JP2882454B2 - Transfer device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer device provided with a clamp device capable of clamping a conveyed object and a moving device capable of moving the clamp device along a conveying path of the conveyed object.

[0002]

2. Description of the Related Art Conventionally, as this type of transport device, a clamp device is provided with a clamp member only for holding the transported material in the vertical or horizontal direction. In some cases, the sheet is conveyed as it is from the conveyance start point to the conveyance end point without changing the relative position with respect to the clamp member.

[0003]

According to the above-described conventional transfer apparatus, the clamped transfer object is transferred from the transfer start point to the transfer end point without changing the relative position with respect to the clamp member. Because it is configured, for example,
If the transported material is placed in a state slightly shifted from a predetermined position on the transportable material mounting table at the transport starting point, if the transported material is transported to the transport end point by the transport device,
The sheet is placed at a position slightly deviated from a predetermined position on the transfer object mounting table at the transfer end point. Further, according to the conventional transport device, depending on the degree of displacement of the transported product, a trouble of clamping failure may occur, or even if the clamp can be performed,
If the clamping force is weak, there is a risk that the conveyed object will shift in the clamped state during conveyance, and in any case, in order to place the conveyed object at the predetermined position of the conveyance end point, at the conveyance start point or the conveyance end point Separate positioning means must be prepared and the positioning of the transported object must be carried out separately for each. Therefore, there is a drawback in that the entire transporting operation takes time and effort, and the transport efficiency is reduced.

[0004] Accordingly, it is an object of the present invention to provide a transporting device with high transporting efficiency in view of the above-mentioned drawbacks.

[0005]

The object of the present invention to achieve this object is to provide a clamp device capable of clamping a conveyed object by forming a clamp device capable of clamping the conveyed object in a vertical direction. A plurality of clamp members and a plurality of lower clamp members are provided, and in a state where the conveyed object is received by the lower clamp member, the conveyed object is clamped by separately contacting a plurality of vertical or oblique surfaces of the conveyed object. There is provided a positioning mechanism which guides horizontally to a predetermined position of the apparatus and can hold the position horizontally (corresponding to claim 1).

[0006] The positioning mechanism may be formed on one or both of the upper clamp member and the lower clamp member (corresponding to claim 2).

[0007]

According to the characteristic structure of the transfer device of the present invention, a plurality of upper clamp members and lower clamp members each capable of vertically holding the transferred object are provided to constitute a clamp device capable of clamping the transferred object. In a state in which the conveyed object is received by the lower clamp member, the conveyed object is brought into contact with a plurality of vertical or diagonal surfaces of the conveyed object to guide the conveyed object horizontally to a predetermined position of the clamp device, and the position thereof is also determined. Since a positioning mechanism capable of holding the moving object is provided, the conveyed object at the starting point of conveyance is received by the lower clamp member, and then the conveyed object is horizontally guided to a predetermined position of the upper and lower clamp members by the positioning mechanism. Can be held. Therefore, according to the transport device of the present invention, for example,
Even when the conveyed object is placed at a position slightly deviated from a predetermined position on the conveyed object mounting table at the conveyance start point, the conveyed object is positioned with respect to the predetermined position of the upper and lower clamp members during the conveyance of the conveyed object. Aligning and holding, the transported object can be placed at a predetermined position on the transporting object mounting table at the transport end point as it is,
The transported object can be transported to a predetermined position of the transport end point without performing the alignment of the transported object at the transport start point and the transport end point as in the related art. As a result, the labor and time of the transport operation are reduced, and the transport operation can be efficiently performed. Further, since the position of the conveyed object relative to the clamp device can be held by the positioning mechanism, it is possible to prevent the position of the conveyed object without clamping with a strong force as in the related art. Then, a deformed or damaged transported object can be set as a transport target (corresponding to claim 1).

If the positioning mechanism is formed on one or both of the upper clamp member and the lower clamp member, the positioning and clamping of the conveyed object can be performed by the same member. Can be formed simply, and by adopting a simple structure, it is possible to achieve cost reduction and improvement in maintainability (corresponding to claim 2).

[0009]

Therefore, according to the transfer device of the first aspect of the present invention, it is possible to improve the transfer efficiency and to reduce the transfer cost.

According to the transfer device of the second aspect of the present invention, in addition to the above-described effects, the structure can be simplified, and the economical efficiency and maintainability of the device can be improved.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 9 and 10 show a casting transfer apparatus S for transferring a casting 1 which is an example of a transfer product in a casting finishing line. S is, for example, clamped and lifts the casting 1 placed on a pallet,
It is used to transport to a predetermined position in a processing device.

