Plastic bucket stacking machine for processing and stacking method thereof

Abstract

The invention discloses a plastic barrel stacking machine for machining and a stacking method thereof, and relates to the field of stacking machines, the plastic barrel stacking machine comprises a mechanical arm, a fixing plate is arranged at the end of the mechanical arm, a driving assembly is arranged at the top of the fixing plate, and a first clamping plate and a second clamping plate are movably mounted at the bottom of the fixing plate; sliding blocks are fixed to the tops of the first clamping plate and the second clamping plate correspondingly, a first lead screw and a second lead screw are movably installed in the fixing plate, and a first bevel gear is fixed to the outer wall of the first lead screw. By means of the first clamping plates and the second clamping plates, a round barrel can be clamped more stably, the multiple sets of first clamping plates are located on the outer side of a barrel opening to clamp the barrel opening, the multiple sets of second clamping plates are located on the inner side of the barrel opening, and meanwhile the purpose of clamping the barrel opening is achieved, so that the barrel opening cannot fall off when being transferred to the position above a tray; and the clamping effect on the drum is better and more stable.

Description

Technical Field

[0001] This invention relates to the field of stacker cranes, specifically to a plastic bucket stacker crane and its stacking method for processing. Background Technology

[0002] Plastic buckets are widely used in various fields due to their durability, lightness, and strong adaptability. The most common applications are storage and transportation. The shape and specifications of plastic buckets are produced according to the user's needs. After production, plastic buckets need to be stacked on pallets for transportation, which requires the use of stacker cranes.

[0003] Existing stacker cranes use cylinders to drive the clamping structure to hold plastic drums. For irregularly shaped drums with handles, they can be stacked by clamping the handles. However, for round drums, they can only be held by clamping. But when using existing cylinders to drive the clamping plates to hold round drums, the drums themselves have weight, and the external clamping can cause the clamping to become loose during transportation. This can lead to the drums falling off. Excessive clamping can also cause the drums to deform, making them unqualified. The deformed drums need to be manually repaired, which is quite troublesome. Summary of the Invention

[0004] Based on this, the purpose of the present invention is to provide a plastic bucket stacker and stacking method for processing, so as to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a plastic bucket stacker for processing and a stacking method thereof, comprising a robotic arm, a fixed plate at the end of the robotic arm, a drive assembly at the top of the fixed plate, a first clamping plate and a second clamping plate movably mounted at the bottom of the fixed plate, and sliders fixed at the top of both the first clamping plate and the second clamping plate, a first lead screw and a second lead screw movably mounted inside the fixed plate, a first bevel gear fixed to the outer wall of the first lead screw, a second bevel gear fixed to the end of the second lead screw, the output end of the drive assembly being connected to the first lead screw via a transmission assembly, a limit block movably mounted at the bottom of the second clamping plate, a pressing rod fixed to one side of the limit block, and rotating rods fixed to both sides of the limit block.

[0006] By adopting the above technical solution, the first and second clamping plates can be set to make the cylindrical barrel more stable when clamping it. Multiple sets of first clamping plates are located on the outside of the barrel opening to clamp it, and multiple sets of second clamping plates are located on the inside of the barrel opening to achieve the purpose of clamping the barrel opening at the same time, so that it will not fall off when it is transferred to the top of the pallet. The clamping effect of the cylindrical barrel is better and more stable.

[0007] The present invention is further configured such that the outer walls of the first clamping plate, the second clamping plate, and the limiting block are all provided with rubber pads.

[0008] Preferably, the rubber pads not only increase the friction between the first clamping plate, the second clamping plate, and the limiting block and the inner wall of the barrel, but also protect the inside and outside of the barrel opening.

[0009] The present invention is further configured such that a groove is provided at the bottom of the fixing plate, and the inner wall of the groove is in contact with the outer wall of the slider.

[0010] Preferably, the groove can cooperate with the slider to limit the direction of movement of the slider.

