Tray stacking and separating device

Abstract

The utility model provides a tray stack separating device which is used for separating at least one tray from a tray stack from bottom to top and comprises an upper limiter and a tray position sensor, and the tray position sensor is used for obtaining the vertical height of the at least one tray from the tray stack from bottom to top; and the upper stopper is configured to move in a vertical direction. According to the scheme, the height of at least one tray on the lower portion can be detected, the upper moving limit position of the fork arm can be adjusted according to the detected result, and therefore the fork arm can be moved to the accurate tray position.

Description

Technical Field

[0001] The present invention relates to packaging and transportation of products, and more particularly to the separation of pallet stacks. Background Art

[0002] In the packaging and transportation of products, pallets are a widely used tool that can be applied to the transportation of a variety of products. Usually, multiple pallets are stacked to form a stack to save space.

[0003] During production, a stack of multiple pallets can be placed on rollers by a forklift, and then the pallet at the bottom of the stack is separated by a pallet distribution mechanism. The distribution mechanism usually has a lifting member, such as a fork arm, which lifts the entire stack from the second pallet below so that only the bottom pallet stays on the rollers, and then the rollers transport the pallet to the loading position.

[0004] Although the existing mechanism can adapt to pallets of different heights, the upper and lower limits of the fork arm need to be adjusted manually, and the adjustment process requires the equipment to be powered off and locked, which is time-consuming and labor-intensive. If production is changed frequently on the same day, this operation is time-consuming and inefficient. Utility Model Content

[0005] The object of the present application is to provide a device for separating a stack of pallets, which can adaptively adjust the moving range of a fork arm according to the height of the pallet.

[0006] To this end, according to one aspect of the present application, a pallet stack separation device is used to separate at least one pallet from bottom to top in a pallet stack, including a pallet position sensor for obtaining the vertical height of at least one pallet from bottom to top in the pallet stack.

[0007] The pallet position sensor is a measuring grating, which is arranged on the side of the pallet stack along the stacking direction of the pallets. Further, the measuring grating is constructed with a size that covers at least one pallet from the bottom to the top of the pallet stack.

[0008] Furthermore, the tray stacking and separating device further comprises an upper limit stopper and an upper limit stopper driving mechanism, wherein the upper limit stopper is configured to move in a vertical direction under the action of the upper limit stopper driving mechanism.

[0009] Furthermore, the tray stack separation device further comprises a fork arm, which is configured to move vertically relative to the tray stack, wherein the vertical movement range of the fork arm is between the lower initial position of the fork arm and the upper limiter.

[0010] The solution provided in the present application can detect the height of at least one lower pallet, and can adjust the upper limit position of the vertical movement of the fork arm according to the detected result, so that the fork arm can be moved to the accurate pallet position. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of an embodiment of the present application.

[0012] Figure 2 for Figure 1 Another schematic diagram of the embodiment shown.

[0013] 10 tray stacking, 11 first tray, 12 second tray, 20 conveyor rollers

[0014] 100 tray stack separation device, 110 rack, 120 fork arm, 130 measuring grating, 132 first measuring component, 134 second measuring component DETAILED DESCRIPTION

[0015] The specific implementation of the present application is described below with reference to the accompanying drawings.

[0016] In this application, the term "vertical" or "perpendicular" refers to a direction perpendicular to the ground plane, the term "upper" refers to a higher position in the vertical direction, and the term "lower" or "bottom" refers to a lower position in the vertical direction. The term "height" refers to a dimension in the vertical direction, such as a relative or absolute distance.

[0017] Reference Figure 1 A pallet stacking and separating device 100 includes a frame 110 and a fork arm 120 mounted on the frame 110. The fork arm 120 can move vertically on the frame 110. Generally, a plurality of pallets form a pallet stack 10, which is denoted as a first pallet 11, a second pallet 12, and so on from bottom to top for ease of description.

[0018] The pallet stack 10 is placed on the conveyor roller 20. The pallet stack separation device 100 is adjacent to the conveyor roller 20 so that the fork arm 120 can be inserted between the pallets. The fork arm 120 moves upward from its lower initial position to a certain height, then inserts between the first pallet and the second pallet, and lifts the second pallet 12, thereby separating the first pallet 11 from the other pallets in the pallet stack 10. At this time, the first pallet 11 stays on the conveyor roller 20 and can be transported by the conveyor roller 20 to the loading position so as to load goods on the pallet.

[0019] An upper limiter (not shown) is provided on the frame 110 to limit the rising height of the fork arm 120, so that the fork arm 120 can be accurately inserted between the first pallet 11 and the second pallet 12. Therefore, the vertical movement range of the fork arm 120 is from the initial position below it to the height position defined by the upper limit position.

[0020] In practice, the heights of the various pallets are not consistent, that is, the dimensions in the vertical direction are not consistent, so it is necessary to adjust the rising height of the fork arm 120. The rising height of the fork arm 120 can be adjusted by adjusting the upper limiter in the vertical direction.

[0021] The upper limiter can move in the vertical direction under the action of the upper limiter driving mechanism. In one example, the upper limiter is arranged on a vertical guide rail and moves up and down under the drive of a stepper motor. In another example, the upper limiter can be fixed on a screw slider, and the slider drives the upper limiter to move up and down by rotating the screw.

[0022] In order to obtain and determine the height of the pallet, the pallet stack separation device includes a pallet position sensor, which can sense the vertical height of at least one pallet from bottom to top in the pallet stack 10, that is, the height of at least the first pallet 11. In some cases, when two or more pallets need to be separated, the pallet position sensor can also obtain the combined height of more pallets.

[0023] exist Figure 1 In the illustrated embodiment, the pallet position sensor is a measuring grating 130, which includes two measuring components, which are here referred to as a first measuring component 132 and a second measuring component 134. The two measuring components are arranged along the stacking direction of the pallets at opposite sides of the pallet stack, that is, arranged vertically. In addition, in one example, the size of the measuring grating 130, that is, the measuring range of the measuring grating covers at least one pallet from the bottom to the top of the pallet stack. In other examples, the measuring range of the measuring grating 130 can cover more pallets.

[0024] In other embodiments, the measuring grating only includes a single measuring component. The measuring component can be arranged along the stacking direction of the pallets, that is, arranged vertically. Moreover, the size of the measuring grating covers the height of at least one pallet.

[0025] In the above description, the details of the technical solution of the present application are explained. However, those skilled in the art will appreciate that the present application is not limited to the specific details listed in the above embodiments, but may vary within the scope defined by the claims.

Claims

1. A tray stacking separation device, used to separate at least one tray from bottom to top in a tray stack, characterized in that: It further includes a tray position sensor for obtaining the vertical height of at least one tray from bottom to top in the tray stack.

2. The tray stacking and separating device according to claim 1, characterized in that: The pallet position sensor is a measuring grating, which is arranged on the side of the pallet stack along the stacking direction of the pallets.

3. The tray stacking and separating device according to claim 2, characterized in that: The measuring grating is configured in such a way that its dimensions cover at least one pallet of the pallet stack from bottom to top.

4. The tray stacking and separating device according to claim 1, characterized in that: It further includes an upper limiter and an upper limiter driving mechanism, wherein the upper limiter is configured to move in a vertical direction under the action of the upper limiter driving mechanism.

5. The tray stacking and separating device according to claim 4, characterized in that: Further included is a fork arm configured to move vertically relative to the pallet stack.

6. The tray stacking and separating device according to claim 5, characterized in that: The vertical movement range of the fork arm is between the lower initial position of the fork arm and the upper limiter.

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