Ton bag clamping device and feeding method

Abstract

The invention relates to a ton bag holding and clamping device and a feeding method. The ton bag holding and clamping device comprises a base and a holding claw assembly, and a plurality of first connecting bases are arranged in the circumferential direction of the base; the holding claw assemblies are movably arranged on the first connecting base, and an openable holding clamping space is formed among the multiple holding claw assemblies; the holding claw assembly comprises a hollow needle tube, the first end of the needle tube is used for being connected with an air source, the second end of the needle tube comprises a tip end of the needle tube, and the tip end points to the holding and clamping space. According to the ton bag holding and clamping device, the tip of the needle tube is inserted into the ton bag, and circumferential limiting and holding and clamping of the ton bag can be achieved; in the feeding process, air is blown into the ton bag through the needle tube, so that materials in the ton bag are fully fluidized, the flowing speed of the materials in the ton bag is increased through airflow, the materials are prevented from being clamped in the ton bag, and the material feeding efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of material storage and transportation, and in particular to a ton bag clamping device and a material loading method. Background Art

[0002] In the manufacturing process, a large amount of materials are stored and transported in ton bags. When loading ton bags, the ton bags are first transported to the designated area by manual forklifts, and then the electric hoist is moved above the designated area. Then the handles of the ton bags in the designated area are manually hung on the hooks of the electric hoist, and finally the electric hoist is operated to move the ton bags to the loading station. This loading method has a low degree of automation and low loading efficiency.

[0003] However, the automatic clamping mechanism for ton bags in the prior art needs to exert a large pressure on the outer surface of the ton bag to achieve stable clamping of the ton bag, which causes the materials to be squeezed against each other. When loading, materials are easily stuck inside the ton bag, resulting in the material being unable to leak out of the broken bag. At this time, manual intervention is required, which affects the loading efficiency. Summary of the invention

[0004] The present application provides a ton bag clamping device and a feeding method to solve the technical problem that when the ton bag is fed through an automatic clamping mechanism, material jamming is likely to occur inside the ton bag, thereby affecting the feeding efficiency.

[0005] In a first aspect, the present application provides a ton bag clamping device, comprising:

[0006] A base, with a plurality of first connecting seats arranged along the circumference of the base;

[0007] The claw assembly is movably arranged on the first connecting seat, and an openable and closable clamping space is formed between the multiple claw assemblies; the claw assembly includes a hollow needle tube, the first end of the needle tube is used to connect to the air source, and the second end of the needle tube includes a tip of the needle tube, and the tip points to the clamping space.

[0008] Optionally, the claw assembly also includes a flexible pad, and the needle tube is inserted into the flexible pad.

[0009] Optionally, the claw assembly also includes a connected claw arm assembly and a first drive assembly.

[0010] Optionally, the claw arm assembly includes a connecting rod mechanism, which includes a first connecting rod, a second connecting rod and a third connecting rod. The first driving assembly is respectively connected to the first end of the first connecting rod and the first connecting seat, the two ends of the second connecting rod are respectively hinged to the second end of the first connecting rod and the first end of the third connecting rod, the third connecting rod has a connecting hole for hinged connection with the base, and the needle tube is connected to the second end of the third connecting rod.

[0011] Optionally, the ton bag clamping device also includes a grabbing assembly, which is connected to the base and is located at the top of the clamping space.

[0012] Optionally, the gripping assembly includes a connected second drive assembly and a clamping mechanism for realizing the opening and closing of the clamping mechanism.

[0013] Optionally, the clamping mechanism comprises at least one pair of clamping jaws arranged opposite to each other, and the second driving assembly comprises a transmission member for connecting with the clamping jaws;

[0014] The base is provided with a second connecting seat, and the transmission member is movably arranged on the second connecting seat.

[0015] Optionally, two transmission members are arranged in parallel on the second connecting seat, the transmission member is rotatably connected to the second connecting seat, and a plurality of clamping claws are arranged along the length direction of the transmission member.

[0016] Optionally, the ton bag clamping device also includes a flexible lifting component, and the base has a third connecting seat for connecting to the flexible lifting component.

