JPH04179832A - Rust-preventive oil removing device for cylinder block - Google Patents

Abstract

PURPOSE:To ensure a safe and mechanical holding of a cylinder block to enhance safety of a rust-preventive oil removing operation, by constituting a rust-preventive oil removing device for a cylinder block of a cylinder block holding device and a rotating base. CONSTITUTION:A rust-preventive oil removing device 1 for a cylinder block has a cylinder block holding means 2 and a rotating base 3. The holing means 2 is intended for mechanically fixing and holding a cylinder block, and is constituted of an air pressure cylinder 5, a cubic cam 6, a holding member 8 and a pressing member 9. Further, the rotating base 3 is intended for rotating the cylinder block mechanically fixed and held by the holding means 2, and has rotatably disposed thereon a pair of rotating plates 28, 29 integrally connected, by support columns 10, 16, 18, to each other on rollers 26 rotatably mounted on a base stand 25. This construction permits the cylinder block to be rotated to thereby cause drop-down of rustproof oil, so that the rustproof oil removing operation can be greatly increased in terms of safety.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is directed to the prevention of engine cylinder blocks.
This is related to rust and oil removal equipment, in particular, by rotating the cylinder block while mechanically fixing it, and removing the cylinder in an extremely short time and safely, regardless of the shape and size of the cylinder block, the number of machined holes, etc. This invention relates to a rust preventive oil removal device that drips and removes rust preventive oil adhering to blocks.

Conventional engine cylinder blocks have screw holes and mounting holes drilled from all directions, and are intricately machined and have intricate shapes.

Cylinder blocks that have been processed in various ways are treated with anti-corrosion treatment by immersing them in anti-rust oil stored in an anti-rust oil tank and applying anti-rust oil to prevent the occurrence of rust, but during the assembly process Before doing so, it is necessary to remove the rust preventive oil that has adhered to the cylinder block.

The conventional method for removing rust preventive oil was to use a vacuum pump to suck up the rust preventive oil. The disadvantage is that it is difficult to absorb the rust-preventing oil and cannot be completely removed.

In addition, many cylinder blocks are large and have a large number of holes, so it is necessary to attach a vacuum hose to each of the many holes to suck up and remove the rust preventive oil. Not only does it take a long time to remove the rust preventive oil, but the number of holes varies depending on the type of cylinder block, so the time required to remove the rust preventive oil also varies from cylinder block to cylinder block. On an assembly line where a mixture of products flows, it is difficult to balance the time between each process, which has the disadvantage of reducing production efficiency.

In addition, handling a large and heavy cylinder block is physically demanding, requires extreme caution from a safety standpoint, and has the drawback of placing a heavy burden on the operator.

Purpose The present invention has been made in order to eliminate the drawbacks of the prior art described above, and its purpose is to provide a cylinder block holding device that mechanically fixes and holds a cylinder block from left and right and up and down directions. and a rotary table which is rotatably disposed on a base together with a cylinder block holding device and which rotates the cylinder block held by the cylinder block holding device and drips rust preventive oil adhering to the cylinder block. This eliminates the need to use a vacuum pump to remove rust preventive oil, and by simply rotating the cylinder block while it is mechanically fixed,
The purpose is to make it possible to remove the rust preventive oil by natural falling, and thereby to facilitate the work and to dramatically improve the work efficiency.

Another object of the present invention is to provide a three-dimensional cam which is operated by a pneumatic cylinder and which is composed of a pneumatic cylinder, three independent cam surfaces, and a parallel holding part continuously formed on the cam surface, and one end of which is pressed by the three-dimensional cam. A plurality of holding members hold the cylinder block from left and right at the other end when the cylinder block is moved from the left and right when the parallel holding part is pressed by the parallel holding part. a cylinder block holding device consisting of a pressing member that presses and holds the cylinder block; The purpose of this invention is to enable the cylinder block to be held mechanically and safely by being equipped with a rotary table that rotates to drip rust preventive oil adhering to the cylinder block. Stop relying only on the pneumatic cylinder, eliminate the uncertainty of holding by the pneumatic cylinder, and completely eliminate the risk of the cylinder prop falling even if an abnormality occurs in the pneumatic system. , which greatly increases work safety. Another object of the present invention is to provide a highly versatile device that can sufficiently handle several types of cylinder blocks of different models.

Configuration In short, the present invention (claim 1) comprises: a cylinder block holding device that mechanically fixes and holds a cylinder block from the left and right and top and bottom directions; and a cylinder block holding device that is rotatably disposed on a base together with the cylinder block holding device. The present invention is characterized by comprising a rotary table that rotates the cylinder block held by the cylinder block holding device and drips rust preventive oil adhering to the cylinder block.

