Bag lifting, feeding and bag falling unhooking device for ton bag

Abstract

The utility model relates to packaging machinery, in particular to a bag lifting, feeding and bag falling unhooking device for a ton bag, and solves the problems that after an existing ton bag is filled with materials, a lifting belt needs to be taken out from a hook manually, and an air cylinder shaft is prone to deformation due to the fact that an air cylinder used for lifting the hook is difficult to synchronize. The movable ends of the lifting air cylinders and the mounting frame are hinged together through the fisheye connectors, the ball bearings of the fisheye connectors can freely rotate in the shells of the fisheye connectors in multiple directions, and if part of the lifting air cylinders are not synchronized, compensation is carried out through rotation of the ball bearings of the fisheye connectors; and an unhooking air cylinder of the unhooking assembly is connected with an unhooking hook, unhooking of the hanging belt is completed through stretching and retracting of the movable end of the unhooking air cylinder, and manual taking-out of the hanging belt is not needed.

Description

Technical Field

[0001] This utility model relates to packaging machinery, specifically to a bag feeding, bag dropping and hook release device for ton bags. Background Technology

[0002] When packaging materials such as powders or granules in large bags, ton bags are generally used. The traditional operation process is to manually put the bag opening of the ton bag onto the bag clamp located at the discharge port of the hopper, and then the bag clamp works to clamp the bag opening for feeding. However, when the ton bag is full of material, relying solely on the bag clamp to fix the ton bag can easily cause it to tilt, which can lead to the bag tipping over.

[0003] Therefore, some ton bag packing devices are equipped with hooks to hold the lifting straps around the ton bag. After the worker securely hooks the ton bag onto the hooks, the bag opening is then placed onto the bag clamp. The clamp clamps the bag opening, allowing the material to be loaded into the ton bag. A cylinder then lifts the hooks to open the ton bag, allowing more material to be filled. The hooks enhance the stability of the ton bag during packing. Once full, the cylinder lowers, the worker removes the lifting straps from the hooks, and the packed ton bag is transported away by a conveyor.

[0004] However, existing packaging devices have the following problems:

[0005] 1) After each ton bag is full, the worker needs to manually remove the sling from the hook before the conveyor can transport the ton bag away. If the worker does not remove the sling in time, the conveyor will start and the ton bag will move the hook, which will pull the cylinder and cause the cylinder shaft to break.

[0006] 2) To accommodate the lifting straps of ton bags, there are usually 4 hooks, which are arranged in a rectangular shape on the hook frame. In order to drive the hook frame, multiple cylinders are usually used. The cylinder shafts of the cylinders are directly connected to the hook frame. When the hook frame is raised and lowered, it is difficult for multiple cylinders to be completely synchronized, which makes it difficult to ensure that the hook frame is horizontal. This will cause the cylinder shafts of some cylinders to be continuously subjected to external forces that are not along their axial direction, which can easily cause deformation after long-term use. Utility Model Content

[0007] The purpose of this invention is to solve the technical problem that after a ton bag is filled with materials, the lifting strap needs to be manually removed from the hook, and the cylinder used for lifting and lowering the hook is difficult to synchronize, which causes the cylinder shaft to easily deform. The invention provides a bag lifting, feeding, bag lowering and hook unhooking device for ton bags.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A device for feeding, dropping, and unhooking assemblies in ton bags is characterized by:

[0010] Includes a fixed hanger, lifting cylinder, mounting bracket, and unhooking assembly;

[0011] There are four lifting cylinders, which are arranged in a rectangular shape at the bottom of the fixed hanger. The fixed end of the lifting cylinder is hinged to the fixed hanger, and the movable end is hinged to the mounting bracket through a fisheye joint.

[0012] There are four unhooking assemblies, which are arranged in a rectangular shape on the mounting frame. Each unhooking assembly includes an unhooking frame, an unhooking cylinder, and an unhooking mechanism.