[0011] The present invention is further configured such that the transmission assembly includes a first synchronous pulley, a synchronous belt, and a second synchronous pulley; the output end of the drive assembly is equipped with the first synchronous pulley; the outer wall of the first lead screw is fixed with the second synchronous pulley; and the outer walls of the second synchronous pulley and the first synchronous pulley are fitted with synchronous belts.

[0012] Preferably, when the motor operates via the transmission assembly, it drives the first synchronous pulley to rotate. When the first synchronous pulley rotates, it drives the second synchronous pulley to rotate via the synchronous belt. When the second synchronous pulley rotates, it drives the first lead screw to rotate.

[0013] The present invention is further configured such that a groove is provided at the bottom of the fixing plate, and a through hole is provided inside the fixing plate.

[0014] Preferably, the groove allows the first and second bevel gears to rotate easily on their inner walls, avoiding contact with the fixed plate, and the through hole allows the timing belt to rotate easily inside without contacting the fixed plate.

[0015] The present invention is further configured such that a rotating groove is provided inside the second clamping plate, and one side of both the first clamping plate and the second clamping plate is arc-shaped.

[0016] Preferably, the slotted groove allows the extrusion rod to rotate inside, and the arc-shaped design on one side of both the first and second clamping plates facilitates contact with the inner and outer walls of the barrel opening, increasing the contact area and thus improving the clamping effect.

[0017] The present invention is further configured such that the extrusion rod is inclined and the end of the extrusion rod is arc-shaped.

[0018] Preferably, the arc-shaped end of the extrusion rod can reduce the friction when it contacts the inner wall of the cylinder, thereby driving the limiting block to rotate when it contacts the inner wall of the cylinder.

[0019] The present invention is further configured such that the length of the first clamping plate is shorter than the length of the second clamping plate, and the number of the first clamping plate and the second clamping plate is multiple sets.

[0020] Preferably, the first clamping plate does not contact the outer inclined surface of the barrel, while the second clamping plate enters the interior of the barrel, allowing the limiting block to contact the inclined surface of the inner wall of the barrel. Multiple clamping plates can increase friction, thereby improving the clamping effect and preventing the barrel from falling during transport.

[0021] A stacking method for plastic drums using a stacker crane, the process of which includes the following steps: S1. When in use, the robotic arm drives the fixed plate to rotate, rotating it to the top of the drum conveyor line. Then, the robotic arm drives the fixed plate to move downward, so that the second clamping plate enters the inside of the drum, while the first clamping plate is located on the outside of the drum. S2. Then the robotic arm stops working, the motor drives the first synchronous pulley to rotate, and drives the first lead screw and the second lead screw to rotate through the synchronous belt. According to the lead screw principle, the first clamping plate and the second clamping plate will move, and the first clamping plate and the second clamping plate will move closer to each other to clamp the mouth of the barrel. S3. When the second clamping plate approaches the inner wall of the cylinder, the inner wall of the cylinder will contact the extrusion rod. Since the end of the extrusion rod is arc-shaped, the extrusion rod will be squeezed and rotated. The extrusion rod will drive the limiting block fixedly connected to it to rotate. The limiting block rotates around the rotating rod until the limiting block is in contact with the inclined surface at the top of the inner wall of the cylinder. S4. Then the robotic arm moves the fixed plate to transfer the barrel from the conveyor line to the top of the pallet. Then the motor reverses and moves the first clamping plate and the second clamping plate away from the barrel opening, and the limit block resets.

