A double-deck pallet conveyor

Abstract

The utility model relates to a kind of double-layer tray conveying device, comprising: frame body;Roller mechanism, for conveying the tray to be transmitted along the first direction, it includes multiple interval settings and is rotationally connected in frame body's roller;Transfer mechanism, it includes: conveyor belt, drive assembly, lifting assembly and support plate, the conveyor belt is arranged in the side of roller mechanism output end along the second direction, the drive assembly is along for driving lifting assembly to move between roller mechanism and conveyor belt along the second direction;Stop mechanism is respectively arranged in roller mechanism and transfer mechanism and is used to stop the tray to be transmitted. The utility model is set above, realizes multi-direction continuous conveying, breaks through single direction limit, improves the flexibility and adaptability of system. And interference lifting link, realize tray stable transfer, use lifting assembly to solve the interference problem when transferring between roller mechanism and conveyor belt.

Description

Technical Field

[0001] This utility model relates to the field of conveying device technology, and in particular to a double-layer pallet conveying device. Background Technology

[0002] In industrial automation production, such as electronics manufacturing and logistics warehousing, pallets serve as the core carrier for material carrying and transfer. The efficiency, accuracy, and flexibility of their conveying systems directly determine the operational efficiency of the entire production line or warehousing system.

[0003] Traditional pallet conveying devices can only achieve continuous conveying in one direction. When it is necessary to transfer pallets across directions, manual handling or complex turntable mechanisms are required. For example, when using a roller mechanism to connect the upstream and the conveyor belt to the downstream, mechanical interference can easily occur between the roller mechanism and the conveyor belt at the point of change of direction, causing instability in the pallet transfer process. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the problem that traditional pallet conveying devices in the prior art can only achieve continuous conveying in one direction, and that the roller mechanism and conveyor belt are prone to mechanical interference, resulting in instability during the pallet transfer process. Thus, a double-layer pallet conveying device is provided.

[0005] To solve the above-mentioned technical problems, this utility model provides a double-layer pallet conveying device, comprising:

[0006] Frame;

[0007] A roller mechanism for conveying a pallet to be transferred along a first direction, comprising a plurality of rollers spaced apart and rotatably connected to a frame;

[0008] A transfer mechanism includes: a conveyor belt, a drive assembly, a lifting assembly, and a pallet. The conveyor belt is disposed on one side of the output end of the roller mechanism along a second direction. The drive assembly is used to drive the lifting assembly to move between the roller mechanism and the conveyor belt along the second direction. The pallet is connected to the output end of the lifting assembly and can be driven to move along a third direction. The pallet is used to carry the pallet to be transferred and its width is smaller than the distance between adjacent rollers.

[0009] The stop mechanism is respectively installed in the roller mechanism and the transfer mechanism and is used to stop the pallet to be transferred.

[0010] In one embodiment of the present invention, the driving component includes: a linear drive, a sliding pair, and a bracket. The linear drive and the sliding pair are both disposed on the frame along a second direction. The bracket is connected to the output end of the linear drive and is movably connected to the frame through the sliding pair.

[0011] In one embodiment of this utility model, the lifting assembly includes: a linear bearing and a telescopic drive component. One end of the linear bearing is mounted on a bracket and the other end is connected to a support plate. The telescopic drive component is mounted on the bracket and its output end is connected to the support plate.

[0012] In one embodiment of this utility model, limit blocks are connected to both ends of the tray, and anti-slip textures are formed on the surface of the tray.

[0013] In one embodiment of the present invention, the stop mechanism includes: a stop bar, a first guide plate and a second guide plate. The stop bar is disposed at the output end of the roller mechanism along a first direction, the first guide plate is disposed on both sides of the roller mechanism along a second direction, and the second guide plate is disposed on both sides of the conveyor belt.

[0014] In one embodiment of this utility model, the frame is provided with a first sensor, which corresponds to the roller mechanism.

[0015] In one embodiment of the present invention, the conveyor belt includes: a belt frame, a synchronous belt, a synchronous pulley, and a driving component. The synchronous pulley is rotatably connected to both ends of the belt frame, the synchronous belt is wound around the synchronous pulley, and the output end of the driving component is connected to the synchronous pulley.

[0016] In one embodiment of this utility model, the frame is provided with a lifting cylinder, the lifting cylinder is disposed on the movement path of the pallet, and the output end of the lifting cylinder is connected to a baffle.

[0017] In one embodiment of the present invention, a second sensor is provided between the bracket and the frame, and the second sensor is configured as a position sensor.

