An all-electric pallet unstacker and stacker

Abstract

The utility model discloses a full electric tray unstacking and stacking machine relates to article transport equipment technical field, including frame, the inside slide coupling of frame has two symmetrical arrangement's lifting frame, synchronous lifting mechanism includes lifting drive part, drive shaft and transmission assembly, and lifting drive part installs at the top of frame, and drive shaft is installed at the top of frame through bearing seat, and with the power output end transmission of lifting drive part connects, transmission assembly is connected between drive shaft and lifting frame, and can drive two lifting frames along the vertical direction of frame synchronous up and down motion, the mechanism of inserting and taking includes the linear drive part of installing respectively on two lifting frames, and with linear drive part output end transmission connection's insert and take board, and the insert and take board under the driving of linear drive part along the horizontal direction of frame does the reciprocating motion of each other close or far away, through a drive shaft connection transmission assembly, guarantees the synchronous lifting of two lifting frames, and the insert and take board does each other close or far away motion, can adapt to different specifications tray.

Description

Technical Field

[0001] This utility model relates to the field of goods transportation equipment technology, and more specifically to a fully electric pallet depalletizing and stacking machine. Background Technology

[0002] With the rapid development of modern logistics and warehousing, automated storage and retrieval systems (AS / RS) are widely used. As one of their key pieces of equipment, pallet depalletizers and stackers are used for splitting and stacking empty pallets, and their efficiency and reliability directly affect the operation of the entire warehousing system.

[0003] Currently, most pallet depalletizing and stacking machines on the market use hydraulic or pneumatic drives. While hydraulic drives offer high power, they suffer from high energy consumption, are prone to oil leaks, require a hydraulic power unit, have high maintenance costs, and pose a potential threat to environmental cleanliness. Pneumatic drives, due to the compressibility of air, suffer from poor operational stability and positioning accuracy, making them unsuitable for high-precision operations. Furthermore, the layout of the power source and pipelines, regardless of whether hydraulic or pneumatic, is heavily constrained by the site environment, limiting the flexibility of equipment layout. In terms of mechanical structure, existing equipment mainly suffers from the following technical problems:

[0004] Poor synchronization: The lifting mechanism of some equipment uses two independent drive motors to control the lifting frames on both sides respectively. Due to factors such as motor response characteristics and transmission errors, it is difficult to guarantee absolute synchronous movement.

[0005] Insufficient adaptability: Traditional insertion and retraction mechanisms can only perform overall feeding and retraction actions, and cannot adjust the spacing of the insertion and retraction plates according to the specifications of the pallet or the operational requirements, which limits the equipment's ability to handle pallets of different sizes and reduces its versatility.

[0006] Therefore, how to provide a new type of pallet destacking and stacking machine that is fully electric driven, has high synchronization accuracy, and is highly adaptable is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0007] In view of this, the present invention provides a fully electric pallet destacking and stacking machine, which aims to solve the above-mentioned technical problems.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A fully electric pallet depalletizing and stacking machine includes:

[0010] The frame has two symmetrically arranged lifting frames that are slidably connected to its inner side;

[0011] A synchronous lifting mechanism includes a lifting drive unit, a drive shaft, and a transmission assembly. The lifting drive unit is mounted on the top of the frame, and the drive shaft is mounted on the top of the frame via a bearing seat and is connected to the power output end of the lifting drive unit. The transmission assembly is connected between the drive shaft and the lifting frame and is capable of driving the two lifting frames to move synchronously up and down along the vertical direction of the frame.

[0012] The insertion mechanism includes linear drive units respectively mounted on two lifting frames, and insertion plates that are pulsatorically connected to the output end of the linear drive units; the insertion plates reciprocate along the horizontal direction of the frame under the drive of the linear drive units, moving closer to or further away from each other.

[0013] Through the above technical solution, the all-electric pallet depalletizing and stacking machine provided by this utility model adopts motor drive, eliminating the dependence on hydraulic station or air compressor, effectively solving the problems of high energy consumption, easy oil and air leakage, complex maintenance, and high requirements for environmental cleanliness that exist in traditional methods, and achieving cleaner and more energy-efficient operation and maintenance; the structure setting of connecting the transmission components with a single drive shaft ensures the synchronous lifting of the two lifting frames, effectively avoiding the problems of asynchrony, jamming, and lifting frame twisting that may occur when using two independent motors, greatly improving the reliability and lifespan of the equipment; the insertion and removal plates can move closer or further apart, allowing one machine to adapt to pallets of different lengths and specifications, and can operate flexibly without changing parts, solving the problem of poor versatility of traditional equipment.

