KR20090100137A - Trimming apparatus for die casting product - Google Patents

Abstract

PURPOSE: A trimming device for a die-cast casting material is provided to perform trimming operation corresponding to the die-cast casting materials of various sizes easily and conveniently. CONSTITUTION: A trimming device for a die-cast casting material includes a runner part, a biscuit part, a trimming part(41), a die cast product settling part(27), a main body(21), and a biscuit clamping part(31). The biscuit part is molded on an end of the runner part. The trimming part is arranged on an upper side of a vent runner part and an overflow part. The trimming part trims the vent runner part and the overflow part. A die-cast product is settled on the on the die cast product settling part. The main body includes a biscuit settling part(29). The biscuit clamping part is arranged on the top of the biscuit settling part. The biscuit clamping part clamps the biscuit part settled on the biscuit settling part.

Description

Trimming device for die cast castings {TRIMMING APPARATUS FOR DIE CASTING PRODUCT}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trimming device for diecast castings, and more particularly to a trimming device for diecast castings for trimming unnecessary portions of diecast castings formed by diecasting operations.

Die-cast products are widely used in various mechanical parts because they can mass produce complex shaped metal products.

Die casting is a method of forming non-ferrous metals or their alloys with low melting point by applying pressure to the inside of a solid mold, and manufacturing molded products by injecting molten metal at a pressure higher than atmospheric pressure. It is widely used because it can be done.

In order to perform such a die casting, a die cast mold which is formed up and down and forms a cavity into which molten metal is injected to form a die cast product therein is widely used.

In general, a die caster is provided with a runner for injecting molten metal from the melting furnace into the cavity.

The die cast mold is also provided with a vent runner for discharging gas generated in the cavity to the outside during the die casting operation, and the vent runner is disposed to face the runner with the cavity interposed therebetween.

In addition, an overflow in which the molten metal in the cavity overflows is installed in the die cast mold, and the overflow is installed in one side of the cavity so as to communicate with the cavity.

Accordingly, after the molten metal flows from the melting furnace toward the cavity through the runner, the molten metal is injected into the cavity by the action of the piston, the cylinder and the plunger to separate the die cast mold, and as shown in FIG. As described above, a die cast product in which a die cast product having a cavity shape, a runner portion having a shape of a runner, a vent runner portion having a shape of a vent runner, and an overflow portion having an overflow shape are obtained. On the other hand, the end portion of the runner portion of the die-cast casting is formed with a biscuit portion that can be clamped by the robot or the like during the movement of the die-cast casting.

As a pretreatment operation for obtaining a desired diecast product from such a diecast casting, a trimming operation for removing unnecessary parts other than the diecast product and the runner part and the biscuit part, that is, the vent runner part and the overflow part, is performed. Is done.

Accordingly, the present applicant has developed a trimming device for die cast castings that can easily perform the trimming operation of the die cast castings.

The problem to be solved by the problems of the background art, according to the present invention, is to provide a trimming device for die-cast castings that can easily perform the trimming operation.

Another object of the present invention is to provide a trimming apparatus for a die cast casting according to the present invention, which can perform a trimming operation corresponding to die castings of various sizes in a single device.

According to the present invention, a solution for solving the above problems is a trimming apparatus for a die cast casting, which trims a die cast product in which a runner portion, a biscuit portion, a vent runner portion, and an overflow portion are formed on the end of the runner portion in addition to the die cast product. A main body comprising: a main body having a die cast product seat portion on which a die cast product of the die cast casting is seated, and a biscuit seat portion on which the biscuit portion is seated; A biscuit clamping part disposed above the biscuit seating part, the biscuit clamping part lifting up toward the biscuit seating part and clamping the biscuit part seated on the biscuit seating part; A biscuit clamping portion disposed above the vent runner portion and the overflow portion of the die-cast casting clamped to the vent runner portion and the overflow portion, including a trimming portion trimming the vent runner portion and the overflow portion; It provides a trimming device for die-cast casting, characterized in that.

The trimming unit may include: a plurality of trimming jigs provided to face the vent runner unit and the overflow unit; A jig support plate on which the plurality of trimming jigs are supported; It is preferable to include a jig lifting drive for lifting the jig support plate.

