An automatic material weighing and ton bag packaging machine

Abstract

This application relates to an automatic material weighing and ton bag packaging machine, which includes a base plate, a bag lifting frame on the base plate, hooks corresponding to the four lifting lugs of the ton bag, a material dispensing assembly and a drive assembly on the base plate, the material dispensing assembly including a rotating shaft, a groove in the center of the base plate for rotatable engagement with the rotating shaft, a material dispensing plate on the outer surface of the rotating shaft, the material dispensing plate abutting against the bottom surface of the ton bag, and the drive assembly driving the rotating shaft to reciprocate. This application has the effect of slowing down the accumulation speed of material in the middle of the ton bag and reducing material waste.

Description

Technical Field

[0001] This application relates to the field of packaging equipment technology, and in particular to an automatic material weighing ton bag packaging machine. Background Technology

[0002] Ton bags are a common packaging material with advantages such as moisture-proof, dust-proof and radiation-resistant properties. They are widely used in the production industry of powdery or granular materials. When packaging ton bags, ton bag packaging machines are usually used to fill the ton bags with materials.

[0003] Existing ton bag packaging machines include a frame with hooks at the four corners for hanging ton bags. A feeding pipe connected to the feeding device is installed at the top of the frame. When packaging ton bags, workers first connect the four lifting lugs on the ton bag to the hooks, then place the filling port of the ton bag onto the feeding pipe, secure the filling port with straps, and finally turn on the feeding device to allow the material to enter the ton bag through the feeding pipe.

[0004] However, in actual packaging operations, because the material is injected vertically directly into the ton bag from the feed pipe, it is easily concentrated and piled up in the middle area of ​​the ton bag near the filling port due to gravity and the material's own fluidity. It cannot spread outwards in time, which leads to a faster accumulation speed of the material in the middle. When the material quickly approaches or even touches the edge of the filling port, the subsequent material falling from the feed pipe will drive the surrounding air to form a local airflow. The airflow directly impacts the material that is close to the filling port, which can easily lift the surface material and carry it out through the gap between the filling port and the feed pipe, resulting in material loss and waste, which is obviously inadequate. Utility Model Content

[0005] In order to slow down the accumulation rate of materials in the middle of the ton bag and reduce material waste, this application provides an automatic material weighing ton bag packaging machine.

[0006] The automatic material weighing and ton bag packaging machine provided in this application adopts the following technical solution:

[0007] An automatic material weighing and ton bag packaging machine includes a base plate, a bag lifting frame on the base plate, hooks on the bag lifting frame corresponding to the four lifting lugs of the ton bag, a feed pipe at the top of the bag lifting frame, and a bag fixing assembly on the bag lifting frame to fix the filling port of the ton bag to the outer periphery of the feed pipe. The base plate also includes a material dispersing assembly and a driving assembly. The material dispersing assembly includes a rotating shaft, a groove at the center of the base plate that rotatably engages with the rotating shaft, a material dispersing plate on the outer surface of the rotating shaft that abuts against the bottom surface of the ton bag, and the driving assembly driving the rotating shaft to reciprocate.

[0008] By adopting the above technical solution, during packaging, the four lifting lugs on the ton bag are hung on the hooks in sequence. Then, the bag fixing assembly is used to secure the ton bag's filling port to the outer periphery of the feeding pipe, reducing the gap between the filling port and the feeding pipe. During the filling process, the drive assembly drives the rotating shaft to swing back and forth. The rotating shaft drives the material distribution plate to push the bottom surface of the ton bag back and forth, causing the material accumulated in the middle area to spread to the sides of the ton bag. This improves the uniformity of material distribution inside the ton bag, thereby reducing the accumulation speed of the material in the middle and reducing the possibility of subsequent falling material escaping through the gaps, thus reducing material waste.

