Bag opening and discharging device for small-bag packaging materials

Abstract

The utility model relates to a bag opening and discharging device for small-bag packaging materials. The bag opening and discharging device comprises a first air cylinder arranged above a stock bin and a second air cylinder fixed to the side wall face of the stock bin. A guide rod of the first air cylinder is connected with a pin shaft, symmetrically-arranged mounting plates are rotationally mounted on the outer circumferential surface of the pin shaft, the two mounting plates are mounted at the bottom of the cover plate through a hinge mechanism in a matched mode, and a suction cup assembly is mounted at the bottom of the single mounting plate in a matched mode; guide rods of the second cylinders are connected with cutters. By arranging the first air cylinder, the suction cup assembly, the mounting plate, the hinge mechanism, the pin shaft, the cutter and the second air cylinder, discharging, grabbing, bag breaking and unloading of workpieces can be automatically completed, it can be guaranteed that all materials in the workpieces fall into the stock bin, the labor cost is effectively reduced, the labor intensity of workers is relieved, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of bag opening device technology, and in particular to a bag opening and unloading device for small bag packaged materials. Background Technology

[0002] In industrial production, packaging forms other than ton bags are collectively referred to as small bag packaging, which has diverse designs and high flexibility of use.

[0003] In existing technologies, due to the diverse specifications and styles of small-bag packaging, manual opening is often required. This method of opening packaging is inefficient, leading to reduced production efficiency. Furthermore, manual opening is physically demanding and involves a harsh working environment, with operators exposed to dust for extended periods, posing a serious threat to their health. Utility Model Content

[0004] Therefore, it is necessary to provide a bag opening and unloading device for small bag packaged materials, which addresses the problems of high labor intensity, harsh working environment, and low opening efficiency in existing small bag packaging methods.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A bag-opening and unloading device for small-bag packaged materials includes a first cylinder arranged above the hopper and a second cylinder fixed to the side wall of the hopper.

[0007] The guide rod of the first cylinder is connected to the pin shaft. The outer circumference of the pin shaft is rotatably mounted with symmetrically arranged mounting plates. The two mounting plates are mounted on the bottom of the cover plate through a hinge mechanism. A suction cup assembly is mounted on the bottom of each mounting plate.

[0008] The guide rod of the second cylinder is connected to the cutter. When the second cylinder extends or retracts, it drives the cutter to reciprocate linearly in the horizontal direction. The cutter's blade then cuts through the suction cup assembly, which in turn grips the workpiece. When the first cylinder retracts, it drives the pin to move vertically upward in a linear motion. This causes the two mounting plates to rotate and open around the pin, allowing all the material in the workpiece to fall into the hopper.

[0009] As a further improvement to the above technical solution:

[0010] The first cylinder is fixed to the top of the rotary cylinder. The output end of the rotary cylinder is connected to the cover plate. The rotary cylinder drives the cover plate to rotate, thereby causing the two mounting plates to rotate simultaneously, so that the suction cup assembly corresponds to the placement position of the workpiece.

[0011] The first cylinder is fixed to the top of the rotary cylinder by a mounting base, which is connected to the working end of the robotic arm.

[0012] The rotary cylinder has a clearance hole in the middle for the guide rod of the first cylinder to pass through.

[0013] The hinge mechanism is structured as follows: it includes a first lug fixed to the bottom of the cover plate and a second lug fixed to the top of the two mounting plates respectively. The two second lugs are connected to the first lug by two connecting rods respectively.

[0014] A single link is hinged to the corresponding end of the first lug.

[0015] Each link is hinged to the corresponding second lug.

[0016] Several pin sleeves are provided on the side wall of a single mounting plate for installation with a pin shaft.

[0017] A guide block is fitted on the outer circumferential surface of the guide rod of the second cylinder. A through hole is opened on the end face of the guide block, and a guide rod is slidably installed in the through hole. The guide rod of the second cylinder extends or retracts, thereby driving the guide block to reciprocate linearly along the axial direction of the guide rod.

[0018] The guide rod is fixed to the inner wall of the hopper, or to the cylinder body of the second cylinder.

