JPS6236214A - Fork lifter and fork lifter device - Google Patents

Abstract

PURPOSE:To make a device automatic and high speed by projectingly providing a liftable conveyor arm to a bogie which moves forward and backward directed to a chain conveyor, in the advancing direction of said bogie, in the captioned device for translocating a long-size work on said chain conveyor. CONSTITUTION:Works X1, X2... are conveyed on a chain conveyor B at a certain interval. A group of conveyor arms 14C is placed in a position A1. A lifting cylinder 7 is lifted up for the work X1 which is to be translocated onto a pallet P, to lift up the work X1 to a position A2 in the figure. Then, a cylinder 6 is advanced to move a bogie T to a position A3 in the figure and, then, the group of conveyor arms 14C is lowered to a position A4. Thereby, the work X1 can be translocated onto a pallet P. Then, the bogie T is retracted and the group of arms 14C is returned to the position A1, to equally translocate the following work X2. By this construction, the device can be made automatic and high speed while its loading capacity can be increased.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a forklifter, and particularly to a forklift for transporting long objects (hereinafter referred to as shapes) such as square timbers and window frame materials transported by a chain conveyor or the like. This invention relates to a forklift and a device using the forklift, which is lifted from below the conveyor, moved forward, lowered, and passed through to transfer only the sections onto a pallet or the like on the other side.

[Prior Art] - Conventional forklifters have been able to move the profile by inserting a fork under the profile and raising the fork.

However, in order to move a predetermined number of shapes that are being conveyed closely in parallel to one another and transfer them to the other pallet, place a spacer on the pallet at a height that allows the fork to fit, and place a spacer on top of the spacer. The method used was to lower the profile and remove the fork.

[Problem that the invention seeks to solve]

However, for the sake of convenience, to give an example of an automatic film forming process for aluminum sash profiles, long and narrow profiles for window frames are closely conveyed using a chain conveyor, belt comparer, etc., and dozens of them are scooped up with a fork. When transporting and stacking on pallets etc., remove the forks.
To make it easier to move, five spacers at the height of the fork must be placed on top of the already loaded sections. In other words, if the height of the profile is 3~4co+ but the thickness of the fork is 4~5a11, the height of the spacer is 4~5cm or more.
(If the length of the fork is increased, the thickness of the fork must be increased, otherwise it will bend), which not only reduces the loading capacity on the pallet, but also creates other difficulties in supplying and removing spacers. However, there was a problem in that it was impossible to automate the loading process at high speed.

[Means for solving problems]

The present invention solves the above problems and develops a forklifter that does not require the supply or removal of large spacers and automates the loading work of sections at high speed, as well as a device that applies the same. It was configured as follows.

An elevating platform is provided on a cart that moves forward and backward along a horizontally suspended guide rail, and a conveyor arm is provided at the front of the elevating platform to protrude in the forward direction of the cart. This forklifter is characterized by having a conveyor whose upper part rotates. Furthermore, the present invention is a forklifter device in which two or more forklifters are arranged in parallel and operated in synchronization.

[Effect]

The forklifter of the present invention having the above-mentioned configuration lifts a group of shapes that have been conveyed in a close parallel manner on a conveyor by raising an elevator platform from below the conveyor and lifting the group of shapes with a conveyor arm. 1. Move the cart forward and stop at a predetermined position, lower the lifting platform, place the profile on the conveyor arm on the pallet, and move the cart back.
The placement of the layered shapes is completed. To transfer the shapes from the second layer onwards, the conveyor arm is advanced to the top of the already placed shapes, lowered, and stopped, the conveyor of the conveyor arm is rotated in the forward direction, and at the same time, the cart is moved backwards, and the conveyor arm is rotated in the forward direction. The shape on the arm is dropped and transferred onto the already placed shape. Furthermore, by providing two or more conveyor arms and adjusting the interval between the conveyors, it is possible to transfer shapes up to about 3 m long. However, when transferring long sections of 5 m or more or short but heavy sections, two or more of the above-mentioned forklifters are installed in parallel, and the operations of all forks and lifters are synchronized. The device achieves the same operation as the one described above, and performs the desired transfer.