[0013] The unhooking frame is fixed on the mounting frame. The middle part of the hook handle of the unhooking device is hinged to the unhooking frame. The unhooking cylinder is located on the side away from the hook opening of the unhooking device, and the fixed end of the unhooking cylinder is hinged to the unhooking frame, while the movable end is hinged to the end of the hook handle of the unhooking device.

[0014] Furthermore, the mounting bracket includes two first mounting rods and two second mounting rods;

[0015] Two first mounting rods are arranged in parallel, and each first mounting rod is hinged to two lifting cylinders located on the same side through a fisheye joint;

[0016] Two second mounting rods are disposed between two first mounting rods, and the length direction of the second mounting rods is perpendicular to the length direction of the first mounting rods. The two ends of the second mounting rods are respectively fixed to the side walls of the two first mounting rods.

[0017] The unhooking bracket is fixed to the first mounting rod.

[0018] Furthermore, the unhooking frame includes a fixing tube and a pin fixing frame;

[0019] Both the first mounting rod and the fixing tube are rectangular tubes. Multiple mounting holes are opened horizontally through the side wall of the fixing tube. The multiple mounting holes are arranged vertically. The shape of each mounting hole is adapted to the shape of the first mounting rod. The fixing tube is sleeved on the first mounting rod through the mounting holes.

[0020] A fastening screw is provided on the side wall of the fixed tube on one side where no mounting hole is opened, and the fastening screw abuts against the first mounting rod;

[0021] The pin fixing bracket includes a first part and a second part, which are arranged in parallel and both are fixed to the bottom of the fixing tube. A first pin and a second pin are arranged between the first part and the second part. The fixed end of the unhooking cylinder is hinged to the first pin, and the middle part of the unhooking hook handle is hinged to the second pin.

[0022] Furthermore, the unhooking assembly also includes a stop hook;

[0023] The stop hook is positioned at the hook opening after disengagement;

[0024] A third pin is provided between the first split body and the second split body. The stop hook is rotatably mounted on the third pin, and the end of the stop hook abuts against the inclined surface of the hook opening for disengagement.

[0025] Furthermore, the first mounting rod of the mounting bracket is provided with a pivot, and the fisheye connector is hinged to the first mounting rod through the pivot.

[0026] Furthermore, the fixed hanger includes a rectangular frame base and four uprights located at the four corners of the base;

[0027] The fixed end of the lifting cylinder is hinged to the base frame.

[0028] Furthermore, a fixing pin is provided radially through the rotating shaft, and the fixing pin is located on the outside of the fisheye joint.

[0029] Compared with the prior art, the beneficial effects of this utility model are:

[0030] (1) The present invention provides a bag feeding and unhooking device for ton bags. The movable end of the lifting cylinder is hinged to the mounting frame through a fisheye joint. The ball bearing of the fisheye joint can rotate freely in multiple directions within its housing. If some of the lifting cylinders are not synchronized, the rotation of the ball bearing of the fisheye joint is used to compensate and prevent the cylinder shaft of the lifting cylinder from deforming. The unhooking cylinder of the unhooking assembly is connected to the unhooking assembly. The unhooking of the sling is completed by the extension and retraction of the movable end of the unhooking cylinder, without the need for manual removal.

[0031] (2) The present invention provides a hook-off frame for a bag feeding and unhooking device for ton bags, which includes a fixed tube and a pin fixing frame. Multiple mounting holes are opened horizontally through the side wall of the fixed tube. The multiple mounting holes are evenly distributed vertically. The shape of each mounting hole is adapted to the shape of the first mounting rod. The fixed tube is sleeved on the first mounting rod through the mounting holes. In this way, the height of the entire hook-off assembly can be adjusted through different mounting holes to adapt to ton bags of different specifications.

[0032] (3) The present invention provides a bag feeding and bag unhooking device for ton bags, which is also equipped with a stop hook as a safety measure to prevent the sling from accidentally coming off after being hooked.