[0009] Optionally, the bulk material assembly further includes four striking arc plates disposed on the outer periphery of the ton bag. The four striking arc plates press against the outer surface of the ton bag. The bottom plate has a sliding groove in the radial direction that slides with the striking arc plates. A pull rope corresponding to each of the four striking arc plates is wound around the rotating shaft. The free end of the pull rope extends into the sliding groove and is disposed on the corresponding striking arc plate. A return spring is disposed at the end of the sliding groove away from the pull rope. The elastic force of the return spring drives the striking arc plate to detach from the outer surface of the ton bag.

[0010] By adopting the above technical solution, when the rotating shaft swings in the forward direction, the rotating shaft simultaneously winds up the four pull ropes, which pull the striking arc plate to slide towards the ton bag until it squeezes the outer surface of the ton bag; when the rotating shaft swings in the reverse direction, the pull ropes are released, and the elastic force of the return spring drives the striking arc plate to return to its original position along the sliding groove and detach from the outer surface of the ton bag. In this way, the striking arc plate continues to strike the ton bag along with the movement of the material distribution plate, further breaking the static trend of concentrated accumulation of material in the middle, improving the uniformity of material distribution in the ton bag, and further slowing down the accumulation speed of material in the middle of the ton bag.

[0011] Optionally, the drive assembly includes a rack plate, a limiting groove that slides with the rack plate on the outer surface of the base plate, a gear that meshes with the rack plate coaxially at the end of the rotating shaft, a reciprocating screw rotatably connected to the outer surface of the base plate, a nut block that threadedly engages with the reciprocating screw on the rack plate, and a motor that drives the rack plate to rotate on the base plate.

[0012] By adopting the above technical solution, the motor drives the reciprocating screw to rotate. Under the restriction of the limiting groove, the rack plate moves linearly back and forth along the sliding groove as the reciprocating screw rotates, thereby causing the meshing gears to oscillate back and forth within a certain range, realizing the material dispersing action of the bulk material assembly.

[0013] Optionally, the bag fixing assembly includes two fixing frames sleeved on the outer periphery of the feed tube. The two fixing frames are arranged opposite to each other and hinged to the outer periphery of the feed tube. Double-headed cylinders that drive the fixing frames to rotate are provided on opposite sides of the feed tube. The two piston rods of the double-headed cylinders are respectively hinged to the two fixing frames. Each fixing frame is provided with a pressing arc plate.

[0014] By adopting the above technical solution, after the filling port of the ton bag is fitted onto the outer surface of the feed pipe, the piston rods of the two double-headed cylinders retract synchronously, pulling the two fixed frames to rotate around the hinge point toward the ton bag. The fixed frames drive the pressing arc plates to gradually approach the outer wall of the filling port of the ton bag. As the piston rods continue to retract, the two pressing arc plates clamp the outer wall of the filling port from both sides, tightly fixing the filling port to the outer periphery of the feed pipe, thereby reducing the gap between the filling port and the feed pipe and reducing the possibility of material waste due to leakage.

[0015] Optionally, the bag rack is provided with support rods corresponding to the four hooks one by one, and each hook is slidably mounted on the corresponding support rod through a connecting assembly.

[0016] By adopting the above technical solution, when the specifications of the ton bag change, the worker can change the position of the hook on the support rod by sliding the hook of the connecting component, thereby ensuring that the ton bag remains upright after being suspended, avoiding the accumulation of material in the middle due to the tilt of the ton bag, and improving the applicability of the packaging machine.

[0017] Optionally, the connecting assembly includes a connecting plate disposed on the hook, a connecting seat slidably connected to the support rod, and a plurality of clamping bolts passing through the connecting seat, the threaded portion of the clamping bolts being threadedly connected to the connecting seat.

[0018] By adopting the above technical solution, during adjustment, loosening the clamping bolts creates a gap between the connecting seat and the support rod. After the connecting seat slides along the support rod to the target position, the clamping bolts on both sides of the connecting seat are tightened. The fixing part of the clamping bolts presses the connecting seat against the support rod, thereby locking the hook onto the support rod and fixing the hook position. This achieves the adjustment of the hook position.

[0019] Optionally, a dust cover, which is a breathable bag, is connected to the feed pipe.

