JPS6012682Y2 - Circulation device for tightening blocks for cylinder head processing - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a circulation device for a tightening block for machining a cylinder head in an automobile engine.

Machining of the camshaft hole 5 formed in the cylinder head 3 fixed on the engine block of the automobile shown in FIG. When doing this, place the tightening block 7 on the lower side of the cylinder head 3 as shown in Fig. 4 on the input side of the processing line, and tighten the three members, the camshaft cap 4, the cylinder head 3, and the tightening block 7, with the bolts. The blocks are integrally connected by a tightening member 8 such as the one shown in FIG. Although the tightening block 7 is returned to the import side and reused for circulation, conventionally, the tightening block 7 has been returned manually, resulting in a problem of poor workability.

This idea was devised in view of the above problems, and uses a return conveyor to improve work efficiency, as well as a tightening block for cylinder head machining that allows the conveyor to be driven only when necessary to save energy. The purpose is to provide a circulation device for

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

1 and 2, 1 is a processing line, 2 is a return conveyor, and the return conveyor 2 is provided at a higher location than the above-mentioned processing line 1.

The left end in the figure is the receiving side A, and the right end is the discharge side B, and is driven in the direction of arrow C.

The processing line 1 includes a cylinder head 3 as shown in FIG.
and a camshaft cap 4 attached to the top surface of this cylinder head 3.
This is a line for processing the cylinder head 3, in other words, processing equipment (not shown) is arranged along the processing line 1, and a mounting means 6 provided on the loading side thereof. For example, a tightening block 7 as shown in FIG. 3 is applied to the lower side of the cylinder head 3, and the three members of the camshaft cap 4, cylinder head 3, and tightening block 7 are assembled as shown in FIG. They are joined together with a tightening member 8 such as a bolt, fed onto the processing line 1, moved in the direction of arrow E, subjected to the specified processing, and carried out to the extraction side F, and at this F position. The tightening block 7 is removed from the cylinder head 3 by the removing means 9, and the tightening block 7 is circulated to the input side of the processing line 1 by the operation of the transfer means 10 and the return conveyor 2.

The transfer means 10 is provided on the side of the receiving side A of the return conveyor 2, and is carried out to the take-out side F of the processing line 1 and removed from the cylinder head 3 by the operation of the removing means 9, as described above. It is for transferring the removed tightening block 7 onto the return conveyor 2, and is composed of a tightening block receiving mechanism 11, a pair of transfer mechanisms 12, 13, and a lifting mechanism 1.

The tightening block receiving mechanism 11 is provided correspondingly to the lower side of the above-mentioned removing means 9, and includes a drive section 11a, a conveyor llb that moves by the forward and reverse repetitive motion of the drive section 11a, and a position where it is attached to the conveyor llb and is indicated by a solid line G. and a receiving arm portion 11c that reciprocates up and down between the positions shown by the imaginary line H.

One of the transfer mechanisms 12 consists of a cylinder that protrudes and retracts in the directions of arrows ■ and J, and when the receiving arm portion 11c is at the solid line position G, it corresponds to the tightening block 7 placed on its receiving surface 11d. set in position.

The elevating mechanism 14 is an elevator 14 that moves up and down between the position shown by the solid line and the position shown by the imaginary line along the support 14b by the forward and reverse repetitive motion of the driving part 14a and the driving part 14a.
The mounting surface 14d when the elevator 14c is at the position shown by the solid line is set at the same height as the receiving surface lid of the receiving arm section 11C at the solid line G position, and the rail 15 is set between I am intervening.

The other transfer mechanism 13 consists of a cylinder that protrudes and retracts in the directions of arrows M and N, and when the elevator 14c is on the imaginary line,
The tightening block 7 placed on the placement surface 14d is set at a position corresponding to the tightening block 7 placed on the placement surface 14d, and the tightening block placed on the placement surface 14d is moved by projecting in the direction of arrow N. 7 is slid onto the rail 16 and transferred to the receiving side A of the return conveyor 2.

A chute 17 is provided on the discharge side B of the return conveyor 2 to allow the tightening block 7 to fall under its own weight and guide it to the attachment means 6 provided on the input side of the processing line 1.
In other words, a first detection means 18 such as a photodetector is provided on the discharge side B of the return conveyor 2 to detect the presence or absence of the tightening block 7, and a light detection means 18 is also provided on the receiving side A to detect the presence or absence of the tightening block 7. A second detection means 19 such as a container is provided.

Based on the signal from the first detection means 18, the tightening block 7 continuously drives the return conveyor 2 in the direction of the arrow C until a constant amount is always secured in the storage part P on the discharge side B1, that is, the chute 17. The rain detection means 18 and 19 are connected to a control means (not shown) so that the return conveyor 2 is driven in one direction of arrow C for a certain period of time based on a signal from the second detection means 19.

