Double-station tray jacking device

Abstract

The utility model discloses a double-station tray jacking device which comprises a jacking frame, a first tray jacking disc and a second tray jacking disc, the first tray jacking disc and the second tray jacking disc are located on the jacking frame, a driving mechanism is arranged below the jacking frame, a guiding piece is arranged on one side of the driving mechanism, a guiding groove is formed in the guiding piece, a first pushing block is arranged below the first tray jacking disc, and a second pushing block is arranged below the second tray jacking disc. The first push block is provided with a sliding rod which is in sliding fit with the guide groove. The positioning device has a first state and a second state, in the first state, the sliding rod moves in the guide groove, and the first pushing block pushes the top tray of the first tray to move by a first distance; in the second state, the driving mechanism pushes the jacking frame so as to drive the first tray top tray and the second tray top tray to move by a second distance, trays at different intervals can be conveyed to the first tray top tray and the second tray top tray, and jacking operation can be conveniently conducted on the two trays at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of pallet conveying, in particular to a double-station pallet lifting device. Background Art

[0002] In the existing automated production line, workpiece transfer usually uses a pallet with a conveyor belt. The pallet is used to place the workpiece. The pallet is placed on a pair of conveyor belts and transported to the pallet by the conveyor belts. At the same time, a lifting device is also provided on the conveyor line to lift the pallet through the pallet top plate for operations such as line switching, loading and unloading, or pallet steering.

[0003] In some working conditions, a double-station pallet lifting device is required to lift two pallets at the same time. Since the distance between the pallet top plates of the two stations is fixed, it is impossible to ensure the distance between the front and rear pallets, so the two pallets cannot enter the two pallets at the same time. Based on the above technical problems, the prior art generally sets a blocking cylinder to block the workpiece that arrives on the pallet first, but this method will cause the workpiece to slide and rub against the conveyor belt; or use a double-speed chain to transfer the workpiece, but the double-speed chain has a complex structure and high cost.

[0004] Or before lifting, a special device for adjusting the distance between pallets is used, such as a double-speed chain conveyor line, to adjust the distance between every two pallets to the distance between the pallet top plates of the two stations. This increases the manufacturing and maintenance costs of the conveyor line. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a double-station pallet lifting device, which can transport pallets with different spacings to the pallet lifting structure, so as to facilitate the lifting operation of two pallets at the same time.

[0006] The utility model adopts the following technical solutions:

[0007] A double-station pallet lifting device comprises a lifting frame and a first pallet top plate and a second pallet top plate located on the lifting frame, a driving mechanism is provided below the lifting frame, a guide member is provided on one side of the driving mechanism, a guide groove is provided on the guide member, a first push block is provided below the first pallet top plate, and a slide rod slidably matched with the guide groove is provided on the first push block; the positioning device has a first state and a second state, in the first state, the slide rod moves in the guide groove, and the first push block pushes the first pallet top plate to move a first distance; in the second state, the driving mechanism pushes the lifting frame to drive the first pallet top plate and the second pallet top plate to move a second distance.

[0008] Preferably, the guide groove has at least one guide portion with two ends having different heights.

[0009] Preferably, the lower surface of the top plate of the first tray has a second push block that cooperates with the first push block.

[0010] Preferably, a guide block is provided on one side of the driving end of the driving mechanism, and a guide rod matching the guide block is provided at a corresponding position on the guide member.

[0011] Preferably, in the first state, the guide block drives the guide member to move horizontally.

[0012] Preferably, a limiting member for limiting the horizontal movement of the guide member is provided on the side of the guide member.

[0013] Preferably, the lifting frame is a hollow rectangular structure.

[0014] Preferably, it also includes a mounting plate for mounting the driving mechanism, wherein a linear bearing is provided on the mounting plate, and the linear bearing is slidably matched with a guide shaft.

[0015] Compared with the prior art, the utility model has the following advantages: the utility model provides a double-station pallet lifting device, including a lifting frame, a first pallet top plate, a second pallet top plate, a driving mechanism, and a guide member. The driving mechanism drives the guide member to lift the first pallet top plate so that the pallet on the first pallet top plate is disengaged from the conveying device. After the second pallet reaches the second pallet top plate, the driving mechanism lifts the first pallet top plate and the second pallet top plate by a certain distance at the same time through the lifting frame, so as to facilitate lifting the two pallets at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the positioning device.

[0017] Figure 2 Schematic diagram of the initial state of the positioning device.

[0018] Figure 3 This is a schematic diagram of a first state of the positioning device.

[0019] Figure 4 Schematic diagram of the second state of the positioning device.

[0020] Figure 5 It is a cross-sectional view of the top plate of the first tray.

[0021] Figure 6 It is a schematic diagram of the assembly of the driving mechanism and the guide member.

