JPH0321383A - Method and apparatus for washing oil hole after assembling cylinder block and bearing cap - Google Patents

Abstract

PURPOSE:To easily wash an oil hole by providing a means injecting a washing solution and high pressure compressed air from the opening part of the oil hole provided to one end of a bearing cap and injecting high pressure compressed air and the washing solution to the oil hole. CONSTITUTION:A subshaft nozzle 15 and a journal nozzle 16 are respectively inserted in a subshaft hole 102 and a journal hole 110 and the subshaft 15 is bonded to bushes 103-105. A washing solution is continuously injected to the upper oil hole 120 of a bearing cap 101 through the journal nozzle 16 in such a state that a seal material 54 is not brought into close contact with the opening part of the oil hole 120 and, in this state, high pressure compressed air is injected to a small hole 103a through the subshaft 15. Thereafter, the opening part of the oil hole 120 is closed by the seal material 54 while compressed air is injected by a bearing cap nozzle 17 to discharge the chips in the oil hole.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a cleaning method and apparatus for discharging chips from an oil hole in a state where a bearing cap is assembled to a cylinder block.

(Prior Art) Conventionally, as a method for cleaning oil holes, it is known to separate a cylinder block and a bearing cap after assembly and clean them separately. Therefore, after cleaning, the cylinder block and bearing cap must be reassembled.

(Problems to be Solved by the Invention) In the cleaning method described in the prior art, the cylinder block and bearing cap must be reassembled after cleaning, which requires new assembly equipment and space for installing the equipment. This had the problem of causing a decline in quality.

The present invention has been made in view of the above-mentioned problems of the conventional technology, and its purpose is to provide a cleaning method that allows cleaning the inside of the oil hole with the cylinder block and bearing cap assembled. The present invention seeks to provide a method and apparatus thereof.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides a cleaning method for discharging chips adhering to oil holes in a state where a bearing cap is assembled to a cylinder block. Cleaning liquid and high-pressure compressed air are jetted out alternately or simultaneously using an appropriate tie, and the oil hole opening in the bearing cap is closed or opened to shake and agitate the chips in the oil hole. This is to discharge chips.

In addition, the cleaning device includes a plurality of nozzles that eject cleaning liquid and high-pressure compressed air from a plurality of oil hole openings at one end of the bearing cap, and an oil hole opening at the other end of the bearing cap that can be closed or opened by a sealing member. The first function is to insert nozzles into the journal hole and the subshaft hole, and align the oil hole penetrating the hole with the hole provided in each nozzle to eject cleaning liquid and high-pressure compressed air.'s2 It is composed of the following functions.

(Function) The present invention configured as described above discharges chips remaining in the oil hole with the bearing cap assembled to the cylinder block by predetermined jets of high-pressure compressed air, cleaning fluid, and compressed air. (Example) Examples of the present invention will be described below based on the accompanying drawings.

FIG. 1 is an overall front view of a cleaning device for implementing the oil hole cleaning method according to the present invention.

In the cleaning device, the rotating arm 2 fixed to the encyclical shaft 1 is the first
The pallet 3 is configured to be conveyed onto the rotating arm 2 in a horizontal state shown by the two-dot chain line in the figure. and,
The pallet 3 is provided with a knock bin 4 for positioning the workpiece W and a receiving block 5 for receiving the workpiece, and is further provided with a clamp (not shown) for holding the workpiece W from above.

When the loading of the pallet 3 is completed, the rotating arm 2 rotates about 90' around the rotation axis 1 as shown in FIG. Then, the cleaning base 6 is lowered by the actuator 7.
The cleaning base 6 is slidably moved up and down by a guide bar 8 and rollers 9, and is prevented from shaking when lowered by rollers 10 and a guide base 1l. Note that the roller 9 is fixed to a bracket 13 via a bearing 11 and a shaft 12, and the bracket 13 is fixed to a top plate 14.

A subshaft nozzle 15, a journal nozzle 16, and a bearing cap nozzle 17 are attached to the cleaning base 6.

The workpiece W is a cylinder block 100 as shown in FIG.
and a bearing cap 101 are assembled, and a sub-shaft hole 102 is formed in the cylinder block 100, into which pushers 103, 104, 105 are press-fitted. Further, a journal hole 110 is formed at the center of the joint between the cylinder block 100 and the bearing cap 1 (II).

Furthermore, there are multiple oil holes 12 in the bearing cap lot.
0 is formed, and all of the respective oil holes 120 communicate with each other, and also communicate with the subshaft hole 102 and the journal hole 110.

The subshaft nozzle 15 is a nozzle that blows out high-pressure compressed air, and is positioned by a knock bottle 20 and fixed to a block 22 with bolts 21, as shown in FIG. The block 22 has one end fixed to a rotating fulcrum pin 24 fixed to the cleaning base 6 via a bearing 23, and the other end attached to a piston 26 via a pin 25. Further, the sub-shaft nozzle 15 is provided with 3PJ sealing materials 30, 31.
32 are fitted together, and as shown in FIG. The spout 30b and the spout 15b of the sub-shaft nozzle 15 are arranged to match. The sealing materials 30, 31, and 32 are made of urethane rubber or the like, which has high elasticity and excellent durability. Furthermore, in order to prevent the subshaft nozzle 15 from bending, an auxiliary pressing mechanism is provided by an actuator 35 and a clamp piece 36, as shown in FIG.

