A turnover box palletizer and palletizing method thereof

Abstract

The present invention discloses a turnover box palletizer, including a frame, a conveying mechanism, a pair of clamping mechanisms and a pair of openable guardrail mechanisms are arranged on the frame, the conveying mechanism includes two conveying tracks, a lifting mechanism is arranged between the two rows of conveying tracks, a pair of clamping mechanisms are arranged above the two rows of conveying tracks, and a pair of guardrail mechanisms are arranged at the discharge ends of the two rows of conveying tracks. The palletizing method includes the following steps: S1, the two rows of conveying tracks convey the turnover box to the top of the lifting mechanism; S2, the lifting mechanism drives the turnover box to rise by one box position, the clamping mechanism clamps the current bottom layer of the turnover box, and then the lifting mechanism resets; S3, repeating steps S1 and S2 until the palletizing of the target number of turnover boxes is completed; S4, the lifting mechanism rises to undertake the stacking material, the clamping mechanism releases the stacking material, the lifting mechanism descends to drive the stacking material to fall onto the conveying track, the guardrail mechanism opens, and the conveying track outputs the stacking material. The present invention has the advantages of simple structure, reliability, low cost, high efficiency, etc.

Description

Technical Field

[0001] The invention relates to logistics mechanical equipment and a use method thereof, and in particular to a turnover box palletizer and a palletizing method thereof. Background Art

[0002] Turnover boxes (mainly plastic turnover boxes) are important tools in the logistics industry. After the manufacturing industry implemented the lean logistics management model, it was required that parts be directly and accurately supplied to the final assembly line, which needed to fully cooperate with the time, beat, quantity, etc. of the final assembly plant. The processing and assembly lines in the manufacturing industry require tens of thousands or even hundreds of thousands of turnover boxes every day, which poses a huge challenge to the entry and exit procedures of the turnover boxes.

[0003] If the traditional manual operation is adopted, workers will repeat mechanical operations for 3 to 15 seconds during palletizing or handling, which is very labor-intensive, the efficiency will continue to decline, the labor cost is high, and there is also the risk of labor operation in Shanghai. Therefore, logistics system equipment with a high degree of automation has become the first choice for enterprises, but the existing turnover box palletizing manipulator basically takes about 20 seconds to complete a palletizing, which is inefficient, complex in structure, and high in maintenance cost. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a turnover box palletizer with a simple structure, reliability and high efficiency.

[0005] The present invention further provides a palletizing method for the above-mentioned turnover box palletizer.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A turnover box palletizer comprises a frame, on which a conveying mechanism, a pair of clamping mechanisms and a pair of openable and closable guardrail mechanisms are provided, the conveying mechanism comprises two conveying tracks, a lifting mechanism for driving the turnover boxes on the conveying tracks to rise and fall is provided between the two rows of conveying tracks, the pair of clamping mechanisms are respectively arranged above the two rows of conveying tracks, and the pair of guardrail mechanisms are respectively arranged at the discharge ends of the two rows of conveying tracks.

[0008] As a further improvement of the above technical solution: the clamping mechanism includes a clamping shaft arranged parallel to the conveying track and a clamping drive assembly for driving the clamping shaft to rotate, and the clamping shaft is provided with a plurality of ratchet blocks that can rotate upward in one direction, and each ratchet block is equipped with a torsion spring for resetting.

[0009] As a further improvement of the above technical solution: the clamping drive assembly includes a first driving cylinder, a V-shaped connecting rod and a first swing arm connecting rod, the V-shaped connecting rod is rotatably arranged on the frame, the piston rod of the first driving cylinder is hinged to one end of the V-shaped connecting rod, the other end of the V-shaped connecting rod is hinged to one end of the first swing arm connecting rod, and the other end of the first swing arm connecting rod is fixedly connected to the clamping shaft.