〔Example〕

Embodiments of the present invention will be described based on the drawings. Figure 1 (a
) is a plan view of a single forklifter according to the present invention;
The figure is a side sectional view of Figure 1(a), Figures 3' to 6 are schematic operation diagrams showing the process of loading sections, and Figure 7 is a schematic diagram showing the state in which the forklift device is deployed in a continuous process. The plan view, FIG. 8, is a side view of FIG. The single forklifter F shown in FIG. 1(a) has a lifting platform E disposed on a truck T, and a collebear 15. 15' projects from the conveyor arm 14.

The truck 1 has axles 2a, 2'a horizontally supported on the longitudinal axis of a base 1 formed in a planar rectangular shape.
A slide ring 2.2' is attached to both ends of a and 2'a, and the groove ring 2.2' is fitted onto a guide rail 3.3'. The guide rail 3゜3' has a roughly U-shaped cross section.
The book has openings facing each other, both longitudinal ends of which are connected by base members 4, 4', and is formed into a rectangular shape in plan. Further, between the base end member 4 of the guide rails 3, 3' and the trolley T, the front end of the rod 5 is connected to the trolley T, and the front end of the cylinder 6 for forward and backward movement is connected to the base end member 4, so that It is installed as a driving machine for the T's forward and backward movement. By the telescoping operation of the cylinder 6 for forward and backward movement, the trolley T is moved along the guide rail 3.
．． It is configured to move forward and backward along the line 3'.

The elevating table E is a rectangular shape that is long from front to back, and the rod 8 of the elevating cylinder 7 is attached to the center of the plane of the base 1 with the rod 8 facing upward.
The tip of the lift is connected to the lifting platform E. A pair of elevating guide rods 9 that protrude vertically downward in the longitudinal direction of the elevating platform E.
, 9', and a guide through hole 10.10' into which the lifting guide 9.9' fits is bored in the trolley T. The elevating platform E is raised and lowered by the telescopic operation of the elevating cylinder 7.

Further, between the elevator platform E and the cart T, parallel links 11 and 11' are provided on both sides of the elevator platform E, in which two links intersect in a substantially X-shape from the front. The left end of the - side parallel link 11 in FIG. 12° and 12' are fitted into horizontally elongated guide holes 13 and 13' formed in the lifting platform E and the trolley T, respectively. The parallel link 11' on the other side is also configured symmetrically with the example parallel link 11, and the parallel link 11.11' has the function of maintaining the elevator platform E horizontally when the elevator platform E is raised. .

A conveyor arm 14 is provided protruding from the front end (right side in FIG. 1) of the elevating table E so that its upper surface is higher than the upper surface of the elevating table E and is horizontal.

Conveyor shafts 14a and 14b are horizontally supported on the proximal and distal edges of the conveyor arm 14, respectively, and one conveyor 15.1 is provided on each side of the conveyor arm 14 in the longitudinal direction.
5' is mounted so that its upper surface can rotate in the forward direction of the elevator platform E. The conveyor shaft is connected to the rotating shaft of a drive machine 16 disposed on the elevator platform E through a chino or the like. By activating the drive fi 16 and transmitting rotation to the conveyor shaft 14a to rotate the conveyor 15, 15' in the forward direction, the section on the conveyor arm 14 moves forward. The operation of this conveyor 15, 15' is carried out in conjunction with the backward movement of the trolley T in the process of loading the sections, and the detailed operation will be described later. It is preferable that the conveyor 15 is a double conveyor as shown in FIG. 1(a), but it can also be a continuous conveyor as shown in FIG. 1(b). ).

The single forklifter F having the above configuration can transport short objects on the conveyor if the distance between the conveyors 15 and 15' of the conveyor arm 14 is wide. When transporting large objects, two or more individual forklifters F are used as a forklifter device Fc (FIG. 7) that is arranged in parallel.