[0020] By adopting the above technical solution, the dust cover can allow excess air inside the ton bag to be discharged through its own breathability, thereby achieving air pressure balance inside and outside the ton bag, while intercepting the material lifted by the airflow and reducing material loss.

[0021] Optionally, a protective box is provided on the base plate, the drive assembly is disposed inside the protective box, and an inspection door is hinged to the protective box.

[0022] By adopting the above technical solution, the protective box prevents external dust from entering the drive assembly, thereby reducing the possibility of transmission jamming caused by dust blockage, ensuring that the drive assembly stably drives the rotating shaft to oscillate back and forth, and ensuring the normal operation of the bulk material assembly.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. In this embodiment of the application, by setting up a bulk material assembly and a drive assembly, during the filling process, the drive assembly drives the rotating shaft to swing back and forth, the rotating shaft drives the bulk material plate to push the bottom surface of the ton bag back and forth, and at the same time, the surrounding patting arc plates pat the outer periphery of the ton bag back and forth, so that the material accumulated in the middle area spreads to the periphery of the ton bag, the uniformity of the material distribution in the ton bag is improved, thereby reducing the accumulation speed of the material in the middle, reducing the possibility of subsequent falling material escaping from the gaps, thereby reducing material waste;

[0025] 2. By setting up a connecting component, when the size of the ton bag changes, the worker can slide the hook on the connecting component to change the position of the hook on the support rod, thereby ensuring that the ton bag remains upright after being suspended, avoiding the accumulation of material in the middle due to the tilting of the ton bag, and improving the applicability of the packaging machine. Attached Figure Description

[0026] Figure 1 This is a structural diagram of this application.

[0027] Figure 2 This is a schematic diagram of the structure of the bag-fixing assembly in an embodiment of this application.

[0028] Figure 3 This is a schematic diagram of the structure of the bulk material assembly and the drive assembly in the embodiments of this application.

[0029] Explanation of reference numerals in the attached drawings: 1. Base plate; 101. Groove; 102. Sliding groove; 2. Bag holder; 21. Support rod; 22. Hook; 23. Hook rope; 3. Feed pipe; 31. Dust cover; 4. Connecting assembly; 41. Connecting plate; 42. Connecting seat; 43. Tightening bolt; 5. Bag fixing assembly; 51. Fixing frame; 52. Double-headed cylinder; 53. Pressing arc plate; 6. Material dispersing assembly; 61. Rotating shaft; 62. Material dispersing plate; 63. Beating arc plate; 64. Pull rope; 65. Return spring; 7. Drive assembly; 71. Rack plate; 72. Gear; 73. Reciprocating screw; 74. Motor; 8. Protective box. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0031] This application discloses an automatic material weighing and ton bag packaging machine.

[0032] Reference Figure 1 and Figure 2 An automatic material weighing and ton bag packaging machine includes a base plate 1. The base plate 1 has a built-in weighing sensor (not shown in the figure) for weighing the ton bags. A bag lifting frame 2 is fixedly installed on the base plate 1. A feeding pipe 3 connected to a feeding device is installed in the middle of the bag lifting frame 2. A dust cover 31 is connected to the feeding pipe 3. The dust cover 31 is a breathable bag. During the feeding process, the dust cover 31 balances the air pressure between the feeding pipe 3 and the ton bag, and at the same time intercepts the material lifted by the airflow, reducing material loss.

[0033] Reference Figure 1 and Figure 2 Four support rods 21 are fixedly installed radially on the top of the bag frame 2. Each support rod 21 is connected to a hook 22 via a connecting assembly 4. The four hooks 22 correspond one-to-one with the four lifting lugs on the ton bag. The hooks 22 are hooked with hook ropes 23 for hooking the lifting lugs. The connecting assembly 4 includes a connecting plate 41 fixedly connected to the hook 22. A connecting seat 42 is slidably connected to the support rod 21. The connecting seat 42 is arranged in a geometric shape. Multiple clamping bolts 43 are threaded through the connecting seat 42. In this embodiment, there are four clamping bolts 43. Two clamping bolts 43 are threaded through each of the opposite sides of the connecting seat 42. The threaded part of the clamping bolt 43 is threadedly connected to the connecting seat 42.