[0010] As a further improvement of the above technical solution: the guardrail mechanism includes a guardrail rotating shaft arranged vertically and a guardrail arranged on the inner side of the guardrail rotating shaft, a guardrail driving assembly for driving the two guardrails to open and close is provided between the two guardrail rotating shafts, the guardrail driving assembly includes a second driving cylinder, a second swing arm connecting rod, a synchronous connecting rod and two third swing arm connecting rods, the piston rod of the second driving cylinder is hinged to one end of the second swing arm connecting rod, the other end of the second swing arm connecting rod is fixed on one of the guardrail rotating shafts, the two third swing arm connecting rods are respectively fixed on the two guardrail rotating shafts, and the two ends of the synchronous connecting rod are respectively hinged to the two third swing arm connecting rods.

[0011] As a further improvement of the above technical solution: the conveying track includes a pallet chain and a chain friction plate arranged below the pallet chain.

[0012] As a further improvement of the above technical solution: a transition roller is provided at the exit end of the conveying track.

[0013] As a further improvement of the above technical solution: the jacking mechanism includes a top plate, and both ends of the top plate are provided with a jacking cylinder assembly and a guide assembly, the jacking cylinder assembly includes two jacking cylinders with different strokes, the guide assembly includes a jacking guide rod and a linear bearing sleeved on the outer periphery of the jacking guide rod, the jacking guide rod is arranged on the top plate, and the linear bearing is arranged on the frame.

[0014] As a further improvement of the above technical solution: a horizontal guide member and a side vertical guide member are provided above the conveying track, and an end face vertical guide member is provided at the entrance end of the conveying track.

[0015] A palletizing method for the above-mentioned turnover box palletizer comprises the following steps:

[0016] S1, two rows of conveyor tracks convey the turnover boxes to the top of the lifting mechanism;

[0017] S2, lifting and stacking: the lifting mechanism drives the turnover box to rise one box position, the clamping mechanism clamps the turnover box at the bottom layer, and then the lifting mechanism resets;

[0018] S3, continuous palletizing: repeat steps S1 and S2 until the target number of turnover boxes are palletized;

[0019] S4. Stack material output: the lifting mechanism rises to receive the stack material, the clamping mechanism releases the stack material, the lifting mechanism descends to drive the stack material onto the conveying track, the guardrail mechanism opens, and the conveying track outputs the stack material.

[0020] Compared with the prior art, the advantages of the present invention are: the turnover box palletizer disclosed in the present invention has two rows of conveying tracks on the frame, a lifting mechanism is arranged between the two rows of conveying tracks, and a clamping mechanism is arranged above the conveying tracks. After the turnover box is transported to the right position, it can be lifted upward to between the clamping mechanisms, and the current bottom turnover box is clamped and fixed by the clamping mechanism, and then the lifting mechanism is lowered and reset, and the subsequent cycle action can realize palletizing. During the palletizing process, a pair of guardrail mechanisms provide protection and guidance for the end faces of the turnover boxes to ensure neat palletizing. After palletizing to a set number, the lifting mechanism rises to receive the turnover box stacking material, the clamping mechanism is released, the lifting mechanism descends to transfer the stacking material to the conveying track, the pair of guardrail mechanisms are opened, and the conveying track outputs the stacking material from between the pair of guardrail mechanisms. The structure is simple and reliable, the cost is low, it is easy to maintain, and the palletizing speed is fast, which realizes the effective connection between the single conveying pre-process and the whole stacking conveying post-process in the logistics system.

[0021] The present invention discloses a palletizing method for a turnover box palletizer. The conveyor track continuously conveys the turnover boxes to the positions. The lifting mechanism only needs to rise one box position each time and cooperates with the clamping mechanism to complete continuous palletizing. After palletizing is completed, the lifting mechanism is used to transfer the stacking materials to the conveyor track again. The steps are simple, the movements are smooth and the efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the turnover box palletizer of the present invention.

