Plastic drum facilitating stacking

Abstract

The utility model discloses a plastic drum convenient to stack, including bucket body, butt -joint block, hexagonal recess, hexagonal boss and butt -joint groove, the bucket body top along the circumference even three butt -joint blocks are equipped, and each butt -joint block outer wall is equipped with first ratchets, the bucket body top center opens hexagonal recess, and the bottom center is integrative hexagonal boss, the bucket body bottom along the circumference even three butt -joint grooves are equipped, and butt -joint groove and butt -joint block one to one correspond, and each butt -joint groove inner wall is equipped with second ratchets, the utility model discloses the center positioning cooperation of hexagonal boss and hexagonal recess, combines the circumferential positioning of butt -joint block and butt -joint groove and ratchet meshing structure, forms center with circumferential double fixed, avoids the circumferential deviation and axial slack when stacking, and the meshing design of first ratchet and second ratchet can resist the separating force of upper and lower bucket body, even in the stacking height higher or slightly vibrating scene, still can keep overall stability, reduces the risk of collapse and material leakage.

Description

Technical Field

[0001] This utility model belongs to the field of plastic container technology, specifically relating to a plastic bucket that is easy to stack. Background Technology

[0002] Plastic drums are widely used in chemical, food, warehousing and logistics industries due to their low cost and strong corrosion resistance. They are often stacked to save space during storage and transportation. However, existing stacking designs for plastic drums have significant drawbacks:

[0003] Poor stacking stability: Traditional plastic buckets are mostly round, and lack precise positioning structures at the top and bottom. When stacking, they rely solely on their own weight and the friction of the contact surface to maintain balance. They are prone to tilting and collapsing due to slight collisions, ground vibrations, or increased stacking height. This not only causes material loss but also poses safety hazards (such as chemical liquid leaks or injuries to operators). Furthermore, when round buckets are placed on a flat surface, the gaps between the buckets are relatively large, resulting in wasted space.

[0004] Low positioning efficiency: When stacking, the alignment of the upper and lower barrels needs to be adjusted manually and repeatedly. Especially in batch stacking scenarios, a lot of time is spent calibrating the center and circumferential position of the barrels, which seriously affects the efficiency of warehouse turnover. Although some improvement solutions add simple bosses and grooves, they do not solve the problem of circumferential offset and there is still a risk of stacking misalignment.

[0005] In summary, the current stacking design of plastic drums is insufficient to meet the needs of efficient, stable, and safe warehousing and transportation. There is an urgent need for an optimized solution that can achieve precise positioning, rapid stacking, and adaptability to multiple scenarios. Utility Model Content

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A stackable plastic bucket includes a bucket body, a mating block, a hexagonal groove, a hexagonal boss, and a mating slot;

[0008] Three docking blocks are evenly arranged circumferentially on the top of the barrel, and each docking block has a first inverted tooth on its outer wall.

[0009] The top center of the barrel has a hexagonal groove, and the bottom center has an integrally formed hexagonal boss;

[0010] The bottom of the barrel is uniformly provided with three docking grooves along the circumference, and each docking groove corresponds to a docking block. The inner wall of each docking groove is provided with a second inverted tooth.

[0011] When two plastic buckets are stacked, the hexagonal protrusion of the lower bucket is inserted into the hexagonal groove of the upper bucket, and the connecting block of the lower bucket is inserted into the connecting groove of the upper bucket, with the first and second chamfers meshing; the top of the inner wall of the hexagonal groove and the bottom of the outer wall of the hexagonal protrusion are both chamfered to facilitate the hexagonal protrusion sliding into the hexagonal groove.

[0012] Furthermore, a sealing cap is provided on one side of the top of the barrel, and a cap groove is opened on one side inside the hexagonal boss, with the cap groove and the sealing cap being coaxially aligned.

[0013] Furthermore, at least two reinforcing ribs are arranged around the outside of the barrel body, with uniform spacing between adjacent reinforcing ribs and the cross-section of the reinforcing ribs being an isosceles trapezoid.