[0018] In one embodiment of this utility model, the roller mechanism, the transfer mechanism and the stop mechanism are all configured as two sets, and the two sets of roller mechanism, transfer mechanism and stop mechanism are all spaced apart on the frame along a third direction.

[0019] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial effects:

[0020] The double-layer pallet conveying device described in this utility model offers the following advantages: 1. Continuous conveying in multiple directions, overcoming the limitations of a single direction and improving the system's flexibility and adaptability. 2. Interference-free lifting connection, achieving smooth pallet transfer. The width of the pallet in the transfer mechanism is smaller than the distance between adjacent rollers, and the lifting assembly solves the interference problem during transfer between the roller mechanism and the conveyor belt. Attached Figure Description

[0021] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the conveying device of this utility model;

[0023] Figure 2 This is a structural schematic diagram of the conveying device of this utility model from another angle;

[0024] Figure 3 This is a schematic diagram of the transfer mechanism of this utility model;

[0025] Figure 4 This is a schematic diagram of the roller mechanism of this utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the tray of this utility model.

[0027] Explanation of reference numerals in the accompanying drawings: 1. Frame; 2. Roller mechanism; 3. Transfer mechanism; 31. Conveyor belt; 32. Drive assembly; 321. Linear drive component; 322. Sliding pair; 323. Bracket; 33. Lifting assembly; 331. Linear bearing; 332. Telescopic drive component; 333. Pallet; 334. Anti-slip texture; 335. Limiting block; 4. Second guide plate; 5. Pallet; 6. Stop bar; 7. First guide plate; 8. First sensor; 9. Second sensor. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0029] Example

[0030] Reference Figures 1-5 As shown, the present invention provides a double-layer pallet conveying device, comprising:

[0031] Frame 1;

[0032] Roller mechanism 2, which is used to convey the pallet 5 to be transferred along a first direction, includes a plurality of rollers spaced apart and rotatably connected to the frame 1;

[0033] The transfer mechanism 3 includes a conveyor belt 31, a drive assembly 32, a lifting assembly 33, and a pallet 333. The conveyor belt 31 is disposed on one side of the output end of the roller mechanism 2 along a second direction. The drive assembly 32 is used to drive the lifting assembly 33 to move between the roller mechanism 2 and the conveyor belt 31 along the second direction. The pallet 333 is connected to the output end of the lifting assembly 33 and can be driven to move along a third direction. The pallet 333 is used to carry the pallet 5 to be transferred and its width is smaller than the distance between adjacent rollers.

[0034] The stop mechanism is respectively installed on the roller mechanism 2 and the transfer mechanism 3 and is used to stop the pallet 5 to be transferred.

[0035] The double-layer pallet conveying device of this utility model has a frame 1 as the basic support carrier, which is made of high-strength steel welded together or aluminum alloy profile spliced ​​together. The bottom is equipped with adjustable feet to ensure levelness, providing a stable installation benchmark for the roller mechanism 2, the transfer mechanism 3 and the stop mechanism, and ensuring the relative position accuracy of each component. The structural design of the frame 1 must meet the requirements of torsional resistance and load-bearing capacity to avoid deformation due to load during long-term use, which would affect the conveying accuracy.

[0036] The roller mechanism 2 conveys the pallet 5 along the first direction, i.e., the front-to-back direction, and consists of multiple spaced rollers. The rollers are made of seamless steel pipe or engineering plastic, with rust-proof or anti-slip treatment on the surface. The two ends of the rollers are rotatably connected to the crossbeams on both sides of the frame 1 via deep groove ball bearings. The spacing between adjacent rollers must match the lifting requirements of the subsequent pallet 333; that is, the width of the pallet 333 is less than this spacing to ensure that the pallet 333 can pass through the roller gaps. The rollers can be driven actively or passively. Active drive uses chain drive or belt drive, powered by a geared motor, and the friction between the rollers and the bottom of the pallet 5 drives the pallet 5 to move continuously along the first direction. This mechanism features low noise and easy maintenance, and is suitable for continuous conveying of heavy-duty or batch pallets 5. Passive drive provides rotational support, and the pallet 5 slides on the rollers due to inertia.

[0037] The transfer mechanism 3 enables the pallet 5 to be transferred across directions, specifically the second direction, i.e., the left-right direction. The conveyor belt 31 is positioned along the second direction on one side of the output end of the roller mechanism 2 to receive the transferred pallet 5 and continue its transport. The drive assembly 32 is mounted on the frame 1 along the second direction to provide power for the transfer action. The lifting assembly 33 is connected to the drive assembly 32 and drives the pallet 333 to rise and fall along the third direction, i.e., the height direction. The pallet 333 directly supports the pallet 5, and its width is less than the roller spacing. When the pallet 333 rises, it can pass through the roller spacing to lift the pallet 5 away from the roller. When it descends, it can place the pallet 5 on the conveyor belt 31, and the pallet 333 itself retracts to below the roller to avoid interfering with the roller transport.

