A special-shaped ton bag and an opening system and method suitable for the ton bag

Abstract

The present invention relates to a special-shaped ton bag and a bag opening system and method adapted for the ton bag. The system includes a guide mechanism and a bag opening mechanism connected to the output end of the guide mechanism. The guide mechanism includes a roller conveyor with guide rods provided on both sides of the roller conveyor. The ton bag sling is mounted on the guide rods. The bag opening mechanism includes a bag opening station. A clamp for receiving the sling is provided directly above the bag opening station. The end of the guide rod extends close to the clamp. The special ton bag adapted by the system has slings symmetrically provided on both sides of the top of the ton bag. The slings are hung on the guide rods for transportation. When the slings fall from the guide rods, they are received by the clamps. After the clamps lift the ton bag, the bag opening knife at the bag opening mechanism opens the bag and extracts the material. The present invention does not require a large amount of manual intervention and has high efficiency, high grasping accuracy, and safe operation.

Description

Technical Field

[0001] The present invention relates to the technical field of bag opening machines, in particular to a special-shaped ton bag and a bag opening system and a bag opening method adapted for the ton bag. Background Art

[0002] Ton bags are usually large packaging bags that store powders and other materials. When the bags need to be opened and discharged, the existing technology often uses a method of manually opening the bags from the bottom, manually opening the bags, and then pressing and sealing the broken bags before discharging the materials.

[0003] However, this method of manually unpacking bags one by one is not only inconvenient to operate, but also has low disassembly efficiency due to the large size of the bags. During the unpacking and sealing process, there is a risk of dust leakage, causing environmental pollution and affecting workers' health. Summary of the Invention

[0004] In response to the shortcomings of the above-mentioned existing production technology, the applicant provides a rationally structured special-shaped ton bag and a bag opening system and method suitable for the ton bag. The system does not require manual intervention at the bag opening station, and the purpose of automatic conveying, positioning, and bag opening is achieved, thereby avoiding direct contact between workers and powder materials and improving operational safety.

[0005] The technical solutions adopted in the present invention are as follows:

[0006] A bag opening system for special-shaped ton bags, comprising a guide mechanism and a bag opening mechanism connected to the output end of the guide mechanism.

[0007] The guiding mechanism includes a roller conveyor, guide rods are arranged on both sides of the roller conveyor, and the slings of the ton bag are set on the guide rods.

[0008] The package opening mechanism comprises a package opening station, and a clamping claw for receiving the sling is provided directly above the package opening station, and the end of the guide rod extends to be close to the clamping claw.

[0009] Support rods are provided on both sides of the roller conveyor. The support rods are arranged along the guide rod array. The top ends of the support rods are provided with movable claws for clamping the guide rods.

[0010] The guide rod points from the starting end of the roller conveyor to the bag opening station. The guide path of the guide rod is flexibly arranged according to actual conditions and is generally applicable. In this solution, it is set horizontally or inclined.

[0011] The position of the clamping jaws is adjusted according to the position of the sling movement.

[0012] A planar slide rail is installed on the top of the frame of the package opening mechanism, and the clamping claws reciprocate along the planar slide rail.

[0013] A method for opening a package using a package opening system for special-shaped ton packages, comprising the following steps:

[0014] Conveying stage:

[0015] The bag falls on the starting end of the roller conveyor, and the bag's straps are threaded onto the guide rods on both sides manually or by a robot.

[0016] The bag is transported forward along the roller conveyor. During this process, the sling is always hung on the guide rod, and as the guide rod is raised, the sling is opened.

[0017] Transition phase:

[0018] The ton bag moves to the unpacking station, and the sling falls from the guide rod; the clamp moves downward when the sling moves to the tail end of the guide rod, passing through the gap between the sling and the main body of the ton bag, and the ton bag continues to move forward. At this time, the sling just falls on the clamp; the clamp moves, lifts the sling, and prepares for the subsequent unpacking process.

[0019] As a further improvement of the above technical solution:

[0020] When the sling of the ton bag runs along the guide rod, when it approaches the movable claw, the corresponding movable claw is loosened, leaving a gap for the sling to pass through; when the sling leaves the movable claw, the movable claw closes again.

[0021] On the single-side guide rod, when the sling passes through the movable claw, only one movable claw is released.

[0022] A special-shaped ton bag is suitable for the above-mentioned bag opening system, comprising a ton bag body, slings are symmetrically arranged on both sides of the ton bag body, and a suction port is provided on the top of the ton bag body.