[0019] The beneficial effects of this utility model are as follows:

[0020] This utility model has a compact and reasonable structure and is easy to operate. By setting up a first cylinder, a suction cup assembly, a mounting plate, a hinge mechanism, a pin, a cutting tool, and a second cylinder, it can automatically complete the unloading of workpieces, realize gripping, bag breaking and unloading, and ensure that all the material in the workpiece falls into the hopper, effectively reducing labor costs, reducing the intensity of manual labor, and improving production efficiency.

[0021] This utility model also has the following advantages:

[0022] (1) By setting a rotary cylinder, the cover plate can be driven to rotate 90°, thereby enabling the suction cup assembly to adsorb and grab workpieces placed horizontally or vertically, improving the flexibility of the bag opening and unloading device.

[0023] (2) By setting a cover plate with a sealing ring, when the robotic arm drives the cover plate to fasten at the feed inlet of the hopper, the sealing ring can achieve a sealed installation between the cover plate and the feed hopper, thereby preventing dust generated during workpiece unloading from escaping from the feed hopper and preventing dust from harming the health of operators.

[0024] (3) By setting a hinge mechanism, pin and pin sleeve, the linear motion of the first cylinder guide rod can be converted into the rotational motion of the mounting plate. Thus, during the rotation and opening of the mounting plate, the workpiece is pulled by the suction cup assembly, which facilitates the complete unloading of the workpiece.

[0025] (4) By setting guide blocks and guide rods, the stability of the tool moving in a straight line in the horizontal direction can be improved, and the neat cuts made by the tool can be effectively guaranteed. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model.

[0027] Figure 2 This is a schematic diagram of the structure of this utility model, omitting the material hopper.

[0028] Figure 3 for Figure 2 The main view.

[0029] Figure 4 for Figure 2 The right view.

[0030] The components are: 1. hopper; 2. cover plate; 3. first cylinder; 4. pin sleeve; 5. mounting base; 6. rotary cylinder; 7. suction cup assembly; 8. mounting plate; 9. hinge mechanism; 10. pin shaft; 11. cutting tool; 12. second cylinder; 13. guide block; 14. guide rod; 15. workpiece; 16. connecting rod.

[0031] 901. First ear seat; 902. Second ear seat; 903. Connecting rod. Detailed Implementation

[0032] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0033] The structure and function of this utility model are as follows:

[0034] like Figures 1-4As shown, a bag-opening and unloading device for small-bag packaged materials includes a first cylinder 3 arranged above a hopper 1 and a second cylinder 12 fixed to the side wall of the hopper 1. The guide rod of the first cylinder 3 is connected to a pin 10. A symmetrically arranged mounting plate 8 is rotatably mounted on the outer circumference of the pin 10. The two mounting plates 8 are mounted on the bottom of a cover plate 2 through a hinge mechanism 9. A suction cup assembly 7 is mounted on the bottom of each mounting plate 8. The guide rod of the second cylinder 12 is connected to a cutter 11. The second cylinder 12 extends or retracts, thereby driving the cutter 11 to reciprocate linearly in the horizontal direction. The blade of the cutter 11 cuts open the workpiece 15 gripped by the suction cup assembly 7. When the first cylinder 3 retracts, it drives the pin 10 to move vertically upward, thereby causing the two mounting plates 8 to rotate and open around the pin 10, so that all the material in the workpiece 15 falls into the hopper 1. By setting up a first cylinder 3, a suction cup assembly 7, a mounting plate 8, a hinge mechanism 9, a pin 10, a cutting tool 11, and a second cylinder 12, the workpiece 15 can be automatically discharged, ensuring that all the material in the workpiece 15 falls into the hopper 1, effectively reducing labor costs, alleviating labor intensity, and improving production efficiency.

[0035] In this invention, workpiece 15 is a small bag package, and suction cup assembly 7 is connected to an external negative pressure source. Based on the principle of negative pressure, it can stably pick up small bags of various specifications and forms, effectively ensuring the working stability of the bag opening and unloading device.

[0036] The first cylinder 3 is fixed to the top of the rotary cylinder 6. The output end of the rotary cylinder 6 is connected to the cover plate 2. The rotary cylinder 6 drives the cover plate 2 to rotate, thereby causing the two mounting plates 8 to rotate simultaneously, so that the suction cup assembly 7 corresponds to the placement position of the workpiece 15. By setting the rotary cylinder 6, the cover plate 2 can be driven to rotate 90°, so that the suction cup assembly 7 can adsorb and grab the workpiece 15 placed horizontally or vertically, improving the flexibility of the bag opening and unloading device.