[0022] In summary, the present invention has the following main beneficial effects: 1. This invention, by setting a fixing plate, a first clamping plate, a second clamping plate, a limiting block, and a pressing rod, can more stably clamp a round barrel when it is clamped. Multiple sets of first clamping plates are located on the outside of the barrel opening to clamp it, and multiple sets of second clamping plates are located on the inside of the barrel opening to clamp the barrel opening at the same time, so that it will not fall when it is transferred to the top of the pallet. The clamping effect of the round barrel is better and more stable. 2. This invention, by setting a limiting block and a pressing rod, can contact the inner wall of the cylinder, thereby further preventing the cylinder from falling during transportation. When the second clamping plate approaches the inner wall of the cylinder, the inner wall of the cylinder contacts the end of the pressing rod, which allows the pressing rod to drive the limiting block to rotate. The rotating limiting block contacts the inclined surface at the top of the inner wall of the cylinder, thus preventing the cylinder from falling during transportation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure in this invention; Figure 2 This is a schematic diagram of the bottom structure of the fixing plate in this invention; Figure 3 This is a schematic diagram showing the connection between the first lead screw and the second clamping plate in this invention; Figure 4 This is a schematic diagram of the operation of the first clamping plate and the second clamping plate in this invention; Figure 5 This is a side view of the first clamping plate in this invention; Figure 6 This is a perspective view of the second clamping plate in this invention; Figure 7 This is a perspective view of the first clamping plate in this invention; Figure 8 This is a perspective view of the limiting block in this invention; Figure 9 This is a schematic diagram of the connection between the roller and the extrusion rod in this invention.

[0024] Explanation of reference numerals in the attached figures: 1. Robotic arm; 2. Fixed plate; 21. Slide groove; 22. Groove; 23. Through hole; 3. Motor; 31. First synchronous pulley; 32. Synchronous belt; 4. First clamping plate; 5. Second clamping plate; 51. Rotary groove; 6. Limiting block; 61. Pressing rod; 62. Rotating rod; 63. Roller; 7. Rubber pad; 8. First lead screw; 81. First bevel gear; 82. Second synchronous pulley; 9. Second lead screw; 91. Second bevel gear; 10. Slider. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0026] The embodiments of the present invention will now be described.

[0027] Example 1: A plastic bucket stacker for processing and its stacking method, please refer to [link / reference]. Figure 1 - Figure 8The system includes a robotic arm 1, with a fixed plate 2 at its end. A drive assembly, specifically a motor 3, is mounted on the top of the fixed plate 2. A first clamping plate 4 and a second clamping plate 5 are movably mounted on the bottom of the fixed plate 2, and sliders 10 are fixed to the top of both clamping plates 4 and 5. A first lead screw 8 and a second lead screw 9 are movably mounted inside the fixed plate 2. The outer walls of the first and second lead screws 8 and 9 are provided with positive and negative threads. The first and second lead screws 8 and 9 are threadedly connected to the first clamping plate 4 and the second clamping plate 5. A first bevel gear 81 is fixed to the outer wall of the first lead screw 8, meshing with a second bevel gear 91. A second bevel gear 91 is fixed to the end of the second lead screw 9. The output end of the drive assembly is connected to the first lead screw 8 via a transmission assembly. When the motor 3 operates, it drives the first synchronous pulley 31 to rotate. The rotation of the first synchronous pulley 31 drives the second synchronous pulley 82 to rotate via a synchronous belt 32. The rotation of the second synchronous pulley 82 then drives... When the first lead screw 8 rotates, it drives the first bevel gear 81 to rotate. When the first bevel gear 81 rotates, it drives the second bevel gear 91 to rotate. The rotating second bevel gear 92 drives the second lead screw 9 to rotate. According to the lead screw principle, when the first lead screw 8 and the second lead screw 9 rotate simultaneously, the slider 10 will slide on the inner wall of the groove 21. The first clamping plate 4 and the second clamping plate 5, which are fixedly connected to the slider 10, will move closer to each other. The first clamping plate 4 will contact the outer wall of the barrel opening, and the second clamping plate 5 will contact the inner wall of the barrel opening. The bottom of the second clamping plate 5 is movably installed with a limiting block 6, and a pressing rod 61 is fixed on one side of the limiting block 6. Rotating rods 62 are fixed on both sides of the limiting block 6. The inner wall of the barrel will contact the pressing rod 61. Since the end of the pressing rod 61 is arc-shaped, the pressing rod 61 will be squeezed and rotated. The pressing rod 61 will drive the limiting block 6, which is fixedly connected to it, to rotate. The limiting block 6 rotates around the rotating rod 62 until the limiting block 6 is in contact with the inclined surface at the top of the inner wall of the barrel.