[0023] As a further improvement of the above technical solution:

[0024] The two ends of the sling fall on the two vertices of the top edge of the ton bag on that side, and the length of the sling is greater than the length of the side of the ton bag on which it is located.

[0025] The beneficial effects of the present invention are as follows:

[0026] The present invention discloses a ton bag with a novel sling. Unlike conventional ton bags, the slings are positioned differently. Conventional ton bags have slings at the four corners for suspension. However, these four-corner slings are somewhat small, requiring high alignment precision when a robot or hook is used for grabbing. Furthermore, a robot is required at each of the four corners for grabbing, and the bag is discharged from the bottom after grabbing. This places high demands on the equipment and increases the probability of dust leakage.

[0027] The ton bag in the present invention is provided with longer slings on both sides. The slings are always hung on the guide rods during transportation and can accurately fall to the grabbing hands through the guide rods. The probability of empty grabbing is greatly reduced, the success rate is improved, and the risk of equipment shutdown is low.

[0028] The ton bag of the present invention is transported to the expected opening station through a guiding mechanism. During the transportation process, the guide rod gradually rises to lift the ton bag, which plays a preliminary shaping role and can lift the ton bag close to the opening knife to facilitate subsequent cutting of the ton bag.

[0029] Since the sling of the ton bag of the present invention is always hung on the guide rod, the clamping claws do not need to approach the side of the ton bag to grab it during the subsequent grabbing process, and the situation in which the side wall of the ton bag is easily grabbed during the existing ton bag grabbing process will not occur.

[0030] In the present invention, the clamping claw is located below the end of the guide rod. When the sling runs to the end of the guide rod, the sling loses the support of the guide rod and falls under the action of its own weight. When the sling moves to the tail end of the guide rod, the clamping claw moves downward and passes through the gap between the sling and the main body of the ton bag. The ton bag continues to move forward, and at this time the sling falls exactly on the clamping claw.

[0031] The present invention combines the use of automated design of monitoring feedback, and can set various sensors according to actual conditions to timely sense parameters such as the status of ton bags, equipment operation status, dust concentration, etc., which greatly reduces the intensity of manual operation and expands the protection range. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0033] Figure 2 for Figure 1 The enlarged view of part A is used to show the movable claw in the clamping state.

[0034] Figure 3 for Figure 1 The enlarged view of part B is used to show the movable claw in the released state.

[0035] Figure 4 It is a schematic diagram of the connection position of the guiding mechanism and the package opening mechanism of the present invention.

[0036] Figure 5 for Figure 4 The enlarged view of part C is used to show the position relationship of the sling falling from the guide rod into the clamping claw.

[0037] Figure 6 This is a schematic diagram of the connection position of the guiding mechanism and the package opening mechanism of the present invention from another perspective.

[0038] Figure 7 for Figure 6 The enlarged view of part D is used to show the state of the sling falling on the clamping claws.

[0039] Including: 1. Guide mechanism; 2. Opening mechanism; 3. Ton bag body; 4. Sling;

[0040] 101, roller conveyor; 102, guide rod; 103, support rod; 104, movable claw;

[0041] 201. Unpacking station; 202. Gripper; 203. Planar slide rail. DETAILED DESCRIPTION

[0042] The specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0043] like Figure 1-Figure 7 As shown, the package opening system for special-shaped ton packages of this embodiment includes a guiding mechanism 1, and a package opening mechanism 2 connected to the output end of the guiding mechanism 1.

[0044] The guiding mechanism 1 includes a roller conveyor 101, and guide rods 102 are arranged on both sides of the roller conveyor 101. The slings 4 of the ton bag are set on the guide rods 102.

[0045] The unpacking mechanism 2 includes an unpacking station 201 . A clamping claw 202 for receiving the sling 4 is provided directly above the unpacking station 201 . The end of the guide rod 102 extends close to the clamping claw 202 .

[0046] Support rods 103 are provided on both sides of the roller conveyor 101 . The support rods 103 are arranged in an array along the guide rods 102 . The top ends of the support rods 103 are provided with movable claws 104 for clamping the guide rods 102 .

[0047] The guiding path of the guide rod 102 is flexibly arranged according to actual conditions and is generally applicable. In one embodiment of the present invention, the guide rod 102 is gradually lifted from the starting end of the roller conveyor 101 to the unpacking station 201.

[0048] The position of the clamping jaw 202 is adjusted as the sling moves.

[0049] A planar slide rail 203 is installed on the top of the frame of the package opening mechanism 2 , and the clamping claw 202 reciprocates along the planar slide rail 203 .

