JPS58132350A - Punching machine for vent hole of casting mold - Google Patents

Abstract

PURPOSE:To punch the vent holes of a casting mold carried out from a molding machine automatically using mechanical force by mounting punching tools vertically movably with a table which is movable in the directions in parallel with or across the conveying line for casting molds above the conveying line. CONSTITUTION:When a casting mold 9 which is conveyed intermittently in a conveying line for casting molds arrives at punching positions, a locator 6 is moved downward by an air cylinder 8 and is fitted onto a knock pin 11 of a molding flask. Both are fitted smoothly by the movement of a longitudinally and transversely movable stand 4 on a stationary base 3, whereby the mold 9 and the stand 4 are fixed in a specified position relation. Transverse movements are then given to a table 13 movable in parallel with the conveying line, longitudinal movements are given to a table 22 movable in the direction across the conveying line thereon, whereby drills 33 are guided to the prescribed punching positions and are stopped thereto. The drills 33 are rotated and moved downward by air motors 36 and air cylinders 32 in succession to the above, whereby the mold 9 is punched with holes.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a mold making fin in which a gas vent hole is formed in the mold while the mold (upper mold) produced by the mold making machine is being conveyed to the mold matching machine. Concerning the Kongming machine.

In order to prevent the effects of gas generated during pouring, a gas vent hole is formed in Masunada Ward 41, but traditionally this work was done manually using a hand drill or hand punch. It is common for there to be. However, especially in the case of large molds or molds with multiple fillings, it is necessary to provide many gas vent holes in one mold, which forces workers to work hard and creates a poor working environment. There were some problems, such as the risk of forgetting to read the picture above.

The object of the present invention is to eliminate the above-mentioned problems of the conventional molding machine and provide a machine that can automatically perform the work of drilling gas vent holes for molds that are carried out from a mold making machine using mechanical power. There is a particular thing.

Embodiments of the present invention will be specifically described below based on the drawings. As shown in the figure, the lobe conveyor 1 straddles the #-shaped conveyance line constituted by the roller conveyor 1.
A fixed pedestal 3 formed in the shape of a rectangular frame larger than the flask 10 is fixed to the upper part of the frame 2 erected on both sides of the mold. The formed movable pedestal 4 moves through an appropriate number of transferable balls 5 in a direction parallel to the direction of the clamp conveyance line (hereinafter referred to as the front-back direction) and in a direction perpendicular to the direction of the mold conveyance line (hereinafter referred to as the left-right direction). It is movably placed on the The lower portions of the front and rear inner hooks of the movable pedestal 4 have bottle holes 6 & at their lower ends to correspond to a pair of knock bottles 11 with tapered tips formed on the upper part of the flask 10 in the casting 1119. A positioning four case p-6 is provided. Thus, the positioning adventurer 6 is fixed to the movable frame 4 and supported by the nine rod holders 7 so as to be movable up and down, and is supported by the movable frame 4 and can be moved up and down by the nine positioning air cylinders. and
Drilling should be done before starting the casting process.
The movable frame 4 is positioned at a constant relative position with respect to the movable frame 9. Note that the movable pedestal 4 is always located at a slightly rear and right-hand side than its original position due to the nine springs 12 stretched in the front-rear direction and the springs 12 stretched in the left-right direction between the fixed pedestal 5 and the movable pedestal 4. is held in position.

9. A first movable tape A/13 is attached to the movable frame 4 so as to be movable in the front and back direction, and the first movable tape A/13 has a length of 1k.
A second movable cheagle 22 is attached to 13 so as to be movable in the left and right direction. The first movable table 15 is formed in the shape of a rectangular frame that is elongated in the left-right direction, and its left and right ends are fixed to the left and right upper surfaces of the movable pedestal 4, and is movably mounted on a guide tray 14 that extends in the front-rear direction. The bow is moved back and forth via a screw 15. That is, the ball nut v15 is fixed to the center of the rear hook of the movable tape A/15 so as to extend horizontally backward, and can be moved (8) into the nut holder 16 fixed on the movable frame 4. The nut 1 is screwed into the nut 17 housed in the nut 1.
It is moved forward and backward by the forward and reverse rotation of 7. Note that the naphto 17 is rotated by a stepping motor 19 that is capable of forward and reverse rotation and is attached to a placket 18 fixed on the movable frame 4 via a belt transmission *11120. Ball Ney15
passes through the driven pulley of the belt transmission 20 and the bracket 18.

On the other hand, the second movable tape &22 is connected to the first movable table 1.
5 and the first movable table 1!1
Ninety-two guide bars 25Ic are slidably fixed to the upper part of the #C horizontally parallel to each other in the left and right direction. A nine nut 24 attached to the lower surface of the second movable table 22 is screwed into a ball screw 25 which is horizontally supported on the first movable tape l&/13 in parallel with the guide bar 25 and rotatably supported. The second movable table 22 is moved left and right by forward and reverse rotation of v25. In addition,
The ball screw 5F25 is fixed to the first movable tape 13, is attached to the bracket 37, and is rotated from the tipping 4-126 to the tipping transmission 27, which is capable of nine forward and reverse rotations. In addition, the second movable table 22 has two
A base spindle et 28 is provided. The second movable tape A/22 includes the first movable tape A/1s, the movable pedestal 4, and the fixed pedestal, and is lowered downward and has nine front-open skirt portions 2! is formed, and each spindle et! The unit bodies 50 of sI are each Scar) 112? It is slidably attached to two guide rods 31 that are attached parallel to each other on the tC vertical wall IIl, and is moved up and down by an air cylinder 52 for raising and lowering the drill. Each unit body 50 has a bird A15
Nine spindles 715 are rotatably mounted with five chucks 54, and the spindles 35 are rotated by an air motor 56 for trill rotation.