The casting 1 is a cylinder head member of an engine, and includes a plurality of types of cylinder head members having different shapes, which are sequentially sent to the casting finishing processing line and undergo predetermined processing steps. Finished in a predetermined shape. Each of the castings 1 is formed by a low-pressure casting method. Each of the castings 1 sent to the casting finishing line has a plurality of recesses 1a at the same positions (FIGS. 1 and 6). ), And a gate portion 1b corresponding to a casting port portion of the mold remains.

The transfer device S will be described. An apparatus body 4 having a clamp device 2 capable of holding the cast product 1 and an elevating means 3 capable of operating the clamp device 2 up and down,
The apparatus main body 4 is attached to a base 5 so as to be horizontally movable, and a moving device 6 is provided which is capable of horizontally moving the apparatus main body 4 along the transport path of the article 1. Therefore, after the casting 1 placed on the transport starting point is clamped by the clamping device 2, the ascending / descending means 3 lifts the casting 1 together with the clamping device 2 to a predetermined height in this state, and the moving device 6 moves the device main body 4. It is possible to transport the casting 1 from the transport starting point to the transport end point by horizontally moving the entirety to a position above the transport end point along the base 5 and then lowering the casting 1 in the reverse order. it can.

The base 5 is formed by combining steel members so that the apparatus main body 4 can be horizontally movably supported above the casting 1 from the transfer starting point to the transfer end point.

The moving device 6 includes a first hydraulic cylinder 6a
The base end of the first hydraulic cylinder 6a is fixed to the base 5, and the telescopic operating end of the other end is attached to the base 5 so as to be horizontally movable. The first hydraulic cylinder 6
a by operating the telescopic drive of the device main body 4.
Is configured to be able to move horizontally in the transport range while being supported by the base 5.

The device main body 4 has a first mounting portion 7a for mounting the other end of the first hydraulic cylinder 6a and a first device main body 7 having a second mounting portion 7b to the base 5. And a second device main body 8 attached to the first device main body 7 via a second hydraulic cylinder 3a that can be vertically driven. The second device main body 8 is configured to be able to move up and down with respect to the first device main body 7 by the expansion and contraction driving operation of the second hydraulic cylinder 3a. The clamping device 2 and an elevating device 3b capable of vertically moving the clamping device 2 up and down with respect to the second device main body 8 (FIG. 7)
・ See 8), each pair is mounted so that two castings can be transported at once. In addition, the lifting / lowering means 3 refers to the combination of the second hydraulic cylinder 3a and the lifting / lowering device 3b.

As shown in FIGS. 1 and 2, the clamp device 2 includes a plurality of upper clamp members 9 and a plurality of lower clamp members 10 capable of vertically holding the casting 1. A plurality of pairs of the respective upper clamp members 9 are provided, and each pair of the upper clamp members 9 is synchronized in a different direction with respect to each other in a state where the tip portions are individually fitted into the plurality of concave portions 1 a provided on the upper surface of the casting 1. The cast product 1 is formed so as to be horizontally guided to a predetermined position of the clamp device 2 by being moved horizontally and abutting against the peripheral wall of the concave portion 1a and to be able to hold the position (see FIGS. 3 and 4). The drive for horizontal movement is
This can be performed by the third hydraulic cylinder 9a separately provided (see FIG. 5). The upper clamp member 9 is called a positioning mechanism K. Each of the lower clamp members 10 is formed so as to be swingable up and down so as to support the casting 1 while holding it from below, and the swing drive is performed by a separately provided fourth hydraulic cylinder 10a. Can be implemented. Also,
The upper and lower clamp members 9, 10 and the hydraulic cylinders 9a, 10a for driving the clamp members are integrally attached to a support frame 11 for support. And
As shown in FIGS. 7 and 8, the support frame 11 is attached to the second attachment main body 8 via the elevating device 3b so as to be vertically movable and swingable in the horizontal direction. In addition, a posture fixing means 12 capable of fixing a relative posture between the second device main body 8 and the clamp device 2 to a predetermined state in accordance with a lifting operation of the clamp device 2 by the lift device 3b, It is provided between the main body 8 and the clamp device 2. The posture fixing means 12 includes a fitting convex portion 12b separately provided at a facing portion between the second device main body 8 and the clamp device 2, and a fitting convex portion 12b
Fitting portion 12 comprising a fitting concave portion 12c which can be fitted into
a, the fitting convex portion 12b and the fitting concave portion 12c are fitted together with the rising of the clamp device 2 with respect to the second device main body 8, and the postures of both can be fixed. Specifically, it is possible to fix the relative posture between the second device main body 8 and the clamp device 2.