[0033] (4) The present invention provides a bag feeding and bag unhooking device for ton bags. A fixing pin is provided radially on the rotating shaft that is hinged to the fish eye joint, and the fixing pin is located on the outside of the fish eye joint. This can prevent the fish eye joint from accidentally coming off the rotating shaft and ensure safety. Attached Figure Description

[0034] Figure 1This is a three-dimensional structural schematic diagram of an embodiment of a bag feeding, bag dropping and hook unhooking device for ton bags according to the present invention;

[0035] Figure 2 This is a partial enlarged view of an embodiment of the present utility model;

[0036] Figure 3 This is a three-dimensional structural diagram of the unhooking component in an embodiment of the present utility model;

[0037] Figure 4 This is a schematic diagram showing the positions of the unhooking device, the blocking hook, and the unhooking cylinder in an embodiment of this utility model;

[0038] Figure 5 This is a schematic diagram showing the present invention in use.

[0039] The annotations in the attached figures are explained as follows:

[0040] 1-Fixed hanger, 11-Base frame, 12-Column; 2-Lifting cylinder, 21-Fisheye connector; 3-Mounting frame, 31-First mounting rod, 32-Second mounting rod, 33-Rotating shaft; 4-Unhooking assembly, 41-Unhooking frame, 411-Fixed pipe, 412-First split body, 413-Second split body; 42-Unhooking cylinder, 43-Unhooking, 44-First pin, 45-Second pin, 46-Third pin, 47-Block hook; 5-Feeding hopper mounting frame, 6-Feeding hopper, 7-Bag clamp, 8-Conveyor. Detailed Implementation

[0041] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0042] Reference Figures 1-5 The present invention provides a decoupling device for ton bags, comprising a fixed hanger 1, a lifting cylinder 2, a mounting frame 3, and a decoupling assembly 4.

[0043] The fixed hanger 1 includes a rectangular frame base 11 and four uprights 12 located at the four corners of the base 11. There are four lifting cylinders 2, arranged in a rectangular pattern at the bottom of the base 11. Their fixed ends are hinged to the base 11, and their movable ends are hinged to the mounting bracket 3 via fisheye connectors 21. The structure of the fisheye connector 21 is as follows... Figure 2 As shown, it is threadedly mounted on the movable end of the lifting cylinder 2.

[0044] The structure of mounting bracket 3 is as follows: Figure 1 , Figure 2As shown, the mounting frame 3 includes two first mounting rods 31 and two second mounting rods 32. The two first mounting rods 31 are arranged in parallel, and the two second mounting rods 32 are positioned between the two first mounting rods 31, with the length direction of the second mounting rods 32 perpendicular to the length direction of the first mounting rods 31. The two ends of the second mounting rods 32 are welded to the side walls of the two first mounting rods 31, respectively. This makes the entire mounting frame 3 a frame structure, resulting in greater stability. For ease of welding, both the first mounting rods 31 and the second mounting rods 32 are made of rectangular tubing. Each first mounting rod 31 is hinged to two lifting cylinders 2 located on the same side via a fisheye joint 21. To facilitate the hinged connection, a rotating shaft 33 is provided on the first mounting rod 31. The fisheye joint 21 is hinged to the rotating shaft 33, and a fixing pin is radially inserted through the rotating shaft 33. The fixing pin is located on the outside of the fisheye joint 21 to prevent the fisheye joint 21 from disengaging from the rotating shaft 33. This achieves the hinged connection of the movable end of the lifting cylinder 2 to the mounting frame 3 via the fisheye joint 21.

[0045] The ball bearing of the fisheye connector 21 can rotate freely in multiple directions within its housing. If some of the lifting cylinders 2 are not synchronized, the rotation of the ball bearing of the fisheye connector 21 will compensate for this, preventing the cylinder shaft of the lifting cylinder 2 from being pulled and deformed.

