JPH05345232A - Parts assembling pallet - Google Patents

Abstract

PURPOSE:To surely hold loaded and supported parts by providing a plurality of clamp mechanisms for positioning and clamping loaded parts on a pallet plate. CONSTITUTION:A part A is loaded and supported on a pallet plate 5, and when one lever 34 of a clamp operation mechanism 30 is operated in such a condition, all of plural clamp mechanisms 18 conduct clamp operation collectively to press the part A in plural places and surely hold the same on the pallet plate 5 without shifting and slip-off. On the other hand, when one lever 34 of the clamp operation mechanism 30 is operated reversely to the above, all of the plural clamp mechanisms 18 conduct unclamp operation collectively. Accordingly, the operation of the plural clamp mechanisms 8 can be facilitated so as to improve work efficiency and reduce any error such as forgetting to operate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pallet for assembling parts, which is mainly used for sub-assembly work of a No. 2 cross member of an automobile, and more particularly, accurately positions equipments mounted and supported so as to facilitate the assembly work. The present invention relates to a component assembling pallet having a plurality of clamping mechanisms for clamping.

[0002]

2. Description of the Related Art A number 2 (front) cross member (hereinafter simply referred to as "cross member") is mounted and supported on a dedicated pallet as one of automobile parts assembling work.
There is a sub-assembly work in which a pair of left and right lower arms for supporting wheels are mounted on the cross member and a steering linkage is mounted on the cross member while being carried on a conveyor. The left and right lower arms are attached to this cross member by tightening a single shaft pin bolt and nut. The steering linkage is attached to the cross member by hugging the brackets at two places on the left and right sides and tightening these brackets to the cross member with four bolts and four nuts.

During such assembling work, the mounting directions of the left and right lower arms and the steering linkage are often different from each other by 90 degrees with respect to the cross member. Therefore, it is necessary to rotate the cross member to change the direction.・ Indispensable for tightening nuts.

For this reason, in the conventional pallet, brackets are erected on both left and right ends on the base, and pallet plates for supporting and mounting parts are rotatably mounted between the left and right brackets via a rotary shaft, and the pallet is rotated. A rotation operation handle is provided at one end of the shaft, and a lock device for positioning and locking the rotation of the rotation shaft at a plurality of predetermined angular positions is provided.

Then, a cross member is mounted and supported on a pallet plate which is locked and held in a predetermined direction, the left and right lower arms are set on the cross member, and the bolts and nuts are tightened using a nut runner from directly above. Then, the left and right lower arms are fastened to the cross member.
After that, release the lock device, rotate the rotation operation handle, rotate the pallet plate 90 degrees through the rotation axis to position lock, and change the direction of the cross member, and in this state, change the steering linkage to the cross member. The bracket and the bracket are set, and a nut runner is used from just above to tighten the bolt and nut to fasten the steering linkage to the cross member.

By the way, in such a part assembling work, as described above, the pallet plate of the pallet on which the cross member is mounted and supported is inverted from the upward state to the horizontal state, and the mounting angle of the steering linkage with respect to the cross member is changed to the rear steering. Since it is necessary to ensure sufficient accuracy in connection with the shaft, it is necessary to accurately position and hold the cross member on the pallet plate without shifting or dropping. For this reason, a work reference positioning locator is provided, and a plurality of clamping mechanisms for holding the cross member are provided.

[0007]

However, in the above-described conventional component assembling pallet, there are a plurality of clamp mechanisms for holding and positioning and holding the work mounted and supported on the pallet plate. Workers had to reach out and individually operate the clamp and unclamp operations of the mechanism, which was cumbersome and inefficient, and also operated some of the multiple clamp mechanisms. Forgetting to do so, there is a possibility that the positioning and holding of the cross member may be incomplete, or that the unclamping operation may be forgotten and the work may not be supplied to the next process.

The present invention has been made in view of the above circumstances. An object of the present invention is to make it possible to securely hold components mounted and supported by a plurality of clamp mechanisms, and to perform clamping and unclamping operations of the plurality of clamp mechanisms with one lever. To provide a pallet for parts assembly with excellent operability that can be easily carried out in a batch by operation, can improve work efficiency and reduce mistakes such as forgetting operations, and contribute to efficiency of parts assembly work. It is in.