[0034] When suspending the ton bag, the clamping bolt 43 is in a loose state. The worker slides the four connecting seats 42 one by one to the position that matches the lifting lug of the ton bag. Then, the clamping bolts 43 on both sides of the connecting seat 42 are tightened. The fixing part of the clamping bolt 43 presses the connecting seat 42 against the support rod 21, so that the hook 22 is locked on the support rod 21. After the adjustment is completed, the worker suspends the four lifting lugs of the ton bag one by one and then fixes the hook 22. In this way, the ton bags of different specifications can be suspended, which improves the applicability of the packaging machine.

[0035] Reference Figure 1 and Figure 2 The bag holder 2 is equipped with a bag fixing assembly 5. Specifically, the bag fixing assembly 5 includes two fixing frames 51 and two double-headed cylinders 52. The two fixing frames 51 are arranged opposite to each other on the outer periphery of the feed pipe 3. The two ends of each fixing frame 51 are hinged to the outer periphery of the feed pipe 3. The piston rod of each double-headed cylinder 52 is fixedly connected to the two fixing frames 51 respectively. Each fixing frame 51 has a pressing arc plate 53 fixedly connected to the surface facing the feed pipe 3.

[0036] After the ton bag is suspended, the worker places the filling port of the ton bag on the outer periphery of the feed pipe 3, and then simultaneously starts two double-headed cylinders 52. The piston rods of the two double-headed cylinders 52 retract synchronously, pulling the two fixed frames 51 to rotate around the hinge point toward the ton bag. The fixed frames 51 drive the pressing arc plates 53 to gradually approach the outer wall of the filling port of the ton bag. As the piston rods continue to retract, the two pressing arc plates 53 simultaneously clamp the outer wall of the filling port from both sides, and firmly fix the filling port to the outer periphery of the feed pipe 3. This eliminates the gap between the filling port and the feed pipe 3, reducing the possibility of material waste due to leakage.

[0037] Reference Figure 1 and Figure 3 A bulk material assembly 6 is provided on the bottom plate 1. The bulk material assembly 6 includes a rotating shaft 61. A groove 101 is provided at the center of the bottom plate 1 to rotate and cooperate with the rotating shaft 61. A bulk material plate 62 is fixedly connected to the outer surface of the rotating shaft 61. The width of the bulk material plate 62 is greater than the diameter of the feed pipe 3, and the edge is rounded. When the bulk material plate 62 is not rotating, the bulk material plate 62 abuts against the bottom surface of the ton bag.

[0038] Reference Figure 1 and Figure 3 The bulk material assembly 6 also includes four striking arc plates 63 disposed on the outer periphery of the ton bag. The bottom plate 1 has a sliding groove 102 that slides with the striking arc plates 63 in a radial direction. A pull rope 64 corresponding to each of the four striking arc plates 63 is wound around the rotating shaft 61. The bulk material plate 62 has a clearance groove for the pull rope 64 to be wound around. The free end of the pull rope 64 extends into the sliding groove 102 and is fixedly connected to the corresponding striking arc plate 63. A return spring 65 is disposed in the sliding groove 102. One end of the return spring 65 is fixedly connected to the inner side wall of the sliding groove 102 away from the pull rope 64, and the other end is fixedly connected to the striking arc plate 63. The elastic force of the return spring 65 drives the striking arc plate 63 to detach from the outer surface of the ton bag. When the striking arc plate 63 is located at the end of the sliding groove 102 near the groove 101, the striking arc plate 63 squeezes the outer surface of the ton bag.

