JPS6087122A - Palletizer - Google Patents

Abstract

PURPOSE:To heighten the accuracy of supply position by providing the first platform for horizontally giving and receiving a pallet with a pallet storage and the second platform for horizontal transport having a pallet positioning device between an elevating device and the first platform. CONSTITUTION:A palletizer comprises a pallet storage S having a plurality of pallets 22 supported at equal intervals by ledges on a frame 21, upper and lower platforms (P), P11, P12, the first transport device C1 having a mechanism for coupling the pallets to an elevating device E with a motor 1 and a screw shaft 4 and the storage S and the second transport device C22 having a positioning device D for P2. In case of supplying articles in a pallet 22 of the device S for assembly and returning the pallet 22 to the device S, a pallet 22 is drawn out from the lower stage P12 of the device S, and platforms P11, P12 are moved up and down until P11 is on the same level with P2 to return the pallet 22 on P2 to the platform P11. After that, the platforms P11, P12 are moved up a little to transfer the pallet 22 on the platform P12 to P2, and while the parts in the pallet 22 are assembled, the pallet 22 on the platform P11 is returned to a vacant space of the device S.

Description

Detailed Description of the Invention [Technical Field 1] The present invention relates to a palletizer that returns pallets from an assembly or processing stage to a pallet storage, particularly a depalletizer that supplies a barn F containing parts from a pallet storage to an assembly or processing stage. - This relates to a palletizer equipped with functions.

[Background Art 1 The above palletizer is disclosed in Japanese Patent Application Laid-open No. 57-963.
There is a method shown in Publication No. 5, but in the case shown here, when the cargo is transferred to the removal surface for assembly or processing stage, the position of the cargo is unstable and the cargo or the inside of the cargo is There was a problem in that it was not possible to automatically take out articles stored in cargo, or to automatically store articles in cargo. In addition, since the cargo is stacked, all the cargo must be removed from the barren F in order from the top.] The cargo cannot be stored in the pallet again until after it has been carefully removed. Another problem is that a temporary cargo storage area is required if the cargo is to be accommodated in a warehouse.

[Objective of the Invention 1 The present invention has been made in view of the above points, and its purpose is to automatically feed articles to an assembly or processing stage because the positioning accuracy of the articles is high. We provide palletizers that can.

[Disclosure of the Invention] The present invention provides a pallet storage for storing pallets in a plurality of upper and lower stages, and a pallet horizontal transport mechanism that transfers pallets between the pallet storage and a pallet storage provided adjacent to the pallet storage. a first platform comprising;
A second platform is equipped with a lifting device that raises and lowers the first platform, a horizontal pallet transport mechanism that transfers pallets between the first platform, and a second platform that lifts and lowers pallets on a 7-ohm platform. It is characterized in that it consists of a positioning device for positioning, and the pallet sent from the pallet storage warehouse to the second platform can be accurately positioned on the second platform. It is. Here, the first plant 7 ohms is for transferring pallets from the pallet storage to the second platform, and the second plant 7 ohms is for transferring pallets to the pallet storage, which are configured with two parts with a predetermined vertical interval. However, it is also preferable that the pallet storage has support members that independently support the upper and lower pallets. By adopting these configurations, the second plant form"
It is possible to shorten the time required to replace the second pallet with a new pallet from the pallet storage warehouse, that is, the waiting time on the assembly processing line side that uses the pallets on the second platform. Pallets in the storage warehouse can be accessed randomly, which has a great advantage in terms of convenience, rather than sequentially as in the conventional example.

The present invention will now be described in detail based on the illustrated embodiments.

1 to 4 show the overall configuration of an embodiment, where S is a pallet storage, C1 is a first conveyance device, and C2 is a pallet storage warehouse.
indicates the second transport device. The pallet storage S, the first conveyance device C], and the second conveyance device C2 are arranged in a straight line.

As shown in FIGS. 5 and 6, the pallet storage S is
A plurality of crosspieces 23 are attached to the inside surface of a frame 21 with an open front at equal intervals below the frame 21, and a caster type wheel 24 is attached to the lower end.
A plurality of pallets 22 are supported independently by 3 and housed under 1.

The first conveyor C1 has two stages of upper and lower plants with a 7 ohm P]I
P12, an elevating device E for moving both platforms P-11 and P12 downward by 1", and a connecting mechanism part J to the pallet storage S,
The elevating device E consists of a pair of guide columns 5 provided on a frame body 6 and a screw shaft 4 located between both guide columns 5 and rotationally driven by a motor 1 via a belt 2.
11P12 are both fitted into both guide columns 5 so as to be slidable in the up and down axial directions, and are also screwed into the screw shaft 4. Driven by the motor 1, both platforms P11P12 move up and down while maintaining an equal distance between them. In addition, the detection of the vertical position of this platform P11P1.2 is performed using the screw shaft 4.
This is done by detecting the rotational speed and rotational angle of the screw shaft 4 by a rotational position detector 3 disposed at the upper end of the screw shaft 4.