[0028] Please see Figures 6-8 The outer walls of the first clamping plate 4, the second clamping plate 5, and the limiting block 6 are all equipped with rubber pads 7. The rubber pads 7 not only increase the friction between the first clamping plate 4, the second clamping plate 5, and the limiting block 6 and the inner wall of the barrel, but also protect the inside and outside of the barrel opening.

[0029] Please see Figure 2 The bottom of the fixed plate 2 is provided with a sliding groove 21, and the inner wall of the sliding groove 21 is in contact with the outer wall of the slider 10. The sliding groove 21 can cooperate with the slider 10 to limit the movement direction of the slider 10.

[0030] Please see Figures 1-3The transmission assembly includes a first synchronous pulley 31, a synchronous belt 32, and a second synchronous pulley 82. The output end of the drive assembly is equipped with the first synchronous pulley 31, and the outer wall of the first lead screw 8 is fixed with the second synchronous pulley 82. The outer walls of the second synchronous pulley 82 and the first synchronous pulley 31 are fitted with the synchronous belt 32. When the motor 3 of the transmission assembly is working, it will drive the first synchronous pulley 31 to rotate. When the first synchronous pulley 31 rotates, it will drive the second synchronous pulley 82 to rotate through the synchronous belt 32. When the second synchronous pulley 82 rotates, it will drive the first lead screw 8 to rotate.

[0031] Please see Figure 2 The bottom of the fixing plate 2 is provided with a groove 22, and the inside of the fixing plate 2 is provided with a through hole 23. The groove 22 allows the first bevel gear 81 and the second bevel gear 91 to rotate on its inner wall, avoiding contact with the fixing plate 2. The through hole 23 allows the synchronous belt 32 to rotate inside it without contacting the fixing plate 2.

[0032] Please see Figure 3 and Figure 6 The second clamping plate 5 has a rotating groove 51 inside. One side of the first clamping plate 4 and the second clamping plate 5 are both arc-shaped. The rotating groove 51 allows the extrusion rod 61 to rotate inside it. The arc shape of one side of the first clamping plate 4 and the second clamping plate 5 allows them to easily contact the inner and outer walls of the barrel opening, increasing the contact area and thus making the clamping effect better.

[0033] Please see Figure 6 The extrusion rod 61 is inclined and the end of the extrusion rod 61 is arc-shaped. The arc-shaped end of the extrusion rod 61 can reduce the friction when it contacts the inner wall of the cylinder, so that it can drive the limit block 6 to rotate when it contacts the inner wall of the cylinder.

[0034] Please see Figure 5 The length of the first clamping plate 4 is shorter than the length of the second clamping plate 5, and there are multiple sets of the first clamping plate 4 and the second clamping plate 5. The first clamping plate 4 will not contact the outer wall slope of the barrel, while the second clamping plate 5 can enter the interior of the barrel, allowing the limiting block 6 to contact the inner wall slope of the barrel. The multiple sets can increase the friction, thereby making the clamping effect better and preventing the barrel from falling off during transportation.

[0035] Example 2: Please refer to Figure 9 The end of the extrusion rod 61 is equipped with a roller 63. When the second clamping plate 5 moves, the roller 63 contacts the inner wall of the barrel. The roller 63 can prevent the extrusion rod 61 from contacting the barrel, thereby reducing the friction between the extrusion rod 61 and the barrel.