[0017] In a second aspect, the present application provides a feeding method, using the above-mentioned ton bag clamping device, comprising the following steps:

[0018] Control the claw assembly to insert the tip of the needle tube into the big bag;

[0019] Lift the ton bag clamping device, and after the ton bag is broken, blow air into the inside of the ton bag through the needle tube.

[0020] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0021] The ton bag clamping device provided in the embodiment of the present application forms an openable and closable clamping space in a plurality of claw assemblies. The claw assembly includes a hollow needle tube. The tip of the needle tube is inserted into the ton bag to achieve circumferential limitation and clamping of the ton bag. During the feeding process, air is blown into the interior of the ton bag through the needle tube to fully fluidize the material inside the ton bag. The airflow increases the flow speed of the material inside the ton bag to avoid stagnation of the material inside the ton bag, thereby improving the material feeding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0024] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0025] Figure 1 A front view of a ton bag clamping device provided in an embodiment of the present application;

[0026] Figure 2 This is an axial view of the ton bag clamping device provided in an embodiment of the present application;

[0027] Figure 3 A top view of a ton bag clamping device provided in an embodiment of the present application;

[0028] Figure 4 The embodiment of the present application provides Figure 3 Sectional view of AA in the middle;

[0029] Figure 5 A partial cross-sectional view of a claw assembly provided in an embodiment of the present application;

[0030] Figure 6 A top view of a grab assembly provided in an embodiment of the present application;

[0031] Figure 7 A front view of a grabbing assembly provided in an embodiment of the present application.

[0032] Description of reference numerals:

[0033] 1. base; 11. first connecting seat; 12. second connecting seat; 13. third connecting seat; 14. base body; 15. first avoidance groove; 16. second avoidance groove; 17. fourth connecting seat; 18. fifth connecting seat;

[0034] 2. Claw assembly; 21. Needle tube; 211. Tip; 212. Air nozzle; 22. Flexible pad; 23. Claw arm assembly; 231. Link mechanism; 2311. First link; 2312. Second link; 2313. Third link; 232. Connecting plate; 24. First drive assembly;

[0035] 3. Grabbing assembly; 31. Second driving assembly; 311. Transmission member; 312. Driving member; 313. Connecting arm; 314. Articulated portion; 32. Clamping mechanism; 321. Clamping jaw; 322. Connecting assembly;

[0036] 4. Flexible lifting assembly; 41. Flexible cable; 42. Connecting piece. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0038] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0039] For ease of description, spatial relative terms may be used in the text to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inside", "outside", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the ton bag clamping device in use or operation other than the orientation depicted in the figure. For example, if the ton bag clamping device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications will also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The ton bag clamping device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0040] In order to solve the technical problem that when loading ton bags through an automatic clamping mechanism in the prior art, materials are easily stuck inside the ton bags, which affects the loading efficiency, the first aspect of the present application provides a ton bag clamping device, including a base 1 and a claw assembly 2, wherein a plurality of first connecting seats 11 are sequentially arranged along the circumference of the base 1; the claw assembly 2 is movably arranged on the first connecting seat 11, and a clamping space that can be opened and closed is formed between the plurality of claw assemblies 2, such as Figure 1 and Figure 4As shown; the claw assembly 2 includes a hollow needle tube 21, the first end of the needle tube 21 is used to connect to the air source, and the second end of the needle tube 21 includes a tip 211 of the needle tube 21, and the tip 211 points to the clamping space. When the ton bag is automatically clamped, the ton bag clamping device is moved to the top of the ton bag, and the multiple claw assemblies 2 are in an open state, so that the clamping space reaches the maximum, and the ton bag clamping device is moved down to the ton bag. When the ton bag is inside the clamping space, the multiple claw assemblies 2 are retracted, and the 21 needle tubes in the multiple claw assemblies 2 are inserted into the ton bag to achieve circumferential limiting and clamping of the ton bag; after the ton bag clamping device is moved to the loading station, the bottom of the ton bag is cut open by the bag breaking mechanism in the prior art, and air is blown into the ton bag through the needle tube 21 during the loading process, so that the material inside the ton bag is fully fluidized, and the material flow speed inside the ton bag is increased by the airflow, so as to avoid the material from being stuck inside the ton bag and improve the material loading efficiency.