[0037] The first cylinder 3 is fixed to the top of the rotary cylinder 6 via a mounting base 5, which is connected to the working end of the robotic arm. The bag-opening and unloading device of this invention moves under the drive of the robotic arm.

[0038] In this invention, the robotic arm includes industrial robots, robotic hands, gantry robots, and other automated mechanical devices that can drive the bag opening and unloading device of this invention to move within a certain spatial range.

[0039] In addition, such as Figures 2-3 As shown, the guide rod of the first cylinder 3 is connected to the connecting rod 16, and the guide rod of the first cylinder 3 is connected to the pin 10 through the connecting rod 16. The axial direction of the connecting rod 16 is perpendicular to the axial direction of the pin 10.

[0040] A sealing ring is provided on the outer side wall of the cover plate 2. When the cover plate 2 is fastened to the feed inlet of the hopper 1 by the mechanical arm, the sealing ring can achieve a sealed installation between the cover plate 2 and the feed hopper 1, thereby preventing the dust generated when the workpiece 15 is unloaded from escaping from the feed hopper 1 and preventing the dust from harming the health of the operators.

[0041] The rotary cylinder 6 has a clearance hole in its middle for the guide rod of the first cylinder 3 to pass through. In order to avoid interference with the movement of the guide rod of the first cylinder 3, the rotary cylinder 6 with a clearance hole in its middle is selected, so as to achieve concentric installation between the first cylinder 3, the rotary cylinder 6, and the cover plate 2, and improve the working stability of the device.

[0042] The hinge mechanism 9 comprises a first lug 901 fixed to the bottom of the cover plate 2, and second lugs 902 respectively fixed to the tops of the two mounting plates 8. The two second lugs 902 are connected to the first lug 901 by two connecting rods 903. By setting the hinge mechanism 9, the linear motion of the guide rod of the first cylinder 3 can be converted into the rotational motion of the mounting plate 8, facilitating the complete unloading of the workpiece 15.

[0043] A single connecting rod 903 is hinged to the corresponding end of the first support 901. The first support 901 is an annular support, which facilitates its cooperation with multiple connecting rods 903.

[0044] A single link 903 is hinged to its corresponding second lug 902. Two links 903 are connected to two second lugs 902 in a one-to-one correspondence.

[0045] Several pin sleeves 4 are provided on the side wall of a single mounting plate 8 for mounting with the pin shaft 10. The pin sleeves 4 and the corresponding mounting plate 8 adopt an integral structure and are installed on the outer circumferential surface of the pin shaft 10, which can realize the rotational engagement between the corresponding mounting plate 8 and the pin shaft 10.

[0046] A guide block 13 is fitted onto the outer circumference of the guide rod of the second cylinder 12. A through hole is formed on the end face of the guide block 13, and a guide rod 14 is slidably installed in the through hole. When the guide rod of the second cylinder 12 extends or retracts, it drives the guide block 13 to reciprocate linearly along the axial direction of the guide rod 14. By setting the guide block 13 and the guide rod 14, the stability of the tool 11 in linear motion in the horizontal direction can be improved, effectively ensuring that the cut made by the tool 11 is neat.

[0047] The guide rod 14 is fixed to the inner wall of the hopper 1, or to the cylinder body of the second cylinder 12. The axial direction of the guide rod 14 is parallel to the horizontal direction, making it easy to install and allowing for flexible installation methods.

[0048] The working process of this utility model is as follows:

[0049] The robotic arm drives the suction cup assembly 7 away from the hopper 1 via the mounting base 5, rotary cylinder 6, cover plate 2, and mounting plate 8, and moves it to directly above the workpiece 15. Subsequently, the cover plate 2 does not flip and remains in its original position, or the rotary cylinder 6 drives the cover plate 2 to rotate 90° to ensure that the suction cup assembly 7 is facing the workpiece 15.

[0050] When the external negative pressure source is activated, the suction cup assembly 7 adsorbs and grabs the workpiece, and then enters the hopper 1 under the drive of the robotic arm, so that the cover plate 2 is engaged with the feed port of the hopper 1.

