KR20020034626A - Device for inserting a cooling member into holes formed in coolant flow way - Google Patents

Abstract

PURPOSE: A device for insert of a cooling metal element of a plastic die is provided to reduce working time and to facilitate channel change of cooling water by installing the cooling metal element to a position not required introduction of cooling water. CONSTITUTION: A device inserts a pair of cooling metal elements into a bypass channel(6). The device comprises a screw shaft(102) having threaded portions on both ends, a hollow tube(101) in which the screw shaft is rotatably installed, a first rod(120) welded to the hollow tube to grip the same upon fixing the screw shaft to a die, a second rod(122) fixed to the threaded portions for pressing a pair of cooling metal elements each other, and a third rod(124) fixed on one end of the screw shaft for separating the screw shaft from the cooling metal element through the bypass channel.

Description

DEVICE FOR INSERTING A COOLING MEMBER INTO HOLES FORMED IN COOLANT FLOW WAY}

The present invention relates to a cooling tool inserting device for changing a cooling water flow path of a plastic mold, and more particularly, to easily install a cooling tool at a place where cooling water flow is unnecessary when installing a cooling water flow path in a mold, thereby reducing work time and cooling water flow path. The present invention relates to a cooling tool inserting device for changing a cooling water flow path of a plastic mold, which is easy to modify during a change.

In general, when the mold is manufactured, a cooling water flow path through which cooling water may flow should be formed in advance, which will be described with reference to FIGS. 1 and 2.

1 and 2 show a plan view and a cross-sectional view of a mold showing a state in which a conventional copper rod is installed in a cooling water flow path.

First, as shown in FIG. 1, a cooling water flow path that guides cooling water flows along a direction of an arrow is provided in the mold 1. At this time, the bypass passage 6 which connects the cooling water flow passages extending in the horizontal direction is provided with the rod 8 to prevent the cooling water flow passage as indicated by the arrow. Both ends of the bypass are closed with a stopper bolt (4).

Next, FIG. 2 shows a state where the bypass passage 6 is blocked by the rod 8. For this purpose, holes 6a of a predetermined (for example, φ24) are processed in the bypass passage 6. Next, after the copper rod 8 is inserted into the hole 6a, the coolant can be prevented from flowing to the left in the drawing by hitting the rod with a hammer or the like to spread the copper rod. The hole 6a is then closed with a stopper bolt to prevent the discharge of the cooling water.

However, the conventional technique of installing the rod to change the cooling water flow path of the plastic mold has to process the tab in the hole and the stopper bolt assembly of φ 24, it takes a lot of work time due to the enclosed work and the stopper bolt fastening. In addition, modification of the cooling water flow path is difficult and takes a long time.

The present invention for solving such a problem does not require the tap processing of the enclosed insertion hole and the stopper bolt assembly portion, by inserting the cooling bracket into the bypass passage with a dedicated insertion device to reduce the working time required to change the cooling water flow path and cooling water It is an object of the present invention to provide a cooling tool inserting device for changing a cooling water flow path of a plastic mold, which is easy to modify during a flow path change.

1 is a plan view showing a mold in which a conventional copper rod is installed in a cooling water flow path;

2 is a cross-sectional view taken along the line A-A in FIG.

3 is a plan view showing a mold in which the cooling bracket of the present invention is installed in the cooling water flow path;

4 is a cross-sectional view showing a state of inserting a cooling bracket using the insertion apparatus of the present invention,

5 is a plan view showing a fixed state of the stopper shown in FIG.

[Explanation of symbols on the main parts of the drawings]

1: Mold 2, 2 ': Coolant flow path

4: stopper bolt 6: bypass passage

10: cooling bracket 12, 14: first, second bracket member

100: insertion device 101: spacer

102: screw shaft 103: spacer

104: stopper 105: bolt

106, 107: Spacer 108: Bearing

109, 110: Spacer 111: Nut

In order to achieve the above object, a cooling tool inserting device for changing a cooling water flow path of a plastic mold of the present invention is a plastic mold having a plurality of cooling water flow paths extending vertically and a bypass passage for horizontally communicating the cooling water flow paths. Inserting a pair of cooling brackets into the bypass passage, the screw shaft with the screw formed at both ends, the hollow tube in which the screw shaft is rotatably disposed in the state inserted into the bypass passage, and the screw shaft is fixed to the mold The first rod fixed to the hollow tube by welding or the like, the second rod fixed to the threaded portion of the screw shaft to press the pair of cooling brackets against each other, and fixed to one end of the screw shaft from the cooling bracket. And a third rod that separates the screw shaft and allows it to be removed from the bypass passage. It shall be.

Hereinafter, with reference to the accompanying Figures 3 to 5 will be described in detail with respect to the cooling tool insertion apparatus for changing the cooling water flow path of the plastic mold according to an embodiment of the present invention.

First, FIG. 3 is for inserting a plurality of cooling water flow passages 2 and 2 'extending vertically into a bypass passage 6 of a plastic mold for horizontal communication. In the present invention, a pair of cooling brackets 10 are provided. Is illustrated. The cooling bracket 10 has a first metal member 12 having an internal thread 12b formed therein and an outer inclined portion 12a formed at one end thereof, and an outer inclined portion 12a of the first bracket member 12. The second bracket member 14 having the inner inclined portion 14a to which the pressure is pressed is formed in a pair. In addition, the first bracket member 12 is formed with a threaded portion 12b to which the threaded portion of the screw shaft 102 to be described later is fastened.