[0041] In some embodiments of the present application, in order to apply uniform force to the ton bag through the ton bag clamping device, a plurality of claw assemblies 2 are evenly arranged along the circumference of the base body 14 of the base 1, and each claw assembly 2 has another claw assembly 2 arranged opposite to it. Through the relative movement of the two oppositely arranged claw assemblies 2, stable clamping of the ton bag in one direction is achieved.

[0042] As a preferred embodiment of this application, please refer to Figure 2 and Figure 3 Four claw assemblies 2 are arranged at the four corners of the base body 14, and the four claw assemblies 2 are arranged in an X shape. Each claw assembly 2 is provided with a plurality of needle tubes 21, and the tip 211 of the needle tube 21 is inserted into the ton bag to prevent the ton bag from vertical displacement, so that the claw assembly 2 can clamp the ton bag more reliably. A gas nozzle 212 is provided at the first end of the needle tube 21, which can be used to connect to the compressed air source in the factory. The inflation pressure is between 0.15 and 0.2 MPa. Since the smaller the particle size of the material, the greater the bulk density, in order to fully fluidize the material, the greater the inflation pressure.

[0043] After the tip 211 of the needle tube 21 is inserted into the big bag, in order to prevent leakage from the punctured part of the big bag, the outer area of ​​the needle tube 21 in the punctured part needs to be blocked. Figure 2 and Figure 5 In some embodiments of the present application, the claw assembly 2 further includes a flexible pad 22, and the needle tube 21 is inserted into the flexible pad 22. After the tip 211 of the needle tube 21 is inserted into the ton bag, the flexible pad 22 is in close contact with the outer surface of the ton bag to prevent the material from leaking out of the gap between the outer periphery of the needle tube 21 and the piercing portion.

[0044] The flexible pad 22 has elastic deformation ability, and the flexible pad 22 can be used to seal the gap where material may leak. The material of the flexible pad 22 can be sponge, rubber and other materials. As a preferred embodiment of the present application, the flexible pad 22 includes a foamed silicone pad. The foamed silicone has a strong sealing ability and can prevent the leakage of tiny particles. At the same time, the foamed silicone also has the characteristics of stable chemical properties and aging resistance. It is not easy to react with other substances and will not react with the materials when used to seal the materials. In addition, the foamed silicone can be used in the temperature range of -60°C to 250°C, and is suitable for sealing the punctured parts of the ton bags in harsh working conditions.

[0045] In order to achieve stable clamping of the ton bag, the needle tube 21 should be inserted into the middle and lower part of the ton bag as much as possible, and there should be a certain distance between the needle tube 21 and the first connecting seat 11 on the base 1 in the vertical direction. Figure 1 , Figure 2 and Figure 4 In some embodiments of the present application, the claw assembly 2 also includes a connected claw arm assembly 23 and a first drive assembly 24, the needle tube 21 is installed at the bottom end of the claw arm assembly 23, and the first drive assembly 24 can drive the claw arm assembly 23 to move, thereby realizing the opening and closing of the clamping space.

[0046] It should be noted that the movement of the claw arm assembly 23 can be a relative sliding movement with the base 1, and the distance between the two relatively arranged claw assemblies 2 is changed by the sliding of the claw arm assembly 23, so as to realize the opening and closing of the clamping space. The movement of the claw arm assembly 23 can also be a relative rotation with the base 1, and the clamping angle between the two relatively arranged claw assemblies 2 is changed by the rotation of the claw arm assembly 23, so as to realize the opening and closing of the clamping space. However, if the distance between the two relatively arranged claw assemblies 2 is changed by the sliding of the claw arm assembly 23, in order to obtain a larger clamping space, a longer slide rail needs to be provided on the base body 14, which will result in a larger overall size of the base body 14. However, if the clamping angle between the two relatively arranged claw assemblies 2 is changed by the rotation of the claw arm assembly 23, it is only necessary to provide the fifth connecting seat 18 on the base 1 to realize the hinge connection with the claw arm assembly 23, and a larger clamping range can be obtained by rotating the claw arm assembly 23 around the fifth connecting seat 18, without increasing the size of the base body 14. Therefore, it is preferred that the claw assembly 2 is rotatably disposed on the base 1 .