The present invention (claim 2) further provides a pneumatic cylinder, a three-dimensional cam that is operated by the pneumatic cylinder and is comprised of three independent cam surfaces and a parallel holding part that is continuously formed on the cam surfaces; a plurality of holding members whose one end swings when pressed by the three-dimensional cam, and which holds the cylinder block from left and right at the other end when pressed by the parallel holding part; and a plurality of holding members which are moved up and down by the three-dimensional cam to hold the parallel cylinder block. a cylinder block holding device comprising a pressing member that presses and holds the cylinder block downward; and a cylinder block that is rotatably disposed on a roller that is rotatably mounted on a base. The present invention is characterized by comprising a rotary table that rotates the cylinder block held by a holding device and drips rust preventive oil attached to the cylinder block.

The present invention will be explained below based on embodiments shown in the drawings. A cylinder block rust preventive oil removal device 1 according to the present invention includes a cylinder block holding device 2 and a rotary table 3, as shown in FIGS. 1 to 4.

The cylinder block holding device 2 is for mechanically fixing and holding the cylinder block 4, and is composed of a pneumatic cylinder 5, a three-dimensional cam 6, a holding member 8, and a pressing member 9.

The pneumatic cylinder 5 is for operating the holding member 8 and the pressing member 9 via the three-dimensional cam 6, and has a cylinder 11 fixed to a column 10 that constitutes a part of the rotary table 3. This is a known pneumatic cylinder operated by oil, and a piston rod 12 is disposed to be slidable in the direction of arrow A or the direction of arrow B.

The three-dimensional cam 6 is driven by the pneumatic cylinder 5 to operate the holding member 8 and the pressing member 9, and has a substantially cross-shaped cross-sectional shape with protrusions in the vertical and horizontal directions. The left and right protrusions 5a, 5b and the downward protrusion 6C are formed by cam surfaces 6d, 6e, 6f and parallel holding portions 6g, 6h, 6 formed following the cam surfaces, respectively.
1, and the upward protrusion 6j is formed as a parallel portion.

The protrusion 6j is fitted into a guide groove 13a formed in a guide rod 13 fixed to the support column 10, and guides the three-dimensional cam 6 in the direction of arrow A or B in the guide groove.

The protrusions 6a and 6b fit into guide grooves 14a and 15a formed on the transmission members 14 and 15, respectively, and the protrusion 6C fits into a guide groove 9b formed on a guide block 9a fixed to the pressing member 9. The transmission members 14 and 15 are moved to the left and right by the cam surfaces 6d and 6e while sliding in the respective guide grooves, and the guide block 9a is moved downward by the cam surface 6f, and then parallel to each other. Holding parts 6g, 6
h and 6i are configured to hold the transmission member 14, 15 and the pressing member 9 in the moved position, respectively.

The transmission members 14 and 15 have guide blocks 14b and 1 that are slidably fitted into guide rods 19 that are fixed across the left and right columns 16 and 18 that are fixed to the rotary table 3.
5b are respectively fixed to guide the transmission members 14 and 15 in the left-right direction, and push pieces 14c and 1 are opposed to one end 8a of the holding members 8, two of which are disposed on the left and right.
5c is fixed, and is configured to press the holding member 8 and rotate it in the direction of arrow C or D.

The holding members 8 are for mechanically fixing and holding the cylinder block 4 from the left and right sides, and are arranged two on each side.
1, and when one end 8a is pressed by the pressing pieces 14c and 15c, it rotates in the direction of arrow C and the other end 8b mechanically fixes the cylinder block 4 from the left and right directions. It is designed to be retained.

The pressing member 9 is for pressing and holding the cylinder block 4 from above, and is generally used to press and hold the cylinder block 4 from above.
A rectangular frame 22 having the same size as , and holes 22a formed in the four corners of the frame 22 in the piston rod 23a.
The four pneumatic cylinders 23 are slidably fitted into each other and are disposed on pillars (not shown) of the rotary table 3.

A spring 24 is disposed between the frame 22 and the tip of the piston rod 23a formed as the large diameter portion 23b, and the frame 22 is always urged upward (in the direction of arrow J).

Then, the pneumatic cylinder 23 is actuated to extend the piston rod 23a in the direction of arrow 1, and the cylinder block 4 is pressed and held from above by the large diameter portion 23b, and the three-dimensional cam 6 is further actuated by the pneumatic cylinder 5. The frame 22 is moved in the direction of arrow 1 while the spring 24 is compressed by the cam surface 6f, and then the frame is held at the moved position by the parallel holding part 61, and the cylinder block 4 is pressed and held by the spring force. is configured to do so.

The rotary table 3 is for rotating the cylinder block 4 mechanically fixed and held by the cylinder block holding device 2, and includes four rollers 26 rotatably mounted on a base 25. Several columns 10.16 and 1 on top
A pair of rotary plates 28 and 29 integrally connected at 8 are rotatably disposed.