[0046] Four release assemblies 4 are provided to cooperate with the lifting sling of the ton bag. The four release assemblies 4 are arranged in a rectangle on the mounting frame 3. Each release assembly 4 includes a release frame 41, a release cylinder 42, and a release hook 43. The release frame 41 is fixed to the first mounting rod 31 of the mounting frame 3. The structure of the release assembly 4 is as follows: Figure 3 , Figure 4 As shown, the unhooking frame 41 includes a fixed tube 411 and a pin fixing bracket. The fixed tube 411 is a rectangular tube, and multiple mounting holes are horizontally through its side wall. These mounting holes are evenly distributed vertically, and the shape of each mounting hole is adapted to the shape of the first mounting rod 31. The fixed tube 411 is fitted onto the first mounting rod 31 through the mounting holes. The height of the unhooking assembly 4 can be adjusted by using mounting holes of different heights to accommodate ton bags of different sizes.

[0047] The hook release frame 41 can only be fitted onto the first mounting rod 31 through the mounting hole, and its position is not fixed. During use, the hook release frame 41 will move along the length of the first mounting rod 31. Therefore, a through hole is opened on the side wall of the fixing tube 411 on one side where the mounting hole is not opened. A nut is installed in the through hole, and a fastening screw is screwed into the nut. The fastening screw abuts against the first mounting rod 31 to fix the position of the entire hook release assembly 4. Moreover, this fixing method allows the position of the hook release assembly 4 to be flexibly adjusted to adapt to different specifications of ton bags.

[0048] The pin fixing bracket is mainly used to fix the unhooking cylinder 42 and the unhooking 43. It includes a first part 412 and a second part 413, which are arranged in parallel and fixed to the bottom of the fixing tube 411. A first pin 44 and a second pin 45 are arranged between the first part 412 and the second part 413. The unhooking cylinder 42 is located on the side opposite to the hook opening of the unhooking 43. The fixed end of the unhooking cylinder 42 is hinged to the first pin 44, and the movable end is hinged to the end of the hook handle of the unhooking 43. The middle part of the hook handle of the unhooking 43 is hinged to the second pin 45. Through the first pin 44 and the second pin 45, the fixed end of the unhooking cylinder 42 and the unhooking frame 41 are respectively hinged, as well as the middle part of the hook handle of the unhooking 43 and the unhooking frame 41.

[0049] To prevent the sling of the ton bag from slipping off the hook 43 when the movable end of the lifting cylinder 2 retracts, the hook assembly 4 also includes a stop hook 47. The stop hook 47 is located at the hook opening of the hook 43. A third pin 46 is provided between the first part 412 and the second part 413. The stop hook 47 is rotatably mounted on the third pin 46, and the end of the stop hook 47 abuts against the inclined surface of the hook opening of the hook 42. In this way, the stop hook 47 can keep the sling inside the hook opening.

[0050] Figure 5 This is a schematic diagram of the present invention in use. It can be seen that the fixed hanger 1 is set on the hopper mounting frame 5, the four columns 12 are connected to the hopper mounting frame 5, and the hopper 6 is located inside the base frame 11.

[0051] In operation, the movable end of the lifting cylinder 2 extends first, and the mounting frame 3 lowers with the unhooking assembly 4. After it falls into place, the worker manually hooks the ton bag's sling onto the four unhooking hooks 43. Then, the bag opening of the ton bag is placed onto the bag clamp 7, which clamps the bag opening. At this time, the movable end of the lifting cylinder 2 retracts, causing the mounting frame 3 to rise and open the ton bag. The material falls into the ton bag through the hopper 6. When the material reaches the designated range, the feeding stops. Then, the movable end of the lifting cylinder 2 extends and retracts, compacting the material inside the ton bag. The bag clamp 7 releases the bag opening, and then the movable end of the unhooking cylinder 42 extends, the sling detaches from the unhooking hooks 43, and the packaged ton bag is conveyed to other workstations by the conveyor 8, realizing the lifting, feeding, unhooking, and unloading of the ton bag.

[0052] The embodiments described above are merely descriptions of specific implementations of this utility model and are not intended to limit the scope of this utility model. Various modifications and improvements made to the technical solutions of this utility model by those skilled in the art without departing from the spirit of this utility model should fall within the protection scope defined by the claims of this utility model.