The journal nozzle 16 is positioned with a dowel pin 38 and fixed to the cleaning base 6 with a bolt 39, as shown in FIG. W oil hole 1
A plurality of spout ports 40 are formed for spouting water to the pipes 20. FIG. 6 shows the bearing cap nozzle 17 and the bearing cap cleaning mechanism. The bearing cap nozzle 17 is slidably inserted into a guide post 50 fixed to the cleaning base 6, and an oil hole 120 is formed in the upper end surface of the bearing cap 101 by a compression spring 51.
Seal rubber 52 fixed to the tip of nozzle 17 at the opening of
is pressing. Such a nozzle 17 is connected to the oil hole 12
They are arranged according to the number of 0's. The cleaning liquid and compressed air are supplied through the guide par 8, distributed to each bearing cap nozzle 17 via the cleaning base 6 and distribution block 53, and supplied to each oil hole 12G of the bearing cap 101. On the other hand, bearing cap 1
The opening of the oil hole 120 below 01 is sealed by a sealing material 54, and the sealing material 54 is attached to the tip of a shaft 57 that is slidably fitted into the guide post 55. Further, the guide post 55 is fixed to the pallet 3 via a bracket 58. The rear end of the shaft 57 is connected to another shaft 57 by a connecting plate 59. The connecting plate 59 includes a sealing material 54 and a contact plate 60, and a compression spring 61.
is urged downward by. Further, an actuator 63 is disposed from the rotating arm 2 via a bracket 62, and a butt 64 is attached to the tip of the rod of the actuator 63.

Therefore, the actuator 63 moves the pallet 64 onto the plate 60.
By pressing the bearing cap 101, the opening of the oil hole 120 below the bearing cap 101 is closed or opened by the sealing material 54. In addition, the oil hole 120 on the side of the bearing cap 101
The opening is closed with a sealing material 66 attached to the tip of a bracket 65 fixed to the pallet 3. The state in which each nozzle 15, 16 is inserted into the workpiece W is shown in FIG. Here, one of the pair of subshaft nozzles 15 shows the position when the nozzle 15 is inserted, and the other shows the state where it is adhered to the pusher 103 after insertion. Such movement of the subshaft nozzle 15 is performed by the movement of the piston 26 shown in FIG. It communicates with the oil hole 120.

At this time, the auxiliary pressing mechanism consisting of the actuator 35 and the clamp piece 36 shown in FIG. 3.8.9 pushes the clamp piece 36 along the two-dot chain line as shown in FIG. By pressing the subshaft nozzle 15 to the position of , the three types of sealing materials 30, 31, and 32 are
Each of the spout ports 30b, 31b, 32b and the push 10
3, 104, 105, each small hole 103a, 104a
, 105a to ensure communication between the inside of the subshaft nozzle 15 and the oil hole 120. Furthermore, 3 1
b, 3 2 b. 104a and 105a are not shown. Further, since the diameter of the journal hole 110 of the workpiece W is relatively large, the journal nozzle 16 is cleaned without adhering to the inner peripheral surface of the journal hole 110, as shown in FIG.

FIG. 10 shows a circuit diagram of the cleaning liquid and compressed air. The cleaning liquid pumped up from the cleaning tank 69 by the cleaning pump 70 flows into the mixer 73 via the check valve 71 and the solenoid valve 72. On the other hand, the high-pressure compressed air generated by the air compressor 74 accumulates in a surge tank 75 and flows into the mixer 73 via a filter 76, a regierator 77, and a solenoid valve 78. Further, compressed air from the factory air source 80 is filtered through a filter 81.
It flows into the mixer 73 via the surge tank 82, regulator 83 and solenoid valve 84. In these mixers 73, the cleaning liquid and high-pressure compressed air, and the cleaning liquid and high-pressure air are mixed, respectively, and further supplied to each nozzle 15, 16, 17 via the guide bar 8 and the cleaning base 6. In the wood example, the pressure of the cleaning liquid was 3 to 5 kg/cm', the high pressure compressed air pressure was 9 to 10 kg/cm', and the compressed air pressure was 4 to 6 kg/cm'.
kg/cm".

Using the cleaning device configured as described above, the subshaft nozzle 15 and the journal nozzle 16 are inserted into the subshaft hole 102 and the journal hole 11f, respectively, as shown in FIG. and push small holes 10 of 103, 104, 105
Seal material 30.31.32 on 3a, l04a, 105a
Glue the spout ports 30b, 31b, and 32b. Also,
As shown in FIG. 6, the bearing cap nozzle 17 is also brought into close contact with the opening of the oil hole 120 of the bearing cap 101 via the seal rubber 52.