[0022] Figure 7 It is a structural schematic diagram of the jacking frame.

[0023] In the figure, there are a lifting frame 1, a lifting part 11, a first pallet top plate 2, a second push block 21, a second pallet top plate 3, a driving mechanism 4, a guide block 41, a guide member 5, a guide groove 51, a guide rod 52, a limit groove 53, a second roller 54, a first push block 6, a sliding rod 61, a first roller 62, a limit member 7, a limit rod 71, a linear bearing 8, and a guide shaft 9. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the technical solution of the utility model, a detailed description is given below in conjunction with the accompanying drawings and specific embodiments.

[0025] Example

[0026] like Figure 1 As shown, a double-station pallet lifting device includes a lifting frame 1 and a first pallet top plate 2 and a second pallet top plate 3 located on the lifting frame 1, the second pallet top plate 3 is fixedly connected to the lifting frame 1, and the first pallet top plate 2 is placed on the lifting frame 1 and can move relative to the lifting frame 1.

[0027] like Figure 5 As shown, a driving mechanism 4 (a cylinder is used as an example in this embodiment) is provided below the jacking frame 1, a guide member 5 is provided on one side of the driving mechanism 4, a guide groove 51 is provided on the guide member 5, a second push block 21 is provided on the lower surface of the first pallet top plate 2, a first push block 6 is provided below the first pallet top plate 2, a limiting frame is provided outside the second push block 21 and the first push block 6, a slide bar 61 that is slidably matched with the guide groove 51 is provided on the first push block 6; in order to reduce the friction between the slide bar 61 and the guide groove 51, a first roller 62 is provided outside the slide bar 61, and the first roller 62 is rollingly matched in the guide groove 51.

[0028] The positioning device has a first state and a second state. In the first state, the sliding rod 61 moves in the guide groove 51, and the first push block 6 pushes the first pallet top plate 2 to move a first distance; in the second state, the driving mechanism 4 pushes the lifting frame 1 to drive the first pallet top plate 2 and the second pallet top plate 3 to move a second distance.

[0029] like Figure 2-4As shown, in the initial state, the driving end of the driving mechanism 4 is not in contact with the lifting frame 1, and there is a certain distance between them; when the pallet moves to the corresponding position on the top plate 2 of the first pallet through the conveying device (the conveyor belt is used as an example in this embodiment), the driving end of the driving mechanism 4 extends upward (does not contact the lifting frame 1 or contacts the lifting frame 1 but has no interaction force), pushes the guide member 5 to move horizontally, and pushes the first push block 6 to move upward by a certain distance through the cooperation of the slide bar 61 and the guide groove 51, thereby pushing the top plate 2 of the first pallet to move upward by a first distance through the second push block 21, so that the pallet on the top plate 2 of the first pallet is separated from the conveyor belt, and the positioning device is in the first state at this time; thereafter, when the next pallet moves to the top plate 3 of the second pallet, the driving end of the driving mechanism 4 continues to extend upward, pushes the lifting frame 1 to move upward, and drives the top plate 3 of the second pallet to move upward. When the top plate 3 of the second pallet is at the same height as the top plate 2 of the first pallet, the lifting frame 1 drives the top plate 2 of the first pallet and the top plate 3 of the second pallet to rise by a second distance at the same time, and the second push block 21 is separated from the cooperation with the first push block 6, and the positioning device is in the second state at this time. Afterwards, the unloading device lifts the two pallets simultaneously, the driving end of the driving mechanism 4 retracts, and the top plate 2 of the first pallet and the top plate 3 of the second pallet are reset.

[0030] The first distance is smaller than the second distance. In fact, in the first state, the purpose of the top plate 2 of the first pallet moving upward is to make the pallet out of contact with the conveyor belt. The first distance can be 3-5 cm or other lengths. For example, in the first state, the top plate 2 of the first pallet moves upward by 3 cm. In the first state, the top plate 2 of the first pallet and the top plate 3 of the second pallet rise by 10 cm at the same time.

[0031] The guide groove 51 has at least one guide portion with different heights at both ends. In this embodiment, the guide groove 51 is an obliquely arranged through groove structure, and the slide rod 61 moves from one end to the other end in the guide groove 51, so that the first push block 6 moves upward by a certain distance.

[0032] In addition, the guide groove 51 may be a Z-shaped structure, wherein the guide portion is an oblique through groove between two upper and lower parallel portions; or the guide groove 51 may be an arc-shaped groove. In fact, the structure of the guide groove 51 is not fixed, as long as the slide bar 61 slides in the guide groove 51, the first push block 6 can move upward.

