JPS6049063B2 - Core insertion device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for inserting a core into a mold, and provides a device that can insert a core into an accurate position without damaging the mold or the core when inserting the core. There are things that are intended to do that.

That is, the core insertion device of the present invention has a core holder that moves forward and backward relative to the mold, and a guide plate is provided between the mold and the core holder. It is characterized by being provided with means for positioning with the mold and a guide hole for guiding the core holder, and in which two of the mold, the core and the guide plate are supported so as to be freely movable in a horizontal plane. By inserting the core into the mold through the guide hole with the mold and core holder positioned in contact with the guide plate, the core can be inserted into the mold in an accurate position without damaging the mold or the core. This allows you to insert children. FIG. 1 is a diagram showing one embodiment of the core insertion device of the present invention, and FIG. 2 is a diagram showing one embodiment of the core holder. Hereinafter, a detailed explanation will be given based on the illustrated embodiment.

In FIG. 1, the frame of the device is omitted, and 1 in the figure is a running girder installed on a frame (not shown), 2 is a bogie running on the running girder 1, and the figure shows guide wheels 3 and 3.・・・
...3 is shown.

4... 41 is a guide block fixed to the truck 2, 5 is a cylinder device mounted on the truck 2, 6 is an elevating frame, and the rod of the cylinder device 5 is connected to the elevating frame 6. This elevating frame 6 is provided with guide blocks 7, 7 that slide into the through holes of the guide block 4.

8 ... 8 is a core holder which will be described later, and this core holder 8 is connected to the lifting frame 6 by a support rod 9 having two universal joints therein, and each core holder 8 have a structure that allows them to move in a horizontal plane.

10 is a mold, 11 is a mold frame, and this mold frame 11 is implanted with a truncated conical protrusion 12 for fitting the upper and lower molds together.

The mold 10 is placed on a surface plate 13 that runs in a direction perpendicular to the plane of the drawing, 14, 14 are wheels attached to the surface plate 13, 15, 15 are running rails, and the mold 10 is not shown. After being molded by the molding machine, it is moved to the core insertion station shown in the first figure. 16, 16 are guide posts erected around the core insertion station; 17, 17 are lifting blocks that slide on the guide posts 16; 18, 18 are pulleys mounted on a frame (not shown); 19, 19 is a wire that has one end connected to the lifting block 17 and the other end connected to a drive device (not shown) via a pulley 18.

The lifting block 17 has a protrusion 21 that engages with the collar of the formwork 11.
is provided, and the mold 10 is raised by moving the lifting block 17 upward. A guide plate 22 is suspended from a frame (not shown) by chains 23, 23, and the guide plate 22 has a guide hole 2 for guiding the guide sleeve 24 of the core holder 8.
5 and positioning holes 27, 27 to be fitted with the positioning projections 12 of the formwork 11 are provided.

This guide plate 22 is suspended by a chain 23, so that it can freely move in a horizontal plane. FIG. 2 is a sectional view showing the details of the core holder 8.
Reference numeral 8 denotes a base body connected to the lifting frame 6 by a support rod 9.

The support rod 9 has two ball joints 29 indicated by broken lines,
29, and the structure is such that the base body 28 can freely move in a horizontal plane by swinging at the positions of these ball joints 29, 29. 30 is a cylinder device mounted on the base body 28, 31 is a drive rod connected to the rod of the cylinder device 30 and swings within the base body 28, and 32 is a bush rod inserted into the axis of the drive rod 31 so as to be swingable. , 33 is a spring interposed between the drive rod 31 and the bushing rod 32 to urge the bushing rod 32 downward, and 34 is a collar formed on the bushing rod 32 as a stopper.

The guide sleeve 24 is slidably fitted onto the base body 28 and urged downward by a spring 35, and has a flange 36 that is to be brought into contact with the guide bush 26. The guide sleeve 24 is fitted with the guide bush 26 to position the core holder 8, and when the flange 36 and the guide bush 26 are not in contact with each other, the guide sleeve 24 is moved downward by the spring 35 to move the core holder 8. Core 3 held by holder 8
7 and serves to protect the core. Reference numerals 38 and 38 indicate fingers for gripping the core 37, and two or three of these fingers 38 are provided and are pivoted by a pin 39 on an extending portion 28a of the base body 28 extending between the fingers 38 and 38. has been done.