Furthermore, openings 28a and 29a for carrying in and out the cylinder block 4 are formed in the pair of rotary plates, and a so-called roller conveyor 30 on which the cylinder block 4 is placed and moved is provided.

Referring also to FIG. 5, the rotating plate 28 has a motor 3.
A chain 33 is wound around the first pulley 32, and the rotary table 3 is rotated on the roller 26 by the motor.

The detection piece 34 fixed to the rotating plate 28 rotates approximately 90''.
Limit 7 to isochi 35A arranged on the base 25 at intervals,
It is configured to be detected by pressing and activating 35B and 35C.

Furthermore, an oil tank 36 is disposed on the base 25 to collect rust preventive oil dripping from the cylinder block 4.

Function The present invention is constructed as described above, and its function will be explained below. 1 to 4, the cylinder block 4 is carried in through the opening 28a and placed on the roller conveyor 30.

Next, air is supplied to the four pneumatic cylinders 23 from an unillustrated pneumatic source to extend the piston rod 23a in the direction of arrow 1, and the large diameter portion 23b presses the cylinder block 4 from above.

Next, when pressure oil is supplied from a fluid pressure source (not shown) to the pneumatic cylinder 5 to extend the piston loft 12, the three-dimensional cam 6 fixed to the piston rod has its protrusion 6j inserted into the guide groove 13a. Cam surfaces 6 of protrusions 6a and 6b
d and 6e, the transmission members 14 and 15 are pushed apart and moved forward in the direction of arrow A while being moved left and right.

Pressing pieces 14c and 1 fixed to transmission members 14 and 15
5c presses one end 8a of the holding member 8, so that the holding member 8
rotates in the direction of arrow C (FIG. 4), and clamps the cylinder block 4 at the other end 8b from the directions of arrows E and G.

When the three-dimensional cam 6 further advances in the direction of arrow A, the cam surface 6d
, 6e, the parallel holding parts 6g and 6h, which are formed following the guide grooves 14a and 15a, reach the positions of the guide grooves 14a and 15a, and the cylinder block 4 is mechanically fixed and held by the four holding members 8, and the holding members 8 are aligned with the arrows. Even if an attempt is made to rotate in the direction of Even when it disappears, the cylinder block 4 remains firmly fixed by the holding member 8.

Further, the cam surface 6f formed on the protrusion 6C by the operation of the three-dimensional cam 6 in the direction of the arrow A is formed on the guide block 9a.
Since the frame 22 is moved downward, the frame 22 is moved in the direction of the arrow 1 while compressing the spring 24, and then the frame is held at the moved position by the parallel holding part 61, and the cylinder block 4 is pressed by the spring force. Therefore, even if the operating force of the pneumatic cylinder 5 disappears, the cylinder block 4 is firmly fixed by the spring force.

Here, referring also to FIG.
8, and the rotary table 3 is transferred to the cylinder block holding bag N2.
While holding the cylinder block 4, it is rotated together with the cylinder block on the roller 26 in the direction of the arrow. Along with this, the detection piece 34 fixed to the rotary plate 28 also rotates, rotates approximately 90 degrees, and when the detection piece 34 presses the limit switch 35A to activate it, the motor 31 stops and the control device (not shown) This state is maintained for a predetermined period of time, for example, 30 seconds, and during that time, the antirust oil that has adhered to the holes on the left side of the cylinder block 4 will naturally drip and be removed by the action of gravity. .

After a predetermined period of time has elapsed, the motor 31 starts operating again to rotate the turntable 3 to the right (in the direction of the arrow). Approximately 180"
When the detection piece 34 rotates and presses the limit switch 35B, the motor 31 stops and this state is maintained for 30 seconds, so that the rust preventive oil attached to the holes on the right side of the cylinder block 4 is removed by the action of gravity. It is removed by dripping naturally.

Subsequently, the motor 31 rotates again to rotate the rotary table 3 to the left (
direction of arrow M), and - detection piece 34 is connected to limit switch 3.
When 5C is pressed, the motor 31 stops and the cylinder block 4 returns to its original position.

As mentioned above, while rotating the cylinder block 4, the antirust oil adhering to the holes etc. of the cylinder block is naturally dripped and removed by the action of gravity. Regardless of the number, it can be efficiently removed in an extremely short time (usually about 1 to 2 minutes).

The removed rust preventive oil, which amounts to about 2 liters per cylinder block, is collected in a tank 36.

Next, the flow of pressure oil to the pneumatic cylinder 5 is switched by a switching valve (not shown), the piston rod 12 is operated in the direction of arrow B, the holding member 8 is rotated in the direction of arrow J, and the pressing member 9 is rotated in the direction of arrow J. After the piston rod 23a is moved in the direction of arrow J by switching the flow of pressure oil in the pneumatic cylinder 23, the cylinder block 4 is released from being held by the holding member 8 and the pressing member 9.