[0038] Stop mechanisms are respectively installed on the roller mechanism 2 and the transfer mechanism 3 for precise positioning of the pallet 5. On the roller mechanism 2 side, the stop mechanism restricts excessive movement of the pallet 5, keeping it in a position that the pallet 333 can lift; on the transfer mechanism 3 side, the stop mechanism ensures that the pallet 5 is accurately placed on the conveyor belt 31.

[0039] After pallet 5 is conveyed to the stop position along the first direction by roller mechanism 2, lifting component 33 drives pallet plate 333 to rise, passing through the roller gap to lift pallet 5; drive component 32 drives pallet plate 333 to move along the second direction above conveyor belt 31; lifting component 33 drives pallet plate 333 to fall, placing pallet 5 on conveyor belt 31; drive component 32 drives pallet plate 333 back to the side of roller mechanism 2, completing one transfer. The stop mechanism provides positioning throughout the process, ensuring precise operation. Long-distance continuous conveying is achieved through roller mechanism 2, cross-directional transfer is achieved through transfer mechanism 3, and positioning is achieved through the stop mechanism. The three work together to form an efficient conveying link. The width of pallet plate 333 is smaller than the roller gap, which solves the problem of lifting interference. The vertical setting of conveyor belt 31 and roller mechanism 2 expands the path flexibility and is suitable for multi-station pallet 5 transfer scenarios.

[0040] The drive assembly 32 includes a linear drive element 321, a sliding pair 322, and a bracket 323. The linear drive element 321 and the sliding pair 322 are both disposed on the frame 1 along the second direction. The bracket 323 is connected to the output end of the linear drive element 321 and is movably connected to the frame 1 via the sliding pair 322. The drive assembly 32 serves as the power and guiding unit for the transfer mechanism 3 to move along the second direction. Its structure directly determines the smoothness and accuracy of the transfer action. It includes the linear drive element 321, the sliding pair 322, and the bracket 323.

[0041] A linear drive unit 321 is mounted on the frame 1 along the second direction, providing linear power for transfer. It can be either an electric cylinder or a pneumatic cylinder. Its fixed end is connected to the crossbeam of the frame 1 via a mounting base, and its output end is rigidly connected to the bracket 323 via a coupling, ensuring efficient power transmission. The stroke of the linear drive unit 321 must cover the gap between the roller mechanism 2 and the conveyor belt 31, ensuring that the pallet 333 can reciprocate between them. A sliding pair 322 is disposed on the frame 1 along the second direction, providing guidance for the movement of the bracket 323. It adopts a linear guide rail slider assembly. The bracket 323 serves as an intermediate carrier connecting the drive assembly 32 and the lifting assembly 33. The top of the bracket has a mounting surface for the lifting assembly 33, and the bottom is connected to the slider of the sliding pair 322 and the output end of the linear drive unit 321. The structure of the bracket 323 meets torsional resistance requirements, preventing deformation due to load during transfer. When pallet 5 needs to be transferred, the output end of the linear drive 321 extends, driving the bracket 323 to move towards the conveyor belt 31 along the second direction. The sliding pair 322 guides the bracket 323 to move along a precise linear trajectory. When the bracket 323 reaches the preset position above the conveyor belt 31, the linear drive 321 stops. After the transfer is completed, the linear drive 321 retracts, driving the bracket 323 back to the side of the roller mechanism 2.

[0042] The lifting assembly 33 includes a linear bearing 331 and a telescopic drive component 332. One end of the linear bearing 331 is mounted on the bracket 323 and the other end is connected to the tray 333. The telescopic drive component 332 is mounted on the bracket 323 and its output end is connected to the tray 333. The linear bearing 331 serves as a guide element, with one end mounted on the top of the bracket 323 via a fixed seat and the other end connected to the bottom of the tray 333 via a connecting sleeve. To improve stability, two or four sets of linear bearings 331 are symmetrically arranged on both sides of the telescopic drive component 332 to distribute the weight of the tray 333 and the pallet 5, preventing tilting or jamming during lifting. The guiding accuracy of the linear bearings 331 directly determines the lifting trajectory of the tray 333, preventing the tray 5 from slipping due to offset. In this embodiment, the lifting assembly 33 and the tray 333 are also configured as two sets to prevent the tray 5 from tilting. When pallet 5 reaches the stop position of roller mechanism 2, the output end of telescopic drive 332 extends, driving pallet 333 to rise in the third direction. Linear bearing 331 guides pallet 333 through the roller gap until the top surface of pallet 333 is higher than the top surface of the roller, lifting pallet 5 away from the roller. When pallet 333 moves above conveyor belt 31, telescopic drive 332 retracts, driving pallet 333 to descend and placing pallet 5 on conveyor belt 31. Then pallet 333 continues to descend below the roller, waiting for the next action.