The forklifter F transfers and loads the shaped materials onto the pallet (P) by operating the lifting cylinder 7°, the forward/backward movement cylinder 6, and the conveyor 15, 15'. If we focus on this operation only at the conveyor arm 14, it performs upward, forward, downward, and backward movements, places the first layer of shapes on the pallet P, and loads the second and subsequent layers. ,
The downward movement of the square is stopped above the profile already placed, the conveyor 15, 15' is rotated forward, the profile is advanced on the conveyor arm 14 and lowered, and at the same time the square is moved The machine performs a backward movement and loads the sections.

Next, an embodiment in which the forklift device FC of the present invention is installed in a continuous process will be described based on FIGS. 3 to 8.

The shapes X, which are the objects to be transported, are placed and transported in a lined state at a constant interval on the chain conveyors B, B, etc. of the transport device H, which is the previous process.
・are arranged in parallel at regular intervals. In addition, the chain conveyors B, B, . . . reduce the conveyance speed by an auxiliary chain conveyor B' near their terminal ends, and convey the shapes X in an closely aligned manner. □ The forklifter device Fc has a device that centrally controls each forklifter F, and controls each chain conveyor B, B.
Guide rails 3.3' are arranged at the lower part near the end of the gap, for example, at 1 m intervals, and can be fitted with groove rings 2.2' over the forward and backward movement range of each forklifter F.
are placed.

Rod 5 of cylinder 6 for forward and backward movement connected to the rear end of truck T
The telescopic operation allows the trolley T to move forward and backward.

In front of the forklift device Fc, a loading device N, which is the next process, is arranged, and is equipped with a long pallet P parallel to the conveyance direction after the shape material X is transferred. The pallet) P is
The shapes X can be stacked in a certain number of layers. The pallet P is carried in from one of the conveyors placed at the bottom of the loading device N, and is placed in a fixed position at the top on the elevating platform 17, and after loading a predetermined amount of shapes, the pallet I-P is lowered. It is configured to be carried out from the other conveyor.

The elevating table 17 protrudes upward from the gap between the bottom frames of the pallet P, and is movable up and down by a cylinder or the like disposed below.

The height of the upper surface of the elevating table 17 is set at a position slightly higher than the height of the upper surface at the lowering point of the conveyor arm 14 when the shaped material is placed for the first time.

In addition, when loading the second stage, the elevating loading table 17 is moved by the sum of the height of the conveyor arm 14, the height of the profile X, and the thickness of the spacer S (hereinafter referred to as "set height"). )
Let it fall. When loading the third and subsequent stages, the sum of the height of the profile and the thickness of the spacer S is lowered. Thereby, the downward stroke of the lifting cylinder 7 of each forklifter F is always the same so that the shapes can be loaded.

The spacer S is made of a filter paper string interposed between the stacked sections to protect the sections from contact scratches.

Next, the operation of the forklift device Fc will be explained. Initially, the forklift device Fc is at the backward movement end, which is the starting point of the movement, and the conveyor arm group 14C is at the position shown in FIG. 8A1. In order to place the shape group Xi to be placed on the pallet P (as shown by the broken line, the number of cylinders corresponds to the width of the pallet l-P) on the conveyor arm group 14c, a lifting cylinder is used. 7 is activated to raise the conveyor.

- Simultaneously lift the section group X1 using the arm group 14c.

The position of the conveyor arm group 14c that has lifted the profile group X1 is at A2, and with the conveyor arm group 14c raised, the cylinder 6 for forward and backward movement is operated forward to move the cart T to a predetermined position A3. Place the shape group x1 on pallet P.
In order to place the conveyor arm group 14c from the position A3 to the position A4, the lifting cylinder 7 is operated downward. Finally, in order to load the second stage group of shapes X2, the forward and backward movement cylinder 6 is operated backward to move the truck T backward, thereby returning the conveyor arm 14 to the position A1, which is the starting point of the square movement.

As described above, due to the sphere movement of the conveyor arm group 14c of the forklift group Fc arranged in parallel, the first section group X!
is transferred to the pallet P (correctly, the elevating type mounting table 17) while being supported at multiple points.

