An automatic unpacking and discharging device for bulk bags

Abstract

The present invention discloses an automatic unpacking and discharging device for ton bags, belonging to the technical field of ton bag unpacking and discharging. It includes an electric hoist crane, a ton bag, an automatic unpacking mechanism, a support platform and a silo. The ton bag is hoisted by the electric hoist crane, and the support platform is provided with a silo. The silo is provided with a feed inlet and a discharge outlet. It is characterized in that the automatic unpacking mechanism is installed on the feed inlet by bolt spiral, and one of the four corners at the bottom of the ton bag is directly above the center of the automatic unpacking mechanism, solving the technical problems of the complex structure and high production cost of the existing device, the loss of the material during the discharging process, and the existence of surplus material inside the ton bag after the discharging is completed. It is mainly applied to the unpacking and discharging of ton bags.

Description

Technical Field

[0001] The present invention relates to the technical field of unpacking and discharging of bulk bags, and specifically to an automatic unpacking and discharging device for bulk bags. Background Art

[0002] In the production process of epoxy resin, an electric hoist is required to lift a bulk bag filled with epoxy resin particles above the silo, and then the particles are taken out of the warehouse and the particles in the bulk bag are poured into a special silo for storage. The material flows into the silo through the silo opening. The bulk bag is a flexible bag, and the bulk bag filled with the material is approximately rectangular in shape with a flat bottom.

[0003] Application No.: 202111300777.6, discloses an automatic bulk bag opener, which includes an unpacking bin, a bag collecting bin, and a hoist for suspending the bulk bag. The unpacking bin and the bag collecting bin are generally arranged side by side and integrated into one body, reducing the occupied space in the workshop and the generation of dust. A bag-breaking tool is installed in the unpacking bin, the bottom of the unpacking bin is connected to the discharge bin, a flip-over pressing plate is installed in the bag collecting bin, and a waste bag collecting mechanism is arranged at the bottom of the bag collecting bin. The above patent uses the bag-breaking tool to break open the bulk bag, and the material inside the bulk bag falls into the silo by its own gravity. Since the bulk bag is a flexible bag, there is still excess material inside the bulk bag after the discharging is completed.

[0004] Application No.: 202010998084.8, discloses an automatic bulk bag opener, which includes a bracket, a box body, a lifting device, a clamping device, a cutting device, and a bag mouth receiving device. The lifting device is installed on the upper side of the bracket, the box body is installed on the lower side of the bracket, the clamping device and the cutting device are installed on the upper inner side of the box body, and the bag mouth receiving device is installed on the lower inner side of the box body. The bulk bag is lifted by the lifting device and moved above the box body, the position of the bulk bag mouth enters the box body, the upper and lower sides of the bag mouth are clamped by the clamping device, the cutting device cuts the middle of the bag mouth, and the receiving device is used to receive the dropped bag mouth.

[0005] When cutting the bag mouth in the above patent, the upper and lower sides of the bag mouth are clamped by the clamping device, and there is remaining material at the middle bag mouth position. When cutting the bag mouth, the remaining material falls with the cutting of the bag mouth, resulting in material loss. The lifting cylinder drives the clamping cover to descend and press the bulk bag tightly. After the discharging is completed, pressing the bulk bag tightly will also clamp the material, and it is impossible to empty all the material. The whole machine is controlled by multiple cylinders, the overall structure is complex, and the device needs to transmit signals to the cylinders for control, so the control system needs to be involved in the working process, resulting in an increase in production costs and being not suitable for full promotion and application.

[0006] The applicant has been focusing on researching the technology of discharging the material inside the bulk bag for several years. After a long time of research, an automatic unpacking and discharging device for bulk bags with low production cost, simple structure, and capable of completely emptying the material inside the bulk bag has finally been developed. Summary of the Invention

[0007] Purpose of the invention: The purpose of the present invention is to provide a device for automatically opening and unloading ton bags, so as to solve the technical problems of the existing device, such as the complex structure of the entire equipment, high production cost, material loss during the unloading process, and excess material still existing in the ton bag after the unloading is completed.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic unpacking and unloading device for ton bags, comprising an electric hoist crane, ton bags, an automatic unpacking mechanism, a supporting platform and a silo, the electric hoist crane is hoisted with ton bags, the supporting platform is provided with a silo, the silo is provided with a feed port and a discharge port, and the characteristic is that: the automatic unpacking mechanism is spirally mounted on the feed port by bolts, and one of the four corners on the bottom of the ton bag is located directly above the center of the automatic unpacking mechanism, which is convenient for the cone tip in the automatic unpacking mechanism to break the bag without generating debris of the ton bag.