[0014] Preferably, in the above-mentioned all-electric pallet destacking and stacking machine, the lifting drive unit includes a first motor, a driving sprocket, and a driven sprocket; the first motor is mounted on the top of the frame, the driving sprocket is fixed on the power output shaft of the first motor, and the driven sprocket is fixed to one end of the drive shaft; the driving sprocket and the driven sprocket are connected by a first chain drive. Using sprockets and a first chain for power transmission provides higher load-bearing capacity and impact resistance, precise transmission ratio, and is particularly suitable for heavy-load starting and operating conditions required by the lifting mechanism, ensuring strong and reliable power transmission.

[0015] Preferably, in the above-mentioned all-electric pallet destacking and stacking machine, the transmission assembly includes a first sprocket fixed to both ends of the drive shaft, a second sprocket rotatably connected to both sides of the bottom end of the frame, and two second chains. One end of each second chain is fixed to the bottom end of the lifting frame, and the other end sequentially wraps around the second sprocket and the first sprocket, and is fixed to the lifting frame. The closed-loop chain drive formed by the double sprockets has strong chain load-bearing capacity and can stably lift heavy-duty pallets. Compared with belt drive, chain drive has no elastic slippage, ensuring a fixed transmission ratio and thus ensuring precise control of the lifting position.

[0016] Preferably, in the above-mentioned all-electric pallet destacking and stacking machine, the lifting frame has a rectangular structure, and both the top and bottom edges of the lifting frame have through holes for the chain to pass through; the side edges of the lifting frame are slidably connected to the machine frame. The lifting frame adopts a rectangular frame structure and provides through holes for the chain, allowing the transmission components to be built into the frame, resulting in a compact overall structure that saves space while ensuring overall structural rigidity.

[0017] Preferably, in the above-mentioned all-electric pallet destacking and stacking machine, rollers are installed on the side frame of the lifting frame, and the rollers are slidably connected to the vertical rods of the frame. This guiding method, using rollers in conjunction with the vertical rods of the frame, transforms sliding friction into rolling friction, reducing motion resistance and making lifting easier and smoother. It also reduces wear, improves guiding accuracy, and extends equipment lifespan.

[0018] Preferably, in the above-mentioned all-electric pallet destacking and stacking machine, the linear drive unit includes a linear motor, a main guide rail, and a main slider. The linear motor is mounted on the lifting frame, the main guide rail is fixed on the lifting frame, and the main slider is slidably connected to the main guide rail, with the insertion plate fixed to its top surface. The main slider is driven by the power output end of the linear motor. By employing a linear motor and guide rail slider drive system, the linear motor itself features high speed, high acceleration, and high precision. Combined with the high-rigidity guide rail slider pair, this ensures that the insertion plate can be quickly and accurately inserted into narrow pallet gaps.

[0019] Preferably, in the above-mentioned all-electric pallet destacking and stacking machine, the linear drive unit further includes an auxiliary guide rail and an auxiliary slider. The auxiliary guide rail is fixed on the lifting frame, and the auxiliary slider is slidably connected to the auxiliary guide rail, with the insertion plate fixed on its top surface. A connecting plate is fixedly connected between the auxiliary slider and the main slider. By setting a dual-guide rail structure of the main and auxiliary guide rails, a stable double support is formed, which greatly improves the torsional and overturning resistance of the insertion plate when subjected to unbalanced loads (such as excessive weight on one side of the pallet), ensures the absolute smoothness of the insertion action, prevents jamming and wear, and further improves the positioning accuracy and equipment reliability.

[0020] Preferably, in the above-mentioned all-electric pallet depalletizing and stacking machine, symmetrically arranged vertical guide rods and horizontal guide rods are fixed inside the frame and between the two lifting frames. The symmetrically arranged vertical guide rods form a guide channel, which confines the pallet within the channel during lifting; this effectively prevents the pallet from tilting or swaying forward or backward or left or right during lifting, avoiding the risk of jamming, inaccurate positioning, or cargo tipping due to pallet tilting; the horizontal guide rods (usually set on the pallet's entry path or at the bottom) prevent the pallet from rotating or moving laterally in the horizontal direction, ensuring that the pallet maintains the correct posture throughout the entire process of insertion, movement, and placement.