[0039] Reference Figure 1 and Figure 3 A drive assembly 7 is provided on the base plate 1. The drive assembly 7 includes a rack plate 71. A limiting groove (not shown in the figure) is opened on the outer surface of the base plate 1 to slide with the rack plate 71. The limiting groove is perpendicular to the length direction of the groove 101. The end of the rotating shaft 61 extends to the outer surface of the base plate 1 and is coaxially fixedly connected to a gear 72 that meshes with the rack plate 71. A reciprocating screw 73 is rotatably connected to the outer surface of the base plate 1. The reciprocating screw 73 is parallel to the length direction of the limiting groove. A nut block that is threadedly engaged with the reciprocating screw 73 is fixedly connected to the rack plate 71. A motor 74 is fixedly installed on the base plate 1. The output shaft of the motor 74 is coaxially fixedly connected to the reciprocating screw 73.

[0040] After the ton bag is fixed, the feeding device and motor 74 are started. During the feeding process, the motor 74 drives the reciprocating screw 73 to rotate. Under the restriction of the limiting groove, the rack plate 71 moves back and forth in a straight line along the sliding groove 102 as the reciprocating screw 73 rotates. The rack plate 71 drives the rotating shaft 61 to swing back and forth within a certain range through the meshing gear 72. The rotating shaft 61 drives the material distribution plate 62 to push the bottom of the ton bag back and forth, so that the material accumulated in the middle area spreads to the sides of the ton bag.

[0041] Simultaneously, when the rotating shaft 61 swings forward, it simultaneously winds up the four pull ropes 64, which pull the striking arc plate 63 towards the ton bag until it squeezes the outer surface of the ton bag. When the rotating shaft 61 swings in the opposite direction, the pull ropes 64 are released, and the elastic force of the return spring 65 drives the striking arc plate 63 to return to its original position along the sliding groove 102 and detach from the outer surface of the ton bag. This allows the striking arc plate 63 to continuously strike the ton bag along with the movement of the material distribution plate 62, further breaking the static trend of concentrated accumulation of material in the middle. The setting of the material distribution component 6 allows the material to spread outwards in the ton bag, improving the uniformity of material distribution in the ton bag, slowing down the accumulation speed of material in the middle of the ton bag, and reducing the possibility of subsequent falling material escaping from the gaps, thereby reducing material waste.

[0042] Reference Figure 1 and Figure 3 A protective box 8 is fixedly installed on the outer surface of the base plate 1. The protective box 8 covers the outer periphery of the drive assembly 7. A maintenance door is hinged on the protective box 8. The protective box 8 can prevent external dust from entering the drive assembly 7, thereby reducing the possibility of transmission jamming caused by dust blockage in the drive assembly 7, ensuring that the drive assembly 7 stably drives the rotating shaft 61 to swing back and forth, and ensuring the normal operation of the bulk material assembly 6.

[0043] The implementation principle of an automatic material weighing ton bag packaging machine according to an embodiment of this application is as follows: After the ton bag is fixed, the feeding device and motor 74 are started. During the feeding process, the motor 74 drives the reciprocating screw 73 to rotate. Under the restriction of the limiting groove, the rack plate 71 moves linearly back and forth along the sliding groove 102 as the reciprocating screw 73 rotates. The rack plate 71 drives the rotating shaft 61 to swing back and forth within a certain range through the meshing gear 72. The rotating shaft 61 drives the material distribution plate 62 to push the bottom surface of the ton bag back and forth, so that the material accumulated in the middle area spreads to the sides of the ton bag.

