JPH0227961Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for removing insert metal fittings from defective die-cast products, and more specifically, the present invention relates to a device for removing insert metal fittings from defective die-cast products, and more specifically, a device for removing insert metal fittings from defective die-cast products. This invention relates to a device for removing (separating) metal fittings from defective die-cast products.

In order to reuse the cast alloy, such as aluminum, which is the molding material for this type of die-cast product that has become defective, and the metal insert fitting, it is necessary to take out the insert fitting and separate it from the cast alloy.

Therefore, conventionally, an operator would use a cutting machine to cut the defective die-cast product to remove the insert metal fittings, or throw the defective die-cast product into a furnace such as a melting furnace, melt the cast alloy, and remove the insert metal fittings. Ta.

However, in the former method, the operator must perform the cutting work himself, which increases the fatigue of the operator, is time consuming, and has poor workability.

In the latter case, after melting the cast alloy, the insert metal fittings are removed from the furnace where high-temperature air is trapped,
After taking out the insert, it is necessary to wash and remove deposits such as cast alloy adhering to the insert, which is troublesome and time-consuming, and has poor workability.

The present invention was developed in view of the above-mentioned conventional circumstances, and its purpose is to make it possible to easily and easily remove insert fittings from defective die-cast products, as well as to shorten the working time and improve workability. It is an object of the present invention to provide a device for removing metal inserts from defective die-cast products, which can be improved.

The basic configuration of the present invention is to install a jig to hold the defective die-cast product approximately in the center of the base, and to place cutter support stands on the left and right bases of the jig, and to place both cutter support stands on the left and right bases of the jig. The disc cutter is slidable from the left and right toward the jig, and a disk cutter for cutting defective die-cast products is attached to both cutter support stands so as to be able to rise and fall, and the cutter support stands are slid toward the jig so as to approach each other. After that, the left and right disk cutters are rotated and moved downward to cut the defective die-cast product set and held in the jig from the left and right sides.

An example of implementation of the present invention will be described based on the drawings.

Fig. 1 is a front view of the inventive take-out device, where A is the base, B is the jig, C and C are left and right cutter support stands, D and D are disc cutters, and both the left and right cutter support stands C, C has defective die-casting product 1
Disk cutters D and D, which cut from the left and right sides, are installed so that they can be raised and lowered, respectively.

The base A is a flat rectangular base plate with a hydraulic tank chamber and a cutting oil tank chamber inside, and a jig mounting base 2 is arranged and fixed at the center of the front end of the top surface, and the left and right sides of the mounting base 2 are fixed. Support frame mounts 3, 3 are arranged and fixed at the center on the side portion of the base A, facing each other.

The jig B is composed of a presser cylinder 4, an expansion tool 5, an expansion cylinder 6, a cylinder 7, and a support base 8 for mounting and supporting them.

The presser cylinder 4 is made of a metal material with spring properties and is used to hold and hold the defective die-cast product 1 by applying pressure to the inner peripheral surface of the insert fitting 9 that is integrally built into the defective die-cast product 1. The outside diameter is formed to a desired length that is slightly smaller than the inside diameter of the insert metal fitting 9, and the other wall thickness except for the vicinity of the upper and lower openings is formed to be thin, and the inside of the upper and lower openings is formed to a desired length. The slope portion 4a is formed by cutting the peripheral surface shape so as to gradually expand toward the opening edge.
4a, and slits 4b are formed on the peripheral wall from the upper and lower opening edges, respectively, so that the upper and lower opening edges have an expanding function. The slits 4b are provided alternately at appropriate intervals in the circumferential direction from the upper opening edge side and from the lower opening edge side.

The expander 5 supports the presser tube 4 with the expander tube 6 and expands and deforms the upper opening of the presser tube 4 outward, so that its overall shape is similar to the upper opening of the presser tube 4. A fitting slope 5 that is gradually inclined from the upper outer circumferential edge to the lower outer circumferential edge so as to fit into the inner part.
A is cut into a truncated conical shape, and a penetrating mounting hole 5b is formed in the shaft center,
Attach the mounting bolt 1 to the end surface of the rod 7a of the cylinder 7.
Fix by screwing through 0.

On the other hand, the expansion tube 6 expands and deforms the lower opening of the presser tube 4 outward, and has an outer circumferential surface of the upper portion facing toward the opening edge so as to fit into the lower opening of the presser tube 4. A gradually inclined fitting slope 6a is cut and formed, and a flange 6b is provided on the lower outer peripheral surface.
is formed in a protruding manner, and its flange 6b is screwed and fixed to the upper surface of the top plate 8a of the support base 8 via fixing bolts 11.

The cylinder 7 moves the expander 5 attached to the tip of the rod 7a up and down to open the expander 5 and the expander cylinder 6.
It serves to expand and deform the upper and lower openings of the presser cylinder 4 outward at the same time, and the mounting flange 7b formed protrudingly formed on the outer circumferential surface of the opening from which the rod 7a projects is attached to the lower surface of the top plate 8a of the support base 8. The rod 7a is screwed and fixed to the top plate 8a through a bolt 12, and the rod 7a is made to protrude from the top plate 8a.