In such a state, as a first embodiment, the journal nozzle 1 is first opened in an open state in which the sealing material 54 is not brought into close contact with the opening of the oil hole 120 below the bearing cap 101.
The oil hole 12 is perpendicular to the journal hole 110 via 6.
0 and the bearing cap nozzle 17 to the oil hole 120 above the bearing cap 101, and the small holes 103a, 1 of the push 103, 104, 105 through the sub-shaft nozzle 15.
(Blowout of high pressure compressed air to 14a, 105a and bearing cap 10 through bearing cap nozzle 17)
1. After simultaneously blowing compressed air to the upper oil hole 120 for a certain period of time, it is stopped and at the same time, the journal nozzle 1
6 intermittently blows out compressed air, then blows out compressed air from the bearing cap nozzle 17, then closes the sealing material 54 at the opening of the oil hole 120 below the bearing cap 101, and closes the notch in the oil hole 120. Shake and stir the powder together with the cleaning solution, then apply the bearing cap 1.
(The sealing material 54 at the opening of the oil hole 120 below 11 is released, and high-pressure compressed air is jetted from the subshaft nozzle 15 to discharge the chips remaining in the oil hole 120 to the outside of the workpiece W together with the cleaning liquid.)

As a second embodiment, in the first embodiment, the small holes 103a, 104a . While the high-pressure compressed air was jetted discontinuously to the IQ5a, in this example it was jetted continuously. Other details were the same as in Example 1.

As Example 3, in Example 1, only high-pressure compressed air was ejected through the sub-shaft nozzle 15 to the small holes 103a, 104a, 105a of push 103, 104.1 (15), whereas in this embodiment In this example, the cleaning liquid was continuously ejected from the sub-shaft nozzle 15, and the ejection timing of high-pressure compressed air was the same as in Example 1.Other aspects were the same as in Example 1.

This embodiment shows a part of the valve, but depending on the size and shape of the workpiece, the size, length, and shape of the oil hole, there may also be a cleaning solenoid valve 72, a high-pressure compressed air solenoid valve 78, a compressed air solenoid valve, etc. This can be achieved by driving the valve 84 and the actuator 63, which opens and closes the opening of the oil hole 120 below the bearing cap 1 (II) using the sealing material 54, under optimal conditions.

(Effects of the Invention) As explained above, according to the present invention, chips remaining in the oil hole can be cleaned without dividing the cylinder block and the bearing cap after the cylinder block and the bearing cap are assembled.

Further, there is no need to take up a large installation space for the washing machine, and it is possible to prevent quality deterioration due to separate washing and incorrect assembly of the cylinder block and bearing cap.

[Brief explanation of the drawing]

Fig. 1 is an overall front view of a cleaning device for carrying out the cleaning method according to the present invention, Fig. 2 is a cross-sectional view of a workpiece, Fig. 3 is a cross-sectional view of a sub-shaft nozzle, and Fig. 4 is a cross-sectional view of a sub-shaft nozzle. 5 is a sectional view of the journal nozzle, 6 is a plan view of Ichiro's sectional view of the bearing cap cleaning mechanism, 7 is a sectional view of the workpiece when the nozzle is inserted, and 8 is 9 is a view taken in the direction of arrow A in FIG. 3, FIG. 9 is a view taken in the direction of arrow B in FIG. 3, and FIG. 10 is a circuit diagram of cleaning liquid and compressed air. In addition, in the drawing, 15 is a sub-shaft nozzle! 6 is a journal nozzle, 17 is a bearing cap nozzle, 54 is a sealing material, 100 is a cylinder block, 101 is a bearing cap, 102 is a subshaft hole, 103, 10
4,105 is push, 110 is journal hole, 12G
is an oil hole.

Claims (2)

[Claims] (1) In a cleaning method for discharging chips adhering to an oil hole when a bearing cap is assembled to a cylinder block, cleaning liquid and high-pressure compressed air are jetted from the oil hole opening at one end of the bearing cap. It has means for closing or opening the oil hole opening at the other end, and means for spouting cleaning liquid and high-pressure compressed air into the oil hole penetrating the journal hole and the subshaft hole. By jetting cleaning liquid and high-pressure compressed air into the hole alternately or simultaneously at appropriate timing, and closing or opening the oil hole opening of the bearing cap, the chips in the oil hole are shaken and agitated to cut the chips. A method for cleaning oil holes after assembling a cylinder block and bearing cap, which is characterized by discharging powder. (2) A cleaning device for discharging chips adhering to an oil hole when a bearing cap is assembled to a cylinder block. A plurality of nozzles for ejecting air and a first function capable of closing or opening an oil hole opening at the other end of the bearing cap with a sealing member, and inserting the nozzles into a journal hole and a subshaft hole, It has a second function of spouting cleaning liquid and high-pressure compressed air by aligning the oil hole penetrated through the hole with the hole provided in each nozzle, and the cleaning liquid and high-pressure compressed air are alternately jetted from these multiple nozzles. Alternatively, at the same time, the chips in the oil hole can be swung and agitated by ejecting at appropriate timing and closing or releasing the sealing member at the oil hole opening of the bearing cap in a timely manner to discharge the chips. Features an oil hole cleaning device after assembling the cylinder block and bearing cap.