Tray taking mechanism and tray transferring system

Abstract

The utility model discloses a tray taking mechanism and a tray transfer system, which comprises a screw rod lifting unit, a telescopic suction nozzle and a separation suction nozzle, and is characterized in that the screw rod lifting unit is configured to be capable of pausing at a leveling position between a lower stop position and an upper stop position; the telescopic suction nozzle is arranged below the lead screw lifting unit and connected with the lead screw lifting unit, and the telescopic suction nozzle is used for adsorbing stacked target pieces; the separating air cylinders are arranged on the two sides of the target pieces respectively, the sides, close to the target pieces, of the separating air cylinders are connected with spacers, and the spacers are configured to separate the target piece on the uppermost layer from the target piece on the next layer at the leveling position. According to the tray taking mechanism, by adding the leveling step, a tilted or staggered tray can be leveled, so that the separation success rate and the production efficiency are improved; and the lifting height can be accurately controlled, different leveling heights can be freely set according to trays with different thicknesses, and the universality is good.

Description

Technical Field

[0001] The utility model relates to the field of automation technology, in particular to a pallet taking mechanism and a pallet transfer system. Background Art

[0002] During LCD and OLED production, a large number of pallets are required for loading and unloading. After the product loading is completed, the empty pallet is removed by the pallet removal mechanism.

[0003] As attached Figure 1 As shown, in the existing pallet retrieval mechanism, the lifting cylinder drives the suction nozzle to sink to the end surface of the top pallet and vacuum it, and then the separation cylinder controls the baffle to be inserted between the top pallet and the next pallet, and finally the lifting cylinder retracts to drive the top pallet to separate from the next pallet and enter the next process.

[0004] However, in the actual production process, due to the uneven structure of the pallet itself or the irregular stacking of the pallets, the pallets may be misplaced or tilted. Figure 2 As shown, when the pallet is in a tilted state, the baffles of the separation cylinders on both sides cannot be accurately inserted between the top pallet and the pallet on the next layer. The top pallet is very likely to trigger a vacuum alarm due to the baffle being stuck, resulting in failure of pallet suction and affecting production efficiency.

[0005] Manually checking for misalignment or tilting of pallets before loading can prevent problems to a certain extent, but it is time-consuming and labor-intensive and cannot completely eliminate any abnormalities. Therefore, ensuring the smooth transfer of empty pallets has become an urgent problem in the industry. Utility Model Content

[0006] The purpose of the utility model is to provide a pallet taking mechanism and a pallet transfer system, which optimizes the lifting path of the existing pallet taking mechanism and adds a pallet leveling action so that the pallets can be effectively separated, thereby improving production efficiency.

[0007] The purpose of this utility model is achieved by the following technical solutions:

[0008] A tray taking mechanism, comprising:

[0009] a screw lifting unit configured to be able to pause at a leveling position between a lower stop position and an upper stop position;

[0010] a telescopic suction nozzle, disposed below and connected to the screw lifting unit, the telescopic suction nozzle being used to suck the stacked target parts;

[0011] The separation cylinders are disposed on both sides of the target part. A spacer is connected to the side of the separation cylinder close to the target part. The spacer is configured to separate the uppermost target part from the next target part in the leveling position.

[0012] In some embodiments, the leveling position is 10 mm to 20 mm higher than the uppermost target part.

[0013] In some embodiments, the screw lifting unit includes:

[0014] Motor;

[0015] A screw rod is vertically arranged below the motor and connected to the motor via a coupling;

[0016] A slider is threadedly connected to the lead screw, and the slider is connected to a first support frame for mounting the telescopic suction nozzle.

[0017] In some embodiments, there are at least two telescopic suction nozzles, which are distributed side by side on the first support frame.

[0018] In some embodiments, a distance measuring sensor is provided on the first support frame for detecting the real-time height of the telescopic suction nozzle.

[0019] In some embodiments, a blowing nozzle is provided on the first support frame for removing impurities on the surface of the target part.

[0020] In some embodiments, the separation cylinder is disposed on a second support frame, and the height of the second support frame is adjustable.

[0021] In some embodiments, the telescopic nozzle is a magnetic telescopic nozzle.

[0022] In some embodiments, the separation cylinder is a magnetic separation cylinder.

[0023] A pallet transfer system includes the pallet taking mechanism described above.

[0024] Compared with the prior art, the beneficial effects of the present invention include at least:

[0025] 1. By adding a leveling step, the tilted or misaligned pallets can be leveled, thereby improving the separation success rate and production efficiency.

[0026] 2. The lifting height can be precisely controlled, and different leveling heights can be freely set for pallets of different thicknesses, with good versatility.

[0027] 3. The telescopic nozzle and separation cylinder are installed in a magnetic way, which is convenient for adjusting the position. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural diagram of an existing pallet taking mechanism.