The support stand 8 has an upright plate 8c between the top plate 8a and the bottom plate 8b to form a cylinder mounting chamber 13 therein, and is continuous with the left and right sides of the top plate 8a and the opposing left and right upright plates 8b. The relief slit 14 is formed and the disk cutters D, D cut the defective die-cast product 1 while the top plate 8a and the left and right upright plates 8
Aim to be able to cut smoothly without hitting c. Incidentally, the top plate 8a is composed of two plates, each of which has a notch, and the notches are aligned to form an escape slit 1.
4.

As described above, the support base 8 on which the presser tube 4, the expansion tool 5, the expansion tube 6, and the cylinder 7 are mounted and supported is the base A.
Install and fix on the upper jig mounting base 2. Reference numeral 15 denotes a cut product holder provided on the top plate 8a of the support base 8, which receives the defective die-cast product 1 with the insert fitting 9 fitted on the outside of the presser tube 4, and holds the defective die-cast product 1 with the presser tube 4. This allows it to be retained.

The left and right cutter support stands C and C attach and support the disc cutters D and D in a manner that they can be raised and lowered, respectively.
The disk cutters D, D are brought together from the left and right toward the jig B installed at the center of the front end on the base A. It is formed into a vertically long box shape, and the front and bottom surfaces are open. A pair of upper and lower beds 16, 16' are provided on the lower surface, and the bed is slidably placed upright on guide rails 17, 17 that are placed and fixed on support frame mounts 3, 3 on the upper left and right sides of the base A.

In addition, guide columns 18 spanning the entire height are attached and fixed in parallel to the left and right on the front surfaces of the cutter support stands C, C, and the lifting plate 1 extends across both the left and right guide columns 18.
9 is installed so that it can be raised and lowered freely.

The pair of upper and lower beds 16, 16' are respectively formed of metal plates having the same size as the lower surface shape of the cutter support frames C, C, and are slidably inserted and connected.

The upper bed 16 is used to adjust the amount of slide movement of the cutter support bases C and C toward the jig B by fitting and sliding with the lower bed 16'. A mating groove 16a is formed in a concave manner, and a long hole 16b is formed in the upper surface of the recessed portion of the groove 16a to be integrally attached and fixed to the lower surface of the cutter support bases C, C.

On the other hand, the lower bed 16' has a fitting rail 16'a projecting from its upper surface to fit into the fitting groove 16a of the upper bed 16 and extending over its entire length in the longitudinal direction, and guide rails 17, 17 formed on its lower surface. A recessed groove 16'b for slidably fitting and connecting is formed across the entire length in the longitudinal direction, and the groove width of the recessed groove 16'b is formed to be the same width as the upper surface width of the guide rails 17, 17. .

In addition, both wall surfaces of the fitting groove 16a of the upper bed 16 and both wall surfaces of the fitting rail 16'a of the lower bed 16' are cut and formed into an inverted V-shape on the sides as shown in the figure, so that the upper bed 16 is aligned in the vertical direction. Aim for horizontal movement in the sliding direction without wobbling.

The guide rails 17, 17 are box-shaped with an open top and formed into a horizontally elongated rectangular shape in plan, and have a first cylinder 20 built therein that is fixed and protrudes through from the rear wall side. Connect the tip of the rod 20a to the concave groove 1 of the lower bed 16'b.
It is connected and fixed to a vertical fixture 21 which is vertically fixed to the upper surface of the recess 6'b.

Further, a screw shaft 22 for adjusting the stroke amount of the rod 20a of the first cylinder 20 is attached to a nut 23 on the front wall of the guide rails 17, 17.
Provided via.

24 is the upper bed 1 for the lower bed 16'
This is a fine adjustment handle for adjusting the amount of slide movement of the cutter support bases C and C toward the jig B, and this handle 24 is attached to the lower part of the back wall of the cutter support bases C and C. The threaded rod 24', which is horizontally projected into the cutter support stands C, C, is screwed into the nut 26 of the protruding tool 25, which is erected and fixed on the lower bed 16' and projected from the elongated hole 16b of the upper bed 16. Connect.

The left and right cutter support stands C, C are directed toward the jig B by the first cylinders 20 built into the guide rails 17, 17, respectively.
7 and 17, respectively, so that the defective die-cast product 1 held by the jig B can be cut from the left and right sides using the disc cutters D and D.
Also, turn the fine adjustment handle 24 to adjust the lower bed 1.
By sliding the upper bed 16 with respect to 6' and adjusting the amount of movement of the cutter support stands C, C toward the jig B, the amount of cut into the defective die-cast product 1 by the disc cutters D, D can be adjusted. can be adjusted. That is, the disk cutters D, D can be made to cut until the blade edges of the disk cutters D, D barely reach the outer surface of the insert fitting 9 in the defective die-cast product 1. 27 is upper bed 1
It is a locking lever provided on the outer surface of one side wall of 6.
This locking lever 27 is for locking the upper bed 16 to the lower bed 16' so that the upper bed 16 does not slide freely relative to the lower bed 16'.

