertical rotating frame 2. The second drive mechanism is preferably two fifth cylinders 42. The first support 4 moves up and down by a slider and a vertical track fixed on the vertical rotating frame 2. The housings of the two fifth cylinders 42 are fixed to the vertical rotating frame 2, and the piston rods of the two fifth cylinders 42 are fixed to the first support 4 to drive the first support 4 to move up and down.

[0036] The vertical rotating frame 2 is equipped with two third supports 8 in the middle. Each third support 8 is equipped with a sixth cylinder 81, and each sixth cylinder 81 is connected to a support 82 with a horizontal upper surface. The support 82 can move up and down under the action of the sixth cylinder 81 to tap or support the packaging bag 10. The support 82 moves up and down through a slider and a vertical track fixed on the vertical rotating frame 2. Specifically, the housing of the sixth cylinder 81 is fixed to the third support 8, and the piston rod of the sixth cylinder 81 is connected to the support 82.

[0037] The third support 8 is connected together and driven by the third drive mechanism 9 to adjust its vertical position. The third support 8 moves up and down by means of a slider and a vertical track fixed on the vertical rotating frame 2.

[0038] The third drive mechanism 9 includes a second motor 91 mounted on the vertical rotating frame 2, a vertical screw 92 pivotally connected to the vertical rotating frame 2, and a nut 83 fixed to the third support 8. The drive shaft of the second motor 91 drives the vertical screw 92 to rotate through a transmission mechanism. The vertical screw 92 cooperates with the nut 83 to adjust the vertical position of the third support 8. The transmission mechanism includes a drive sprocket 93 fixed to the second motor 91 and a driven sprocket 94 fixed to the vertical screw 92. The drive sprocket 93 and the driven sprocket 94 are connected by a chain 95.

[0039] The sixth cylinder 81 is a double-stroke cylinder to accommodate packaging bags 10 of different sizes and specifications, and it has sufficient clearance when used with an automatic bag feeding mechanism.

[0040] In this embodiment, during operation at the filling station, such as when filling rice, two first cylinders 62 simultaneously drive two gate bodies 61 to rotate in opposite directions. When the two gate bodies 61 approach each other, the gate 6 closes. The weighing device of the packaging equipment feeds a fixed amount of rice into the hopper 5. The bag opening of the packaging bag 10 is placed under the gate 6 by an automatic bag feeder or manually. The third cylinders 72 of the two packaging bag clamping mechanisms 7 drive a second clamping block 73 to rotate, and through the meshing teeth 731, they simultaneously drive the two second clamping blocks 73 to rotate in opposite directions to clamp the two sides of the packaging bag 10. Two fifth cylinders 42 drive the first support 4, the hopper 5, and the gate 6 to move down so that the lower part of the gate 6 can be reliably inserted into the bag opening of the packaging bag 10. The second cylinder 65 operates simultaneously, driving the two first clamping blocks 66 to clamp the two sides of the middle position of the bag opening of the packaging bag 10 to the outer surfaces of the two gate bodies 61. The two fourth cylinders 74 drive the two second supports 71 to move away from each other relative to the vertical rotating frame 2 to straighten the bag opening of the packaging bag 10 and prevent leakage during feeding. During filling, the two first cylinders 62 drive the two gate bodies 61 to rotate in opposite directions, causing the two gate bodies 61 to open the gate 6 to fill the packaging bag 10. During the filling process, the sixth cylinder 81 drives the support 82 to move up and down and tap the lower end of the packaging bag 10 to make the filling of the packaging bag 10 more compact. After filling is completed, the gate 6 closes, and the support 82 can also help support the packaging bag 10.

[0041] To further improve production efficiency, during the filling process, the vertical rotating frame 2 of the packaging bag 10 rotates 180° to switch positions under the drive of the first driving mechanism 3. After filling, the packaging bag 10 moves to the unloading station. During unloading, the two second cylinders 65 act simultaneously, driving the two first clamping blocks 66 to rotate in opposite directions to loosen the two sides of the middle position of the bag opening of the packaging bag 10. The two fifth cylinders 42 drive the first support 4, hopper 5, and gate 6 to move upward and detach from the packaging bag. After the bag receiving mechanism of the subsequent process or after manual bag receiving, the two second clamping blocks 73 of the two sets of packaging bag clamping mechanisms 7 rotate in opposite directions to loosen the two sides of the packaging bag 10, thus facilitating the unloading of the packaging bag filled with rice. If necessary, before the two sets of packaging bag clamping mechanisms 7 loosen the packaging bag 10, the two fourth cylinders 74 can also drive the two second supports 71 to move away from each other relative to the vertical rotating frame 2 and straighten the bag opening of the packaging bag 10 to facilitate the sealing of the bag opening in the subsequent process.