[0036] 9. A stacking method for a plastic drum stacker, characterized in that it uses any one of claims 1-8, and the process includes the following steps: S1. When in use, the robotic arm 1 drives the fixed plate 2 to rotate, rotate to the top of the barrel conveyor line, and then the robotic arm 1 drives the fixed plate 2 to move downward, so that the second clamping plate 5 enters the inside of the barrel, and the first clamping plate 4 is located outside the barrel. S2. Then the robotic arm 1 stops working, the motor 3 works to drive the first synchronous wheel 31 to rotate, and drives the first lead screw 8 and the second lead screw 9 to rotate through the synchronous belt 32. According to the lead screw principle, it will drive the first clamping plate 4 and the second clamping plate 5 to move. The first clamping plate 4 and the second clamping plate 5 move closer to each other and clamp the mouth of the barrel. S3. When the second clamping plate 5 approaches the inner wall of the barrel, the inner wall of the barrel will contact the extrusion rod 61. Since the end of the extrusion rod 61 is arc-shaped, the extrusion rod 61 will be squeezed and rotated. The extrusion rod 61 will drive the limiting block 6 fixedly connected to it to rotate. The limiting block 6 rotates around the rotating rod 62 as the center until the limiting block 6 is in contact with the inclined surface at the top of the inner wall of the barrel. S4. Then the robotic arm 1 moves the fixed plate 2 to transfer the barrel from the conveyor line to the top of the pallet. Then the motor 3 reverses and moves the first clamping plate 4 and the second clamping plate 5 away from the barrel opening, and the limit block 6 resets.

[0037] The working principle of this invention is as follows: During use, the produced drums are transported via a conveyor line. When the drums reach the robotic arm 1, the robotic arm 1 moves the fixing plate 2 closer to the opening of the drum. The fixing plate 2 then sits above the opening of the drum. The first clamping plate is positioned on the outer wall of the drum opening, and the second clamping plate 5 enters the inner wall of the drum. Immediately afterwards, the motor 3 operates, driving the first synchronous pulley 31 to rotate. The rotation of the first synchronous pulley 31 drives the second synchronous pulley 82 to rotate via the synchronous belt 32. The rotation of the second synchronous pulley 82 drives the first lead screw 8 to rotate. The rotation of the first lead screw 8 drives the first bevel gear 81 to rotate. The rotation of the first bevel gear 81 drives the second bevel gear 91 to rotate. The rotating second bevel gear 92 drives the second lead screw 9 to rotate. Based on the lead screw principle... When the first lead screw 8 and the second lead screw 9 rotate simultaneously, the slider 10 will slide on the inner wall of the groove 21. The first clamping plate 4 and the second clamping plate 5, which are fixedly connected to the slider 10, will approach each other. The first clamping plate 4 will contact the outer wall of the barrel opening, and the second clamping plate 5 will contact the inner wall of the barrel opening. When the second clamping plate 5 approaches the barrel, the inner wall of the barrel will contact the extrusion rod 61. Since the end of the extrusion rod 61 is arc-shaped, the extrusion rod 61 will be squeezed and rotated. The extrusion rod 61 will drive the limiting block 6, which is fixedly connected to it, to rotate. The limiting block 6 rotates around the rotating rod 62 as the center until the limiting block 6 is in contact with the inclined surface at the top of the inner wall of the barrel. The limiting block 6 further limits the barrel. Then the robotic arm drives the fixed plate 2 to move, moving the barrel to the top of the tray. After the barrel is placed on the tray, Motor 3 reverses, thereby driving the first lead screw 8 and the second lead screw 9 to reverse, causing the first clamping plate 4 and the second clamping plate 5 to separate. When the second clamping plate 5 moves away from the inner wall of the barrel opening, the squeezing rod 61 gradually moves away from the inner wall of the barrel opening, and the limiting block 6 will reset under the action of gravity. Without the need for a spring, the limiting block 6 can be in a vertical state according to its own weight, and the fixing plate 2 moves upward. Repeat the above steps to stack the plastic barrels.

