JPH0891762A - Transfer device - Google Patents

Abstract

PURPOSE: To allow the slight error of the installtion position of a transferred substance and transfer a received substance in a stable manner, as to the receiving of the transferred substance by a clamping device. CONSTITUTION: A supporting frame 11 which integrally supports a clamping device 2 which can nipping-hold a transferred substance is installed in a vertically shiftable manner for the device body 4 and in a swingable manner in the lateral direction, and a raising/lowering device 3b which can operate the clamping device 2 in a vertically raising/lowering manner is interposed between the device body 4 and the supporting frame 11, and an attitude fixing means 12 which fixes the relative attitude between the device body 4 and the clamping device 2 in a prescribed stage, accompanied with the rising operation of the clamping device 2 by the raising/lowering device 3b, is installed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveying device provided with a clamp device capable of nipping a conveyed object and an elevating device capable of vertically moving the clamp device.

[0002]

2. Description of the Related Art Conventionally, as a transfer device of this type, there is one in which a support frame integrally supporting a clamp device is attached to the main body of the device so that it can be moved only vertically. In some cases, the clamp device is lowered by the elevating device from above the transported object placed at a predetermined position of the transport starting point, and the clamp device is similarly lifted while the transported object is clamped.

[0003]

According to the above-mentioned conventional conveying device, the supporting frame integrally supporting the clamping device is attached to the main body of the device so that it can be moved only up and down. Although the vertical movement direction of is fixed and the conveyed object clamped by the clamp device can be stably conveyed, for example, if there is an error in the position or posture of the conveyed object at the starting point of conveyance, the clamp device cannot be lowered. Along with this, there is a risk that the clamp device and the conveyed object interfere with each other, and if the clamp device and the conveyed object interfere with each other, there is a problem that the conveying device and the conveyed object are damaged or damaged.
In order to prevent this, it is necessary to position the conveyed product at a predetermined position at the starting point of the conveyance, which requires a lot of work and lowers the conveying efficiency.

Therefore, an object of the present invention is to solve the above-mentioned problems and to receive a conveyed product by a clamp device.
It is an object of the present invention to provide a transfer device which can tolerate a slight error in the installation position of the transferred product and can stably transfer the received transferred product.

[0005]

In order to achieve this object, a characteristic constitution of a conveying apparatus of the present invention is such that a supporting frame for integrally supporting a clamp device capable of sandwiching a conveyed object is arranged above and below the apparatus main body. Provided movably and swingably in the lateral direction, and interposing an elevating device capable of vertically elevating the clamp device between the device body and the support frame,
There is provided a posture fixing means capable of fixing the relative postures of the apparatus main body and the clamp device in a predetermined state when the lifting device raises the clamp device (corresponding to claim 1).

The elevating device may be provided with an airtight bag body and a supply / discharge device capable of supplying / discharging the elevating fluid to / from the airtight bag body (corresponding to claim 2). Further, the posture fixing means may be a fitting portion provided between the apparatus body and the clamp device (corresponding to claim 3).

[0007]

According to the characteristic construction of the carrying device of the present invention, the supporting frame integrally supporting the clamp device capable of sandwiching the carried object is vertically movable with respect to the main body of the device and is horizontally swung. Since the clamp device is freely provided and the clamp device is interposed between the device body and the support frame, the clamp device is swingable laterally with respect to the device body. For example, even if there is some error in the position or posture of the conveyed object when the clamp device is lowered by the elevating device to receive the conveyed object, the error is caused by the swing of the clamp device. It is possible to absorb and prevent the clamp device from directly interfering with the conveyed object. As a result, it is possible to avoid the problem that the conveyed item and the clamp device interfere with each other and are damaged or damaged when the conveyed item is received.
It is possible to save the time and effort required for positioning the transported object at the transport starting point as in the conventional case. Further, since the posture fixing means that can fix the relative posture between the device body and the clamp device in a predetermined state in association with the lifting operation of the clamp device by the lifting device is provided, After receiving, by raising the clamp device, the swing of the clamp device is blocked, and it becomes possible to clamp the conveyed object without changing the relative posture with respect to the main body of the device, and stable conveyance is possible. It becomes possible (corresponding to claim 1).

If the elevating device comprises an airtight bag body and a supply / discharge device capable of supplying / discharging the elevating fluid to / from the airtight bag body, for example, as an example of the elevating fluid By supplying / discharging air whose volume change is large with respect to external pressure to the airtight bag body, it is possible to move the clamp device up and down by utilizing the volume change of the airtight bag body, when clamping a conveyed object, It is also possible to expect a buffering effect during transportation (corresponding to claim 2).

Further, if the posture fixing means is a fitting portion provided between the apparatus body and the clamp device,
With a simple structure, it is possible to fix the relative posture of the device body and the clamp device in a predetermined state,
It is possible to reduce the cost of the device and improve the maintainability (corresponding to claim 3).

[0010]

Therefore, according to the carrying device of the first aspect of the present invention, when receiving the carried product by the clamp device, some error in the installation position of the carried product is allowed, and the carried product is received. It becomes possible to stably convey an object, prevent damage due to interference of the conveying device with the conveyed object, and achieve efficiency improvement and cost reduction as a whole conveying operation.