[0021] As can be seen from the above technical solution, compared with the prior art, the present invention discloses a fully electric pallet depalletizing and stacking machine, which has the following beneficial effects:

[0022] 1. This utility model solves the problems of high energy consumption, easy leakage, complex maintenance and environmental cleanliness requirements of traditional hydraulic or pneumatic drive equipment by adopting a fully electric drive scheme; by using an electric motor as a power source, it realizes the clean and efficient operation of the equipment, reduces long-term use costs, and improves the applicability of the equipment in modern cleanrooms and other environments.

[0023] 2. This utility model adopts a single drive shaft combined with a chain and sprocket mechanism to achieve synchronous lifting of the two lifting frames, effectively solving the risks of jamming, frame twisting, and pallet damage caused by asynchronous operation of dual motors. At the same time, the low-friction guiding system composed of rollers and vertical rods ensures a smooth and stable lifting process, combining high positioning accuracy and long service life, greatly enhancing the reliability and stability of equipment operation.

[0024] 3. The insertion and picking mechanism of this utility model controls the relative movement of multiple sets of insertion plates through an independent linear drive unit, allowing a single device to flexibly adapt to pallets of different sizes and specifications, thus improving the versatility of the equipment and the utilization rate of the space. In addition, the precision drive system composed of a linear motor and a double guide rail pair ensures high speed, high precision, and high rigidity of the insertion and picking action, enabling it to accurately and stably complete depalletizing and palletizing tasks under various complex working conditions. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0026] Figure 1The attached figure is an isometric view of the all-electric pallet destacking and stacking machine provided by this utility model;

[0027] Figure 2 The attached image is... Figure 1 An enlarged view of section A provided in the attached figure;

[0028] Figure 3 The attached figure is a side view of the all-electric pallet depalletizing and stacking machine provided by this utility model;

[0029] Figure 4 The attached image is... Figure 1 An enlarged view of section B provided in the attached figure;

[0030] Figure 5 The attached figure is a front view of the all-electric pallet destacking and stacking machine provided by this utility model.

[0031] in:

[0032] 1-Frame; 11-Vertical guide rod; 12-Horizontal guide rod; 2-Lifting frame; 21-Top frame; 22-Bottom frame; 23-Through hole; 24-Side frame; 25-Roller; 3-Lifting drive unit; 31-First motor; 32-Driving sprocket; 33-Driven sprocket; 34-First chain; 4-Drive shaft; 5-Transmission assembly; 51-First sprocket; 52-Second sprocket; 53-Second chain; 6-Linear drive unit; 61-Linear motor; 62-Main guide rail; 63-Main slider; 64-Auxiliary guide rail; 65-Auxiliary slider; 66-Connecting plate; 7-Insertion plate. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] See appendix Figure 1 Appendix Figure 3 and attached Figure 5 As shown, this utility model embodiment discloses a fully electric pallet depalletizing and stacking machine, comprising:

[0035] The frame 1 has two symmetrically arranged lifting frames 2 that are slidably connected to its inner side;

[0036] The synchronous lifting mechanism includes a lifting drive unit 3, a drive shaft 4, and a transmission assembly 5. The lifting drive unit 3 is installed on the top of the frame 1. The drive shaft 4 is installed horizontally on the top of the frame 1 through a bearing seat 41 and is connected to the power output end of the lifting drive unit 3. The transmission assembly 5 is connected between the drive shaft 4 and the lifting frame 2 and can drive the two lifting frames 2 to move up and down synchronously along the vertical direction of the frame 1.

[0037] The insertion mechanism includes a linear drive unit 6 mounted on two lifting frames 2 respectively, and an insertion plate 7 that is connected to the output end of the linear drive unit 6. The insertion plate 7 moves back and forth along the horizontal direction of the frame 1 under the drive of the linear drive unit 6, moving closer to or further away from each other.

[0038] In some specific examples, such as Figure 2 As shown, the lifting drive unit 3 includes a first motor 31, a drive sprocket 32, and a driven sprocket 33. The first motor 31 is mounted on the top of the frame 1, the drive sprocket 32 ​​is fixed on the power output shaft of the first motor 31, and the driven sprocket 33 is fixed on one end of the drive shaft 4. The drive sprocket and the driven sprocket are connected by a first chain 34.

