Unstacker

Abstract

The utility model belongs to the technical field of unstacking, and particularly relates to an unstacker which comprises a main machine frame, a lifting mechanism and a taking and placing mechanism are arranged on the main machine frame, the lifting mechanism comprises a motor fixedly installed on the main machine frame, a first chain wheel is fixedly arranged on an output shaft of the motor, and a rotating shaft is rotationally connected to the main machine frame and located below the motor. The two ends of the rotating shaft are perpendicularly and fixedly connected with first connecting rods, the other ends of the first connecting rods are rotationally connected with second connecting rods, the other ends of the second connecting rods are connected with the pick-and-place mechanism through steel wire ropes, and the motor drives the pick-and-place mechanism to move up and down in a reciprocating mode. The first connecting rod and the second connecting rod hinged to the first connecting rod are fixedly arranged on the rotating shaft, so that the movement precision of the lifting mechanism is improved, and a second baffle in the taking and placing mechanism can be accurately inserted into an insertion hole of the tray to meet the production and use requirements.

Description

Technical Field

[0001] The utility model belongs to the technical field of depalletizing, and in particular relates to a depalletizing machine. Background Art

[0002] Pallets are used in industrial production to stack goods for easy transportation and packaging. Traditionally, stacked pallets have been separated manually or by forklift, a labor-intensive process that can be difficult to ensure consistent placement. Depalletizers can work in conjunction with conveyor lines, automatically depalletizing according to pre-set rules based on the needs of different work scenarios.

[0003] At present, a variety of devices for depalletizing have been proposed in the prior art. For example, a depalletizing machine for a stacking machine proposed in the utility model patent with authorization announcement number CN 214030891U includes a base, and the rear ends of both sides of the top of the base are fixedly installed with a frame, and the inner side of the guide wheel group is fixedly installed with a guide wheel group, and the inner side of the guide wheel group is fixedly installed with a plate body, and the inner side of the plate body is fixedly installed with a guide shaft, and the two sides of the front side of the guide shaft are fixedly installed with a fixed seat, and a sliding rod is fixedly installed on the outer side of the fixed seat, and a clamping arm is slidably sleeved on the surface of the slide rod, and a cylinder is fixedly installed on the surface of the guide shaft and located on the inner side of the fixed seat, and the telescopic end of the cylinder is fixedly installed on the inner side of the clamping arm, and a force arm is fixedly installed on the bottom of the front side of the clamping arm, and a motor is fixedly installed on the top of one side of the frame, and the output shaft of the motor is connected to the lifting spindle, and the lifting spindle is connected to the driving sprocket through a first chain transmission, and the driving sprocket is fixedly installed to the outer side of the plate body.

[0004] However, the lifting spindle in the device is controlled by a sprocket chain mechanism to move up and down. During use, the chain is prone to becoming longer and loose, which will lead to the deterioration of the movement accuracy of the lifting spindle, and the insertion plate will not be able to accurately lift the pallet, thereby reducing production efficiency. Utility Model Content

[0005] The purpose of the present invention is to provide a depalletizing machine to solve the technical problems raised in the above background technology.

[0006] In order to achieve the above technical objectives, the technical solution of the utility model is:

[0007] A destacker includes a main frame, which is provided with a lifting mechanism and a pick-and-place mechanism. The lifting mechanism includes a motor fixedly mounted on the main frame, a first sprocket fixedly provided on the output shaft of the motor, a rotating shaft rotatably connected to the main frame, the rotating shaft is located below the motor, a second sprocket fixedly provided on the rotating shaft, the first sprocket and the second sprocket are connected by a chain, both ends of the rotating shaft are vertically fixedly connected to a first connecting rod, the other end of the first connecting rod is rotatably connected to the second connecting rod, the other end of the second connecting rod is connected to the pick-and-place mechanism by a steel wire rope, and when the motor rotates, it drives the pick-and-place mechanism to move back and forth up and down.

[0008] As a further improvement, the picking and placing mechanism includes a mounting frame and a front fork arm. The mounting frame includes a first crossbeam and a second crossbeam arranged in parallel. Both ends of the first crossbeam and the second crossbeam are fixedly connected by side plates. A guide rod is fixed in parallel on the first crossbeam, and both ends of the guide rod are slidably connected to the front fork arm.