[0044] Simultaneously, when the rotating shaft 61 swings forward, it simultaneously winds up the four pull ropes 64, which pull the striking arc plate 63 towards the ton bag until it squeezes the outer surface of the ton bag. When the rotating shaft 61 swings in the opposite direction, the pull ropes 64 are released, and the elastic force of the return spring 65 drives the striking arc plate 63 to return to its original position along the sliding groove 102 and detach from the outer surface of the ton bag. This allows the striking arc plate 63 to continuously strike the ton bag along with the movement of the material distribution plate 62, further breaking the static trend of concentrated accumulation of material in the middle. The setting of the material distribution component 6 allows the material to spread outwards in the ton bag, improving the uniformity of material distribution in the ton bag, slowing down the accumulation speed of material in the middle of the ton bag, and reducing the possibility of subsequent falling material escaping from the gaps, thereby reducing material waste.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic material weighing and ton bag packaging machine, comprising a base plate (1), wherein a bag lifting frame (2) is provided on the base plate (1), wherein the bag lifting frame (2) is provided with hooks (22) corresponding one-to-one with the four lifting lugs of the ton bag, and a feed pipe (3) is provided at the top of the bag lifting frame (2), characterized in that, The bag holder (2) is provided with a bag fixing assembly (5) that fixes the ton bag filling port to the outer periphery of the feed pipe (3). The bottom plate (1) is provided with a material dispersing assembly (6) and a drive assembly (7). The material dispersing assembly (6) includes a rotating shaft (61). The bottom plate (1) has a groove (101) at the center that rotates with the rotating shaft (61). The outer surface of the rotating shaft (61) is provided with a material dispersing plate (62). The material dispersing plate (62) abuts against the bottom surface of the ton bag. The drive assembly (7) drives the rotating shaft (61) to swing back and forth.

2. The automatic material weighing and ton bag packaging machine according to claim 1, characterized in that, The bulk material assembly (6) also includes four striking arc plates (63) disposed on the outer periphery of the ton bag. The four striking arc plates (63) press against the outer surface of the ton bag. The bottom plate (1) has a sliding groove (102) that slides with the striking arc plates (63) in a radial direction. A pull rope (64) corresponding to each of the four striking arc plates (63) is wound around the rotating shaft (61). The free end of the pull rope (64) extends into the sliding groove (102) and is disposed on the corresponding striking arc plate (63). A return spring (65) is disposed at the end of the sliding groove (102) away from the pull rope (64). The elastic force of the return spring (65) drives the striking arc plate (63) to detach from the outer surface of the ton bag.

3. The automatic material weighing and ton bag packaging machine according to claim 1, characterized in that, The drive assembly (7) includes a rack plate (71), and the outer surface of the base plate (1) is provided with a limiting groove that slides with the rack plate (71). The end of the rotating shaft (61) is coaxially provided with a gear (72) that meshes with the rack plate (71). The outer surface of the base plate (1) is rotatably connected to a reciprocating screw (73). The rack plate (71) is provided with a nut block that is threadedly engaged with the reciprocating screw (73). The base plate (1) is provided with a motor (74) that drives the rack plate (71) to rotate.

4. The automatic material weighing and ton bag packaging machine according to claim 1, characterized in that, The bag fixing assembly (5) includes two fixing frames (51) sleeved on the outer periphery of the feed pipe (3). The two fixing frames (51) are arranged opposite to each other and hinged to the outer periphery of the feed pipe (3). A double-headed cylinder (52) is provided on opposite sides of the feed pipe (3) to drive the fixing frames (51) to rotate. The two piston rods of the double-headed cylinder (52) are respectively hinged to the two fixing frames (51). Each fixing frame (51) is provided with a pressing arc plate (53).

5. The automatic material weighing and ton bag packaging machine according to claim 1, characterized in that, The bag rack (2) is provided with support rods (21) corresponding to the four hooks (22) one by one. Each hook (22) is slidably mounted on the corresponding support rod (21) through the connecting component (4).

6. The automatic material weighing and ton bag packaging machine according to claim 5, characterized in that, The connecting assembly (4) includes a connecting plate (41) disposed on the hook (22), a connecting seat (42) is slidably connected to the support rod (21), and a plurality of clamping bolts (43) are passed through the connecting seat (42), the threaded portion of the clamping bolts (43) being threadedly connected to the connecting seat (42).

7. The automatic material weighing and ton bag packaging machine according to claim 1, characterized in that, A dust cover (31) is connected to the feed pipe (3), and the dust cover (31) is a breathable bag.

8. The automatic material weighing and ton bag packaging machine according to claim 3, characterized in that, A protective box (8) is provided on the base plate (1), the drive assembly (7) is located inside the protective box (8), and an inspection door is hinged on the protective box (8).

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