[0050] The package opening method using the package opening system for special-shaped ton packages of this embodiment includes the following steps:

[0051] Conveying stage:

[0052] The bag falls on the starting end of the roller conveyor 101, and the bag's sling 4 is passed through the guide rods 102 on both sides manually or by a robot.

[0053] The bag is transported forward along the roller conveyor 101. During this process, the sling 4 is always hung on the guide rod 102, and as the guide rod 102 is raised, the sling 4 is opened.

[0054] Transition phase:

[0055] The ton bag moves to the unpacking station 201, and the sling 4 falls from the guide rod 102; the clamping claw 202 moves downward when the sling 4 moves to the tail end of the guide rod 102, passing through the gap between the sling 4 and the ton bag body 3, and the ton bag continues to move forward. At this time, the sling 4 just falls on the clamping claw 202; the clamping claw 202 moves, lifts the sling 4, and prepares for the subsequent unpacking process.

[0056] When the sling 4 of the ton bag runs along the guide rod 102 and approaches the movable claw 104, the corresponding movable claw 104 is loosened to leave a gap for allowing the sling 4 to pass through; when the sling 4 leaves the movable claw 104, the movable claw 104 is closed again.

[0057] On the single-side guide rod 102 , when the sling 4 passes through the movable claws 104 , one and only one movable claw 104 is released.

[0058] The special-shaped ton bag of this embodiment is adapted to the above-mentioned bag opening system, and includes a ton bag body 3 , slings 4 symmetrically arranged on both sides of the ton bag body, and a suction port at the top of the ton bag body 3 for facilitating material suction.

[0059] The two ends of the sling 4 fall on the two vertices of the top edge of the ton bag on this side, and the length of the sling 4 is greater than the side length of the ton bag on which it is located.

[0060] The specific structure and working principle of the present invention are as follows:

[0061] The purpose of the present invention is to solve the problem of inconvenience in manual package opening in the prior art. In order to use a machine to replace manual package opening, the present invention adopts a method of extending a package opening knife from top to bottom after hoisting.

[0062] In order to facilitate the transportation and the connection between the two stations, in the present invention, Figure 1 As shown, a guiding mechanism 1 and a bag opening mechanism 2 are provided to transport and lift ton bags.

[0063] like Figure 1 In the structure shown in FIG, the guide mechanism 1 includes a roller conveyor 101, with support rods 103 mounted on both sides of the roller conveyor 101. The top of the support rod 103 is clamped and connected to the guide rod 102 via a movable claw 104. The height of the guide rod 102 gradually increases, and the guide rod 102 near the bag opening mechanism 2 is the highest, making it easier to lift the ton bag to a position close to the clamping claw 202 and the bag opening knife.

[0064] like Figure 4 and Figure 5 As shown, a section of the guide rod 102 near the bag opening mechanism 2 is in a horizontal state. The reason for not adopting the inclined state is to prevent the ton bag from sliding backward from the inclined section and away from the bag opening mechanism 2.

[0065] Figure 4The structure of the ton bag can be seen in the figure, which is a ton bag provided by the present invention and is specially adapted to the guide mechanism 1. The top of the ton bag body 3 tends to be rectangular. In order to facilitate expression in the accompanying drawings, it is directly drawn as a rectangle.

[0066] Combined with reference Figure 6 and Figure 7 A sling 4 is provided on each side of the top surface of the ton bag, with both ends of the sling 4 fixed to the corresponding ends of the top edge of the ton bag body 3. As the sling 4 is hung on the guide rod 102 and moves along the roller conveyor 101, the guide rod 102 gradually lifts the ton bag, raising the top of the ton bag, making it easier for the sling knife located at the top of the sling mechanism 2 to cut the ton bag.

[0067] When the sling 4 moves to the end of the guide rod 102 and continues to move forward, Figure 5 As shown, the sling 4 falls onto the clamping claw 202 supported at the front lower part of the guide rod 102.

[0068] Combined with reference Figure 1 A planar slide 203 is provided on top of the opening mechanism 2. The planar slide 203 comprises two sets of slides in the x- and y-axis directions. The two sets of slides drive the grippers 202 corresponding to the slings 4 on either side, thereby achieving movement of the grippers 202. A drag chain or pneumatic cylinder is used to lift the grippers 202 upward. The slides and upward power source are common technologies and are not described in detail in this embodiment.