[0038] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A plastic bucket stacker for processing, comprising a robotic arm (1), characterized in that: The end of the robotic arm (1) is provided with a fixed plate (2), and the top of the fixed plate (2) is provided with a drive assembly. The bottom of the fixed plate (2) is movably installed with a first clamping plate (4) and a second clamping plate (5), and the top of the first clamping plate (4) and the second clamping plate (5) are both fixed with sliders (10). The inside of the fixed plate (2) is movably installed with a first lead screw (8) and a second lead screw (9), and the outer wall of the first lead screw (8) is fixed with a first bevel gear (81). The end of the second lead screw (9) is fixed with a second bevel gear (91). The output end of the drive assembly is connected to the first lead screw (8) through a transmission assembly. The bottom of the second clamping plate (5) is movably installed with a limit block (6), and a pressing rod (61) is fixed on one side of the limit block (6), and rotating rods (62) are fixed on both sides of the limit block (6).

2. The plastic bucket stacker for processing according to claim 1, characterized in that: The outer walls of the first clamping plate (4), the second clamping plate (5) and the limiting block (6) are all provided with rubber pads (7).

3. A plastic bucket stacker for processing according to claim 1, characterized in that: The bottom of the fixing plate (2) is provided with a groove (21), and the inner wall of the groove (21) is in contact with the outer wall of the slider (10).

4. A plastic drum stacker for processing according to claim 1, characterized in that: The transmission assembly includes a first synchronous pulley (31), a synchronous belt (32), and a second synchronous pulley (82). The output end of the drive assembly is equipped with the first synchronous pulley (31), and the outer wall of the first lead screw (8) is fixed with the second synchronous pulley (82). The outer walls of the second synchronous pulley (82) and the first synchronous pulley (31) are fitted with a synchronous belt (32).

5. A plastic drum stacker for processing according to claim 1, characterized in that: The bottom of the fixing plate (2) is provided with a groove (22), and the interior of the fixing plate (2) is provided with a through hole (23).

6. A plastic drum stacker for processing according to claim 1, characterized in that: The second clamping plate (5) has a rotating groove (51) inside, and one side of the first clamping plate (4) and the second clamping plate (5) are both arc-shaped.

7. A plastic bucket stacker for processing according to claim 1, characterized in that: The extrusion rod (61) is inclined and the end of the extrusion rod (61) is arc-shaped.

8. A plastic drum stacker for processing according to claim 1, characterized in that: The length of the first clamping plate (4) is shorter than the length of the second clamping plate (5), and there are multiple sets of the first clamping plate (4) and the second clamping plate (5).

9. A stacking method for a plastic bucket stacker, characterized in that... The process of using the plastic drum stacker according to any one of claims 1-8 includes the following steps: S1. When in use, the robotic arm (1) drives the fixed plate (2) to rotate to the top of the barrel conveyor line. Then the robotic arm (1) drives the fixed plate (2) to move downward, so that the second clamping plate (5) enters the inside of the barrel and the first clamping plate (4) is located outside the barrel. S2. Then the robotic arm (1) stops working, the motor (3) drives the first synchronous wheel (31) to rotate, and drives the first lead screw (8) and the second lead screw (9) to rotate through the synchronous belt (32). According to the lead screw principle, it will drive the first clamping plate (4) and the second clamping plate (5) to move. The first clamping plate (4) and the second clamping plate (5) move closer to each other and clamp the mouth of the barrel. S3. When the second clamping plate (5) approaches the inner wall of the barrel, the inner wall of the barrel will contact the extrusion rod (61). Since the end of the extrusion rod (61) is arc-shaped, the extrusion rod (61) will be squeezed and rotated. The extrusion rod (61) will drive the limiting block (6) fixedly connected to it to rotate. The limiting block (6) rotates around the rotating rod (62) until the limiting block (6) is in contact with the inclined surface at the top of the inner wall of the barrel. S4. Then the robotic arm (1) moves the fixed plate (2) to transfer the barrel from the conveyor line to the top of the pallet. Then the motor (3) reverses and drives the first clamping plate (4) and the second clamping plate (5) away from the barrel opening, and the limit block (6) resets.

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