In the above configuration, the cylinder head 3, the camshaft cap 4, and the tightening block 7 are integrally connected by the tightening member 8 by the operation of the attachment means 6, and then the processing line starts from the input side of the processing line 1. 1 was brought in,
While moving on the line in the direction of arrow E, it is subjected to predetermined processing and is carried out to the removal side F, reaching a position corresponding to the removal means 9.

Once the above-mentioned position is reached, the removal means 9 is operated to remove the clamping block 7 from the underside of the cylinder head 3, but before being removed in this way, the clamping block receiving mechanism 11 is Since the arm portion 11c is waiting at the position indicated by the imaginary line H, the removed tightening block 7 is received on the receiving surface lid.

The receiving state of the tightening block 7 is detected by a detection means (not shown), and the detection signal is used to operate the drive section 11a to lower the receiving arm section 11c to the solid line G position.

Next, one of the transfer mechanisms 12 operates to project in the direction of the arrow.

Due to this protruding action, the clamping block 7 on the receiving surface 11d is pushed out in the direction of the rail 15, and the clamping block 7 on the receiving surface 11d is already
The mounting surface 14d of the elevator 14c is waiting for the front tightening block 7 located at the tip side of the elevator 14c at the position indicated by the solid line.
place it on top.

The above-mentioned placement state is detected by a detection means (not shown), and the drive unit 14a is operated by the detection signal, and the elevator 14
c is raised along the support 14b to the position shown by the imaginary line.

Subsequently, the other transfer mechanism 13 moves in the direction of arrow M to push out the clamping block 7 on the mounting surface 14d of the elevator 14c in the direction of the rail 16, and
The front tightening block 7 located on the tip end side of 6, that is, on the return conveyor 2 side, is transferred to the receiving side A of the return conveyor 2.

Through the above procedure, the tightening blocks 7 are sequentially transferred to the receiving side A of the return conveyor 2, but these tightening blocks 7 are detected by the second detection means 19, and the detection signal causes the return conveyor 2 to be Drive by a predetermined pitch in the C direction.

By driving the return conveyor 2, the tightening block 7 located on the discharge side of the conveyor 2 reaches the top of the chute 17, falls on the chute 17 under its own weight, and reaches the outlet 17a side of the chute 17, that is, the storage section P. stored.

The stored tightening blocks 7 are sequentially moved to the mounting means 6 side according to the operation of the mounting means 6, and are mounted on the lower side of the cylinder head 3 in the same manner as described above.

When the tightening block 7 is sequentially moved to the attachment means 6 side and the amount stored in the storage portion P in the chute 17 becomes less than a predetermined amount, the first detection means 18 detects this and determines the fixed amount based on the detection signal. The return conveyor 2 is driven until the amount is reached, and the tightening block 17 on the chute 17 is always maintained in a constant state.

Although the above embodiment describes an example in which the tightening blocks 17 are transferred one by one, this invention may be configured to transfer a plurality of tightening blocks (for example, three) in parallel at the same time.

As explained above, this invention is configured so that the tightening block removed by the removal means is automatically circulated to the installation means, so the workability is significantly improved, and
Since the return conveyor is controlled to be driven only when necessary by the first and second detection means, there are advantages such as distant energy saving.

[Brief explanation of the drawing]

Fig. 1 is an overall schematic side view of the circulation device according to this invention, Fig. 2 is an enlarged explanatory view of the removed portion, and Fig. 3 is a perspective view showing an example of a tightening block circulated by the device according to this invention. FIG. 4 is an explanatory diagram of a state in which the three members are integrated. 1...Processing line, 2...Return conveyor, 3...Cylinder head, 4...
Camshaft cap, 7...Tightening block,
10...Transfer means, 17...Chute, 18...First detection means, 19...Second detection means, A...・Receiving side of the conveyor, B...
...Discharge side of the conveyor.

Claims (1)

[Scope of utility model registration request] When machining cylinder heads, the tightening block of the cap is used in circulation, and there is a conveyor for returning the tightening block installed at a position higher than the processing line, and a tightening block installed on the tightening block discharge side of this conveyor. a first detection means for detecting the presence or absence of the tightening block; a second detection means provided on the tightening block receiving side of the conveyor for detecting the presence or absence of the tightening block; control means for controlling the conveyor to continuously drive the conveyor until a certain amount or more is secured, and driving the conveyor for a certain period of time based on the signal from the second detection means; A circulation device for tightening blocks for cylinder head processing, comprising a transfer means for placing the blocks, and a chute provided on the discharge side of a conveyor to drop the tightening blocks under their own weight.