[0023] Figure 2 It is a three-dimensional structural schematic diagram of the clamping mechanism in the present invention.

[0024] Figure 3 It is a three-dimensional structural schematic diagram of the guardrail mechanism in the present invention.

[0025] Figure 4 It is a three-dimensional structural schematic diagram of the conveying structure in the present invention.

[0026] Figure 5 It is a three-dimensional structural schematic diagram of the jacking structure in the present invention.

[0027] Figure 6 It is a three-dimensional structural schematic diagram of the guide member in the present invention.

[0028] Figure 7 It is a schematic flow chart of the palletizing method of the turnover box palletizer of the present invention.

[0029] The numbers in the figure represent: 1. frame; 2. conveying mechanism; 21. conveying track; 211. pallet chain; 212. chain friction plate; 22. transition roller; 3. lifting mechanism; 31. top plate; 32. lifting cylinder; 33. lifting guide rod; 34. linear bearing; 4. clamping mechanism; 41. clamping shaft; 42. ratchet block; 43. torsion spring; 44. clamping drive assembly; 441. first drive cylinder; 442. V-shaped connecting rod; 443. first swing arm connecting rod; 5. guardrail mechanism; 51. guardrail shaft; 52. guardrail; 53. guardrail driving assembly; 531. second drive cylinder; 532. second swing arm connecting rod; 533. synchronous connecting rod; 534. third swing arm connecting rod; 61. horizontal guide member; 62. side vertical guide member; 63. end vertical guide member. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Figures 1 to 6 An embodiment of the turnover box palletizer of the present invention is shown. The turnover box palletizer of this embodiment includes a frame 1, on which a conveying mechanism 2, a pair of clamping mechanisms 4 and a pair of openable guardrail mechanisms 5 are provided. The conveying mechanism 2 includes two conveying rails 21, and a lifting mechanism 3 for driving the turnover boxes on the conveying rails 21 to rise and fall is provided between the two rows of conveying rails 21. The pair of clamping mechanisms 4 are respectively arranged above the two rows of conveying rails 21, and the pair of guardrail mechanisms 5 are respectively arranged at the discharge ends of the two rows of conveying rails 21.

[0032] The turnover box palletizer is provided with two rows of conveying tracks 21 on a frame 1, a lifting mechanism 3 is provided between the two rows of conveying tracks 21, and a clamping mechanism 4 is provided above the conveying track 21. After the turnover box is transported to the right position, it can be lifted upward to between the clamping mechanisms 4, and the current bottom turnover box is clamped and fixed by the clamping mechanism 4, and then the lifting mechanism 3 is lowered and reset, and the subsequent cycle action can realize palletizing. During the palletizing process, a pair of guardrail mechanisms 5 provide protection and guidance for the end faces of the turnover boxes to ensure neat palletizing. After palletizing to a set number, the lifting mechanism 3 rises to receive the turnover box stacking material, the clamping mechanism 4 is released, the lifting mechanism 3 is lowered to transfer the stacking material to the conveying track 21, the pair of guardrail mechanisms 5 is opened, and the conveying track 21 outputs the stacking material from between the pair of guardrail mechanisms 5. The structure is simple and reliable, the cost is low, the maintenance is easy, and the palletizing speed is fast, which realizes the effective connection between the single conveying pre-process and the whole stacking conveying post-process in the logistics system.