[0014] Furthermore, two handle grooves are symmetrically opened on the outer side of the barrel, and the inner wall of the handle groove is wrapped with a rubber anti-slip layer.

[0015] Furthermore, the inclination angle of the first and second reverse teeth is 35-45°, and their tooth heights are the same.

[0016] Furthermore, the depth of the hexagonal groove is consistent with the height of the hexagonal boss, and the gap between the two is minimal, ensuring that the boss can be inserted smoothly without significant wobbling.

[0017] Furthermore, the inner diameter of the cover groove is slightly larger than the outer diameter of the sealing cover, and the depth of the cover groove is slightly larger than the height of the sealing cover, ensuring that the sealing cover can be completely embedded in the cover groove.

[0018] In summary, this utility model has the following beneficial technical effects:

[0019] 1. This utility model uses the center positioning and cooperation of hexagonal boss and hexagonal groove, combined with the circumferential positioning and reverse tooth meshing structure of docking block and docking groove, to form a double fixation of center and circumferential, avoiding circumferential offset and axial loosening during stacking. The meshing design of the first and second reverse teeth can resist the separation force of the upper and lower barrels. Even in scenarios with high stacking height or slight vibration, it can still maintain overall stability, reduce the risk of collapse and material leakage. In addition, the regular hexagonal barrels utilize geometric characteristics to achieve a tight arrangement. Compared with traditional round plastic barrels, it can reduce space waste when placed on the flat surface of the factory or warehouse, and is especially suitable for small and medium-sized warehouse scenarios with limited space.

[0020] 2. The chamfered design of the top of the inner wall of the hexagonal groove and the bottom of the outer wall of the hexagonal protrusion in this utility model allows the protrusion of the lower bucket to automatically slide into the groove of the upper bucket under the action of gravity, without the need for precise manual calibration, realizing "alignment upon placement" for rapid stacking and improving stacking efficiency. Attached Figure Description

[0021] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts.

[0022] in:

[0023] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0024] Figure 2 This is a bottom view structural diagram of this utility model;

[0025] Figure 3 This is a schematic diagram of a three-dimensional stacking of this utility model;

[0026] Figure 4 This is a cross-sectional stacking diagram of this utility model;

[0027] Figure 5 This is a utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0028] Figure 6 This is a utility model Figure 2 Enlarged structural diagram at point B;

[0029] Figure 7 This is a utility model Figure 4 Enlarged structural diagram at point C.

[0030] Figures 1-7 Explanation of reference numerals in the attached drawings: 1. Barrel body; 101. Sealing cap; 102. Reinforcing rib; 103. Handle groove; 2. Connecting block; 201. First inverted tooth; 3. Hexagonal groove; 4. Hexagonal boss; 401. Cap groove; 5. Connecting groove; 501. Second inverted tooth. Detailed Implementation

[0031] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0033] like Figures 1 to 6 As shown, a plastic bucket that is easy to stack includes a bucket body 1, a connecting block 2, a hexagonal groove 3, a hexagonal boss 4, and a connecting slot 5.

[0034] The barrel body 1 is a hollow hexagonal columnar structure, integrally injection molded from high-density polyethylene (HDPE). It possesses characteristics of acid and alkali corrosion resistance and strong impact resistance, making it suitable for storing various materials such as chemical raw materials, food sauces, and agricultural liquids. Each side of the hexagon in barrel body 1 is of equal length. This structural design allows multiple barrel bodies 1 to fit tightly together when placed on a flat surface, forming a honeycomb-like arrangement. A sealing cap 101 is located on one side of the top of barrel body 1. The sealing cap 101 is connected to the feed inlet at the top of barrel body 1 via a spiral thread. During stacking, the sealing cap 101 can enter the cap groove 401, ensuring that no protrusions or interference occur during stacking.