[0009] Furthermore, the automatic package opening mechanism includes a sealing cover plate, a truncated cone tube, a cross rod, a round rod and a connecting rod. The top surface of the sealing cover plate is provided with a truncated cone tube, and a cross rod is horizontally installed in the truncated cone tube. A group of bearing grooves are provided on the cross rod, and a rotating rod is provided at the center of the bearing groove. A bearing is installed on the round rod, and the bearing sleeve is provided on the rotating rod and rotates in the bearing groove. A group of vertical rods I are installed on the bottom surface of the sealing cover plate, and a convex circular plate is provided between the vertical rods I. The epoxy resin particle material body falls from the annular gap between the drop plate and the truncated cone tube into the convex circular plate, is scattered and falls into the inside of the silo, and the center of the convex circular plate is vertically arranged. A vertical rod II is installed, and a vertical rod III is vertically installed at the center of the vertical rod II. A spring and a blanking tray are sleeved on the vertical rod III. The vertical rod III is fixedly connected to the center of the cross rod. A group of through grooves are arranged along the center circumference of the blanking tray. A group of slide grooves are arranged on the through grooves. A limiting mechanism is slidingly arranged in the slide grooves. The round rod passes through the limiting mechanism and is limited by the limiting mechanism. A pyramid tip is installed on the top of the round rod, and an oblique hook is installed below the pyramid tip. An anti-drop ball is installed on the lower top of the round rod. One end of the connecting rod is movably connected to the cross rod through a hinge I, and the other end is movably connected to the limiting mechanism through a hinge II.

[0010] Furthermore, the limiting mechanism includes a rectangular body, a rectangular through hole and a ball groove. The rectangular through hole is arranged on the rectangular body, and ball grooves are arranged on the left and right sides of the rectangular body. A sphere is arranged in the ball groove. When the spring is extended to the maximum limit, the sphere is tangent to the round rod for precise limiting, so that the tip of each pyramid is close together and does not move. The design of the sphere being tangent to the round rod replaces the direct use of holes to reduce the wear of parts during use. When it is contracted to the maximum limit, the sphere can also be tangent to the round rod and tightly pressed against the ton bag. A group of sliding rods are arranged on both sides of the rectangular body. The sliding rods slide in the sliding grooves. The sliding mechanism can drive the round rod to swing at an angle so that the tip of the pyramid on the round rod breaks the epoxy resin particles and presses toward the ton bag.

[0011] Further, the number of the through grooves is four, and the number of the limiting mechanisms sliding therein is also four.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] Through the structural design of the automatic unpacking mechanism of the present invention, the electric hoist crane lifts the ton bag containing epoxy resin particles, so that one of the four bottom corners of the ton bag is directly above the center of the automatic unpacking mechanism. The electric hoist crane quickly places one bottom corner of the ton bag into the automatic unpacking mechanism and completely enters the automatic unpacking mechanism. The pointed head of the pyramid in the automatic unpacking mechanism pierces the ton bag, and the epoxy resin particles in the ton bag are pressed towards the blanking tray. The spring below the blanking tray is compressed, and the connecting rod is driven to move accordingly, driving the limiting mechanism to slide in the chute and approach the vertical rod III. The pointed head of the cone breaks through the epoxy resin particle mass and presses on the ton bag. The electric hoist crane quickly lifts the ton bag, so that the inclined hook below the pointed head of the pyramid pierces into the ton bag. The ton bag is subjected to two traction forces, namely the electric hoist crane and the inclined hook below the pointed head of the pyramid. The electric hoist crane quickly lifts and lowers at a frequency, shaking the remaining epoxy resin particles in the ton bag into the silo. During this process, the ton bag is not torn apart from the inclined hook;