The finger 38 integrally has an arm 40 extending upward and a protrusion 41 formed inward, while the driving rod 31 has inclined surfaces 42 and 43 that engage with the arm 40 and the protrusion 41. is formed so that the fingers 38 can be opened and closed by raising and lowering the drive rod 31.
That is, by moving the driving rod 31 upward by the cylinder device 30, the inclined surface 42 presses the arm 40 outward, the fingers 38 close and grip the core 37, and the driving rod 31
When moved downward, the engagement between the inclined surface 42 and the arm 40 is released, and the inclined surface 43 presses the protrusion 41 to open the finger 38, and the driving rod 31 further moves downward, compressing the spring 33. By doing so, the bushing rod 32 can connect the core 37.
The structure is such that the mold 10 is firmly inserted into the mold 10 by being compressed. The operation of the apparatus constructed as above will be explained with reference to FIG.

The mold 10 formed by the molding machine is appropriately inverted, sand is removed, and then moved to the core insertion station. On the other hand, the core holder 8 grips a core from a core pallet (not shown) placed on the right or left side of FIG. 1, moves along the traveling girder 1, and conveys the core to a core insertion station. It's coming.
During this core transportation, the guide sleeve 24 of the core holder 8
covers and protects the core. Next, the cylinder device 5 is operated to move the core holder 8 downward and the wire 19 is moved downward.
to move the mold 10 upward, and move the guide sleeve 24 of the core holder 8 to the guide bush 2 of the guide plate 22.
6, the core holder 8 is positioned by the guide plate 22, and the protrusion 12 of the formwork 11 is inserted into the positioning hole 27 of the guide plate 22 to guide the formwork 11. Positioning is performed by plate 22. This positioning operation is possible because the core holder 8 and the guide plate 22 are freely supported in a horizontal plane, so that the guide sleeve 24, the positioning protrusion 12, and the guide hole 25
, 27 can be automatically formed by forming tapered surfaces as appropriate. Thereafter, by operating the cylinder device 30 provided in the core holder 8, the core is released and pressed downward as described above, and the core is inserted into a predetermined position in the mold 10, and the core is placed in the core holder. 8 moves up, the mold 10 moves down, and the mold 1.0 moves to the next mold matching station, and the core holder 8 moves to the core pallet to hold the core for the next mold. moving towards.
The core insertion device of the present invention continuously inserts the core into the mold 10 by repeating the above-described operations. By positioning 8 and the mold 10 via the guide plate 22, the core can be reliably placed at a predetermined position in the mold 10 without causing the core to come into contact with the guide bush 26 or the mold 10 and damaging them. You can insert it.

Furthermore, by employing the core holder 8 as shown in the illustrated embodiment, it is possible to prevent damage to the core during transport and positioning of the core. Therefore, the core can be gripped, released, and pressed against the mold, and the core can be inserted more reliably.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a front view of the core insertion station with the frame omitted;
The figure is a sectional view showing the detailed structure of the core holder. In the figure, 2 is a trolley, 5 is a cylinder device, 6 is a lifting frame, 8 is a core holder, 9 is a support frame, 10 is a mold, 11 is a formwork, 1
2 is a positioning protrusion, 13 is a surface plate, 16 is a guide post,
17 is a lifting block, 19 is a wire, 21 is a protrusion, 22
is a guide plate, 23 is a chain, 24 is a guide sleeve, 25 is a guide hole, 26 is a guide bush, 27 is a positioning hole, 29 is a ball joint, 30 is a cylinder device, 31 is a drive rod, 32 is a bush rod, 33, 35
is a spring, 37 is a core, 38 is a finger, 40 is an arm,
41 is a protrusion, and 42 and 43 are inclined surfaces.

Claims (1)

[Claims] 1. It has a core holder 8 that moves forward and backward relative to the mold 10, and a guide plate 22 is provided between the mold and the core holder, and the guide plate is provided with a mold. 10
positioning means 12, 27 and a guide hole 25 for guiding the core holder 8, and two of the mold 10, the core holder 8 and the guide plate 22 are supported freely in a horizontal plane. A core insertion device, characterized in that the mold and the core holder are positioned by a guide plate, and the core is inserted into the mold through the guide hole. 2. The core insertion device according to claim 1, wherein the core holder 8 has a guide sleeve 24 that moves forward and backward and also serves as a core protection cover. 3. The core holder 8 has a driving rod 31 that is connected to the cylinder device 30 and moves forward and backward, a finger 38 that opens and closes by contacting the inclined surfaces 42 and 43 of this driving rod, and a bullet 3 attached to the driving rod.
3. The core insertion device according to claim 1 or 2, further comprising a push rod (32) attached via a push rod (32).