[0047] It should be noted that when the claw arm assembly 23 is driven to rotate around the fifth connecting seat 18 by the first driving assembly 24, the first driving assembly 24 can be a rotating power component such as an electric motor or a hydraulic motor.

[0048] Since the weight of the ton bag is heavy, in order to improve the structural strength of the claw assembly 2, in some embodiments of the present application, please refer to Figure 4The claw arm assembly 23 includes a connecting rod mechanism 231, which includes a first connecting rod 2311, a second connecting rod 2312 and a third connecting rod 2313. The first driving assembly 24 is connected to the first end of the first connecting rod 2311 and the first connecting seat 11 respectively, so that the first connecting rod 2311 can rotate around the hinge axis of the first connecting seat 11 under the drive of the first driving assembly 24; the two ends of the second connecting rod 2312 are respectively hinged to the second end of the first connecting rod 2311 and the first end of the third connecting rod 2313 for realizing power transmission; the third connecting rod 2313 has a connecting hole for hinged connection with the fifth connecting seat 18 on the base 1, and the needle tube 21 and the flexible pad 22 are connected to the second end of the third connecting rod 2313. The connecting rod mechanism 231 is made of high-strength material to improve the bearing capacity of the connecting rod mechanism 231, which is suitable for heavy-load conditions. At the same time, the needle tube 21 and the flexible pad 22 are located at the free end of the connecting rod mechanism 231. Since the connecting rod mechanism 231 has the characteristics of stable motion output and fixed motion trajectory, the needle tube 21 and the flexible pad 22 also have a stable motion trajectory, which facilitates the stable ton bag clamping operation.

[0049] It should be noted that the connection hole of the third connecting rod 2313 is arranged in the middle and upper part of the third connecting rod 2313, and the base body 14 has a fifth connecting seat 18 extending downward, so that a stable four-bar linkage is formed between the base body 14, the first connecting rod 2311, the second connecting rod 2312 and the third connecting rod 2313. The third connecting rod 2313 can drive the needle tube 21 to swing, and the swing direction is as follows: Figure 4 shown.

[0050] In order to avoid the interference between the first link 2311 and the second link 2312 and the clamping space when the link mechanism 231 moves, thus affecting the clamping of the ton bag, please refer to Figure 2 In some embodiments of the present application, the first driving assembly 24, the first connecting rod 2311, and the second connecting rod 2312 are all arranged on the top of the base body 14. In order to avoid interference between the base body 14 and the third connecting rod 2313, a first avoidance groove 15 is provided on the base body 14, so that the third connecting rod 2313 can swing in the first avoidance groove 15.

[0051] It should be noted that in order to provide support for the flexible pad 22 and prevent the flexible pad 22 from tilting toward the side away from the ton bag after being squeezed and causing material leakage, please refer to Figure 4 and Figure 5A connecting plate 232 is provided at the second end of the third connecting rod 2313, and the flexible pad 22 is fixedly arranged on the connecting plate 232. The rigid connecting plate 232 provides support to the flexible pad 22 to prevent the flexible pad 22 from tilting after being squeezed by the ton bag and the material. The needle tube 21 is vertically inserted on the connecting plate 232 and the flexible pad 22. As a preferred embodiment of the present application, a plurality of needle tubes 21 are evenly arranged on the connecting plate 232 to evenly fix the ton bag.

[0052] In the process of loading materials through the ton bag clamping device, the volume of the ton bag will change due to the continuous reduction of materials in the ton bag. In order to achieve stable clamping of the ton bag by the claw assembly 2, a pressure sensor can be set on the connecting plate 232, and the opening and closing angle of the claw assembly 2 can be adjusted by the value change of the pressure sensor. However, when the material in the ton bag is very small, the ton bag is still easy to fall from the claw assembly 2, which will cause waste of materials inside the ton bag, and once the ton bag falls into the material processing equipment, it will affect the normal processing of the materials.