The connection mechanism section j in the first conveying device C1 is housed in a lower protrusion of the frame 6 as shown in FIGS. A cam plate 11 having rollers 12 and horizontally driven by an air cylinder 8, a push-up plate 7 whose vertical movement is guided by guide pins 9, and locate pins 10 provided at the four corners of the - face of the push-up plate 7. , and a stopper 25 with which the lower end of the front surface of the pallet storage S abuts, and the upper surface of the cam plate 11 is transferred with the front end of the pallet storage S abutting the stopper 25. The push-up plate 7 having the roller 13 is moved to the air cylinder 8
When the cam plate 11 is horizontally moved upward while being guided by the guide pin 9, the entire pallet storage S is lifted, and at the same time the locate pin 10 is inserted into the locate hole 2G formed in the bottom surface of the frame 21 of the pallet storage UH8. The pallet storage S is positioned by the fitting.

Next, the platform P11 in the first transport device C1
P12 will be explained. As mentioned above, these two platforms P]]P]2, which are provided in the upper and lower levels, share the frame 31 and are constructed with the same mechanism, and are shown in FIGS. 11, tp, and 12. As shown in the figure, a belt 33 as a conveyor is provided on both sides and is driven by a motor 32 and a pulley 44, and a pair of guide shafts 3 parallel to each other and parallel to the conveying direction of the belt 33 is provided in the center.
6, and further includes a motor 34 and a chain 35 for driving the slider 37. 45 is Tensimin V-La. A lever 38 supported by a shaft 42 is attached to the slider 37. This lever 38 is driven by an air cylinder 41 to rotate the tip having the engagement pin 39 upward, and the rear end is biased upward by a return spring 4o. The engagement pin 39 of the lever 38 fits into an engagement hole 49 formed at the bottom of the end of each pallet 22.
It is something that engages with.

The second transport device C2 is composed of a platform P2 and a positioning device, and is fixed to the frame 6 of the first transport device C1 as shown in FIGS. 13 to 16. A plant form P2 is formed by a frame 54 having an open top surface and a side surface facing the first conveying device C1, a pair of left and right endless belts 53 as conveyors, a motor 51 and a belt 52 that drive the belts, and 54, an air cylinder 6 for driving the push-up plate 55, which moves downward when both belts 53 are open, and the push-up plate 55.
0. A pressing plate 56 of a parallel link structure, which is located on the side of the frame 54 and driven by an air cylinder 58 in a direction perpendicular to the direction of conveyance by the belt 53, is slidably mounted on a shaft 61 protruding from the pressing plate 56. The suppressing plate 57 biased by the spring 62 constitutes a positioning mechanism. The downward movement of the push plate 55 is suspended from the push plate 55 and has 7 frames 5.
4 is guided by a guide shaft 59 that fits into the guide shaft 59.

Further, the corner portions of the pressing plate 57 are curved or inclined surfaces.

63 is a limit switch for detecting the pallet 22.

However, in this palletizer, the pallet 22 in the pallet storage S is sent to the second conveyance device C2 in the following manner, and the articles stored on the pallet 22 are assembled or processed, and the pallet 22 is It is to be returned to the pallet storage S again. That is, as shown in FIGS. 17 to 20, the connection (
The pallet 22 is pulled out by the lower platform P12 of the IP12, and then the upper platform pH is set to the same height as the platform P2. Both platforms F'+I
r' ] 2 to return the second pallet 22 of the platform P2j to the pH of the upper platform. This rear platform P1ip12 is moved a little bit to move the pallet 22 on the lower platform P12 to the platform P21, and the items in the pallet 22 moved to the platform P2 can be assembled or processed. While the pallet 22 is being served, the pallet 22 on the upper plan 17 ohm Pil is returned to the empty space in the pallet storage S, and this is one cycle operation. While the articles stored on the pallet 22 on the platform tray 2 are being assembled or processed, the pallet 22
2 storage operation to the pallet storage S and the new baren 2
2 to the lower platform P12, and the waiting time while the combs on the platform 2 are replaced is as shown in FIG. It is the sum of the transfer time of the pallet 22 to the pH, the double movement time of both the upper and lower platforms P11P12, and the transfer time of the pallet 22 from the lower platform I"12 to the platform P2 as shown in FIG. In other words, the time required to store Palé Met 22 in pallet storage S is not considered waiting time, but the waiting time is quite short.Also, the waiting time is quite short. S has a structure in which each pallet 22 is supported independently, and since the pallet 22 at any stage can be taken out (1), the pallets 22 can be handled in a so-called random access manner.