[0014] The epoxy resin particle mass falls from the annular gap between the blanking tray and the frustum pipe onto the convex circular plate and is scattered into the interior of the silo, which can evenly distribute the material into the silo. After waiting for the discharging to be completed, finally, the electric hoist crane quickly lifts and tears apart the ton bag from the inclined hook, separating the ton bag from the automatic unpacking mechanism. At the moment of tearing apart, the spring quickly rebounds and the spring expands and contracts at a small frequency, so that the epoxy resin particles on the blanking tray are shaken off and fall into the interior of the silo, avoiding material loss. Subsequently, the spring stops acting, and all the pointed heads of the cones lean together and return to the initial state, and can repeat the next unpacking operation. Compared with the prior art, the present invention utilizes the gravity of the material during feeding to drive a series of actions. It is practical and efficient. By quickly lifting and lowering the ton bag with the electric hoist crane, the remaining epoxy resin particles in the ton bag are shaken into the silo. Compared with direct patting, the particles collide with each other back and forth during patting and it takes a long time. However, the ingenious design of the present invention drives the ton bag to shake up and down by using the electric hoist, and the particles can quickly pass through the ton bag. The remaining materials in the ton bag can be cleaned up in a relatively short time. The present invention can empty the ton bag during the whole process cleanly, quickly, conveniently and without material loss without relying on complex mechanical components, and at the same time, the production cost is reduced, achieving the purpose of energy conservation, emission reduction and safe production of enterprises, and is suitable for comprehensive promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional view of the present invention;

[0016] Figure 2Front view of the present invention;

[0017] Figure 3 Side view of the present invention;

[0018] Figure 4 Top view of the present invention;

[0019] Figure 5 Internal structure diagram of the bulk bag unpacking bin and the automatic unpacking mechanism before unpacking of the present invention;

[0020] Figure 6 Internal structure diagram of the bulk bag unpacking bin and the automatic unpacking mechanism after unpacking of the present invention;

[0021] Figure 7 Front view of the bin of the present invention;

[0022] Figure 8 Structure of the automatic unpacking mechanism of the present invention Figure 1 ;

[0023] Figure 9 Structure of the automatic unpacking mechanism of the present invention Figure 2 ;

[0024] Figure 10 Top view of the automatic unpacking mechanism of the present invention;

[0025] Figure 11 Partial three-dimensional view of the automatic unpacking mechanism of the present invention Figure 1 ;

[0026] Figure 12 Of the present invention Figure 11 Enlarged view of part A in;

[0027] Figure 13 Partial three-dimensional view of the automatic unpacking mechanism of the present invention Figure 2 ;

[0028] Figure 14 Of the present invention Figure 13 Enlarged view of part B in;

[0029] Figure 15 Of the present invention Figure 13 Partial cross-sectional view in;

[0030] Figure 16 Of the present invention Figure 15 Enlarged view of part C in;

[0031] Figure 17 Of the present invention Figure 15 Enlarged view of part D in.

[0032] In the figure: 1. Electric hoist crane; 2. Tonne bag; 3. Automatic bag opening mechanism; 4. Support platform; 5. Silo; 6. Feed inlet; 7. Discharge outlet; 8. Bolt; 9. Sealing cover plate; 10. Frustum pipe; 11. Cross bar; 12. Round bar; 13. Connecting rod; 14. Bearing groove; 14-1. Rotating rod; 15. Bearing; 16. Vertical rod I; 17. Convex circular plate; 18. Vertical rod II; 19. Vertical rod III; 20. Spring; 21. Discharge tray; 22. Through groove; 22-1. Slide groove; 23. Limit mechanism; 24. Cone tip; 25. Inclined hook thorn; 26. Anti-disengagement ball; 27. Hinge I; 28. Hinge II; 29. Rectangular body; 30. Rectangular through hole; 31. Ball groove; 32. Sphere; 33. Slide bar. Detailed implementation manners