[0053] To solve the above problems, see Figure 1 , Figure 2 , Figure 4 , Figure 6 and Figure 7 The ton bag clamping device further includes a grabbing assembly 3, which is connected to the base 1 and is located at the top of the clamping space. When clamping the ton bag, the grabbing assembly 3 can automatically grab the top of the ton bag to fix the top of the ton bag. Even if the ton bag cannot be clamped by the claw assembly 2 due to less material in the ton bag, the top of the ton bag can still be fixed by the grabbing assembly 3, so that the remaining material inside the ton bag can be smoothly leaked from the bottom of the ton bag to avoid material waste.

[0054] After the material is loaded, the waste bag needs to be thrown to the designated location. To realize the automatic throwing of the waste bag, the automatic opening and closing of the grabbing component 3 needs to be realized. Figure 3 , Figure 6 and Figure 7 In some embodiments of the present application, the grabbing assembly 3 includes a connected second driving assembly 31 and a clamping mechanism 32, which are used to realize the opening and closing of the clamping mechanism 32, so as to facilitate the grabbing assembly 3 to automatically grab and throw the ton bag.

[0055] In order to achieve stable grasping of the top of the ton bag, in some embodiments of the present application, the clamp mechanism 32 includes at least one pair of clamps 321 arranged opposite to each other, and the sharp hooks of the clamps 321 arranged opposite to each other are inserted into the two sides of the top of the ton bag to achieve grasping of the top of the ton bag. The shape of the clamp 321 can be designed as required. As a preferred embodiment of the present application, the clamp 321 has a curved section, so that the shape of the clamp 321 is the same as that of a spider claw (spider leg), which facilitates the insertion of the sharp hook of the clamp 321 into the top of the ton bag, and can achieve stable grasping of the top of the ton bag.

[0056] In order to facilitate the gripping of the top of the ton bag by the clamp 321, the clamp 321 is arranged below the base body 14. If the second drive assembly 31 is also arranged below the base body 14, due to the large structural size of the second drive assembly 31, it will interfere with or compress the top of the clamping space.

[0057] To solve the above problems, see Figure 6 and Figure 7 In some embodiments of the present application, the second driving assembly 31 is disposed on the top of the base body 14. In order to realize the connection between the second driving assembly 31 and the clamping jaw 321, the second driving assembly 31 includes a transmission member 311 for connecting with the clamping jaw 321. The base 1 has a second connecting seat 12, and the transmission member 311 is movably disposed on the second connecting seat 12. The power transmission between the second driving assembly 31 and the clamping jaw 321 is realized through the transmission member 311, so as to realize the movement of the clamping jaw 321 and the opening and closing of the clamping jaw mechanism 32.

[0058] It should be noted that, in order to realize the opening and closing of the clamping mechanism 32, the two clamping jaws 321 arranged relatively to each other can slide relative to each other or rotate relative to each other. However, the opening and closing mode of the two clamping jaws 321 sliding relative to each other requires a larger sliding range to be set on the second connecting seat 12, which will cause the structural size of the second connecting seat 12 to be larger, and it is easy to cause obstruction to the observation of the opening and closing of the grabbing assembly 3. Therefore, it is preferred that the opening and closing of the clamping mechanism 32 is realized by the relative rotation of the two clamping jaws 321 arranged relatively to each other, and the rotation direction of the clamping jaws 321 is as follows: Figure 7 shown.

[0059] To facilitate the rotation of the clamping jaw 321, refer to Figure 4 , Figure 6 and Figure 7 Two transmission members 311 are arranged in parallel on the second connecting seat 12, and the transmission member 311 is rotatably connected to the second connecting seat 12. A plurality of clamping claws 321 are arranged along the length direction of the transmission member 311. The plurality of clamping claws 321 are combined to form at least two clamping points, which can realize multi-point grasping of the top of the ton bag and improve the reliability of the grasping component 3.

[0060] It should be noted that the plurality of jaws 321 are connected to the same side of the transmission member 311 through the connection assembly 322. When the transmission member 311 rotates, the jaws 321 on the same side can be driven to rotate synchronously. The connection assembly 322 is a bolt assembly, which facilitates the replacement of the jaws 321 when the jaws 321 are damaged.