Now, the iS for valent accommodation and the platform pHP12
The pallet 22 is transferred between the two, and this is done as shown in FIGS. In other words, pull out the drawer)
The lower plan [
The pallet 2 is moved by lowering the form P12 to -, and then driving the slider 37 toward the pallet storage S side with the lever 38 in the upper position IrIII as shown in FIG.
Press 2 once. After that, lower the tip of the lever 38 to position it below the pallet 22, and move the tip of the lever 38 -L again to fit the retaining pin 39 into the retaining hole 49 of the pallet 22. As shown in FIG. 23, the pallet 22 is moved to the belt 3 by moving the slider 37.
3, and then the lever 38 is returned and the belt 33 is driven to move the pallet 22 to the platform P.
Move it to the center of I2. (on the contrary, from platform pH)
To return the pallet 22 to the comb/throat storage S, as shown in FIG. Move slider 37 to reno <-38
The pallet 22 is pushed into the pallet storage S by the tip.

The exchange of the parent 22 between the platform P], IP12 and the brand form P2, the drive of the belt 33 of the platform 12 and the platform operating in the same direction as this belt 33.・Execute with λ of point form P2) 53 and trigger) J. The pallet 22 transferred to the blunt form P2 is positioned in the following manner. That is, as shown in FIGS. 13 and 14, with the suppressing plate 56 moved to the side, the frame 54 sends the 1) pallet 22 to the bell seat 53. Then, by activating the air cylinder 58 and pressing the pallet 22 from the side with the suppressing plate 56, the other side of the pallet 22 is brought into contact with the inner surface of the frame 54, and the pressing plate 57 is biased by a spring. The end face of the valent 22 is pressed. The horizontal position of the pallet 22 is determined by the pressure plates 56 and 57 and the frame 54. In addition, the air cylinder 60 moves the pusher 1.
Push up the pallet 22 with the plate 55 1. Comb.

By bringing both upper surfaces of Y22 into contact with the frame 54, the vertical position of the pallet 22 is determined. In addition, the pallet 22 in the state of being pushed up in this way
is floating above the belt 53, as is clear from FIG.

[Effect of the Invention 1 As described above, in the present invention, the parent transferred from the pare/nod storage via the first platform to the second branto 7 ohm is placed on the second platform by the positioning device. It is highly adaptable to automation, as its position can be accurately determined by the .

[Brief explanation of drawings]

Figure 1 is a perspective view of one embodiment of the present invention, Figure 11112 is a plan view of the same, Figure 3 is a front view of the same, Figure 4 is a right side view of the same, Figures 5 and 6 are pallets. The right side view and vertical cross-sectional view of the storage compartment, Figure 7 shows the connection mechanism 3oee! ,1
Yo, □Oh, □1. Fig. 9 is a cross-sectional view of the coupling mechanism section, Fig. 10 is a longitudinal sectional view of the push-up plate of the coupling mechanism section when it is moving upward, Fig. 11 is a plan view of the first platform, and Fig. 12 is a plan view of the first platform. 13 and 14 are a plan view and a cross-sectional view of the second platform, and FIGS. 15 and 16 are a plan view and a cross-sectional view of the second platform with the pallet positioned. 17 to 20 are schematic longitudinal sectional views showing the procedure for transferring pallets via the first platform between the pallet storage and the second platform, and FIGS. 21 to 24 are pallet storage 25 to 27 are schematic vertical cross-sectional views showing the procedure for transferring pallets from the first platform to the pallet storage warehouse. D is a positioning device;
E is a lifting device, pH and PI3 are a first platform, P2 is a second platform, 22 is a pallet, 33 is a belt forming a conveyor as a horizontal transport mechanism, 53 is a belt as an endless conveyor, 55 is a Push-up plates 56 and 57 represent pressure plates as pressure fixing means. Agent Patent Attorney Ishi 1) Long 7 = 5, 45, ko Figure 6 Figure 7 Figure 8 Figure 16 Figure 17, Figure 2o Figure 21 Figure 22 Figure 2

Claims (1)

[Claims] (1) A pallet Y horizontal transport mechanism that transfers pallets between a pallet storage that stores pallets in multiple upper and lower stages and a pallet storage that is provided adjacent to this pallet storage. a first plant form, a lifting device for raising and lowering the first platform;
A palletizer comprising: a second platform equipped with several horizontal pallet conveyance structures for transferring pallets to and from the platform; and a positioning device for positioning the pallets on the second platform.
0 (2) Pallet storage, first platform and second
platforms are lined up in a straight line, and the first
The palletizer-0 according to claim 1, characterized in that the pallet transport direction on the platform and the second platform is the same. A patent claim characterized in that it is composed of two parts, one for transferring pallets to the second platform and the other for transferring pallets from the second platform to the pallet storage, and both are provided in two stages with a predetermined vertical interval. The range of the palletizer described in item 1 - 0 Palletizer-0 (5) pallet according to claim 1, characterized in that the palletizer is formed of a pusher plate located at the top of the pallet for pushing up the pallet, and a suppressing and fixing means for suppressing and fixing the sides of the pallet. Palletizer-0 according to claim 1, characterized in that the storage has wheels for running at the bottom and a connection part with the first platform part. (6) The pallet storage has an upper and lower part. Palletizer-0 according to claim 1, characterized in that it has a support member that independently supports each of the pallets.