[0039] In other embodiments, such as Figure 3 As shown, the transmission assembly 5 includes a first sprocket 51 fixed at both ends of the drive shaft 4, a second sprocket 52 rotatably connected to both sides of the bottom end of the frame 1, and two second chains 53. One end of each second chain 53 is fixed to the bottom end of the lifting frame 2, and the other end is sequentially wrapped around the second sprocket 52 and the first sprocket 51 and fixed on the lifting frame 2.

[0040] In specific embodiments, such as Figure 4 As shown, the lifting frame 2 has a rectangular structure. The top frame 21 and bottom frame 22 of the lifting frame 2 are both provided with through holes 23 for the second chain 53 to pass through. The side frame 24 of the lifting frame 2 is slidably connected to the frame 1.

[0041] In a specific example, such as Figure 4 As shown, rollers 25 are installed on the side frame 24 of the lifting frame 2, and the rollers 25 are slidably connected to the vertical rod of the frame 1.

[0042] In some examples, such as Figure 4 As shown, the linear drive unit 6 includes a linear motor 61, a main guide rail 62, and a main slider 63. The linear motor 61 is mounted on the lifting frame 2, the main guide rail 62 is fixed on the lifting frame 2, and the main slider 63 is slidably connected to the main guide rail 62, with an insertion plate 7 fixed on its top surface. The main slider 63 is connected to the power output end of the linear motor 61.

[0043] More specifically, such as Figure 4As shown, the linear drive unit 6 also includes an auxiliary guide rail 64 and an auxiliary slider 65. The auxiliary guide rail 64 is fixed on the lifting frame 2, and the auxiliary slider 65 is slidably connected to the auxiliary guide rail 64, with an insertion plate 7 fixed on its top surface. A connecting plate 66 is fixedly connected between the auxiliary slider 65 and the main slider 63.

[0044] like Figure 1 As shown, the insertion plates 7 located on both sides of the frame 1 can reciprocate linearly in opposite directions or relative to each other along the horizontally arranged main guide rail 62 and auxiliary guide rail 64 under the drive of the linear motor 61, so as to realize the insertion and release of the tray.

[0045] In some specific examples, symmetrically arranged vertical guide rods 11 and horizontal guide rods 12 are fixed inside the frame 1 and between the two lifting frames 2.

[0046] More specifically, both the vertical guide rod 11 and the horizontal guide rod 12 are round steel pipes. During the unstacking or stacking process, these round steel pipes can straighten and guide the pallets, forming a reliable running channel. This effectively prevents the pallets from tilting, shifting, or getting stuck during lifting and moving, thereby greatly improving the reliability and stability of the equipment.

[0047] The core of the working principle of the all-electric pallet depalletizing and stacking machine of this utility model lies in the precise coordination of two actions: synchronous lifting and adaptive insertion. The following describes its working process in detail, taking depalletizing as an example, with reference to the accompanying drawings:

[0048] Step 1: Positioning and Height Adjustment

[0049] The equipment is placed in front of a pallet stack fully loaded with empty pallets. The lifting drive unit 3 is activated, and the first motor 31 transmits power to the drive shaft 4 through the driving sprocket 32, the first chain 34, and the driven sprocket 33, causing it to rotate. The drive shaft 4 drives the first sprocket 51, which is fixed at both ends, to rotate synchronously. The second chain 53 pulls the lifting frame 2 along the vertical bar of the frame 1, and the rollers 25 guide it to rise and fall smoothly until the insertion plate 7 is precisely aligned with the gap height between the target pallet and the lower pallet.

[0050] Step 2: Insert or remove the tray

[0051] After alignment, the two linear drive units 6 operate simultaneously. The linear motor 61 drives the main slider 63 to move horizontally along the main guide rail 62, while simultaneously driving the auxiliary slider 65 to move synchronously on the auxiliary guide rail 64 via the connecting plate 66. This causes the insertion plate 7, fixed on the main slider 63 and the auxiliary slider 65, to extend synchronously and be precisely inserted into the tray gap. During this process, the vertical guide rod 11 and the horizontal guide rod 12, fixed on the inner side of the frame 1, together form a guide channel to straighten the tray and prevent it from tilting or shifting.