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] Embodiment 1

[0035] Refer to Figures 1 - 17 As shown in the figure: An automatic bag opening and discharging device for tonne bags includes an electric hoist crane 1, a tonne bag 2, an automatic bag opening mechanism 3, a support platform 4 and a silo 5. The tonne bag 2 is hoisted by the electric hoist crane 1. The support platform 4 is provided with a silo 5. The silo 5 is provided with a feed inlet 6 and a discharge outlet 7. It is characterized in that: The automatic bag opening mechanism 3 is spirally installed on the feed inlet 6 through a bolt 8, and one of the four corners at the bottom of the tonne bag 2 is directly above the center of the automatic bag opening mechanism 3.

[0036] The automatic unpacking mechanism 3 includes a sealing cover plate 9, a frustum tube 10, a cross bar 11, a round bar 12 and a connecting rod 13. A frustum tube 10 is arranged on the top surface of the sealing cover plate 9. A cross bar 11 is horizontally installed in the frustum tube 10. A group of bearing grooves 14 are arranged on the cross bar 11. A rotating rod 14-1 is arranged at the center of the bearing groove 14. A bearing 15 is installed on the round bar 12. The bearing 15 is sleeved on the rotating rod 14-1 and rotates in the bearing groove 14. A group of vertical rods I 16 are installed on the bottom surface of the sealing cover plate 9. A convex circular plate 17 is arranged between the two vertical rods I 16. A vertical rod II 18 is vertically installed at the center of the convex circular plate 17. A vertical rod III 19 is vertically installed at the center of the vertical rod II 18. A spring 20 and a blanking tray 21 are sleeved on the vertical rod III 19. The vertical rod III 19 is fixedly connected with the center of the cross bar 11. A group of through grooves 22 are arranged on the blanking tray 21 along the center in the circumferential direction. A group of sliding grooves 22-1 are arranged on the through grooves 22. A limiting mechanism 23 is slidably arranged in the sliding grooves 22-1. The round bar 12 passes through the limiting mechanism 23 and is limited by the limiting mechanism 23. A pyramid tip 24 is installed at the upper end of the round bar 12. An inclined barb 25 is installed below the pyramid tip 24. An anti-detachment ball 26 is installed at the lower end of the round bar 12. One end of the connecting rod 13 is movably connected with the cross bar 11 through a hinge I 27, and the other end is movably connected with the limiting mechanism 23 through a hinge II 28.

[0037] The limiting mechanism 23 includes a rectangular body 29, a rectangular through hole 30 and a ball groove 31. A rectangular through hole 30 is arranged on the rectangular body 29. Ball grooves 31 are arranged on the left and right inside the rectangular body 29. Spheres 32 are arranged in the ball grooves 31. A group of sliding rods 33 are arranged on both sides of the rectangular body 29. The sliding rods 33 slide in the sliding grooves 22-1.

[0038] The number of the through grooves 22 is 4.

