JP2740971B2 - Plug insertion device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a plug insertion device.

[Problems to be solved by conventional technology and invention]

Generally, golf balls such as one-piece balls and two-piece balls
Conventionally, when inserting a plug having a predetermined shape such as a columnar or oval shape for a core for a piece ball into a molding recess of a lower die of a molding die, an operator conventionally inserts one plug into each recess. Was. In addition, at the time of this charging, if the cylindrical plug is not correctly inserted vertically, there is a possibility that a defective product such as insufficient volume or the like may be formed during molding and vulcanization. That is, if the molding and vulcanization are performed in a fallen state, the material will largely erode from the cavity. Further, for the worker, the work was performed in the middle of the waist in front of the press machine, which was quite heavy labor and the work efficiency was poor. In addition, since the mold is in a preheated state when the plug is inserted, it takes a long time to insert the plug, which causes a large energy loss, which is not preferable.

In view of the above, an object of the present invention is to provide a plug insertion device which can easily, quickly and surely insert a plug into all the molding recesses of a mold.

[Means for solving the problem]

In order to achieve the above-described object, the plug insertion device according to the present invention includes a plug having a predetermined shape such as a columnar shape or an oval shape,
A plug insertion device for inserting into a molding recess of a lower mold; a base having a number of vertical through holes having an inner diameter slightly larger than an outer diameter of the plug; and a through hole of the base having an inner diameter. A plate-shaped shutter having a large number of plug drop holes slightly larger than the inner diameter of the base plate and capable of reciprocating in one direction along the horizontal direction on the back side of the base;
The flat shutter is reciprocated in the horizontal direction so that the axis of the through hole of the base plate and the axis of the plug drop hole of the flat shutter coincide with each other, or the lower opening of the through hole. And a reciprocating mechanism for closing a portion in which the portion is covered by the plate-shaped shutter.

(Operation)

When the plug is inserted into each through-hole in a closed state where the lower opening of the through-hole of the base is covered with a flat shutter, the inner diameter of the through-hole is set slightly larger than the outer diameter of the plug. As a result, the plug is held in the through hole with its axis substantially aligned with the axis of the through hole. Then, from this state, the flat shutter is moved via the reciprocating mechanism so as to be in an open state in which the axis of the through hole of the base and the axis of the plug drop hole of the flat shutter match. Since the inside diameter of the plug dropping hole is set slightly larger than the inside diameter of the through hole, the plug in the through hole falls along the axis.

Therefore, the base in a state where the plug is inserted into the through-hole is transported to a position slightly above the lower mold, and in this state, if the base is opened, the plug in the through-hole is put into the recess.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the drawings showing examples.

FIGS. 1 and 2 show a plug insertion device according to the present invention. As shown in FIG. 6, this device forms a plug 1 having a predetermined shape such as a columnar shape or an oval shape into a lower mold 2. Recess 3 ...
A base plate 5 having a large number of vertical through holes 4..., And a flat shutter 7 capable of reciprocating in one direction along the horizontal direction on the back surface 6 side of the base 5. And a reciprocating mechanism 8 for reciprocating the shutter 7 in the horizontal direction.

A pair of holding frames 10 and 10 for holding the flat shutter 7 are provided on the back surface 6 of the base 5.
Is capable of reciprocating in the horizontal direction in the directions of arrows A and B,
It is attached to the base 5. Here, the holding frames 10, 10 are:
The base member 5 is attached to the back surface 6 on the side surface 5a, 5b side facing the base 5 via a fixing tool 11 such as a bolt attached to the base member 5 and is longitudinally attached to the base surface 5 side of the opposing surfaces 12,12. Direction notches 13 are provided, and side ends 14 of the shutter 7 are slidably fitted in the notches 13.

As shown in FIG. 6, the plate-shaped shutter 7 is provided with plug drop holes 15 having an inner diameter larger than the inner diameter of the through hole 4 of the base 5. ) (III)
As shown in FIG. 1, the axial center of the through hole 4 and the axial center of the plug dropping hole 15 are in an open state, and as shown in FIGS. The opening 4a may be closed by the shutter 7 to be covered. In addition,
Positioning holes 9, 9 are provided in the corners of the base 5, and these holes 9, 9 are fitted to knock pins provided on the upper surface of the lower mold 2.

Thus, as shown in FIGS. 1 and 5, the reciprocating mechanism 8 includes resilient members 16 and 16 for pulling the shutter 7 in the direction of arrow B.
A push rod 17 connected to the shutter 7 and projecting from the rear surface 5c of the base 5; and a pressing cylinder 18 for pressing the push rod 17 in the direction of arrow A.