[0033] like Figure 6As shown, a guide block 41 is provided on one side of the driving end of the driving mechanism 4, and a guide rod 52 matching the guide block 41 is provided at a corresponding position on the guide member 5. When the driving end of the driving mechanism 4 extends upward, the guide rod 52 moves along the surface of the guide block 41, so that the guide member 5 moves horizontally. Specifically, one side of the guide block 41 is an arc surface. When the driving end of the driving mechanism 4 extends upward, the guide rod 52 moves along the arc surface of the guide block 41. In addition, a limiter 7 is provided on the side of the guide member 5 to limit the horizontal movement of the guide member 5. The limiter 7 includes a base and a limiter rod 71 located on the base. A limiter groove 53 matching the limiter rod 71 is provided on the guide member 5. Therefore, when the driving end of the driving mechanism 4 extends upward, the guide member 5 can be driven to move horizontally. In order to reduce the friction between the guide rod 52 and the guide block 41, a second roller 54 is provided on the guide rod 52. The second roller 54 is in rolling cooperation with the guide block 41 bracket. In addition, the end surface of the guide block 41 has a slope structure, and the slope of the guide block 41 rolls with the second roller 54 to improve the stability of the movement of the guide member 5 and the driving mechanism 4.

[0034] like Figure 7 As shown, in this embodiment, the lifting frame 1 is a hollow rectangular structure with a lifting portion 11 in the middle, and a lifting block that cooperates with the driving end of the driving mechanism 4 is provided below the lifting portion 11. The driving end of the driving mechanism 4 extends out through the lifting block to push the lifting frame 1 upward.

[0035] In addition, the driving mechanism 4 and the limit member 7 are installed on the mounting plate, and a linear bearing 8 is provided on the mounting plate. The linear bearing 8 is slidably matched with a guide shaft 9, and one end of the guide shaft 9 is connected to the lifting frame 1. The mounting plate is fixedly arranged. Therefore, when the driving mechanism 4 pushes the lifting frame 1 to move, the guide shaft 9 slides and fits in the linear bearing 8, thereby guiding the upward movement of the first pallet top plate 2 and the second pallet top plate 3.

[0036] The utility model can be used in conjunction with a double-row belt conveyor line, a blocking cylinder and a photoelectric sensor. The utility model is arranged between the double-row belt conveyor lines. The blocking cylinder is attached to the inner side of one belt. The first pallet top plate 2 and the second pallet top plate 3 are each provided with a set of blocking cylinders and in-place switches. The blocking cylinder is extended to quickly stop the pallet, and the photoelectric sensor is used to monitor the pallet in place. The specific settings of the blocking cylinder and the in-place switch and the linkage control method of the drive mechanism 4 belong to the prior art and will not be repeated here.

[0037] The above are only preferred embodiments of the present invention. The protection scope of the present invention shall be based on the scope defined by the claims. Several improvements and modifications made by those skilled in the art without departing from the spirit and scope of the present invention shall also be regarded as the protection scope of the present invention.

Claims

1. A double-station pallet lifting device, characterized in that: The invention comprises a lifting frame (1) and a first tray top plate (2) and a second tray top plate (3) located on the lifting frame (1); a driving mechanism (4) is provided below the lifting frame (1); a guide member (5) is provided on one side of the driving mechanism (4); a guide groove (51) is provided on the guide member (5); a first push block (6) is provided below the first tray top plate (2); a slide bar (61) is provided on the first push block (6) and is slidably matched with the guide groove (51); the lifting device has a first state and a second state; in the first state, the slide bar (61) moves in the guide groove (51), and the first push block (6) pushes the first tray top plate (2) to move a first distance; in the second state, the driving mechanism (4) pushes the lifting frame (1) to drive the first tray top plate (2) and the second tray top plate (3) to move a second distance.

2. A double-station pallet lifting device according to claim 1, characterized in that: The guide groove (51) has at least one guide portion with two ends having different heights.

3. A double-station pallet lifting device according to claim 1, characterized in that: The lower surface of the first tray top plate (2) is provided with a second push block (21) that cooperates with the first push block (6).

4. A double-station pallet lifting device according to claim 1, characterized in that: A guide block (41) is provided on one side of the driving end of the driving mechanism (4), and a guide rod (52) matching the guide block (41) is provided at a corresponding position on the guide member (5).

5. A double-station pallet lifting device according to claim 4, characterized in that: In the first state, the guide block (41) drives the guide member (5) to move horizontally.

6. The double-station pallet lifting device according to claim 1, characterized in that: A limiting member (7) for limiting the horizontal movement of the guide member (5) is provided on the side surface of the guide member (5).

7. The double-station pallet lifting device according to claim 1, characterized in that: The lifting frame (1) is a hollow rectangular structure.

8. The double-station pallet lifting device according to claim 1, characterized in that: It also includes a mounting plate for mounting the driving mechanism (4), wherein a linear bearing (8) is provided on the mounting plate, and the linear bearing (8) is slidably matched with a guide shaft (9).

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