According to the second aspect of the present invention, in addition to the above-mentioned effects, the cushioning action can prevent the adverse effect of the impact or vibration on the conveyed object or the apparatus itself, and the functionality of the apparatus. It becomes possible to improve durability.

According to the third aspect of the present invention, in addition to the effects described above, it is possible to improve the economical efficiency and maintainability of the apparatus.

[0013]

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

9 and 10 show a casting product conveying device S for conveying a casting product 1 which is an example of a conveyed product in a casting product finishing processing line. , S is simply referred to as a transfer device), for example, by clamping and lifting the cast product 1 placed on a pallet,
It is used to convey to a predetermined position of the processing device.

The cast product 1 is a cylinder head member of an engine, and there are a plurality of types of cylinder head members having different shapes. These are sequentially sent to the casting product finishing processing line and undergo a predetermined processing step. Finished into a predetermined shape. Further, each of the castings 1 is formed by a low pressure casting method, and each of the castings 1 sent to the casting product finishing line has a plurality of recesses 1a at the same position (see FIGS. 3 and 8). (Refer to FIG. 4) respectively, and the sprue part 1b corresponding to the casting port of the mold remains.

Explaining the transfer device S, a device main body 4 having a clamp device 2 that can clamp a cast product 1 and an elevating means 3 that can vertically move the clamp device 2 is described.
It is configured to be attached to a base 5 so as to be horizontally movable, and to be provided with a moving device 6 that is capable of horizontally moving the apparatus body 4 along a conveyance path of the conveyed object 1. Therefore, after the cast product 1 placed at the starting point of conveyance is clamped by the clamping device 2, the elevating means 3 lifts the clamped device 2 up to a predetermined height in that state, and the moving device 6 causes the device body 4 to move. It is possible to convey the cast product 1 from the transport start point to the transport end point by horizontally moving the whole along the base 5 to a position above the transport end point and then lowering the cast product 1 in the reverse order to the above. it can.

The base 5 is formed by combining shaped steel members so that the apparatus main body 4 can be horizontally moved above the base of the casting 1 from the start of the transfer to the end of the transfer.

The moving device 6 includes a first hydraulic cylinder 6a.
The base end portion of the first hydraulic cylinder 6a is fixed to the base 5, and the telescopic working end of the other end is horizontally movable with respect to the base 5. The first hydraulic cylinder 6 fixed to the device body 4
The device main body 4 is operated by operating a for expansion and contraction.
Is configured so that it can be horizontally moved in the transport range while being supported by the base 5.

The device main body 4 has a first mounting part 7a for mounting the other end of the first hydraulic cylinder 6a, and a second mounting part 7b for mounting the base 5 on the first device main body 7. And a second device body 8 attached to the first device body 7 via a second hydraulic cylinder 3a that can be vertically moved up and down. 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 an expansion / contraction driving operation of the second hydraulic cylinder 3a. The clamp device 2 and an elevating device 3b for vertically moving the clamp device 2 with respect to the second device body 8 (see FIG.
2) are attached one by one, so that two castings can be conveyed at one time. The lifting means 3 is a combination of the second hydraulic cylinder 3a and the lifting device 3b.

As shown in FIGS. 3 and 4, the clamp device 2 is constructed by providing a plurality of upper clamp members 9 and lower clamp members 10 each of which can clamp the cast product 1 in the vertical direction. A plurality of pairs of the upper clamp members 9 are provided, and the tip portions of the upper clamp members 9 are individually fitted into the plurality of recesses 1a provided on the upper surface of the casting 1, and the upper clamp members 9 are synchronized with each other in different directions. It is formed so as to horizontally guide the casting 1 to a predetermined position of the clamp device 2 by holding the position by contacting the peripheral wall of the recess 1a (see FIGS. 5 and 6). The driving for horizontal movement can be performed by the third hydraulic cylinder 9a attached separately (see FIG. 7). The upper clamp member 9 is referred to as a positioning mechanism K. Each of the lower clamp members 10 corresponds to the cast product 1
Is formed so as to be swingable up and down so that it can be supported in a state of being held from below, and the swing drive can be carried out by a fourth hydraulic cylinder 10a separately provided. The upper and lower clamp members 9 and 10 and the hydraulic cylinders 9a and 10a for driving the clamp members are integrally attached to a support frame 11 for support. As shown in FIGS. 1 and 2, the support frame 11 is attached to the second attachment body 8 via the elevating device 3b so as to be vertically movable and horizontally swingable. .
Further, the posture fixing means 12 that can fix the relative posture between the second device body 8 and the clamp device 2 in a predetermined state in association with the raising operation of the clamp device 2 by the elevating device 3b is used as the second device. It is provided between the main body 8 and the clamp device 2. The posture fixing means 12 is a fitting convex portion 12b separately provided at a facing portion between the second device body 8 and the clamp device 2, and a fitting concave portion 12c that can be fitted into the fitting convex portion 12b. The fitting convex portion 12b and the fitting concave portion 12c are fitted to each other as the clamp device 2 is moved upward relative to the second device main body 8 to fix the postures of the two. And, as a result, the second device body 8 and the clamp device 2
It becomes possible to fix the relative posture with respect to.