Then, the cylinder block 4 is moved on the roller conveyor 30 and carried out through the opening 29a.

Although the cylinder block 4 weighs between 80 kg and 200 kg, it can be easily carried in and out by the roller conveyor 30, and the cylinder block is held mechanically by the holding member 8 and the pressing member 9. Therefore, even if the pneumatic cylinder 5 breaks down or malfunctions, the holding force will not change and it will be firmly held, so it is safe.

Furthermore, the removal of anti-rust oil is not limited to the cylinder block 4; for example, by fixing a crankshaft (not shown) to the cylinder block 4 as appropriate, the anti-rust oil from the cylinder block 4 and the crankshaft can be removed at the same time. By doing so, the rust preventive oil can be removed more efficiently.

Effects The present invention provides a cylinder block holding device that mechanically fixes and holds a cylinder block from the left and right and top and bottom directions as described above, and a cylinder block that is rotatably arranged together with the cylinder block holding device on a base. Since it is equipped with a rotary table that rotates the cylinder block held by the holding device number and drips the rust preventive oil attached to the cylinder block, there is no need to use a vacuum pump to remove the rust preventive oil, and the cylinder By simply rotating the block while it is mechanically fixed, it is possible to remove the rust preventive oil by letting it fall naturally.As a result, the work becomes easier and the work efficiency is dramatically improved. This has the effect of making it possible to improve the situation.

a three-dimensional cam that is actuated by the pneumatic cylinder and is made up of three independent cam surfaces and a parallel holding part continuously formed on the cam surfaces, and one end of which is pressed by the three-dimensional cam and swings. Multiple holding members that hold the cylinder block from left and right at the other end when pressed by the parallel holding part, and are moved vertically by a three-dimensional cam and pressed by the parallel holding part to press and hold the cylinder block downward. a cylinder block holding device consisting of a pressing member that is rotatably mounted on a base; and a cylinder block rotatably disposed on a roller rotatably mounted on a base and held by the cylinder block holding device; Since the rotary table that drips the rust preventive oil adhering to the cylinder block has been removed, the cylinder block can be mechanically held safely, and as a result, it is no longer dependent only on the pneumatic cylinder to hold the cylinder block. Therefore, the uncertainty of holding by the pneumatic cylinder can be eliminated, and even if an abnormality occurs in the pneumatic system, the risk of the cylinder block falling can be completely eliminated, improving work safety. It has the effect of significantly increasing sex. Furthermore, it is possible to provide a highly versatile device that can sufficiently handle even several types of cylinder blocks of different models.

[Brief explanation of drawings]

The drawings relate to embodiments of the present invention, and FIG. 1 is a perspective view showing the entire rust preventive oil removal device for a cylinder block, FIG. 2 is an enlarged perspective view of the main part, and FIG. 3 is a plan view of the main part. 4 is the same (front view, and FIG. 5 is a schematic front view showing the rotating state of the rotary table. 1 is a cylinder block rust prevention oil removal device, 2 is a cylinder block holding device, 3 is a rotary table, 4 is a cylinder block, 5 is a pneumatic cylinder, 6 is a three-dimensional cam, 6d, 6e, 6
f is a cam surface, 6g, 6h, and 6i are parallel holding parts, 8 is a holding member, 9 is a pressing member, 25 is a base, and 26 is a row. Patent applicant Hino Motors Co., Ltd.

Claims (1)

[Scope of Claims] 1. A cylinder block holding device that mechanically fixes and holds the cylinder block from the left and right and top and bottom directions, and a cylinder block holding device that is rotatably disposed on a base together with the cylinder block holding device. An apparatus for removing rust preventive oil from a cylinder block, comprising: a rotary table for rotating the cylinder block held by the apparatus and dripping rust preventive oil adhering to the cylinder block. 2. A pneumatic cylinder, a three-dimensional cam that is operated by the pneumatic cylinder and is made up of three independent cam surfaces and a parallel holding part formed continuously on the cam surfaces, and one end of which is pressed by the three-dimensional cam and swings. and a plurality of holding members that clamp the cylinder block from left and right at the other end when pressed by the parallel holding part, and a plurality of holding members that are moved in the vertical direction by the three-dimensional cam and pressed by the parallel holding part to hold the cylinder block downward. a cylinder block holding device comprising a pressing member that presses and holds the cylinder block; and a cylinder block that is rotatably disposed on a roller rotatably mounted on a base and held by the cylinder block holding device. 1. An apparatus for removing rust preventive oil from a cylinder block, comprising: a rotary table that rotates to drop rust preventive oil attached to the cylinder block.