The lifting device 3b will be described. The clamp device 2 can be lifted until the fitting portion 12a is fitted. When the fitting portion 12a is not fitted, the clamp device 2 is supported. The frame 11 is formed so as to be swingable in the lateral direction with respect to the second device main body 8. Specifically, as shown in the figure, two airtight bags 13 vertically arranged between the second device main body 8 and the support frame 11, and an upper airtight bag of the airtight bags 13 The body 13a is provided with a supply / discharge device (not shown) that can supply and discharge air as an example of a lifting fluid. By sending air into the upper airtight bag 13a, the upper airtight bag 13a is inflated, and the support frame 11 can be raised by the inflation force. The lower airtight bag 13b is filled with a certain amount of air in advance, and when the support frame 11 is in a lowered state, it serves as a swing support portion of the support frame 11 and a clamp for the cast product 1. This serves as a shock-absorbing part that reduces the impact caused by the shock.

According to the casting conveying apparatus S of this embodiment, the casting 1 placed at the starting point of conveyance with the concave portion 1a facing upward.
The second device main body 8 is lowered so that the tip of the upper clamp member 9 is fitted into the concave portion 1a of the first clamp member 9, the cast product 1 is received by the lower clamp member 10, and the cast product 1 is By moving and transporting to the transport end point as described above while performing positioning, even if the mounting position of the casting 1 is slightly shifted at the transport starting point,
It becomes possible to efficiently carry out the transfer operation by correcting the posture during transfer.

[Another embodiment] Another embodiment will be described below.

<1> The conveyed material is not limited to the cylinder head member described in the above embodiment, but may be a cast product in general, or may be a product having a constant shape. If the positioning mechanism has a plurality of vertically or obliquely contactable surfaces, positioning can be performed while being conveyed by the conveyance device.

<2> The positioning mechanism is not limited to the one provided on the upper clamp member described in the previous embodiment.
For example, it may be provided on the lower clamp member or on both upper and lower clamp members, and may be provided separately from the upper and lower clamp members.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is a cross-sectional side view showing a main part of a casting transfer apparatus according to an embodiment.

FIG. 2 is a front sectional view showing a main part of the casting transfer apparatus of the embodiment.

FIG. 3 is a cross-sectional side view showing an operation state of a positioning mechanism in a concave portion of a casting.

FIG. 4 is a sectional front view showing the operation of a positioning mechanism in a concave portion of a casting;

FIG. 5 is a cross-sectional view from above showing the installation state of a hydraulic cylinder for driving a clamp member.

FIG. 6 is a top view of a casting.

FIG. 7 is a front view showing the lifting device according to the embodiment;

FIG. 8 is a front view showing the lifting device according to the embodiment;

FIG. 9 is a side view showing a casting transfer apparatus of the embodiment.

FIG. 10 is a top view showing the casting transfer apparatus of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conveyed object 2 Clamping device 6 Moving device 9 Upper clamp member 10 Lower clamp member K Positioning mechanism

────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Yoshimasa Shiraishi 2 Takaracho, Kanagawa-ku, Yokohama-shi, Kanagawa Prefecture Examiner, Nissan Motor Co., Ltd. Hisao Suzuki (56) Reference JP-A-63-26254 (JP, A) JP-A-62-60798 (JP, A) JP-A-60-64067 (JP, A) JP-A-1-92396 (JP, U) JP-A-54-183873 (JP, U) (58) Int.Cl. ⁶ , DB name) B66C 1/00-1/68

Claims (2)

(57) [Claims] 1. A moving device (6) that is provided with a clamp device (2) that can freely clamp a conveyed object (1) and that can move the clamp device (2) along a conveying path of the conveyed object (1).
The clamp device (2) comprises an upper clamp member (9) and a lower clamp member (10) capable of vertically holding the transported object (1). In the state where the transported object (1) is received by the lower clamp member (10), the transported object (1) is individually brought into contact with a plurality of vertical or oblique surfaces of the transported object (1). Is horizontally guided to a predetermined position of the clamp device (2) and is provided with a positioning mechanism (K) capable of holding the position. 2. The transfer device according to claim 1, wherein the positioning mechanism (K) is formed on one or both of the upper clamp member (9) and the lower clamp member (10).