That is, as shown in FIG. 3, a hole 19 is provided substantially at the center of the rear surface 5c of the base 5, and a blind hole 20 opening to the back surface 6 is provided in the hole 19. A push rod 17 is inserted into the hole 19 and the blind hole 20 so as to be slidable in the longitudinal direction, and a block 21 included in the blind hole 20 is attached to the shutter 7 via a fixing tool 22 such as a bolt. Have been. Also,
The block 21 and the push rod 17 are fixed to each other by the fixing tool 22. Accordingly, when the head 17a of the push rod 17 is pressed in the direction of arrow A from the state shown in FIG. 3 (I) as shown in FIG. 3 (II), the shutter 7 slides in the direction of arrow A. .

In addition, as shown in FIG.
One end 16a is locked by a pin 24 protruding from the shutter 7 and the other end 16b is fixed to the rear surface 5c of the base 5 by inserting it into holes 23 provided in the rear surface 5c. It is locked by a stopper 25. That is, the pin 24 is inserted into the through hole 26 communicating with the hole 23, and a concave circumferential groove is provided at the tip thereof,
One end 16a of the resilient member 16 is locked in the concave circumferential groove. As shown in FIG. 2, the locking tool 25 includes a main body 25a attached to the rear surface 5c via a fixing tool such as a bolt, and the main body 25a.
And a projecting portion 25b projecting therefrom. The projecting portion 25b is provided with a concave peripheral groove, and the other end 16b of the resilient member 16 is engaged with the concave peripheral groove. That is, normally, the shutter 7 is pulled in the direction of arrow B by the resilient members 16 and 16,
When the shutter 7 is released from the state where the shutter 7 is pressed in the direction of arrow A as shown in FIGS. 4 (II) and 5, as shown in FIGS. 4 Return to the state shown in FIG.

The shutter 7 is provided with long holes 27.
Are pins 28 which can slide in the longitudinal direction of the long hole 27.
Is provided. That is, as shown in FIG. 2, the pin 28 is composed of a bolt 30 inserted into the through hole 29 of the base 5 and a nut 31 screwed to the bolt, as shown in FIG. When the push rod 17 is pressed by the cylinder 18 in the direction of the arrow A, the pin 28 is attached to the rear end of the long hole 27 so that the axis of the through hole 4 and the axis of the plug drop hole 15 coincide. Positioning is performed by contact. Also, as shown in FIG.
The position of the tip of the long hole 27 is determined so that the plug dropping hole 15 is located between the through holes 4 in a plan view when is not pressed.

As shown in FIG. 7, the cylinder 18 of the reciprocating mechanism 8 has a main body 18a held by a holding body 32, the piston rod 18b reciprocates in the directions of arrows A and B, and Press in the A direction.

Thus, the base 5 provided with the shutter 7 is held by a pair of holding arms 33, 33, and the holding arms 33, 33
The holder 32 is mounted so as to be capable of reciprocating in horizontal arrows C and D directions. Here, the holding arm 33 is composed of a triangular base 33a and a holding portion 33b continuously provided from the base 33a.
On the inner surface of the holding portion 33b, protruding pins 34, 34 protrude inward, and on the side surfaces 5a, 5b of the base end 5, the protruding pins 34, 34
Fitting holes 35, 35 into which 34 fits are provided. As shown in FIG. 8, the protruding pin 34 includes a distal small-diameter portion 34a, an intermediate large-diameter portion 34b, and a proximal small-diameter portion 34c.
Is inserted into and fixed to the holding portion 33b, and the small-diameter portion 34a at the tip is fitted into the fitting hole 35.
Is fitted to. In this case, the fitting hole 35 is the base 5
Cylindrical body 3 inserted and fixed in blind holes 36 provided in side surfaces 5a and 5b of
It is formed with 7 holes. A flange 38 is provided on the cylindrical body 37 to abut against the side surfaces 5a and 5b.
The flange 38 is attached to the base 5 via a fixing tool such as a bolt. When the base 5 is held by the arms 33, 33, the intermediate large-diameter portion 34b of the protruding pin 34 is interposed between the holding portion 33b and the flange 38 of the cylindrical body 37.

Thus, guide members 39, 39 such as linear guides are provided between the holding arms 33, 33 and the holding body 32, and the holding arms 3
Position adjustment is possible in the directions of arrows C and D of 3,33. This is because the holding arms 33, 33 are arranged in the direction of the arrow C or D so that the positioning holes 9, 9 provided in the corners of the base 5 and the knock pins provided on the upper surface of the lower mold 2 fit smoothly. Moves.