[0009]

In order to achieve the above-mentioned object, a pallet for assembling parts of the present invention is provided with a plurality of clamping mechanisms for positioning and clamping mounted parts on a pallet plate, and these clamping mechanisms are provided. The present invention is characterized in that a clamp operation mechanism that interlocks with each other to perform clamp and unclamp operations by one lever operation is provided.

[0010]

According to the component assembling pallet having the above-described structure, the components are mounted and supported on the pallet plate, and if one lever of the clamp operating mechanism is operated in this state, the plurality of clamp mechanisms collectively perform the clamp operation. Then, the parts are held at a plurality of points and securely held against the pallet plate so as not to slip or drop. Further, if one lever of the clamp operating mechanism is operated in the opposite manner to the previous time, all of the plurality of clamping mechanisms will be collectively unclamped. For this reason, the operation of the plurality of clamp mechanisms becomes very simple, the work efficiency can be improved and mistakes such as forgetting the operation can be reduced, which can contribute to the efficiency of the parts assembling work.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a pallet for assembling parts of the present invention will be described below with reference to the drawings. 1 is a plan view, FIG. 2 is a front view, FIGS. 3 (a) and 3 (b) are side views in an upward state and a sideways state, and FIGS. 5 (a) and 5 (b) are a rear view and a sectional view of a clamp mechanism portion. is there.

First, in FIGS. 1 to 3, reference numeral 1 denotes a base of a pallet, which has a rectangular plate shape and is horizontally conveyed by being placed on a conveyor (not shown) in an assembly line. A pair of left and right brackets 2 made of an angle member are erected on the center 1 near the front side of the base 1, and the bearing member 3 extends rearward from the upper part of the left and right brackets 2.
Are provided in a protruding manner, and the shafts 4 are rotatably provided at the rear end portions of the left and right bearing members 3 via bearings on the same horizontal axis.

Reference numeral 5 in the drawing denotes a pallet plate for supporting and mounting parts.
The pallet plate 5 is a flat U-shaped flat plate that faces forward and is slightly smaller than the cross member A that is a component to be mounted. The pallet plate 5 is long in the front-rear direction at the left and right edges of the front recess.
a is installed upright, and the upper ends of the left and right support plates 5a are fitted to the left and right shafts 4 so that the pallet plate 5 as a whole moves from a horizontal upward state by its own weight around the shafts 4. It is rotatably mounted in a vertical sideways (backward) position.

Further, there is provided a lock device 6 for restricting the rotation of the pallet plate 5 to positionally lock the pallet plate 5 in a horizontal upward state and a vertical horizontal state. The lock device 6 includes an unlock operation lever 7 having a grip portion 7a at a rear end thereof, an interlocking link 8, a lock pin 9, and a lock spring 10. The unlock operation lever 7
Is arranged on the upper surface of the base 1 in the front-rear direction and is pivotally attached to the center of the base 1 by a pin 11 so as to be horizontally rotatable. The lower end portion of the interlocking link 8 is engaged with the front end U-shaped portion of the unlock operation lever 7. As shown in FIG. 2, the interlocking link 8 is pivotally attached to a support plate 2a at an intermediate height of a left bracket 2 standing on a base 1 via a pin 12 so as to be rotatable in the left-right direction on a vertical plane. ing. A support arm 13 is provided so as to project rearward from the upper end of the interlocking link 8, and the lock pin 9 is connected to the rear end of the interlocking link 8 so as to be orthogonal to each other. The lock pin 9 penetrates the bearing member 3 above the bracket 2 and is fitted into either of the lock holes 5b and 5c of the support plate 5a of the pallet plate 5 so as to be retractable.
The pallet plate 5 is positionally locked in a horizontal upward state and a vertical horizontal state.

Further, the lock spring 10 is stretched between the lower end side portion of the interlocking link 8 and the bracket 2 on the right side, and the lock spring 10 locks the lock pin 9 through the interlocking link 8. 5b (5c) is always urged in a direction to be fitted, and the pallet plate 5 is rotated so that self-locking works.

Reference numeral 14 in the drawing is a stopper provided so as to project to the outer side of the left bracket 2 and is received when the pallet plate 5 is rotated in a horizontal upward state, so that it is received. Further, reference numeral 15 in the drawing denotes a stopper attached to the rear surface side of the right bracket 2 and receives the pallet plate 5 so as not to rotate further when the pallet plate 5 is rotated in a vertical sideways state.