[0069] During the movement of the sling 4, it is easy to be interfered by the connection node between the support rod 103 and the guide rod 102. Figure 2 and Figure 3 As shown, in this embodiment, a movable claw 104 is installed on the top of the support rod 103. Figure 2 This is a schematic diagram of the state where the movable claw 104 clamps the guide rod 102. Figure 3 This diagram shows the movable claw 104 releasing the guide rod 102. When the movable claw 104 is released, the sling 4 can pass through the gap between the movable claw 104 and the guide rod 102. Each time the sling 4 passes a movable claw 104, the claw 104 at that location releases, while the other movable claws 104 remain in a clamped position, stabilizing the connection.

[0070] The initial state of the sling 4 is hung on the starting end of the guide rod 102 by manual or mechanical hands. Since the sling 4 is large in size and the action of hanging is simple, the labor intensity is not large, and the mechanical hand path accuracy requirement does not need to be too high.

[0071] The present invention utilizes the guiding function of the guide rod 102. Initially, at a distance from the bag opening mechanism 2, the lower guide rod 102 is used to facilitate the hooking of the sling 4 onto the guide rod 102. Then, as the guide rod 102 rises, the sling 4 of the ton bag is gradually pulled up until it reaches the end of the guide rod 102 and falls onto the clamping claw 202, which then lifts the ton bag. During this process, the forward motion can be provided by the roller conveyor 101.

[0072] The roller conveyor 101 of the present invention not only provides a path for the ton bags but also provides a vertical buffer during the lifting process of the ton bag sling 4. If a fixed-height guide bar 102 were used directly, the sling 4 would need to be initially pulled up and hooked onto the guide bar 102. This process may require overcoming the weight of the ton bag, increasing the labor intensity. The gradually rising guide bar 102 of the present invention significantly reduces the difficulty of hooking the sling at the starting point of the roller conveyor 101.

[0073] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any modifications may be made within the scope of protection of the present invention.

Claims

1. A system for opening special-shaped bulk bags, characterized by: It comprises a guiding mechanism (1), an opening mechanism (2) connected to the output end of the guiding mechanism (1), The guiding mechanism (1) comprises a roller conveyor (101), guide rods (102) are arranged on both sides of the roller conveyor (101), and the slings (4) of the ton bag are sleeved on the guide rods (102). The package opening mechanism (2) includes a package opening station (201), a clamping claw (202) for receiving the sling (4) is provided directly above the package opening station (201), and the end of the guide rod (102) extends close to the clamping claw (202); Support rods (103) are provided on both sides of the roller (101). The support rods (103) are arranged in an array along the guide rods (102). The top ends of the support rods (103) are provided with movable claws (104) for clamping the guide rods (102).

2. The system for opening special-shaped ton bags according to claim 1, characterized in that: The guide rod (102) points from the starting end of the roller conveyor (101) to the bag opening station (201), and the guide path of the guide rod (102) is horizontally or inclined.

3. The system for opening special-shaped bulk bags according to claim 1, characterized in that: The position of the clamping jaw (202) is adjusted according to the position of the sling movement.

4. The system for opening special-shaped bulk bags according to claim 1, characterized in that: A planar slide rail (203) is installed on the top of the frame of the package opening mechanism (2), and the clamping claw (202) reciprocates along the planar slide rail (203).

5. A method for opening a package using the opening system for special-shaped ton packages according to claim 1, characterized in that: The steps include: Conveying stage: The ton bag falls on the starting end of the roller conveyor (101), and the sling (4) of the ton bag is passed through the guide rods (102) on both sides manually or by a robot; The ton bag is transported forward along the roller conveyor (101). During this process, the sling (4) is always hung on the guide rod (102), and as the guide rod (102) is raised, the sling (4) is in an open state; Transition phase: The ton bag moves to the bag opening station (201), and the sling (4) falls from the guide rod (102); the clamping claw moves downward when the sling moves to the tail end of the guide rod, passes through the gap between the sling and the main body of the ton bag, and the ton bag continues to move forward. At this time, the sling just falls on the clamping claw; the clamping claw (202) moves, lifts the sling (4), and prepares for the subsequent bag opening process.

6. The package opening method according to claim 5, wherein: When the sling (4) of the ton bag runs along the guide rod (102), when it approaches the movable claw (104), the corresponding movable claw (104) is loosened to leave a gap for allowing the sling (4) to pass through; when the sling (4) leaves the movable claw (104), the movable claw (104) is closed again.

7. The package opening method according to claim 6, wherein: On the single-side guide rod (102), when the sling (4) passes through the movable claws (104), only one movable claw (104) is released.

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