[0039] The working principle of the present invention is as follows: First, the electric hoist crane 1 lifts the ton bag 2 containing epoxy resin particles, so that one of the four corners at the bottom of the ton bag 2 is directly above the center of the automatic unpacking mechanism 3. Then, the electric hoist crane 1 quickly places the ton bag 2 on the automatic unpacking mechanism 3. One corner at the bottom of the ton bag 2 completely enters the automatic unpacking mechanism 3. The pyramid tip 24 in the automatic unpacking mechanism 3 pierces the ton bag 2. Subsequently, the ton bag 2 falls on the cross bar 11 to lift the ton bag 2. The epoxy resin particles in the ton bag 2 press against the blanking plate 21. The epoxy resin particles then fall from the annular gap between the blanking plate 21 and the frustum pipe 10, scatter on the convex circular plate 17 and fall into the interior of the silo 5. At the same time, the spring 20 below the blanking plate 21 is compressed, and the connecting rod 13 is driven to move accordingly, driving the limit mechanism 23 to slide in the chute 22-1. The limit mechanism 23 drives the bottom of the round rod 12 to approach the vertical rod III 19. The cone tip 24 breaks through the epoxy resin particle mass and presses on the ton bag 2. The electric hoist crane 1 quickly lifts the ton bag 2, so that the oblique hook thorn 25 below the pyramid tip 24 pierces into the ton bag 2. The ton bag is subjected to two traction forces from the hoist crane 1 and the oblique hook thorn 25 below the pyramid tip 24. The electric hoist crane 1 quickly lifts and lowers at a certain frequency, shaking the remaining epoxy resin particles in the ton bag 2 into the silo 5. After waiting for the discharging to be completed, finally, the electric hoist crane 1 quickly lifts to tear open the connection between the ton bag 2 and the oblique hook thorn 25, separating the ton bag 2 from the automatic unpacking mechanism 3. At the moment of tearing open, the spring 20 quickly rebounds, and the spring 20 expands and contracts at a low frequency, shaking the epoxy resin particles on the blanking plate 21 into the interior of the silo 5. Subsequently, the spring 20 stops operating, and all the cone tips 24 come together to return to the initial state. The whole process is very convenient and fast to operate, and can be widely applied in the powder production of enterprises. Through the design of the present invention, the potential safety hazards caused by manual unpacking and auxiliary pouring operations are avoided. At the same time, the pouring is clean without material loss during the whole process, and the production cost is also reduced, achieving the purpose of energy conservation, emission reduction and safe production of enterprises.

[0040] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automatic unpacking and discharging device for bulk bags, comprising an electric hoist crane (1), a bulk bag (2), an automatic unpacking mechanism (3), a support platform (4) and a silo (5). The electric hoist crane (1) is hoisted with a bulk bag (2). The support platform (4) is provided with a silo (5). The silo (5) is provided with a feed inlet (6) and a discharge outlet (7), and is characterized in that: The automatic unpacking mechanism (3) is spirally installed on the feed inlet (6) through bolts (8). One of the four corners at the bottom of the ton bag (2) is directly above the center of the automatic unpacking mechanism (3). The automatic unpacking mechanism (3) includes a sealing cover plate (9), a frustum pipe (10), a cross bar (11), a round bar (12) and a connecting rod (13). The frustum pipe (10) is arranged on the top surface of the sealing cover plate (9). The cross bar (11) is horizontally installed in the frustum pipe (10). A set of bearing grooves (14) is arranged on the cross bar (11). A rotating rod (14-1) is arranged at the center of the bearing groove (14). A bearing (15) is installed on the round bar (12). The bearing (15) is sleeved on the rotating rod (14-1) and rotates in the bearing groove (14). A set of vertical rods I (16) is installed on the bottom surface of the sealing cover plate (9). A convex circular plate (17) is arranged between the two vertical rods I (16). A vertical rod II (18) is vertically installed at the center of the convex circular plate (17). A vertical rod III (19) is vertically installed at the center of the vertical rod II (18). A spring (20) and a blanking plate (21) are sleeved on the vertical rod III (19). The vertical rod III (19) is fixedly connected with the center of the cross bar (11). A set of through grooves (22) is arranged circumferentially along the center on the blanking plate (21). A set of sliding grooves (22-1) is arranged on the through grooves (22). A limiting mechanism (23) is slidably arranged in the sliding grooves (22-1). The round bar (12) passes through the limiting mechanism (23) and is limited by the limiting mechanism (23). A pyramid tip (24) is installed at the upper end of the round bar (12). An inclined hook thorn (25) is installed below the pyramid tip (24). An anti-detachment ball (26) is installed at the lower end of the round bar (12). One end of the connecting rod (13) is movably connected with the cross bar (11) through a hinge I (27), and the other end is movably connected with the limiting mechanism (23) through a hinge II (28). The limiting mechanism (23) includes a rectangular body (29), a rectangular through hole (30) and a ball groove (31). The rectangular through hole (30) is arranged on the rectangular body (29). Ball grooves (31) are arranged on the left and right inside the rectangular body (29). Spheres (32) are arranged in the ball grooves (31). A set of sliding rods (33) is arranged on both sides of the rectangular body (29). The sliding rods (33) slide in the sliding grooves (22-1). The number of the through grooves (22) is 4.

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