[0029] Figure 2 This is a schematic diagram of the state of the existing tray removal mechanism when it adsorbs and lifts the tray.

[0030] Figure 3 It is a structural schematic diagram of the tray taking mechanism of the present utility model.

[0031] Figure 4 This is a schematic diagram of the tray-taking mechanism of the present invention when the tray is sucked and lifted.

[0032] Figure 5 It is a schematic diagram of the state of the tray taking mechanism of the present invention after the tray is leveled and tilted.

[0033] In the figure: 1. Screw lifting unit; 11. Motor; 12. Screw; 13. Slider; 14. First support frame; 15. Coupling; 2. Telescopic suction nozzle; 3. Separation cylinder; 4. Spacer; 5. Target part; 6. Distance sensor; 7. Blowing nozzle; 8. Second support frame. DETAILED DESCRIPTION

[0034] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make this disclosure more comprehensive and complete and to fully convey the concepts of the example embodiments to those skilled in the art. Identical reference numerals in the figures denote identical or similar structures, and thus repeated descriptions thereof will be omitted.

[0035] The words expressing positions and directions described in this utility model are all explained with reference to the accompanying drawings as examples, but they can be changed as needed, and all such changes are included in the protection scope of this utility model.

[0036] See also Figures 3 to 5 As shown, the utility model discloses a pallet taking mechanism, which includes a screw lifting unit 1, a telescopic suction nozzle 2 and a separation cylinder 3.

[0037] Among them, the telescopic suction nozzle 2 is arranged below the screw lifting unit 1 and connected thereto. The telescopic suction nozzle 2 can be a telescopic vacuum suction nozzle, which has the ability to telescope vertically and is used to adsorb the stacked target part 5. For example, the target part 5 can be an empty pallet.

[0038] The screw lifting unit 1 is used to control the lifting and lowering of the telescopic suction nozzle 2, and plays the role of transporting and separating the target part 5. In addition, the screw lifting unit 1 is also configured to be able to pause at the leveling position between the lower stop position and the upper stop position to cooperate with the telescopic suction nozzle 2 and the separation cylinder 3 to perform leveling operations on the target part 5.

[0039] For example, the screw lifting unit 1 in the present application includes a motor 11, a screw 12, and a slider 13. The screw 12 is vertically arranged below the motor 11 and connected to it through a coupling 15. The slider 13 is threadedly connected to the screw 12, and the slider 13 is connected to a first support frame 14 for mounting the telescopic nozzle 2. By controlling the forward and reverse rotation of the motor 11, the screw 12 can drive the first support frame 14 to rise or fall through the slider 13.

[0040] Separation cylinders 3 are positioned on either side of the target component 5, with spacers 4 attached to the side closest to the target component 5. These spacers 4 are configured to separate the topmost target component 5 from the next layer of target components 5 at the leveling position. In this application, the spacers 4 are adjusted from their original height, where they were level with the topmost target component 5, to the leveling position. After the target components 5 have adaptively leveled, they are then used to separate any adhering target components 5, thereby preventing the topmost target component 5 from being stuck and ensuring the orderly and reliable separation of the stacked target components 5.

[0041] The following describes the working process of the pallet removal mechanism of the present application in detail, taking the pallet as the target part 5:

[0042] Step S1: The screw lifting unit 1 controls the telescopic suction nozzle 2 to descend to the lower stop position, and the telescopic suction nozzle 2 vacuums and absorbs the uppermost tray;

[0043] Step S2: The telescopic suction nozzle 2 sucks the pallet and rises it to a leveling position. For example, it can rise 10 mm from the lower stop position (the specific position can be freely set according to the actual situation of the pallet). During this period, if the pallet is tilted, it can be automatically leveled by the telescopic suction nozzle 2 in the vertical extension compensation under the action of gravity.

[0044] Step S3: The separation cylinder 3 extends to drive the spacer 4 to be inserted between the uppermost tray and the tray of the next layer;

[0045] Step S3: the screw lifting unit 1 controls the telescopic suction nozzle 2 to rise to the upper stop position, thereby recovering the uppermost tray and completing a tray retrieval action.

[0046] During the above process, compared to the prior art method of using a cylinder to control lifting (switching only between the lower and upper stop positions), the screw lifting unit 1 of the present application can control the telescopic suction nozzle 2 to pause at the intermediate position, that is, the leveling position. By adding a leveling position and cooperating with the telescopic suction nozzle 2, an automatic leveling function can be achieved, solving the separation and fixation problems caused by warping or misalignment, and ensuring that the target part 5 can be effectively separated. In addition, the screw lifting unit 1 has higher lifting accuracy and better operability. Different leveling heights can also be freely set in the system software (not shown) for pallets of different thicknesses, which enhances compatibility.