Here, the pallet plate 5 has a work reference positioning locator 16 on the left and right edges of the upper surface of the pallet plate 5 so that the cross member A, which is a component to be mounted, can be precisely positioned and mounted and supported on the upper side of the pallet plate 5. Are respectively projected, and these are fitted into the processed holes of the cross member A. Further, L-shaped fixed receiving pedestals 17 are erected at right and left portions on the rear edge of the upper surface of the pallet plate 5 so as to receive the left and right edges of the rear end side edge of the cross member A. Further, a clamping mechanism 18 for clamping the front end side edge of the cross member A to the left and right is provided.

The clamp mechanism 18 is attached to each of two locations (left and right front end corners) of the pallet plate 5,
Fixed pedestal 19 and brackets 20a and 20b
It is provided with a clamp claw 21 which is rotatably supported between the clamp claw 21 and a toggle link 22 for rotating the clamp claw 21 in the forward and reverse directions.

The clamp mechanism 18 is shown in FIG.
More specifically, by (b), there is a pedestal 19 having a substantially triangular shape which is fixed to the upper surface of the pallet plate 5 and receives the cross member A from below, and a pair of brackets 20a, 20b obliquely positioned near the front side. Are erected parallel to each other, and a clamp claw 21 having a substantially inverted L shape is rotatably attached between the brackets 20a and 20b by a horizontal shaft 23. The lower part of the clamp claw 21 extends downward through the hole of the pallet plate 5, and the tip of the toggle link 22 is pivotally connected to the lower end of the clamp claw 21 by a pin 24. The base end of the toggle link 22 is pivotally connected to the tip of a rotating arm 35 of a clamp operating mechanism 30 described later by a pin 25, and the imaginary line shown in the drawing shows the vertical movement of the rotating arm 35. By rotating between the state and the solid line state, the clamp claw 21 can be rotated in the clamping direction (closing direction) and the unclamping direction (opening direction). The clamp claw 21 is clamped (rotated in the closing direction) to hold the flange portion of the cross member A so as to be sandwiched between the flange portion and the pedestal 19.

Further, the clamp claw 21 has a concave groove at the tip thereof, in which a pressing plate 26 is pivotally mounted by a shaft 27, and a pressing spring 28 for pushing out the pressing plate 26 is provided. is doing. The pressing member 26 presses the cross member A so that the rear end side edge of the cross member A is pushed into the concave groove portion of the rear fixed pedestal 17.

A clamp operating mechanism 30 is provided which interlocks the two right and left clamping mechanisms 18 having such a structure to perform clamping and unclamping operations collectively by one lever. This clamp operating mechanism 30
On the lower surface of the pallet plate 5, a pair of rotating shafts 32 arranged in reverse V-shapes via a plurality of bearings 31, a miter gear 33 attached to the rear ends of these rotating shafts 32 and meshing with each other, and one of them The operation handle 34 is provided so as to project upward from the rear end portion of the rotary shaft 32. A rotary arm 35 is attached to the front ends of the left and right rotary shafts 32 so as to rotate integrally, and the tip of the rotary arm 35 is attached to the base end of the toggle link 22 of the clamp mechanism 18 at the two left and right positions described above by the pin 25. It is pivotally connected by.

In FIG. 1 and FIG. 3, B in the drawings shows a pair of left and right lower arms for supporting wheels which are accessory parts of a cross member sub-assembly of an automobile, and each has a shaft pin-shaped bolt and nut. It is attached to the left and right parts of the cross member A by tightening. In the figure, C indicates a steering linkage that is also attached to the cross member A. The brackets D are held at two places on the left and right, and both brackets D are fastened to the cross member A by four bolts and nuts in the left and right directions. Mounted across. Incidentally, E in FIG. 3 is a rotary valve with an input shaft provided in the steering linkage C.

Reference numeral 40 in the drawing denotes stoppers provided upright on the left and right sides of the rear portion of the base 1, respectively.
Receives the tip of the input shaft of the rotary valve E of the steering linkage C when it is rotated vertically to the side.