[0043] Limiting blocks 335 are connected to both ends of the pallet 333, and anti-slip textures 334 are formed on the surface of the pallet 333. The limiting blocks 335 restrict the movement of the tray 5 in the second direction, and the anti-slip textures 334 are formed on the surface of the pallet 333, using a diamond or stripe pattern to increase friction.

[0044] The stopping mechanism includes a stop bar 6, a first guide plate 7, and a second guide plate 4. The stop bar 6 is located at the output end of the roller mechanism 2 along a first direction. The first guide plate is located on both sides of the roller mechanism along a second direction, and the second guide plate is located on both sides of the conveyor belt. The stop bar 6, located at the output end of the roller mechanism 2 along the first direction, is made of a round tube and prevents the pallet 5 from continuing to move after it has reached its position on the roller. The first guide plate 7 and the second guide plate 4 are symmetrically arranged on both sides of the roller mechanism 2 along the second direction to prevent the pallet 5 from shifting laterally.

[0045] The frame 1 is equipped with a first sensor 8, which corresponds to the roller mechanism. When the pallet 5 enters the roller mechanism 2, the first sensor 8 detects the pallet 5, sends a signal to the control system, and starts the roller mechanism 2; when the pallet 5 reaches the position of the stop bar 6, the first sensor 8 detects that the pallet 5 is fully in place, sends a signal to the control system, stops the roller mechanism 2, and keeps the stop bar 6 in working state; when the pallet 333 lifts the pallet 5 away from the roller mechanism 2, the first sensor 8 detects that the pallet 5 has left, sends a signal to the control system, and restarts the roller mechanism 2 to transport the next pallet 5.

[0046] The conveyor belt 31 includes a belt frame, a synchronous belt, synchronous pulleys, and a drive unit. The synchronous pulleys are rotatably connected to both ends of the belt frame, the synchronous belt is wound around the synchronous pulleys, and the output end of the drive unit is connected to the synchronous pulleys. The synchronous pulleys, rotatably connected to both ends of the belt frame, are made of aluminum alloy and have teeth that match the synchronous belt, such as trapezoidal teeth. The synchronous pulleys are connected to the belt frame bearing seats via deep groove ball bearings to ensure that the axis is parallel to the second direction. The synchronous belt, wound around the synchronous pulleys, is made of polyurethane and has a toothed inner surface. The length of the synchronous belt must match the size of the belt frame. The drive unit is a geared motor, and its output shaft is connected to the synchronous pulley shaft via a coupling and installed at one end of the belt frame near the roller mechanism 2. When the transfer mechanism 3 places the pallet 5 on the synchronous belt, the geared motor starts and drives the synchronous pulley to rotate; the synchronous pulley drives the synchronous belt to move along the second direction through tooth meshing; the friction between the anti-slip texture 334 on the outer surface of the synchronous belt and the bottom of the pallet 5 drives the pallet 5 to move along the second direction, realizing cross-directional conveying; when the pallet 5 reaches the output end of the conveyor belt 31, it can be transferred to the designated workstation through the subsequent sorting mechanism.

[0047] The belt frame is equipped with a lifting cylinder, which is positioned along the movement path of the pallet 333. The output end of the lifting cylinder is connected to a baffle. When the pallet 333 of the transfer mechanism 3 moves the pallet 5 above the conveyor belt 31, the output end of the lifting cylinder extends, causing the baffle to rise to the working position. Subsequently, the lifting assembly 33 drives the pallet 333 to descend, placing the pallet 5 on the synchronous belt. At this time, one end of the pallet 5 contacts the baffle and is confined to the center of the conveyor belt 31. When the pallet 333 retracts to the side of the roller mechanism 2, the output end of the lifting cylinder retracts, causing the baffle to descend below the synchronous belt, releasing the stop. Finally, the drive unit is activated, and the synchronous belt moves the pallet 5 along the second direction.