[0033] Furthermore, in this embodiment, the clamping mechanism 4 includes a clamping shaft 41 arranged parallel to the conveying track 21 and a clamping drive assembly 44 for driving the clamping shaft 41 to rotate. The clamping shaft 41 is provided with a plurality of ratchet blocks 42 that can rotate upward in one direction, and each ratchet block 42 is equipped with a torsion spring 43 for resetting. During operation, the lifting mechanism 3 lifts the turnover box upward, and the protruding part of the edge of the turnover box overcomes the elastic force of the torsion spring 43 to push the ratchet block 42 upward. After the protruding part of the edge of the turnover box passes the ratchet block 42, the ratchet block 42 flips downward and resets under the elastic force of the torsion spring 43. After the lifting mechanism 3 is lifted into place, it descends and resets. The turnover box descends, and the ratchet block 42 receives the protruding part of the edge of the turnover box to clamp and fix the turnover box. During the entire stacking process, the clamping mechanism 4 passively moves with the lifting and lowering movement of the lifting mechanism 3, and no driving components are required. The structure is simple, reliable and low in cost. After palletizing is completed, the lifting mechanism 3 moves upward to receive the stacking materials, and the rotation of the clamping shaft 41 drives the ratchet blocks 42 to tilt downward as a whole to make room, and the stacking materials can be smoothly transferred to the conveying track 21.

[0034] Furthermore, in this embodiment, the clamping drive assembly 44 includes a first driving cylinder 441, a V-shaped connecting rod 442 and a first swing arm connecting rod 443. The V-shaped connecting rod 442 is rotatably arranged on the frame 1. The piston rod of the first driving cylinder 441 is hinged to one end of the V-shaped connecting rod 442, and the other end of the V-shaped connecting rod 442 is hinged to one end of the first swing arm connecting rod 443. The other end of the first swing arm connecting rod 443 is fixedly connected to the clamping shaft 41. When the ratchet block 42 needs to be tilted downward to release or flipped upward to reset, the first driving cylinder 441 is extended and retracted up and down, driving the V-shaped connecting rod 442 to rotate around the rotation center, and the V-shaped connecting rod 442 drives the first swing arm 443 to swing, thereby realizing the rotation of the clamping shaft 41. The reliability is high, and the clamping shaft 41 is not easy to malfunction when subjected to the gravity of the stacked materials. The structure is compact and convenient for layout on the frame 1.

[0035] Furthermore, in the present embodiment, the guardrail mechanism 5 comprises a guardrail rotating shaft 51 arranged vertically and a guardrail 52 provided on the inner side of the guardrail rotating shaft 51 (or the two guardrails 52 are located between the two guardrail rotating shafts 51). A guardrail driving assembly 53 for driving the two guardrails 52 to open and close is provided between the two guardrail rotating shafts 51. The guardrail driving assembly 53 comprises a second driving cylinder 531, a second swing arm connecting rod 532, a synchronous connecting rod 533 and two third swing arm connecting rods 534. The piston rod of the second driving cylinder 531 is hinged to one end of the second swing arm connecting rod 532, and the other end of the second swing arm connecting rod 532 is fixed to one of the guardrail rotating shafts 51. The two third swing arm connecting rods 534 are respectively fixed to the two guardrail rotating shafts 51, and the two ends of the synchronous connecting rod 533 are respectively hinged to the two third swing arm connecting rods 534. When the two guardrails 52 are closed, they can provide guidance and protection for the end faces of the stacked materials to ensure neat stacking; when they need to be opened for movement, the second driving cylinder 531 extends out, driving the second swing arm connecting rod 532 to swing, thereby realizing the rotation of the corresponding guardrail rotating shaft 51, and the guardrail rotating shaft 51 drives the third swing arm connecting rod 534 and the guardrail 52 thereon to swing, and the third swing arm connecting rod 534 drives the other guardrail 52 to swing synchronously through the synchronous connecting rod 533, another third swing arm 534 and another guardrail rotating shaft 51 in turn. The structure is simple and reliable, occupies less space, and has a flexible layout on the frame 1.

[0036] As a preferred technical solution, in this embodiment, the conveying track 21 includes a pallet chain 211 and a chain friction plate 212 disposed below the pallet chain 211. The pallet chain 211 is used to convey the turnover box, and the chain friction plate 212 provides support for the pallet chain 211 to ensure stable and smooth conveying. Of course, in other embodiments, other existing conveying mechanisms can also be used to realize the conveying of the turnover box.

