JPS599791Y2 - Press-fit device for sealing plugs - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a pressure device for a sealing plug that seals an opening formed in a workpiece such as a cylinder block.

In general, for cylinder blocks and other cast products having hollow parts, for example, in order to form a water jacket, it is necessary to use a core and open a sand removal hole in the core that communicates the water jacket with the outside.

The sand removal hole is sealed with a plug after the cylinder block has been machined and cleaned.

Conventionally, closing with a plug involves manually fitting the plug into the opening and press-fitting it with a pneumatic hammer, which is time consuming and extremely complicated.

The present invention has been developed in view of the above, and is capable of feeding a bowl-shaped plug with its opening facing downward, and automatically press-fitting the bowl-shaped plug into the opening of the workpiece. The present invention provides a press-fitting device for a sealing plug.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, reference numeral 1 denotes a press-fitting device for a sealing plug 2, in which a base 5 includes two press-fit elements 6, two fitting jigs 8, two guides 9, and one feeding means 7. It is set up and organized.

A transfer device 4 for transferring the cylinder block 3 is provided in front of the press-fit element 6, and the cylinder block 3 is placed on the transfer device 4.

The plug 2 is bowl-shaped with rounded corners and has an opening 10.

The press-fitting element 6 is connected to a press-fitting cylinder 11 fixed to the base 5, and a protrusion 12 is provided at the tip of the press-fitting cylinder 11 into which the plug 2 is fitted at its opening 10. Move back and forth.

The feeding means 7 includes a storage drum 13, a feeding passage 14, and an individual feeding means 15, and the storage drum 13 is provided at the top of the base 5.

As shown in FIG. 3, the storage drum 13 has an input port 1 at the top.
6 is formed with a plurality of discharge ports 17 on the lower circumferential surface, and is held so as to be rotatable while tilting slightly forward and downward, and a rotating shaft 18 is connected to the lower part, and the rotating shaft 18 has a sprocket}19 .2
0 and a drive motor 22 provided on the base 5 via a chain 21.

The outlet 17 has a rectangular shape, and both upper corners are arcuate so that the plug 2 passes through the opening 10 facing downward, and vice versa (with the opening 10 facing upward). The edge of the plug 2 abuts against the arcuate corner to prevent passage.

The feeding passage 14 consists of a band-shaped passage 23 surrounding the lower part of the storage drum 13 and two straight passages 24 that are bifurcated at the lowest part of the band-shaped passage 23. It is extended near the tip, and the lower end is opened in the vertical direction, and a vertical guide part 25 is formed at the bottom of the opening, and the plug 2 is transferred in series one by one downward through the opening 10.

The individual supply means 15 has a supply claw 26 above the straight passage 24.
is rotatably supported by a pin 27, and an arm 26C is integrally connected to the supply claw 26, and the end of the arm 26C is connected to the vertical movement of the piston rod 29 of the supply cylinder 28 so that the supply claw 26 Piston rod 2 so that it can rotate
It is connected to the tip of 9.

The supply claw 26 has a fork shape with a first claw 26a and a second claw 26.
b is shaped, and both claws 26a and 26b are connected to the straight passage 24.
It protrudes into the straight passage 24 through an opening 30 formed in the upper part of the plug, and is rotated by the operation of a supply cylinder 28 to supply the plugs 2 downward one by one at regular intervals.

The fitting jig 8 has an upper end connected to the tip of the piston rod 29, and a lower end formed with a recess 31 for temporarily holding the plug 2 fed through the linear passage 24.

The recess 31 is curved forward so as to hold the plug 2 in such a way that its opening 10 is slightly inclined downward, and the plug 2 is curved forward in the recess 31.
It is held so as to lean inward, and is moved up and down by the operation of the supply cylinder 28 between a position facing the lower end opening of the linear passage 24 and a front position close to the tip of the press-fitting element 6.

As shown in FIG. 2, the guide 9 regulates the vertical movement trajectory of the fitting jig 8. A guide piece 32 is connected to one end of the U-shaped cross section, and the guide piece 32 is connected to the fitting jig 8. The recess 31 engages with a vertical guide groove 33 formed on the side surface of the
is guided so that it comes to a position close to the front of the press-fit element 6, and the plug 2 is engaged and fitted into the protrusion 12 at the opening 10 thereof.