[0042] Therefore, in this embodiment, one hopper 5 and the gate 6 can be in the filling position while the other hopper 5 and the gate 6 can be in the unloading position, and filling and unloading can be carried out simultaneously, which effectively improves production efficiency.

[0043] 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 circulating filling device, comprising a base, characterized in that: A vertical rotating frame is pivotally connected to the base. The vertical rotating frame is driven by a first drive mechanism to rotate intermittently or rotate back. At least two first supports are installed on the upper part of the vertical rotating frame. A hopper is fixed on each first support. A gate is provided at the bottom of each hopper. The filling can be achieved by opening the gate or the filling can be stopped by closing the gate. Packaging bag clamping mechanisms are installed on the vertical rotating frames on both sides of each gate. When the packaging bag is in the filling state and the bag opening is covered by the lower part of the gate, the packaging bag clamping mechanisms on both sides of the gate clamp the packaging bag at the same time. After the packaging bag is filled or when the vertical rotating frame rotates to switch positions to the unloading state during the filling process, the packaging bag clamping mechanisms on both sides of the gate release the packaging bag at the same time.

2. The circulating feeding device according to claim 1, characterized in that: The gate includes two gate bodies hinged to the lower part of the hopper. The two gate bodies are driven by a first cylinder to rotate in opposite directions. The gate is closed when the two gate bodies are close to each other and opened when the two gate bodies are spread apart.

3. The circulating feeding device according to claim 2, characterized in that: Two first hinge seats are fixed on each first bracket, a second hinge seat is fixed on the outside of each gate body, the housing of each first cylinder is hinged to a first hinge seat, and the piston rod of each first cylinder is hinged to a second hinge seat. Each gate body is also fixed with a third hinge seat on the outside. Each second hinge seat is also hinged to the housing of a second cylinder. Each third hinge seat is hinged to one hinge position of a first clamping block. The piston rod of each second cylinder is hinged to another hinge position of a first clamping block. The second cylinder drives the first clamping block to rotate so that the first clamping block clamps the bag opening side of the packaging bag on the outer surface of the gate body or releases the bag opening side of the packaging bag.

4. The circulating feeding device according to claim 3, characterized in that: The first cylinder is a double-stroke cylinder; when the two brake bodies approach each other, they form a pointed cone shape.

5. The circulating feeding device according to claim 1, characterized in that: The packaging bag clamping mechanism includes a second bracket, a third cylinder, and two second clamping blocks. The second bracket is fixedly connected to the vertical rotating frame or can move back and forth relative to the vertical rotating frame. The upper parts of the two second clamping blocks are pivotally connected to the second bracket, and the two second clamping blocks are provided with meshing teeth on opposite sides. The housing of the third cylinder is hinged to the second bracket, and the piston rod of the third cylinder is hinged to the lower part of one of the second clamping blocks. The third cylinder drives one clamping block to rotate and then drives the two second clamping blocks to rotate in opposite directions through the meshing teeth to clamp or release the packaging bag.

6. The circulating feeding device according to claim 5, characterized in that: When the second support can move back and forth relative to the vertical rotating frame, the vertical rotating frame is also equipped with a fourth cylinder. The fourth cylinder is connected to the second support. The fourth cylinder drives the second support to move back and forth relative to the vertical rotating frame to straighten or loosen the opening of the packaging bag. Both second clamping blocks are equipped with vacuum detection pipes that communicate with the clamping surface to detect whether the bag opening is clamped.

7. The circulating feeding device according to claim 1, characterized in that: Each first support can move up and down via a second drive mechanism mounted on a vertical rotating frame.

8. The circulating feeding device according to claim 1, characterized in that: The first drive mechanism includes a first motor, a reducer, a drive gear, and a driven gear. The reducer is fixedly connected to the base. The drive shaft of the first motor is connected to the input shaft of the reducer. The output shaft of the reducer is fixedly connected to the drive gear. The driven gear is fixedly connected to the vertical rotating frame. The drive gear and the driven gear mesh with each other.

9. A circulating filling device according to any one of claims 1 to 8, characterized in that: At least two third supports are installed in the middle of the vertical rotating frame. Each third support is equipped with a sixth cylinder. Each sixth cylinder is connected to a support with a horizontal upper surface. The support can move up and down under the drive of the sixth cylinder to tap or support the packaging bag.

10. A circulating feeding device according to claim 9, characterized in that: The third brackets are connected together and driven by a third drive mechanism to adjust their vertical position; The third drive mechanism includes a second motor mounted on a vertical rotating frame, a vertical screw pivotally connected to the vertical rotating frame, and a nut fixed to the third bracket. The drive shaft of the second motor drives the vertical screw to rotate through a transmission mechanism. The vertical screw cooperates with the nut to adjust the vertical position of the third bracket. The sixth cylinder is a double-stroke cylinder.

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