[0052] Step 3: Extraction and Transfer

[0053] After the insertion and removal action is completed, the synchronous lifting mechanism starts again, causing the lifting frame 2 and the removed pallet to rise a short distance, separating the pallet from the pallet stack below. The pallet is then transferred to the conveyor line, completing the pallet removal process.

[0054] Step 4: Placement and Resetting

[0055] The equipment moves to the target workstation or palletizing position, the synchronous lifting mechanism adjusts the height, and the linear drive unit 6 drives the insertion plate 7 to retract, smoothly placing the pallet in the designated position, thus completing one depalletizing operation cycle. The stacking operation is the reverse process.

[0056] Through the above-described workflow, this invention achieves high-precision synchronous lifting and adaptive insertion under all-electric drive, effectively solving the technical problems of poor synchronization and insufficient adaptability of traditional equipment.

[0057] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0058] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fully electric pallet depalletizing and stacking machine, characterized in that, include: A frame (1) has two symmetrically arranged lifting frames (2) slidably connected to its inner side; The synchronous lifting mechanism includes a lifting drive unit (3), a drive shaft (4), and a transmission assembly (5). The lifting drive unit (3) is installed on the top of the frame (1). The drive shaft (4) is installed horizontally on the top of the frame (1) through a bearing seat (41) and is connected to the power output end of the lifting drive unit (3). The transmission assembly (5) is connected between the drive shaft (4) and the lifting frame (2) and can drive the two lifting frames (2) to move up and down synchronously along the vertical direction of the frame (1). The insertion mechanism includes linear drive units (6) respectively installed on the two lifting frames (2), and insertion plates (7) that are connected to the output end of the linear drive units (6); the insertion plates (7) reciprocate along the horizontal direction of the frame (1) under the drive of the linear drive units (6) and move closer or further away from each other.

2. The all-electric pallet depalletizing and stacking machine according to claim 1, characterized in that, The lifting drive unit (3) includes a first motor (31), a drive sprocket (32), and a driven sprocket (33); the first motor (31) is mounted on the top of the frame (1), the drive sprocket (32) is fixed on the power output shaft of the first motor (31), and the driven sprocket (33) is fixed at one end of the drive shaft (4). The drive sprocket and the driven sprocket are connected by a first chain (34).

3. The all-electric pallet depalletizing and stacking machine according to claim 1, characterized in that, The transmission assembly (5) includes a first sprocket (51) fixed at both ends of the drive shaft (4), a second sprocket (52) rotatably connected to both sides of the bottom end of the frame (1), and two second chains (53). One end of each second chain (53) is fixed to the bottom end of the lifting frame (2), and the other end is sequentially wrapped around the second sprocket (52) and the first sprocket (51) and fixed on the lifting frame (2).

4. The all-electric pallet depalletizing and stacking machine according to claim 3, characterized in that, The lifting frame (2) has a rectangular structure. The top frame (21) and bottom frame (22) of the lifting frame (2) are provided with through holes (23) for the second chain (53) to pass through. The side frame (24) of the lifting frame (2) is slidably connected to the frame (1).

5. The all-electric pallet depalletizing and stacking machine according to claim 4, characterized in that, The side frame (24) of the lifting frame (2) is equipped with rollers (25), and the rollers (25) are slidably connected to the vertical rod of the frame (1).

6. The all-electric pallet depalletizing and stacking machine according to claim 1, characterized in that, The linear drive unit (6) includes a linear motor (61), a main guide rail (62), and a main slider (63). The linear motor (61) is mounted on the lifting frame (2), the main guide rail (62) is fixed on the lifting frame (2), and the main slider (63) is slidably connected to the main guide rail (62), with the insertion plate (7) fixed on its top surface. The main slider (63) is connected to the power output end of the linear motor (61) via a transmission connection.

7. A fully electric pallet depalletizing and stacking machine according to claim 6, characterized in that, The linear drive unit (6) further includes an auxiliary guide rail (64) and an auxiliary slider (65). The auxiliary guide rail (64) is fixed on the lifting frame (2). The auxiliary slider (65) is slidably connected to the auxiliary guide rail (64), and the insertion plate (7) is fixed on its top surface. A connecting plate (66) is fixedly connected between the auxiliary slider (65) and the main slider (63).

8. The all-electric pallet depalletizing and stacking machine according to claim 1, characterized in that, On the inner side of the frame (1) and between the two lifting frames (2), there are symmetrically arranged vertical guide rods (11) and horizontal guide rods (12).

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