According to the pallet for assembling parts having such a structure, when the pallet is placed on the conveyor of the assembly line and conveyed to a predetermined position, the cross member A is placed on the upper surface of the pallet plate 5 which is locked and held in the horizontal state of the pallet. To support. At this time, the left and right workpiece reference positioning locators 16 are fitted into the machining holes of the cross member A, and the operation handle 34 of the clamp operation mechanism 30 is pivotally operated so as to be tilted to the right, so that both rotary shafts 32 are moved. Rotate in conjunction with each other via the rotation shafts 32, and the rotation arms 35 at the tips of both rotation shafts 32 rotate the toggle links 22 of the left and right clamp mechanisms 18 to rotate the respective clamp claws 21 in the closing direction. With these clamp claws 21, the flange portion of the front end side edge of the cross member A is clamped between the pedestal 19 and the front end side edge of the cross member A, and at the same time, the cross member A is pushed by the pressing plate 26 pushed by the pressing spring 28. By pushing the rear end side edge of the cross member A to the rear fixed pedestal 1
Push it into the groove of 7. As a result, the cross member A is accurately positioned and held without being displaced or dropped at the specified position on the pallet plate 5.

In this state, a pair of left and right lower arms B are set on the left and right portions of the cross member A, and the left and right lower arms B are fixed to the left and right of the cross member A by tightening one shaft pin bolt and one nut. Install on the part.

After this, the unlocking lever 7 of the lock device 6 for the pallet plate 5 is pivotally operated to retract the lock pin 9 against the lock spring 10 and pull it out of the lock hole 5b of the support plate 5a. When the pallet plate 5 is in the unlocked state, the pallet plate 5 carries the cross member A while being mounted and supported, and from the horizontal upward state shown in FIG. 3 (a) to the vertical horizontal (backward) state shown in FIG. Rotate to hit the stopper 15. Here, the unlocking lever 7 of the lock device 6 is released to be free so that the lock spring 9 of the lock device 6 biases the lock pin 9 through the interlocking link 8 to lock the lock hole of the support plate 5a. 5
The pallet plate 5 is automatically fitted into the c and self-locked.
Positioning lock in the vertical sideways state.

In this state, as shown in FIG. 3 (b), the steering linkage C is set on the cross member A, the brackets D are hugged at the two positions on the left and right, and the nut runner ( (Not shown)
Tighten and fix to the cross member A by using four bolts and nuts.

After the left and right lower arms B and the steering linkage C are attached to the cross member A mounted and supported on the pallet plate 5 in this manner, the cross member sub-assembly product is conveyed to the next assembly process by the conveyor while being placed on the pallet. Then, while releasing the locking device 6, the pallet plate 5 is rotated and returned to the horizontal upward state, and the operation handle 34 of the clamp operation mechanism 30 is rotated so as to be raised to the left so that the clamp claws 21 of the left and right clamp mechanisms 18 are moved. Open and unclamp. Then, although not shown, the cross member subassembly product is picked up from the pallet plate 5 by an automatic feeder or the like and carried to the next assembly process. The pallet thus emptied is returned to the initial position by the conveyor and reused for the cross member subassembly work.

[0029]

Since the component assembling pallet of the present invention is constructed as described above, the components mounted and supported can be reliably held by the plurality of clamping mechanisms, and the clamping and unclamping operations of the plurality of clamping mechanisms can be performed. It is possible to easily carry out the operation with one handle at a time, and it is possible to improve the work efficiency and reduce mistakes such as forgetting the operation, thereby contributing to the efficiency of the parts assembly work.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a parts assembly pallet of the present invention.

FIG. 2 is a front view of the embodiment.

FIG. 3A is a side view when the pallet plate of the component assembling pallet of the above embodiment is positionally locked in a horizontal upward direction, and FIG. 3B is a side view when the pallet plate is positionally locked in a vertical horizontal direction. Side view.

FIG. 4A is a rear view of the clamp mechanism portion of the above embodiment, and FIG. 4B is a central sectional view of the clamp mechanism portion.

[Explanation of symbols]

5 ... Pallet plate, 18 ... Clamp mechanism, 30 ... Clamp operating mechanism, 34 ... Operating handle, A ... Cross member.

Claims (1)

[Claims] 1. A pallet for assembling components, which is used to mount and support components and perform work such as assembly of accessories,
A plurality of clamping mechanisms for positioning and mounting the mounted parts on the pallet plate are provided, and a clamping operation mechanism that interlocks these clamping mechanisms to perform clamping and unclamping operations with a single handle operation is provided. A pallet for parts assembly characterized in that