Claims

1. A device for feeding, dropping, and unhooking assemblies in ton bags, characterized in that: It includes a fixed hanger (1), a lifting cylinder (2), a mounting bracket (3), and a release assembly (4); There are four lifting cylinders (2), which are arranged in a rectangular shape at the bottom of the fixed hanger (1). The fixed end of the lifting cylinder (2) is hinged to the fixed hanger (1), and the movable end is hinged to the mounting bracket (3) through a fisheye connector (21). There are four unhooking components (4), which are arranged in a rectangular shape on the mounting frame (3). Each unhooking component (4) includes an unhooking frame (41), an unhooking cylinder (42), and an unhooking (43). The unhooking frame (41) is fixed on the mounting frame (3). The middle part of the hook handle of the unhooking hook (43) is hinged to the unhooking frame (41). The unhooking cylinder (42) is located on the side away from the hook opening of the unhooking hook (43). The fixed end of the unhooking cylinder (42) is hinged to the unhooking frame (41), and the movable end is hinged to the end of the hook handle of the unhooking hook (43).

2. The bag feeding and unhooking device for ton bags according to claim 1, characterized in that: The mounting bracket (3) includes two first mounting rods (31) and two second mounting rods (32); Two first mounting rods (31) are arranged in parallel, and each first mounting rod (31) is hinged to two lifting cylinders (2) located on the same side through a fisheye joint (21); Two second mounting rods (32) are disposed between two first mounting rods (31), and the length direction of the second mounting rods (32) is perpendicular to the length direction of the first mounting rods (31). The two ends of the second mounting rods (32) are respectively fixed to the side walls of the two first mounting rods (31). The unhooking bracket (41) is fixed on the first mounting rod (31).

3. The bag feeding and unhooking device for ton bags according to claim 2, characterized in that: The unhooking frame (41) includes a fixing tube (411) and a pin fixing frame; The first mounting rod (31) and the fixing tube (411) are both rectangular tubes. Multiple mounting holes are opened through the side wall of the fixing tube (411) in the horizontal direction. The multiple mounting holes are arranged in the vertical direction. The shape of each mounting hole is adapted to the shape of the first mounting rod (31). The fixing tube (411) is sleeved on the first mounting rod (31) through the mounting holes. A fastening screw is provided on the side wall of the fixing tube (411) on one side where no mounting hole is opened, and the fastening screw abuts against the first mounting rod (31); The pin fixing bracket includes a first part (412) and a second part (413), which are arranged in parallel and are both fixed to the bottom of the fixing tube (411). A first pin (44) and a second pin (45) are arranged between the first part (412) and the second part (413). The fixed end of the unhooking cylinder (42) is hinged to the first pin (44), and the middle part of the hook handle of the unhooking (43) is hinged to the second pin (45).

4. The bag feeding and unhooking device for ton bags according to claim 3, characterized in that: The unhooking assembly (4) also includes a stop hook (47); The stop hook (47) is set at the hook opening position of the disengagement hook (43); A third pin (46) is provided between the first split body (412) and the second split body (413). The stop hook (47) is rotatably mounted on the third pin (46), and the end of the stop hook (47) abuts against the hook opening slope of the hook (43).

5. The bag feeding and unhooking device for ton bags according to claim 4, characterized in that: The mounting bracket (3) has a pivot (33) on its first mounting rod (31), and the fisheye connector (21) is hinged to the first mounting rod (31) via the pivot (33).

6. The bag feeding and unhooking device for ton bags according to claim 1, characterized in that: The fixed hanger (1) includes a rectangular frame base (11) and four columns (12) located at the four corners of the base (11); The fixed end of the lifting cylinder (2) is hinged to the base frame (11).

7. The bag feeding and unhooking device for ton bags according to claim 5, characterized in that: A fixing pin is provided radially on the rotating shaft (33), and the fixing pin is located on the outside of the fisheye connector (21).

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