[0009] As a further improvement, a pair of cylinders with opposite telescopic directions are hingedly connected to the mounting frame, the telescopic ends of the cylinders are hingedly connected to the front fork arms, and the other ends of the cylinders are hingedly connected to the first crossbeam.

[0010] As a further improvement, first rollers are provided on both side plates, and the outer circumferential surfaces of the first rollers abut against the vertical frame surfaces of the main frame.

[0011] As a further improvement, the front fork arm includes a vertically arranged first arm and a second arm vertically fixedly connected to the first arm. One end of the first arm is slidably connected to the guide rod, and the other end of the first arm is provided with a horizontally rotating second roller, and the outer circumferential surface of the second roller is against the surface of the second beam.

[0012] As a further improvement, the extension direction of the second arm is perpendicular to the plane where the mounting frame is located, and the second arm is detachably connected to a limiting block, which includes a vertical first baffle and a second baffle arranged perpendicular to the first baffle.

[0013] Due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0014] By fixing a first connecting rod on a rotating shaft fixedly connected to the motor output shaft, and a second connecting rod hinged to the first connecting rod, the movement accuracy of the lifting mechanism is improved, and the second baffle in the pick-and-place mechanism can be accurately inserted into the socket of the pallet to meet production use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the lifting mechanism of the utility model;

[0017] Figure 3 It is a schematic diagram of the pick-and-place mechanism of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the front fork arm of the utility model.

[0019] Among them: 1-main frame, 2-lifting mechanism, 201-motor, 202-first sprocket, 203-rotating shaft, 204-second sprocket, 205-chain, 206-first connecting rod, 207-second connecting rod, 208-wire rope, 3-pick-and-place mechanism, 301-mounting frame, 3011-first crossbeam, 3012-second crossbeam, 3013-side plate, 302-guide rod, 303-front fork arm, 3031-first support arm, 3032-second support arm, 3033-second roller, 304-cylinder, 305-first roller, 306-limiting block, 3061-first baffle, 3062-second baffle. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are schematic, not physical, representations. They should not be construed as limiting the present invention. To better illustrate the embodiments of the present invention, some components in the accompanying drawings may be omitted, enlarged, or reduced, and do not represent the dimensions of the actual product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted from the accompanying drawings.

[0021] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "up", "down", "left", "right", etc. indicate directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0022] like Figure 1-4As shown, a depalletizer includes a main frame 1, on which a lifting mechanism 2 and a pick-and-place mechanism 3 are provided. The lifting mechanism 2 includes a motor 201 fixedly mounted on the main frame 1, a first sprocket 202 fixedly provided on the output shaft of the motor 201, a rotating shaft 203 rotatably connected to the main frame 1, the rotating shaft 203 is located below the motor 201, a second sprocket 204 is fixedly provided on the rotating shaft 203, the first sprocket 202 and the second sprocket 204 are connected by a chain 205, both ends of the rotating shaft 203 are vertically fixedly connected to a first connecting rod 206, the other end of the first connecting rod 206 is rotatably connected to the second connecting rod 207, the other end of the second connecting rod 207 is connected to the pick-and-place mechanism 3 by a wire rope 208, and when the motor 201 rotates, it drives the pick-and-place mechanism 3 to move back and forth up and down.

[0023] In this embodiment, the picking and placing mechanism 3 includes a mounting frame 301 and a front fork arm 303. The mounting frame 301 includes a first beam 3011 and a second beam 3012 arranged in parallel. Both ends of the first beam 3011 and the second beam 3012 are fixedly connected by a side plate 3013. A guide rod 302 is fixedly provided in parallel on the first beam 3011, and both ends of the guide rod 302 are slidably connected to the front fork arm 303.

[0024] In this embodiment, a pair of cylinders 304 with opposite telescopic directions are hingedly connected to the mounting frame 301. The telescopic end of the cylinder 304 is hingedly connected to the front fork arm 303, and the other end of the cylinder 304 is hingedly connected to the first crossbeam 3011. The telescopic movement of the two cylinders 304 drives the two front fork arms 303 to move closer to or away from each other.

[0025] In this embodiment, first rollers 305 are provided on both side plates 3013 , and the outer circumference of the first rollers 305 abuts against the vertical frame surface of the main frame 1 . When the mounting frame 301 moves up and down, the first rollers 305 can reduce the friction between the mounting frame 301 and the main frame 1 .