[0037] As a preferred technical solution, in this embodiment, a transition roller 22 is provided at the outlet end of the conveying track 21. The transition roller 22 can reduce the gap between the outlet end of the conveying track 21 and the next process, so as to facilitate the smooth transfer of the stacked materials.

[0038] Furthermore, the lifting mechanism 3 includes a top plate 31, and both ends of the top plate 31 are provided with a lifting cylinder assembly and a guide assembly. The lifting cylinder assembly includes two lifting cylinders 32 with different strokes, and the guide assembly includes a lifting guide rod 33 and a linear bearing 34 sleeved on the outer periphery of the lifting guide rod 33. The lifting guide rod 33 is arranged on the top plate 31, and the linear bearing 34 is arranged on the frame 1. The lifting cylinder 32 is used to drive the top plate 31 and the turnover box thereon to rise. The linear bearing 34 cooperates with the lifting guide rod 33 to improve the movement accuracy and ensure that the lifting process of the turnover box is stable and smooth. Lifting cylinders 32 with different strokes can be used for turnover boxes of different specifications, and have stronger adaptability. In this embodiment, the two lifting cylinders 32 with longer strokes are located outside the two lifting cylinders 32 with shorter strokes. The piston rod of the lifting cylinder 32 with longer stroke is hinged to the top plate 31, and the lifting cylinder 32 with shorter stroke is in a free state, relying only on the gravity of the top plate 31 and the turnover box thereon to form active contact. When lifting, the lifting cylinder 32 with longer stroke or the lifting cylinder 32 with shorter stroke can be used, but when driving the stack material to descend, the lifting cylinder 32 with longer stroke must be used.

[0039] Furthermore, in this embodiment, a horizontal guide 61 and a side vertical guide 62 are provided above the conveying track 21, and an end face vertical guide 63 is provided at the entrance end of the conveying track 21. The horizontal guide 61, the side vertical guide 62, and the end face vertical guide 63 cooperate with the guardrail mechanism 5 to guide and protect the stacking materials all around, ensuring neat stacking, simple structure, and reliability.

[0040] Figure 7 An embodiment of a palletizing method of a turnover box palletizer of the present invention is shown. The palletizing method of this embodiment comprises the following steps:

[0041] S1, two rows of conveying tracks 21 convey the turnover box to the top of the lifting mechanism 3;

[0042] S2, lifting and stacking: the lifting mechanism 3 drives the turnover box to rise one box position, the clamping mechanism 4 clamps the turnover box at the current bottom layer, and then the lifting mechanism 3 is reset;

[0043] S3, continuous palletizing: repeat steps S1 and S2 until the target number of turnover boxes are palletized;

[0044] S4, stack material output: the lifting mechanism 3 rises to receive the stack material, the clamping mechanism 4 releases the stack material, the lifting mechanism 3 descends to drive the stack material to fall onto the conveying track 21, the guardrail mechanism 5 opens, and the conveying track 21 outputs the stack material.

[0045] In the palletizing method, the conveying track 21 continuously conveys the turnover boxes to the position, and the lifting mechanism 3 only needs to rise one box position each time, and can complete continuous palletizing in cooperation with the clamping mechanism 4. After the palletizing is completed, the lifting mechanism 3 is used to transfer the stacking materials to the conveying track 21 again. The steps are simple, the movements are smooth, and the efficiency is high.