Explaining the elevating device 3b, the clamp device 2 can be raised until the fitting part 12a is fitted, and when the fitting part 12a is not fitted, the supporting device is supported. The frame 11 is formed so as to be swingably supported laterally with respect to the second device body 8. Specifically, as shown in the drawing, two airtight bags 13 vertically arranged between the second device 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) capable of supplying / discharging air, which is an example of a lifting fluid. By sending air into the upper airtight bag 13a, the upper airtight bag 13a swells, and the swelling force can raise the support frame 11. The lower airtight bag 13b is filled with a predetermined 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 casting 1. The shock caused by is reduced, and the cushioning function for the clamp device 2 and the cast product 1 clamped by the clamp device 2 is fulfilled.

According to the casting product conveying apparatus S of this embodiment, the supporting frame 11 is disengaged from the fitting portion 12a so as to be swingable in the lateral direction, and the lifting means 3 is moved.
By lowering the second device body 8 to the lower transfer starting point by the second hydraulic cylinder 3a, the tip portion of the upper clamp member 9 is a cast product while the clamp device 2 is in contact with the cast product 1 that is placed. The support frame 11 can be swung so as to fit into the recess 1a of the casting frame 1. In this state, the lower clamp member 10 is swung upward to hold the cast product 1 between the upper clamp member 9 and clamp it. , The clamp device 2 is lifted by the lifting device 3b, and the fitting portion 1
By setting 2a in the fitted state, it becomes possible to hold the cast product 1 in a state where the relative position is fixed with respect to the apparatus main body 4, and it is possible to stably carry out the subsequent carrying work. Further, the casting 1 can be positioned by the upper clamp member 9 during the transportation, the casting 1 can be transported to an accurate position at the end of the transportation, and the casting 1 can be positioned by another process. It is not necessary to carry out the work, and the carrying work can be carried out efficiently.

[Another Embodiment] Another embodiment will be described below.

<1> The conveyed product is not limited to the cylinder head member described in the previous embodiment, but may be a cast product in general, or any other product having a constant shape. These are collectively referred to as a conveyed product.

<2> The elevating device is not limited to the one composed of the airtight bag body 13 and the feeding / discharging device, but is composed of, for example, a hydraulic cylinder, a chain and a rotary drive device capable of winding the chain. The lifting device may be collectively referred to as a lifting device.

<3> When the elevating device is composed of the airtight bag body 13 and the supply / discharge device, the elevating fluid supplied to / discharged from the airtight bag body 13 by the supply / discharge device is the same as in the previous embodiment. The air is not limited to the air described above, but may be water, oil, or the like depending on the application. These are collectively called fluids.

<4> The posture fixing means is not limited to the fitting portion 12a provided in the second device body 8 and the clamp device 2 as described in the above embodiment, and may be, for example, It may be a fitting portion provided on the two device main body 8 and the support frame 11.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a front view showing the operation of a carrying device according to an embodiment.

FIG. 2 is a front view showing the operation of the carrying device according to the embodiment.

FIG. 3 is a side cross-sectional view showing a main part of the carrying device according to the embodiment.

FIG. 4 is a front cross-sectional view showing a main part of a carrying device according to an embodiment.

FIG. 5 is a side sectional view showing the operation of the positioning mechanism.

FIG. 6 is a front sectional view showing the operation of the positioning mechanism.

FIG. 7 is a cross-sectional top view showing an installation state of a hydraulic cylinder for driving a clamp member.

FIG. 8: Top view of cast product

FIG. 9 is a side view showing the carrying device according to the embodiment.

FIG. 10 is a top view showing the carrying device according to the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transported goods 2 Clamping device 3b Elevating device 4 Device main body 11 Support frame 12 Posture fixing means 12a Fitting part 13 Airtight bag body

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Eiji Yoshioka 1-47 Shikitsu Higashi 1-chome Naniwa-ku, Osaka City, Osaka Kubota Corporation (72) Inventor Yoshimasa Shiraishi 2 Takara-cho, Kanagawa-ku, Yokohama, Kanagawa Nissan Inside the automobile corporation

Claims (3)

[Claims] 1. A carrier device comprising a clamp device (2) capable of holding a conveyed object (1) and a lifting device (3b) capable of vertically moving the clamp device (2), A support frame (11) integrally supporting the clamp device (2) is provided so as to be vertically movable with respect to the device body (4) and swingable in the lateral direction. The elevating device (3b) is interposed between the supporting frame (11), and the device body (4) and the clamping device () when the elevating device (3b) raises the clamp device (2). A conveyance device provided with a posture fixing means (12) capable of fixing a relative posture with respect to 2) in a predetermined state. 2. The lifting device (3b) comprises an airtight bag (1).
The transport device according to claim 1, comprising 3) and a supply / discharge device capable of supplying / discharging the lifting fluid to / from the airtight bag body (13). 3. The transport according to claim 1, wherein the posture fixing means (12) is a fitting portion (12a) provided between the device body (4) and the clamp device (2). apparatus.