Next, a method of using the plug insertion device configured as described above will be described.

First, the lower opening 4a of the through-holes 4 is closed by the shutter 7 so as to be covered by the shutter 7, and outside the lower mold 2,
The plugs 1 are inserted into the through holes 4 as shown in FIG. In this case, since the inner diameter of the through hole 4 is set slightly larger than the outer diameter of the plug 1, each plug 1 is erected so that its axis coincides with the axis of the through hole 4.

Then, the base 5 in which the plugs 1 are inserted into the through holes 4 is held by holding arms 33, 33, and the holding body 32 is transferred to the lower mold 2 by a transfer device (not shown). Fig. 6 (I)
The base 5 is located slightly above the lower mold 2 as shown in FIG. In this case, the base 5 is set substantially parallel to the lower mold 2, and the through holes 4 are set so as to correspond to the recesses 3 of the lower mold 2 in plan view.

Next, from the state shown in FIG. 6 (I), the push rod 17 is pressed by the cylinder 18 to slide the shutter 7 in the direction of arrow A as shown in FIG. Is set in the open state in which the axis of the plug coincides with the axis of the plug drop hole 15, as shown in the figure, each plug 1... It is thrown. After that, the through hole 4
.. With the plugs 1 and the shutter 7 not in contact with each other as shown in FIG. The lower opening 4a of the through hole 4 is closed so as to form a lid, and the base 5 is isolated from the lower mold 2.

In the above-described embodiment, the inner diameter of the through hole 4 is set to be larger than the outer diameter of the plug 1 by 2 to 3 mm.
Is set to be larger than the inner diameter of the through hole 4 by 1 to 2 mm.

The present invention is not limited to the above-described embodiment, and the design can be freely changed without departing from the gist of the present invention. For example, the number of the through holes 4 and the number of the plug drop holes 15 can be freely increased and decreased.
In the embodiment, the number of the through holes 4 is 40 and the number of the plug dropping holes 15 is 34, but this is a state in which the push rod 17 is pressed as shown in FIG. In this case, the rear surface 7c of the shutter 7 is located on the front end side of the through hole 4 on the rear surface 5c side, and the plug drop hole 15 on the rear surface 7c side is not required. It is free to make the number of 15 coincide with the number of through holes 4.

In addition, although the cylindrical plug is used as the plug 1 in the embodiment, it is of course preferable to use a plug 1 having a predetermined shape such as an oval shape.

〔The invention's effect〕

Since the present invention is configured as described above, the following effects can be obtained.

The operator can automatically insert the plugs 1 into each of the recesses 3 at a time without having to insert the plugs 1 one by one into the recesses 3... The operation efficiency of the press can be improved. Furthermore, when the plug 1 is inserted, the mold 2 is normally in a preheated state, and the shortening of the injection time contributes to energy saving.

In addition, since each plug 1 is accurately inserted without falling into the recess 3, a part of the plug 1 protrudes from the cavity at the time of molding, and each product becomes insufficient in volume. There is no.

[Brief description of the drawings]

1 is an enlarged plan view of a main part in a closed state showing an embodiment of the present invention, FIG. 2 is an enlarged side view showing a partial cross section, FIGS. 3 and 4 are enlarged cross-sectional views of a main part, respectively. 5 is an enlarged plan view of a main part in an open state, FIG. 6 is an enlarged cross-sectional view of a main part for explaining a charging method, FIG. 7 is a simplified plan view, and FIG. 8 is an enlarged cross-sectional view of a main part of a base. 1 ... plug, 2 ... lower mold, 3 ... molding recess, 4 ...
... vertical through hole, 4a ... lower opening, 5 ... base, 6
... Back side, 7 ... Flat shutter, 8 ... Reciprocating mechanism.

Claims (1)

(57) [Claims] 1. A plug insertion device for inserting a plug 1 having a predetermined shape into a molding recess 3 of a lower mold 2, wherein a plurality of vertical plugs whose inner diameter is slightly larger than the outer diameter of the plug 1 is provided. And a plurality of plug drop holes 15 having an inner diameter slightly larger than the inner diameter of the through hole 4 of the base 5 and the base 5.
A flat-plate shutter 7 capable of reciprocating in one direction along the horizontal direction on the back surface 6 side of the base plate; and reciprocating the flat-plate shutter 7 in the horizontal direction to form an axis of the through-holes 4. An open state in which the center and the axis of the plug drop hole 15 of the plate-shaped shutter 7 coincide with each other, or
And a reciprocating mechanism (8) for closing the lower openings (4a) of the through holes (4) by the flat shutter (7).