[0061] As a preferred embodiment of this application, please refer to Figure 4 , Figure 6 and Figure 7 , two second connecting seats 12 are respectively provided on the front and rear sides of the base body 14, and the two ends of the transmission member 311 are rotatably set on the two second connecting seats 12. Since the second driving assembly 31 is located above the base body 14 and the transmission member 311 is located below the base body 14, in order to realize the transmission between the two, a connecting arm 313 is provided between the transmission member 311 and the second driving assembly 31, and the connecting arm 313 is fixedly connected to the transmission member 311, and the connecting arm 313 is hinged to the driving member 312. The driving member 312 is a linear motion mechanism, and the connecting arm 313, the transmission member 311 and the clamping claw 321 are driven to rotate as a whole through the extension and contraction of the driving member 312; in order to avoid the transmission jamming, the driving member 312 is provided with a hinged portion 314 for being hinged with the fourth connecting seat 17, so that the driving member 312 can swing around the fourth connecting seat 17 when extending and contracting, so as to avoid the driving member 312, the connecting arm 313 and the base 1 from being jammed.

[0062] It should be noted that, in order to prevent the base body 14 from interfering with the rotation of the connecting arm 313 , a second avoidance groove 16 is provided on the base body 14 , and the connecting arm 313 can swing in the second avoidance groove 16 .

[0063] In order to prevent the connecting arm 313 from interfering with the transmission member 311 on the opposite side when rotating, please refer to Figure 6 and Figure 7 In some embodiments of the present application, the two driving members 312 are arranged alternately. The driving member 312 on the left side of the base 1 drives the transmission member 311 on the right side to rotate, and the driving member 312 on the right side of the base 1 drives the transmission member 311 on the left side to rotate, which can avoid interference between the connecting arm 313 and the transmission member 311 on the opposite side when rotating.

[0064] When the ton bag is clamped by the ton bag clamping device, the clamping space formed by the opening of the claw assembly 2 is much larger than the volume of the ton bag. When the ton bag is not placed in the center of the clamping space, if the base 1 and the lifting device are rigidly connected, part of the claw assembly 2 may fail to contact the outer surface of the ton bag.

[0065] To solve the above problems, please refer to Figure 1 , Figure 2 and Figure 4The ton bag clamping device also includes a flexible lifting component 4, and the base 1 has a third connecting seat 13 for connecting with the flexible lifting component 4. When the placement position of the ton bag is not in the center of the clamping space, the flexible lifting component 4 can be deformed to adapt to the position of the ton bag. Specifically, when one of the claw components 2 contacts the outer surface of the ton bag, the ton bag has a limiting effect on the claw component 2. Since the base 1 and the lifting device are flexibly connected, when the claw component 2 is closed, the limited claw component 2 will drive the base 1 to deviate toward the ton bag, so that all the claw components 2 can contact the outer surface of the ton bag to achieve stable clamping; it can adapt to the automatic clamping of ton bags of different shapes that are not placed in the center.

[0066] In some embodiments of the present application, the flexible lifting assembly 4 includes a connected flexible cable 41 and a connector 42. The flexible cable 41 can be a flexible connector such as a steel wire rope, a spring shaft, a chain, etc. that can be used to provide tension. The connector 42 is used to be rotatably connected to the third connecting seat 13 and can be a universal joint, an articulated shaft, or other elements.

[0067] The second aspect of the embodiment of the present application provides a feeding method, which adopts the ton bag clamping device in the above embodiment, and includes the following steps:

[0068] Step 1: Place the ton bag at the predetermined position, adjust the position of the ton bag clamping device so that the ton bag clamping device is located above the ton bag. Since the ton bag clamping device has a flexible lifting component 4, there is no need to accurately position the ton bag clamping device in this step.

[0069] Step 2: Open the claw assembly 2 through the first driving assembly 24 so that the range of the clamping space reaches the maximum or reaches a suitable position. Specifically, the suitable position refers to the range of the clamping space sufficient to confirm through observation that it covers the ton bag placement range;

[0070] Step 3: lower the ton bag clamping device, make at least one claw assembly 2 contact the outer surface of the ton bag first, control the multiple claw assemblies 2 to close, make the tip 211 of the needle tube 21 insert into the ton bag, fix the ton bag circumferentially, grab the top of the ton bag through the grab assembly 3, and fix the top of the ton bag;

[0071] Step 4: lift the ton bag clamping device to the loading station through the lifting device, and cut the bottom of the ton bag through the bag breaking mechanism. After the ton bag is broken, blow air into the ton bag through the needle tube 21, and the inflation pressure is between 0.15 and 0.2 MPa, so that the material inside the ton bag is fully fluidized, which is convenient for the material to leak out from the bottom of the ton bag, thereby improving the loading efficiency;

[0072] Step 5: After the materials in the ton bag are completely poured out, the ton bag clamping device is moved to the ton bag throwing station through the lifting device, and the claw assembly 2 and the grabbing assembly 3 are opened to realize the automatic throwing of the waste ton bag.