The disk cutters D, D are attached to a rotating shaft 28' of a main shaft case 28, and are rotated by a drive motor 29 linked to the rotating shaft 28' to cut the defective die-cast product 1 from the left and right sides.

The main shaft case 28 and the drive motor 29 are respectively attached and fixed to the front surface of the elevating plate 19, and a pulley 30 is attached to the rotating shaft 28' of the main shaft case 28, and a pulley 31 is attached to the drive shaft 29' of the drive motor 29.
A belt 32 is stretched between the two to link the two.

The elevating plate 19 is moved up and down by the second cylinder 33.

This second cylinder 33 has its rod 33a tip suspended behind the lifting plate 19 between the left and right guide columns 18 from the upper surface of the cutter support stands C and C, and the rod 33a tip is suspended from the lifting plate 19
The elevating plate 19 is supported and moved up and down by being connected to a connecting tool 35 fixedly attached to the back surface of the plate. Reference numeral 36 is a weight for balancing the lifting plate 19 when it moves up and down and for ensuring that the disc cutters D, D can cut the defective die-cast product 1 smoothly without rattling while cutting.This weight 36 has one end attached to the lifting plate. 19, and the other end is suspended from the upper wall of the cutter support stand C, C into the support frame C, C.
7 and moves up and down as the elevating plate 19 moves up and down. 38 is a cutter support stand C;
This is a sprocket installed on the top wall of C.

Next, to explain the operation of the device for taking out the insert metal fitting 9 constructed as above, first, the jig B
Fit and insert the internal insert fitting 9 into the presser tube 4, place the defective die-cast product 1 on the cut product holder 15, turn on the main switch (shown) to operate the cylinder 7, and press the upper and lower openings of the presser tube 4. The defective die-cast product 1 is pressed and held by expanding and deforming outward by the expanding tool 5 and the expanding cylinder 6.

Thereafter, by the operation of the first cylinder 20, the cutter support stands C and C slide toward the jig B, respectively, and the left and right disc cutters D and D are positioned on the defective die-cast product 1 (Fig. 4). ).

At this time, the width between the cutting edges of the two disk cutters D, D placed on the defective die-cast product 1 is approximately equal to the outer diameter width of the insert fitting 9. When the above-mentioned movement of the left and right cutter support stands C, C stops, the second cylinder 33 and the drive motor 29 start operating.
Then, the disk cutters D, D move downward while rotating and cut the defective die-cast product 1 from the left and right sides (FIG. 5). When the cutting is completed, the first cylinder 20 starts operating again, and the left and right cutter support stands C,
Slide C and move it backwards. When the cutter support bases C and C stop moving backward, the second cylinder 33 starts operating and the disc cutters D and C stop moving backward.
This is to move D upward. These movements are automatically controlled by a control panel (shown in the figure) that is electrically connected to the main switch, and the disc cutter D,
D is something that moves. Left and right cutter support stand C,
When C and the disc cutters D and D return to their predetermined positions, the cylinder 7 is activated to release the hold on the metal insert 9, and the metal insert 9 is removed from the jig B.

Reference numeral E denotes a safety cover that covers the entire extraction device of the present invention, and the front surface of this cover E is opened, and an opening/closing door F is provided in the opening so as to be slidable left and right.

As mentioned above, the present invention installs a jig to hold the defective die-cast product approximately in the center of the space, arranges cutter support stands on the left and right bases of the jig, and also places cutter support stands on the left and right bases of the jig. Disk cutters for cutting defective die-cast products are attached to both cutter support stands so as to be able to move up and down, and after sliding both cutter support stands toward the jig, the left and right The insert fitting can be taken out by cutting the defective die-cast product set and held in the jig from the left and right by moving the disc cutter downward while rotating, so that the insert fitting can be taken out easily and easily. It's simple.

Moreover, since the metal insert can be taken out automatically, the time required for taking out the metal insert can be shortened, the work efficiency can be improved, and the fatigue of the operator can be reduced.

Thus, the intended purpose can be achieved.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the present invention; FIG. 1 is a front view showing the entire device with a portion cut away, FIG. 2 is a side view showing the same with a portion cut away, and FIG. 3 is a plan view of the same. Figures 4 and 5 are front views showing the movement of the left and right cutter support stands and the disc cutter, Figure 6 is a plan view showing the jig enlarged, and Figure 7 is a partially cutaway diagram. FIG. 6 is a cross-sectional view taken along the line -- in FIG. 6, FIG. 8 is a cross-sectional view taken along the line -- in FIG. 6, and FIG. 9 is an exploded perspective view showing a part of the parts constituting the jig. In the diagram, A...Base, B...Jig, C, C...
Cutter support stand, D, D...Disc cutter, 1...
... Defective die-cast product, 9... Insert metal fittings.

Claims (1)

[Scope of utility model registration request] A jig for holding the defective die-cast product is installed approximately in the center of the base, and cutter support stands are placed on the left and right bases of the jig, and both cutter support stands are slidable toward the jig from the left and right, This is a device for taking out metal inserts in defective die-cast products, in which disk cutters for cutting defective die-cast products are attached to both cutter support stands so as to be able to move up and down.