[0026] In this embodiment, the front fork arm 303 includes a vertically arranged first arm 3031 and a second arm 3032 vertically fixedly connected to the first arm 3031. One end of the first arm 3031 is slidingly connected to the guide rod 302, and the other end of the first arm 3031 is provided with a horizontally rotating second roller 3033. The outer circumferential surface of the second roller 3033 is abutted against the surface of the second crossbeam 3012. The second roller 3033 can reduce the friction between the front fork arm 303 and the second crossbeam 3012.

[0027] In this embodiment, the extension direction of the second support arm 3032 is perpendicular to the plane where the mounting frame 301 is located. The limiting block 306 is detachably connected to the second support arm 3032. Specifically, it can be fastened by bolts and nuts. By adjusting the installation position of the limiting block 306 on the second support arm, the destacking requirements of pallets of different sizes can be met. The limiting block 306 includes a vertical first baffle 3061 and a second baffle arranged perpendicular to the first baffle 3061. In actual use, the first baffle 3061 is against the side wall of the pallet, and the second baffle 3062 is inserted into the socket of the pallet.

[0028] When the present embodiment is in use, it needs to work in conjunction with the conveyor line. The forklift puts the neatly stacked pallet onto the conveyor line. When the sensor on the conveyor line detects that the pallet has moved to the corresponding position of the depalletizer, the conveyor line stops moving. At this time, the second baffle 3062 corresponds to the position of the insertion hole of the second layer of pallet at the bottom. The cylinder 304 drives the two front fork arms 303 to move closer to each other and insert the second baffle 3062 into the insertion hole of the pallet. The motor 201 drives the rotating shaft 203 to rotate a certain angle through the chain 205, thereby causing the pick-and-place mechanism 3 to drive the pallets of the second layer and above at the bottom to rise to the highest point and separate from the pallet at the bottom. The conveyor line is started again, and the pallet on it can be transported to the corresponding process in the subsequent section; the motor 201 rotates again, and after the pick-and-place mechanism 3 drives the pallet to descend to the conveyor line, the second baffle 3062 is inserted into the insertion hole of the second layer of pallet at the bottom again, and the previous step is repeated to continuously destacker the stacked pallets.

[0029] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A depalletizer, comprising a main frame, characterized in that: The main frame is provided with a lifting mechanism and a pick-and-place mechanism, the lifting mechanism includes a motor fixedly mounted on the main frame, a first sprocket is fixedly provided on the output shaft of the motor, the main frame is rotatably connected with a rotating shaft, the rotating shaft is located below the motor, a second sprocket is fixedly provided on the rotating shaft, the first sprocket and the second sprocket are connected by a chain, both ends of the rotating shaft are vertically fixedly connected with a first connecting rod, the other end of the first connecting rod is rotatably connected with the second connecting rod, and the other end of the second connecting rod is connected to the pick-and-place mechanism by a steel wire rope.

2. A depalletizer according to claim 1, characterized in that: The pick-and-place mechanism includes a mounting frame and a front fork arm. The mounting frame includes a first crossbeam and a second crossbeam arranged in parallel. Both ends of the first crossbeam and the second crossbeam are fixedly connected by side plates. A guide rod is fixedly provided in parallel on the first crossbeam, and both ends of the guide rod are slidably connected to the front fork arm.

3. A depalletizer according to claim 2, characterized in that: A pair of cylinders with opposite telescopic directions are hingedly connected to the mounting frame, the telescopic ends of the cylinders are hingedly connected to the front fork arms, and the other ends of the cylinders are hingedly connected to the first crossbeam.

4. A depalletizer according to claim 2, characterized in that: The two side plates are each provided with a first roller, and the outer circumferential surface of the first roller abuts against the vertical frame surface of the main frame.

5. A depalletizer according to claim 2, characterized in that: The front fork arm includes a vertically arranged first arm and a second arm fixedly connected to the first arm vertically. One end of the first arm is slidably connected to the guide rod, and the other end of the first arm is provided with a horizontally rotating second roller, and the outer circumferential surface of the second roller is against the surface of the second beam.

6. A depalletizer according to claim 5, characterized in that: The extension direction of the second arm is perpendicular to the plane where the mounting bracket is located. The second arm is detachably connected to a limiting block, and the limiting block includes a vertical first baffle and a second baffle arranged perpendicular to the first baffle.

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