[0046] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A turnover box palletizer, characterized in that: The invention comprises a frame (1), wherein the frame (1) is provided with a conveying mechanism (2), a pair of clamping mechanisms (4) and a pair of openable guardrail mechanisms (5), wherein the conveying mechanism (2) comprises two conveying rails (21), a lifting mechanism (3) for driving the turnover boxes on the conveying rails (21) to rise and fall is provided between the two rows of the conveying rails (21), the pair of clamping mechanisms (4) are respectively arranged above the two rows of the conveying rails (21), and the pair of guardrail mechanisms (5) are respectively arranged at the discharge ends of the two rows of the conveying rails (21); the guardrail mechanism (5) comprises a guardrail rotating shaft (51) arranged vertically and a guardrail (52) arranged on the inner side of the guardrail rotating shaft (51), and the two guardrail rotating shafts (51) are respectively arranged at the discharge ends of the two rows of the conveying rails (21). 1) is provided with a guardrail driving assembly (53) for driving the two guardrails (52) to open and close, the guardrail driving assembly (53) comprising a second driving cylinder (531), a second swing arm connecting rod (532), a synchronous connecting rod (533) and two third swing arm connecting rods (534), the piston rod of the second driving cylinder (531) is hinged to one end of the second swing arm connecting rod (532), the other end of the second swing arm connecting rod (532) is fixed on one of the guardrail rotating shafts (51), the two third swing arm connecting rods (534) are respectively fixed on the two guardrail rotating shafts (51), and the two ends of the synchronous connecting rod (533) are respectively hinged to the two third swing arm connecting rods (534).

2. The turnover box palletizer according to claim 1, characterized in that: The clamping mechanism (4) comprises a clamping shaft (41) arranged parallel to the conveying track (21) and a clamping drive assembly (44) for driving the clamping shaft (41) to rotate. The clamping shaft (41) is provided with a plurality of ratchet blocks (42) which can rotate upward in one direction, and each ratchet block (42) is equipped with a torsion spring (43) for resetting.

3. The turnover box palletizer according to claim 2, characterized in that: The clamping drive assembly (44) comprises a first driving cylinder (441), a V-shaped connecting rod (442) and a first swing arm connecting rod (443); the V-shaped connecting rod (442) is rotatably arranged on the frame (1); the piston rod of the first driving cylinder (441) is hinged to one end of the V-shaped connecting rod (442); the other end of the V-shaped connecting rod (442) is hinged to one end of the first swing arm connecting rod (443); and the other end of the first swing arm connecting rod (443) is fixedly connected to the clamping shaft (41).

4. The turnover box palletizer according to any one of claims 1 to 3, characterized in that: The conveying track (21) comprises a pallet chain (211) and a chain friction plate (212) arranged below the pallet chain (211).

5. The turnover box palletizer according to claim 4, characterized in that: A transition roller (22) is provided at the outlet end of the conveying track (21).

6. The turnover box palletizer according to any one of claims 1 to 3, characterized in that: The lifting mechanism (3) comprises a top plate (31), and both ends of the top plate (31) are provided with a lifting cylinder assembly and a guide assembly, the lifting cylinder assembly comprises two lifting cylinders (32) with different strokes, and the guide assembly comprises a lifting guide rod (33) and a linear bearing (34) sleeved on the outer periphery of the lifting guide rod (33), the lifting guide rod (33) is arranged on the top plate (31), and the linear bearing (34) is arranged on the frame (1).

7. The turnover box palletizer according to any one of claims 1 to 3, characterized in that: A horizontal guide member (61) and a side vertical guide member (62) are provided above the conveying track (21), and an end surface vertical guide member (63) is provided at the entrance end of the conveying track (21).

8. A palletizing method for a turnover box palletizer according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1, two rows of conveying tracks (21) convey the turnover boxes to the top of the lifting mechanism (3); S2, lifting and stacking: the lifting mechanism (3) drives the turnover box to rise one box position, the clamping mechanism (4) clamps the turnover box at the current bottom layer, and then the lifting mechanism (3) is reset; S3, continuous palletizing: repeat steps S1 and S2 until the target number of turnover boxes are palletized; S4, stack material output: the lifting mechanism (3) rises to receive the stack material, the clamping mechanism (4) releases the stack material, the lifting mechanism (3) descends to drive the stack material to fall onto the conveying track (21), the guardrail mechanism (5) opens, and the conveying track (21) outputs the stack material.

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