From the second time onwards, that is, the shape group Xl transferred to pallet P
Regarding the second and subsequent stages of profile group X2 to be loaded on top, the process is as follows. Chain conveyor B of conveyor H, B...
The conveyance speed of chain conveyors B, B, etc. is set to be synchronized with the cycle of one square movement of one group of forklifters Fc in a close contact state, so when conveyor arm group 14C is at position A1, chain conveyors B, B, etc.・In the position of 2
A group of shapes X2 to be stacked on the tier is being transported. Then, the conveyor arm group 14c is raised, moved forward, and then lowered in the same way as in the first operation. By this point, the elevating table 17 for the pallet (P) has been lowered by the set height. At the lowering point (A3°) of the conveyor arm group 14c, the work of loading the sections X is carried out as follows.

As shown in FIG. 3, the conveyor arm group 14c is stopped at a position close to above the section group X1 placed for the first time. Next, as shown in FIG. 4, the conveyors 15 and 15' of the conveyor arm 14 are rotated in the forward direction (rightward in the drawing), and the profile group X2 on the conveyor arm group is transferred to the conveyor 1 on the conveyor arm 14.
5. Advance by 15'. Furthermore, at the same time as this operation, the trolley T is moved backward in the opposite direction according to the rotational speed of the conveyor 15, 15'. As a result, the profile group X2 is sequentially lowered and stacked onto the profile group Xi. FIG. 5 shows the progress of the operating state shown in FIG. 4. FIG. 5 shows a state in which the group of sections X2 is loaded onto the group of sections Xl, the operation of the conveyor 15, 15' is stopped, and the cart T is being moved backwards.

With the above steps, the transfer of the profile group
In cooperation with the forward movement of ', the group of sections The drive control of each of the drive parts is performed by setting a program in advance in a microcomputer built into a power distribution board (not shown).

〔Effect of the invention〕

Since the forklifter and forklifter device of the present invention are configured as described above, the following effects can be obtained from its operation.

Large spacers with high sitting heights are not required at all to load objects to be transported on pallets in layers, making it possible to automate the loading work at high speed.

Furthermore, since a spacer with a high seating height is not required, objects to be transported can be loaded on one pallet without waste.

Furthermore, depending on the length and weight of the object to be transported, it is possible to easily handle this by arranging two or more forklifters in parallel, so that a simple control device can be used.

[Brief explanation of the drawing]

The drawings relate to the forklifter of the present invention, and are shown in Fig. 1(a).
is a plan view of a forklifter equipped with two conveyors,
Fig. 1(b) is a plan view of a forklifter equipped with a series of conveyors, Fig. 2 is a side sectional view of the forklifter, and Figs. 3 to 6 are schematic diagrams showing the process of loading sections. FIG. 7 is a schematic plan view showing the state in which the forklifter is installed in a continuous process, and FIG. 8 is a side view of FIG. 7. F...Forklifter Fc...Forklifter device B'...Auxiliary chain conveyor T...Dolly E...Elevating platform X...Shape 3.3'...Guide rail 5.8・
...Rod 6...Cylinder for forward and backward movement 7...
・Lifting cylinder 9.9′... Lifting guide rod 11
, 11'...Parallel link 14...Conveyor arm 15, 15'...Conveyor 17...Elevating mounting table 14c...Conveyor arm group Patent applicant: Toyo Giken Kogyo Co., Ltd. (one other person) Figure 3 Figure 4 Figure 5 Figure O Figure 6

Claims (2)

[Claims] (1) An elevating platform is provided on a cart that moves forward and backward along a horizontally suspended guide rail, and a conveyor arm is provided at the front of the elevating platform protruding in the forward direction of the cart. A forklifter characterized by being equipped with a conveyor that rotates in the forward direction of the forklift. (2) An elevating platform is provided on a cart that moves forward and backward along a horizontally suspended guide rail, and a conveyor arm is provided at the front of the elevating platform to protrude in the forward direction of the cart. 1. A forklifter device comprising two or more forklifters arranged in parallel, each having a conveyor that rotates in the forward direction of the forklifter.