[0047] In some embodiments, the leveling position is 10mm-20mm higher than the top target part 5. If the leveling position is lower than the top target part 510mm, the space required for leveling is limited, and the target part 5 may not be fully leveled, and may still be tilted / misaligned; if the leveling position is higher than the top target part 520mm, the target part 5 of the next layer will be difficult to accurately fall back during the separation process, affecting the next separation. Therefore, when the leveling position is 10mm-20mm higher than the top target part 5, preferably 12mm-16mm, this position height satisfies the leveling requirements while making the target part 5 of the next layer as close as possible to the remaining stacked target parts 5, resulting in a better separation effect.

[0048] In some embodiments, there are at least two telescopic suction nozzles 2 , which are distributed side by side on the first support frame 14 , so as to ensure stability and adsorption strength when the target part 5 is separated.

[0049] In some embodiments, the screw lifting unit 1 further includes a guide unit (not shown) arranged vertically, which can be connected to the slider 13 or the first support frame 14 to guide the telescopic nozzle 2 to rise and fall stably.

[0050] In some embodiments, a distance measuring sensor 6 is provided on the first support frame 14 for detecting the real-time height of the telescopic suction nozzle 2. The distance measuring sensor 6 can feed back a signal to the system software to control the telescopic suction nozzle 2 and the separation cylinder 3 to perform corresponding actions.

[0051] In some embodiments, a blowing nozzle 7 is provided on the first support frame 14 for removing impurities on the surface of the target part 5 to avoid affecting the adsorption performance of the telescopic suction nozzle 2 and improve the reliability of the transfer action.

[0052] In some embodiments, the separation cylinder 3 is arranged on the second support frame 8, and the height of the second support frame 8 is adjustable, so that the height position of the spacer 4 can also change, so as to match the changes in the leveling positions required for different target parts 5, and is suitable for the mutual separation of target parts 5 of different sizes.

[0053] In some embodiments, the telescopic suction nozzle 2 is a magnetic telescopic suction nozzle, which is fixed by magnetic attraction. The operator can quickly adjust the position of the telescopic suction nozzle 2 on the first support frame 14 to adapt to different target parts 5, thereby improving the convenience of operation.

[0054] Likewise, the separation cylinder 3 is a magnetic separation cylinder so that its position can be quickly adjusted on the second bracket.

[0055] The utility model also discloses a pallet transfer system, including the above-mentioned pallet picking mechanism, which enables the pallet transfer system to have the functions of pallet leveling and separation, can effectively solve the separation failure problem caused by pallet tilting / misalignment, improve transfer efficiency, and is compatible with pallets of different thicknesses.

[0056] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limiting the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the utility model without departing from the principles and purpose of the utility model. All of these changes should fall within the scope of protection of the claims of the present invention.

Claims

1. A tray removal mechanism, characterized in that: include: A screw lifting unit (1) configured to be able to pause at a leveling position between a lower stop position and an upper stop position; a telescopic suction nozzle (2), arranged below the screw lifting unit (1) and connected thereto, the telescopic suction nozzle (2) being used for sucking the stacked target parts (5); The separation cylinder (3) is disposed on both sides of the target part (5). A spacer (4) is connected to the side of the separation cylinder (3) close to the target part (5). The spacer (4) is configured to separate the uppermost target part (5) from the target part (5) of the next layer in the leveling position.

2. The tray taking mechanism according to claim 1, characterized in that: The leveling position is 10 mm to 20 mm higher than the uppermost target part (5).

3. The tray taking mechanism according to claim 1, characterized in that: The screw lifting unit (1) comprises: Motor (11); A screw rod (12) is vertically arranged below the motor (11) and connected thereto via a coupling (15); A slider (13) is threadedly connected to the screw rod (12), and the slider (13) is connected to a first support frame (14) for mounting the telescopic suction nozzle (2).

4. The tray taking mechanism according to claim 3, characterized in that: There are at least two telescopic suction nozzles (2), which are distributed side by side on the first support frame (14).

5. The tray taking mechanism according to claim 3, characterized in that: A distance measuring sensor (6) is provided on the first support frame (14) for detecting the real-time height of the telescopic suction nozzle (2).

6. The tray taking mechanism according to claim 3, characterized in that: The first support frame (14) is provided with a blowing nozzle (7) for removing impurities from the surface of the target part (5).

7. The tray taking mechanism according to claim 1, characterized in that: The separation cylinder (3) is arranged on a second support frame (8), and the height of the second support frame (8) is adjustable.

8. The tray taking mechanism according to claim 1, characterized in that: The telescopic suction nozzle (2) is a magnetic telescopic suction nozzle.

9. The tray taking mechanism according to claim 1, characterized in that: The separation cylinder (3) is a magnetic separation cylinder.

10. A pallet transfer system, characterized in that: It comprises the tray taking mechanism as described in any one of claims 1-9.

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