[0051] The second cylinder 12 extends and drives the cutter 11 to move linearly along the axis of the guide rod 14, so that the cutting edge of the cutter 11 cuts a hole on the bottom end face of the workpiece 15, and the material in the workpiece 15 falls into the hopper 1.

[0052] During the material feeding process in workpiece 15, the first cylinder 3 retracts, thereby driving the two mounting plates 8 to rotate and open, which in turn makes the opening at the bottom of workpiece 15 larger, so as to ensure that all the material in workpiece 15 can fall into the hopper 1.

[0053] The materials in silo 1 are transported to the next process stage using a positive or negative pressure pneumatic conveying system.

[0054] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A bag-opening and unloading device for small-bag packaged materials, characterized in that: It includes a first cylinder (3) arranged above the silo (1) and a second cylinder (12) fixed to the side wall of the silo (1); The guide rod of the first cylinder (3) is connected to the pin (10). The outer circumference of the pin (10) is rotatably mounted with symmetrically arranged mounting plates (8). The two mounting plates (8) are mounted on the bottom of the cover plate (2) through a hinge mechanism (9). The bottom of each mounting plate (8) is fitted with a suction cup assembly (7). The guide rod of the second cylinder (12) is connected to the cutter (11). The second cylinder (12) extends or retracts, thereby driving the cutter (11) to make reciprocating linear motion in the horizontal direction. Then, the blade of the cutter (11) cuts the workpiece (15) adsorbed and gripped by the suction cup assembly (7). The first cylinder (3) retracts, driving the pin shaft (10) to make upward linear motion in the vertical direction. This causes the two mounting plates (8) to rotate and open around the pin shaft (10) respectively, so that all the material in the workpiece (15) falls into the hopper (1).

2. The bag-opening and unloading device for small-bag packaged materials as described in claim 1, characterized in that: The first cylinder (3) is fixed to the top of the rotary cylinder (6). The output end of the rotary cylinder (6) is connected to the cover plate (2). The rotary cylinder (6) drives the cover plate (2) to rotate, thereby driving the two mounting plates (8) to rotate simultaneously, so that the suction cup assembly (7) corresponds to the placement position of the workpiece (15).

3. The bag-opening and unloading device for small-bag packaged materials as described in claim 2, characterized in that: The first cylinder (3) is fixed to the top of the rotary cylinder (6) by a mounting base (5), and the mounting base (5) is connected to the working end of the robotic arm.

4. The bag-opening and unloading device for small-bag packaged materials as described in claim 2, characterized in that: The rotary cylinder (6) has a clearance hole in the middle for the guide rod of the first cylinder (3) to pass through.

5. The bag-opening and unloading device for small-bag packaged materials as described in claim 1, characterized in that: The hinge mechanism (9) has the following structure: it includes a first ear seat (901) fixed to the bottom of the cover plate (2) and a second ear seat (902) fixed to the top of the two mounting plates (8). The two second ear seats (902) are connected to the first ear seat (901) by two connecting rods (903).

6. The bag-opening and unloading device for small-bag packaged materials as described in claim 5, characterized in that: A single link (903) is hinged to the corresponding end of the first lug (901).

7. The bag-opening and unloading device for small-bag packaged materials as described in claim 5, characterized in that: A single link (903) is hinged to the corresponding second lug (902).

8. The bag-opening and unloading device for small-bag packaged materials as described in claim 1, characterized in that: Several pin sleeves (4) are provided on the side wall of a single mounting plate (8) for mounting with the pin shaft (10).

9. The bag-opening and unloading device for small-bag packaged materials as described in claim 1, characterized in that: A guide block (13) is fitted on the outer circumferential surface of the guide rod of the second cylinder (12). A through hole is opened on the end face of the guide block (13), and a guide rod (14) is slidably installed in the through hole. The guide rod of the second cylinder (12) extends or retracts, thereby driving the guide block (13) to reciprocate linearly along the axial direction of the guide rod (14).

10. The bag-opening and unloading device for small-bag packaged materials as described in claim 9, characterized in that: The guide rod (14) is fixed to the inner wall of the hopper (1) or to the cylinder body of the second cylinder (12).

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