[0035] The mating blocks 2 are distributed at intervals along the six sides of the top edge of the barrel 1, at the midpoints of three non-adjacent sides (i.e., three are evenly distributed circumferentially). The mating blocks 2 and the barrel 1 are integrally injection molded, forming a rectangular convex shape, with their length direction coinciding with the centerline of the side they are located on (i.e., extending radially along the barrel 1). Each mating block 2 has a first inverted tooth 201 on its outer wall. The first inverted teeth 201 are evenly spaced along the height direction of the mating block 2, with an inclination angle of 35° and rounded tips to avoid rigid collisions during insertion.

[0036] A hexagonal groove 3 is located at the top center of the barrel body 1, forming a regular hexagonal cavity structure. Its side length is equal to the inner side length of the side wall of the barrel body 1. The top edge of the inner wall of the hexagonal groove 3 is chamfered to guide the smooth insertion of the boss. A hexagonal boss 4 is integrally formed at the bottom center of the barrel body 1, forming a regular hexagonal protrusion structure. Its side length and height are perfectly matched with the side length and depth of the hexagonal groove 3, respectively. The bottom edge of the outer wall of the hexagonal boss 4 is also chamfered to form a guide with the chamfer of the groove. A cover groove 401 is provided on one side of the inner wall of the hexagonal boss 4 (corresponding to the position of the sealing cover 101). The cover groove 401 is a circular cavity, coaxially aligned with the sealing cover 101. Its inner diameter is 2-3 mm larger than the outer diameter of the sealing cover 101, and its depth is 1-2 mm larger than the height of the sealing cover 101, ensuring that the sealing cover 101 can be completely embedded in the cover groove 401 when stacking, avoiding structural interference.

[0037] The docking groove 5 is located at the midpoint of three of the six sides along the bottom edge of the barrel 1 that correspond to the top docking block 2 (i.e., one-to-one correspondence with the docking block 2). The docking groove 5 is a cuboid groove structure, and its length, width, and depth are perfectly matched with the length, width, and height of the docking block 2, respectively. The groove opening edge is also rounded. The inner wall of each docking groove 5 is provided with a second inverted tooth 501. The arrangement density and inclination angle of the second inverted tooth 501 are completely consistent with the first inverted tooth 201, and the tooth surface orientation is complementary to the first inverted tooth 201, ensuring that the two can tightly mesh when the docking block 2 is inserted, forming an axial lock.

[0038] The outer perimeter of the barrel 1 is surrounded by reinforcing ribs 102, which can significantly improve the compressive strength of the barrel 1 and make it less prone to deformation when stacked in multiple layers. Two handle grooves 103 are symmetrically opened in the middle of the outer side wall of the barrel 1. The handle grooves 103 are arc-shaped grooves with rounded edges. The inner wall is covered with a rubber anti-slip layer with diamond-shaped anti-slip texture on the surface of the rubber layer, which not only facilitates gripping during manual handling but also prevents hand slippage.

[0039] The working process of this embodiment is as follows: When plastic barrels need to be placed flat in a factory or warehouse, the hexagonal structure of barrel 1 is used to fit the sides of multiple plastic barrels together to form a honeycomb arrangement. The sides of three adjacent barrels 1 can form a tight triangular support structure. Compared with the gap between traditional circular barrels 1, the gap ratio of this design is effectively reduced, and more barrels 1 can be placed in the same factory area, greatly improving the space utilization rate.

[0040] When stacking is required, first place the bottom layer of plastic buckets in a honeycomb pattern on a flat surface, ensuring that the bottom surface of each bucket 1 is in full contact with the ground to prevent shaking. Then, lift the upper layer of plastic buckets or raise them manually, aligning the hexagonal protrusions 4 on the bottom of the upper layer buckets with the hexagonal grooves 3 on the top of the lower layer buckets, and simultaneously aligning the mating grooves 5 of the upper layer buckets with the mating blocks 2 of the lower layer buckets. Due to the symmetry of the hexagonal structure, even if there is a slight deviation from the center during batch stacking, the position can be quickly corrected by the guiding action of the sides.