[0048] A second sensor 9 is disposed between the bracket 323 and the frame 1. The second sensor 9 is configured as a position sensor. The second sensor 9 is selected as a photoelectric position sensor or a magnetic grating sensor. Installation method: The detection head is installed on the crossbeam of the frame 1, and the sensing element is installed on the side of the bracket 323. When the drive assembly 32 drives the bracket 323 to move towards the conveyor belt 31, the sensing element on the side of the bracket 323 approaches the detection head on the side of the conveyor belt 31, the second sensor 9 sends a signal to the control system, the drive assembly 32 stops, and the bracket 323 reaches the end position; when the transfer is completed, the drive assembly 32 drives the bracket 323 to retract, the sensing element approaches the detection head on the side of the roller mechanism 2, the second sensor 9 sends a signal to the control system, the drive assembly 32 stops, and the bracket 323 returns to the initial position.

[0049] The roller mechanism 2, transfer mechanism 3, and stop mechanism are each configured in two sets, with both sets spaced apart along a third direction on the frame 1. The upper roller mechanism 2 transports the upper pallet 5 along the first direction, the upper stop mechanism positions it, and the upper transfer mechanism 3 transfers the upper pallet 5 to the upper conveyor belt 31. The lower roller mechanism 2 transports the lower pallet 5, the lower stop mechanism positions it, and the lower transfer mechanism 3 transfers the lower pallet 5 to the lower conveyor belt 31. The two sets of components are independently controlled, allowing for single-layer or simultaneous double-layer operation as needed. The double-layer structure improves space utilization, independent control enhances flexibility, and the frame-type frame 1 ensures structural stability. This design is suitable for scenarios with limited workshop space but high conveying capacity requirements, effectively improving production efficiency.

[0050] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A dual tiered pallet conveyor, characterized by, include: Frame; A roller mechanism for conveying a pallet to be transferred along a first direction, comprising a plurality of rollers spaced apart and rotatably connected to a frame; A transfer mechanism includes: a conveyor belt, a drive assembly, a lifting assembly, and a pallet. The conveyor belt is disposed on one side of the output end of the roller mechanism along a second direction. The drive assembly is used to drive the lifting assembly to move between the roller mechanism and the conveyor belt along the second direction. The pallet is connected to the output end of the lifting assembly and can be driven to move along a third direction. The pallet is used to carry the pallet to be transferred and its width is smaller than the distance between adjacent rollers. The stop mechanism is respectively installed in the roller mechanism and the transfer mechanism and is used to stop the pallet to be transferred.

2. A dual deck pallet conveyor as claimed in claim 1 wherein: The drive assembly includes: a linear drive, a sliding pair, and a bracket. The sliding pair of the linear drive is disposed on the frame along the second direction. The bracket is connected to the output end of the linear drive and is movably connected to the frame through the sliding pair.

3. The double-layer pallet conveying device according to claim 1, characterized in that: The lifting assembly includes a linear bearing and a telescopic drive component. One end of the linear bearing is mounted on the bracket and the other end is connected to the support plate. The telescopic drive component is mounted on the bracket and its output end is connected to the support plate.

4. The double-layer pallet conveying device according to claim 1, characterized in that: Limiting blocks are connected to both ends of the tray, and anti-slip textures are formed on the surface of the tray.

5. A double-layer pallet conveying device according to claim 1, characterized in that: The stop mechanism includes a stop bar, a first guide plate, and a second guide plate. The stop bar is disposed at the output end of the roller mechanism along a first direction, the first guide plate is disposed on both sides of the roller mechanism along a second direction, and the second guide plate is disposed on both sides of the conveyor belt.

6. A double-layer pallet conveying device according to claim 1, characterized in that: The frame is equipped with a first sensor, which corresponds to the roller mechanism.

7. A dual deck pallet conveyor as claimed in claim 1, wherein: The conveyor belt includes: a belt frame, a synchronous belt, a synchronous pulley, and a drive unit. The synchronous pulley is rotatably connected to both ends of the belt frame, the synchronous belt is wound around the synchronous pulley, and the output end of the drive unit is connected to the synchronous pulley.

8. A double-layer pallet conveying device according to claim 7, characterized in that: The frame is equipped with a lifting cylinder, which is located on the movement path of the pallet, and the output end of the lifting cylinder is connected to a baffle.

9. A dual deck pallet conveyor as claimed in claim 2, wherein: A second sensor is provided between the support and the frame, and the second sensor is configured as a position sensor.

10. The dual deck pallet conveyor of claim 1, wherein: The roller mechanism, transfer mechanism, and stop mechanism are each configured in two groups, and the two groups of roller mechanism, transfer mechanism, and stop mechanism are spaced apart on the frame along a third direction.

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