When inserting into the bypass passage 6, the first bracket member 12 and the second bracket member 14 are inserted in a state slightly separated from each other, and then the first bracket member is inserted by the insertion device shown in FIG. As the 12 moves toward the second bracket member 14, the inner and outer inclined portions 12a and 14a of the both bracket members 12 and 14 are compressed to restrain the flow of the cooling water.

Next, FIG. 4 shows a state in which the cooling bracket having such a configuration is inserted into the bypass passage using the insertion apparatus 100 of the present invention.

Looking at the overall configuration of the inserting apparatus 100 according to the present invention for inserting the cooling bracket 10, the screw shaft 102 with the screw formed at both ends and the screw inside the state in the state inserted into the bypass passage (6) Hollow tube 101 is rotatably disposed in the shaft 102 and the screw shaft 102 is fixed to the hollow tube 101 by hand, such as welding so as to hold by hand when fixing the mold (1) The first rod 120 and the second rod 122 fixed to the threaded portion of the screw shaft 102 to compress the pair of cooling brackets 10 and the one end of the screw shaft 102 are fixed to the cooling bracket 10. ) And a third rod 124 to separate the screw shaft 102 from the bypass passage 6. Handles are fitted in the main bodies 106, 109, 112 of these first to third rods 120, 122, and 124, respectively.

The screw portion 12b of the first bracket member 12 described above is fastened to the screw portion of the screw shaft 102 corresponding to the left side in the drawing. In addition, a stopper 104 is disposed on the outer circumferential portion of the hollow tube 101 via a spacer 103, and a fixing bolt 105 is provided on the stopper 104. A spacer 107 and a bearing 108 are disposed between the first rod 120 and the second rod 122 to maintain the gap, and the spacer for maintaining the gap between the second rod 122 and the third rod 122 is also provided. 110 is fitted. The third rod 124 is fixed by the nut 111.

In order to install the cooling bracket 10 in the bypass passage 6 using the inserting apparatus 100 having such a configuration, first, the first bracket member 12 and the second bracket member 14 are screw shafts 102. In the state fixed at), it is inserted into the bypass passage 6 to place the cooling bracket 10 at the portion indicated by. Next, the stopper 104 is fastened to the hollow tube 101 by tightening the bolt 105 as shown in FIG. The hollow tube 101 is further compressed as both ends 104a of the stopper 104 are narrowed by fastening the bolt 105 and the nut 114.

After fixing the stopper 104, the first rod 120 is held by one hand (eg, the left hand) and the second rod 122 is held by the other hand (eg, the right hand) while being fixed to the mold 1 to rotate. When the main body 112 is rotated by screwing, the bracket member 12 fastened to the end thereof is pulled inward of the other bracket member 14 (the bracket member 12 is pulled outward toward the mold) and simultaneously. When the outer inclined portion 12a of the first bracket member 12 is pressed in a state of being in close contact with the inner inclined portion 14a, the second bracket member 14 has an inner diameter of the bypass passage 6 while the diameter thereof is increased. It adheres to the side.

Next, when the third rod 124 is rotated with the same hand, the first bracket member 12 fixed to the screw shaft 102 is detached from the threaded portion so that the insertion device can be detached from the cooling bracket 10. When the insertion apparatus 100 is removed from the mold 1, only the cooling bracket 10 remains in the bypass passage 6, so that the cooling water flow path can be changed as shown in FIG.

According to the present invention described above, there is no need for the tab insertion hole and plug bolt assembly part tap processing, and the dedicated inserting device inserts the cooling bracket into the bypass passage, reducing the work time required to change the cooling water flow path and Easy to modify when changing

Claims (3)

In a plastic mold having a plurality of cooling water flow passages 2, 2 'extending vertically and a bypass passage 6 for horizontally communicating the cooling water flow passages 2, 2', By inserting a pair of cooling brackets (10) into the bypass passage (6), screw shafts 102 having screws at both ends, The hollow tube 101 is rotatably disposed inside the screw shaft 102 in the state inserted into the bypass passage (6), A first rod 120 fixed to the hollow tube 101 by welding or the like so that the screw shaft 102 can be held by hand when the screw shaft 102 is fixed to the mold 1; A second rod 122 fixed to the screw portion of the screw shaft 102 and compressing the pair of cooling brackets 10 to each other; And a third rod 124 fixed to one end of the screw shaft 102 to separate the screw shaft 102 from the cooling bracket 10 so that the screw shaft 102 can be removed from the bypass passage 6. Cooling tool inserting device for changing the cooling water flow path of plastic mold. The method of claim 1, The cooling bracket 10 has a threaded portion 12b formed therein and a first bracket member 12 having an outer inclined portion 12a formed at one end thereof; Inserting the cooling bracket for changing the cooling water flow path of the plastic mold, characterized in that the second bracket member 14 formed with the inner inclined portion 14a to which the outer inclined portion 12a of the first bracket member 12 is pressed. Device. The method of claim 1, The stopper 104 is coupled to the outer circumferential surface of the hollow tube 101 by a bolt 105 is fixed to the cooling tool insert for changing the cooling water flow path of the plastic mold.