[0041] Under the influence of gravity, the bottom chamfer of the hexagonal boss 4 of the upper bucket contacts the top chamfer of the hexagonal groove 3 of the lower bucket. Guided by the inclined plane, the boss automatically slides into the groove, achieving center positioning. At this time, the docking block 2 of the lower bucket is simultaneously inserted into the docking groove 5 of the upper bucket. The first chamfer 201 and the second chamfer 501 mesh with each other to form a circumferential lock, preventing relative rotation or lateral displacement of the upper and lower buckets 1. When the bottom plane of the upper bucket is completely attached to the top plane of the lower bucket, the stacking is completed. At this time, the sealing cap 101 of the lower bucket is precisely embedded in the cap groove 401 of the upper bucket without any structural interference, and the upper and lower buckets 1 form an integral load-bearing structure.

[0042] If multiple layers of stacking are required, repeat the above steps. Due to the reinforcing effect of the reinforcing rib 102, the side wall of the barrel 1 can withstand the gravity pressure of the upper stack, and the cooperation between the hexagonal groove 3 and the hexagonal boss 4 makes the force evenly distributed to the top of the entire barrel 1, avoiding excessive local stress that could lead to deformation.

[0043] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0044] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0045] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0046] 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. A plastic bucket that is easy to stack, characterized in that, It includes a barrel body (1), a docking block (2), a hexagonal groove (3), a hexagonal boss (4), and a docking slot (5); The top of the barrel (1) is evenly provided with three docking blocks (2) along the circumference, and the outer wall of each docking block (2) is provided with a first inverted tooth (201); The barrel body (1) has a hexagonal groove (3) at the top center and a hexagonal boss (4) integrally formed at the bottom center; The bottom of the barrel (1) is evenly provided with three docking grooves (5) along the circumference. The docking grooves (5) correspond one-to-one with the docking blocks (2). The inner wall of each docking groove (5) is provided with a second inverted tooth (501). When the two plastic buckets are stacked, the hexagonal protrusion (4) of the lower bucket is inserted into the hexagonal groove (3) of the upper bucket, and the docking block (2) of the lower bucket is inserted into the docking groove (5) of the upper bucket. The first chamfer (201) and the second chamfer (501) are engaged. The top of the inner wall of the hexagonal groove (3) and the bottom of the outer wall of the hexagonal protrusion (4) are both chamfered so that the hexagonal protrusion (4) can slide into the hexagonal groove (3).

2. The stackable plastic bucket according to claim 1, characterized in that: A sealing cap (101) is provided on one side of the top of the barrel body (1), and a cover groove (401) is opened on one side of the interior of the hexagonal boss (4). The cover groove (401) is coaxially aligned with the sealing cap (101).

3. The stackable plastic bucket according to claim 1, characterized in that: The barrel body (1) is surrounded by at least two reinforcing ribs (102), the spacing between adjacent reinforcing ribs (102) is uniform, and the cross section of the reinforcing ribs (102) is an isosceles trapezoid.

4. The stackable plastic bucket according to claim 1, characterized in that: The barrel body (1) has two symmetrical handle grooves (103) on the outside, and the inner wall of the handle grooves (103) is wrapped with a rubber anti-slip layer.

5. The stackable plastic bucket according to claim 1, characterized in that: The first reverse tooth (201) and the second reverse tooth (501) have an inclination angle of 30-45°, and their tooth heights are the same.

6. The stackable plastic bucket according to claim 1, characterized in that: The depth of the hexagonal groove (3) is consistent with the height of the hexagonal boss (4), and the gap between the two is small, ensuring that the boss can be inserted smoothly without obvious shaking.

7. The stackable plastic bucket according to claim 2, characterized in that: The inner diameter of the cover groove (401) is slightly larger than the outer diameter of the sealing cover (101), and the depth of the cover groove (401) is slightly larger than the height of the sealing cover (101), ensuring that the sealing cover (101) can be fully embedded in the cover groove (401).

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