[0073] It should be noted that the ton bag clamping device of the present application can realize automatic clamping, moving, loading and throwing of ton bags, which greatly improves the degree of production automation and reduces labor costs. When toxic materials are stored in ton bags, the ton bag clamping device of the present application can be set in a sealed environment, and the ton bag clamping device can be used to realize automated production, avoid manual contact with toxic materials, and protect the health of workers and environmental safety.

[0074] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0075] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0076] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A ton bag clamping device, characterized in that: include: A base (1), wherein a plurality of first connecting seats (11) are provided along the circumference of the base (1); A claw assembly (2), wherein the claw assembly (2) is movably arranged on the first connecting seat (11), and a plurality of the claw assemblies (2) form an openable and closable clamping space; the claw assembly (2) comprises a hollow needle tube (21), wherein a first end of the needle tube (21) is used for connecting to an air source, and a second end of the needle tube (21) comprises a tip (211) of the needle tube (21), and the tip (211) points toward the clamping space.

2. The ton bag clamping device according to claim 1 is characterized in that: The claw assembly (2) also includes a flexible pad (22), and the needle tube (21) is inserted into the flexible pad (22).

3. The ton bag clamping device according to claim 1 is characterized in that: The claw assembly (2) also includes a connected claw arm assembly (23) and a first drive assembly (24).

4. The ton bag clamping device according to claim 3 is characterized in that: The claw arm assembly (23) includes a connecting rod mechanism (231), and the connecting rod mechanism (231) includes a first connecting rod (2311), a second connecting rod (2312) and a third connecting rod (2313); the first driving assembly (24) is respectively connected to the first end of the first connecting rod (2311) and the first connecting seat (11); the two ends of the second connecting rod (2312) are respectively hinged to the second end of the first connecting rod (2311) and the first end of the third connecting rod (2313); the third connecting rod (2313) has a connecting hole for being hinged to the base (1); and the needle tube (21) is connected to the second end of the third connecting rod (2313).

5. The ton bag clamping device according to claim 1 is characterized in that: The ton bag clamping device further comprises a gripping assembly (3), wherein the gripping assembly (3) is connected to the base (1), and the gripping assembly (3) is located at the top of the clamping space.

6. The ton bag clamping device according to claim 5 is characterized in that: The grabbing assembly (3) comprises a second driving assembly (31) and a clamping mechanism (32) which are connected to each other and are used to realize the opening and closing of the clamping mechanism (32).

7. The ton bag clamping device according to claim 6 is characterized in that: The clamping jaw mechanism (32) comprises at least one pair of clamping jaws (321) arranged opposite to each other, and the second driving assembly (31) comprises a transmission member (311) for connecting with the clamping jaws (321); The base (1) has a second connecting seat (12), and the transmission member (311) is movably arranged on the second connecting seat (12).

8. The ton bag clamping device according to claim 7 is characterized in that: The two transmission members (311) are arranged in parallel on the second connecting seat (12); the transmission member (311) is rotatably connected to the second connecting seat (12); and a plurality of clamping claws (321) are arranged along the length direction of the transmission member (311).

9. The ton bag clamping device according to claim 8 is characterized in that: The ton bag clamping device also includes a flexible lifting component (4), and the base (1) has a third connecting seat (13) for connecting to the flexible lifting component (4).

10. A feeding method, characterized in that: The ton bag clamping device according to any one of claims 1 to 9 comprises the following steps: Controlling the claw assembly (2) so that the tip (211) of the needle tube (21) is inserted into the ton bag; The ton bag clamping device is lifted, and after the ton bag is broken, air is blown into the ton bag through the needle tube (21).

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