On the other hand, the cylinder block 3 has a water jacket 34.
A sand removal hole 35 is formed in the core, which was used to hold the shape of the core.

The transfer device 4 has a conveyor 36 that moves in a direction perpendicular to the moving direction of the press-fitting element 6, and the cylinder block 3 placed on the conveyor 36 is moved so that its sand removal hole 35 is connected to the protrusion 12 of the press-fitting element 6.
It is transferred so that it is located in front of the

Next, to explain the operation, the plug 2 is sequentially inserted into the input port 1.
6 into the storage drum 13, and when the storage drum 13 is rotated, only the plugs 2 with the openings 10 facing downward are successively discharged from the discharge port 17 and supplied to the strip passage 23.

Subsequently, the plug 2 moves down the feeding passage 14 and the first pawl 26
a, and are stored in series in the feeding passage 14.

Next, the process moves to the fitting process of the plug 2, which will be described later. When the piston rod 29 descends, the supply claw 26 rotates to the left, one plug 2 comes into contact with the second claw 26b, and then the supply cylinder 2
8 moves to the return process and the piston rod 29 rises, the supply claw 26 rotates clockwise, and the first claw 26a moves to the second claw 26.
At the same time, the plug 2 that is in contact with the second claw 26 b is fed downwardly.

By repeating this operation, one plug 2 is supplied for each cycle of operation of the supply cylinder 28.

The plug 2 supplied to the straight passage 24 fits into the recess 31 of the fitting jig 8, and the recess 31 is located in front of the lower end opening of the straight passage 24 when the supply cylinder 28 is returned to its original position.
Next, when the supply cylinder 28 is actuated (plug fitting process), the recess 31 is lowered, and at this time, the plug 2 is inserted into the opening 1.
The upper end edge of the opening 10 slides against the guide part 25 and moves, and the upper end edge catches the upper part of the protrusion 12 of the press-fitting element 6, and the press-fitting element 6 is further fitted. When the fitting jig 8 moves downward, the upper end 31a of the recess 31 presses the bottom of the plug 2, causing the plug 2 to fit into the protrusion 12, and the fitting jig 8 further descends, causing the plug 2 to protrude. 12 completely.

The fitting process and the rotation of the supply claw 26 are linked.

After moving the fitting jig 8 upward, press fit cylinder 1
1 to move the press-fitting element 6 forward, the plug 2 is fitted into the sand removal hole 35 of the waiting cylinder block 3, and the sand removal hole 35 is sealed.

Next, the press-fitting element 6 is moved back to complete one cycle of the plug press-fitting operation.

In this embodiment, the cylinder block 3 has been described, but the invention can be similarly applied to various workpieces.

As described above, according to the press-fitting device for a sealing plug of the present invention,
While arranging the bowl-shaped plug in a certain direction and feeding it sequentially,
Since the fed bowl-shaped plug can be automatically press-fitted into the hole in the workpiece, the hole can be sealed in a short time, and the work can be done more efficiently. .

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the present invention, and FIG. 1 is a schematic diagram of the overall structure, FIG. 2 is a sectional view taken along line III in FIG. 1, and FIG. 3 is a partially omitted illustration of the feeding means. FIG. DESCRIPTION OF SYMBOLS 1... Press-fitting device, 2... Plug, 3... Cylinder block, 6... Press-fitting element, 7... Feeding means, 8...
・Fitting jig, 9... Guide, 10... Opening, 1
1... Press-fit cylinder, 13... Storage drum, 14...
...Feeding passage, 15... Individual supply means, 26... Supply claw, 28... Supply cylinder, 31... Recess, 35
...Sand removal hole.

Claims (1)

[Scope of utility model registration request] A press-in member that is moved back and forth in the axial direction by a presser cylinder;
a feeding means provided above the press-fit element for feeding a large number of bowl-shaped plugs with their openings oriented downward; and a feeding means for feeding the bowl-shaped plugs supplied by the feeding means with their openings slanting downward. A fitting jig is provided with a recess for temporary holding, and the bowl-shaped plug is guided by regulating the vertical movement locus of the fitting jig so that the recess is in front of the press-fitting element. A press-fitting plug for sealing, characterized in that the bowl-shaped plug is press-fitted into a hole opened in a side surface of a workpiece, the plug being provided with a guide that securely fits onto the tip of the press-fitting element at the opening. Device.