The bird 1W55 is guided in its upward and downward movements by a pusher 21 attached to the lower part of the skirt portion 29.

Therefore, the above-mentioned vertical movement of the 9th position stirrup determining locator 6,
The two-dimensional horizontal compound movement of the forward and backward movement of the first movable table 13 and the left and right movement of the second movable table 22 applied to the spindle unit 28, as well as the rotation and vertical movement of the dovsyss, can be performed using, for example, a microcombi, etc. It is controlled by a control device according to a predetermined schedule.

That is, the mold 9 that is intermittently transported by the mold transport twin
However, when the hole reaches the position, the positioning air cylinder 8 is activated to lower the positioning locator 6 and fit it into the knock pin 11 of the flask 10 at the flask hole 6, but in this case, as described above, Movable pedestal 4 on fixed pedestal 5
can freely move back and forth and left and right through the port 415, so the above-mentioned fitting operation is carried out without difficulty, and the movable pedestal 4 and the mold 9 are fixed with a fixed lid relationship. In such a state, the stepping motors 19, 26 are respectively rotationally driven, and the forward motion is also transferred to the first movable tape/13 via the transmissions [20, 27 and the ball screws 15, 25]. The movable table 22 is given a lateral movement to the left or right to guide the drill 53 (one or, as the case may be, both) to a predetermined drilling position and stop there.

Next, the air motor 55 for rotating the drill and!
+The air cylinder 62 for the sieve is operated, and the drill 55 descends while rotating to drill a hole in the Is type 9, and after piercing, it is reversed and returned to the moped pupil upward. Thus, 1
After completing the formation of the two gas vent holes, the above-mentioned Koumei then repeats the work according to the program to create one gas vent hole.
A predetermined number of gas vent holes are formed in one mold 9, and when all the holes are completed, the positioning locator 6 is pulled out from the knock pin 11, the movable pedestal 4 is separated from the mold 9, and the first. Second movable tape/L' 13゜2
2 are returned to their stock positions in preparation for drilling holes in the next mold.

In this embodiment, a set of movable tables 13 and 22 IC spindle units 28 that perform two-dimensional horizontal movement are used.
However, basically one unit is sufficient. nine,
It is also possible to install two sets of movable tables each equipped with a spindle unit F on the movable frame 4, and such a configuration is effective in shortening the cycle time of work. Furthermore, it is possible to replace the ball screws 15 and 25 as a means of moving each table with a hook-and-pinion, belt, or chain-type transmission device, or use wheels as a means of guiding movement of the cheagles, and the guide rod of the spindle unit 28 51 may be omitted depending on the diameter of the drill and the quality of sand bound.

i9. In this embodiment, the rotary drilling using the drill 33 was explained as a form of rotary drilling, but the drilling can also be performed using a punching bunch instead of the drill, and If the punched hole is the type, the rotary drive mounting is omitted.

As can be described in detail above, the present invention is arranged above the # type conveyance line, and a first movable table is attached to the ninth frame so as to be movable in a direction parallel to the conveyance fins. A second movable table is mounted so as to be movable in a direction across the conveyor fins, and a tool holder for holding a rod-shaped drilling tool is mounted on this second movable table so as to be movable up and down, thereby installing a drilling machine for hot gas venting. It is composed of
Therefore, according to the present invention, the hole for the gas vent hole in the mold is #
111 can be performed automatically using mechanical power, it is possible to relieve the worker from working in harsh and adverse environments, and it is also possible to prevent the problem of forgetfulness.

[Brief explanation of drawings]

The drawings show the east gate of the present invention, FIG. 1 is a front sectional view of the perforation machine, FIG. 2 is a four sectional view, and FIG. 1g3 is a plan view. 1...Roller conveyor 5...Fixed pedestal 4...Movable pedestal 6...Positioning locator 8...Air cylinder for positioning 9...Mold 11...Dowel pin 15...First movable Table 22...Second movable table 28...Spindle unit 7) 50...Unit body 62...Drill! + Drilling air cylinder 65 - Drill 55 Spindle 36 Air motor for rotating drill Applicant Isuzu Manufacturing Co., Ltd.

Claims (1)

[Claims] A first movable table is attached to the mold stand placed above the mold conveyance fin so that it can move in a direction parallel to the conveyance fin.
A second movable tape is attached to the first movable table so as to be movable in a direction across the conveying fins, and a tool holder for holding a rod-shaped drilling tool is attached to the second movable table so as to be movable up and down. A drilling machine with a #-type gas vent hole.