In addition, the jig support plate is formed by a plurality of jig mounting portion for selectively mounting the trimming jig corresponding to the position of the vent runner portion and the overflow portion, thereby trimming the work corresponding to the die-cast casting of various sizes in a single device Will be able to perform

One end of the trimming jig facing the vent runner part and the overflow part is equipped with a hammer made of one of MC nylon and rubber, thereby reducing the impact force transmitted to the diecast product when the trimming jig is trimmed. It can reduce the damage of die-cast products.

A male thread is formed at the other end of the trimming jig mounted on the jig mounting part, and the trimming jig may be mounted to the jig mounting part by a nut screwed to the male screw.

In another embodiment, a female thread is formed at the other end of the trimming jig mounted to the jig mounting part, and the trimming jig may be mounted to the jig mounting part by a bolt screwed to the female screw.

The jig lifting drive unit, the jig cylinder body to operate by the fluid pressure; It is preferable to include a lifting rod for supporting the jig support plate, the length of the jig support plate to increase and decrease by the operation of the cylinder body for jig to elevate the jig support plate.

The biscuit clamping unit, the clamping cylinder body which is operated by the fluid pressure; It is preferred that the clamping rod includes a clamping rod that extends and contracts by the operation of the clamping cylinder body to approach and space the biscuit seating portion, and clamp and release the clamping portion of the biscuit seating portion.

Therefore, according to the solution of the said subject, a trimming operation can be performed easily. It is also possible to carry out trimming operations corresponding to diecast castings of various sizes in a single device.

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

In general, as shown in FIG. 1, a die cast casting 10 cast by a die cast mold includes a die cast product 11 to be obtained, a runner portion 13 having a shape of a runner of the die cast mold, and the like. And a biscuit part 15 formed at the end of the runner part 13 and which the robot or the like can clamp when the die cast casting 10 moves, and a vent runner part having a shape of a vent runner and an overflow of a die cast die ( 17) and the overflow portion 19 are molded.

2 to 5, except for the die cast product 11, the runner portion 13, and the biscuit portion 15 of the die cast casting 10, that is, the vent runner portion 17 and the overflow portion ( A trimming device 20 for a die cast casting according to the invention for trimming 19 is shown.

The trimming device 20 for die-cast casting has a main body 21 of a rectangular frame shape.

The plate-shaped base plate 25 is arranged horizontally inside the main body 21.

The base plate 25 is provided with a die-cast product seating portion 27 on which the die-cast product 11 of the die-cast casting 10 is seated, and a biscuit seating portion 29 on which the biscuit portion 15 is seated.

The die cast product mounting part 27 serves to stably support the lower surface of the die cast product 11 seated during trimming of the die cast casting 10 to prevent the die cast product 11 from being deformed. .

The biscuit seating part 29 clamps the biscuit part 15 together with the clamping rod 35 of the biscuit clamping part 31 which will be described later when trimming the die cast casting 10. Here, the upper surface of the biscuit seating portion 29 is preferably formed with tooth-shaped unevenness, and thus the adhesion between the biscuit portion 15 together with the clamping rod 35 during trimming of the die-cast casting 10. It can be increased.

The biscuit clamping portion 31 has a clamping cylinder body 33 that operates by fluid pressure, and a clamping rod 35 that extends and contracts in length by the operation of the clamping cylinder body 33.

The clamping rod 35 is disposed above the biscuit seating part 29 to approach and space the biscuit seating part 29, and clamp and release the biscuit part 15 to the biscuit seating part 29.

On the other hand, the trimming device 20 for die-cast casting according to the present invention includes a trim runner portion 17 and the trimming portion 41 for trimming the overflow portion 19 of the die cast casting (10).

The trimming part 41 is disposed above the vent runner part 17 and the overflow part 19 of the die cast casting 10, and elevates and vents the vent runner part 17 and the overflow part 19. The runner section 17 and the overflow section 19 are trimmed.

The trimming section 41 includes a plurality of trimming jigs 43 provided to face the vent runner section 17 and the overflow section 19, and a jig support plate 55 on which the trimming jigs 43 are supported. And a jig elevating driving portion 61 for elevating the jig supporting plate 55.

The trimming jig 43 has a rod shape of a predetermined length.

One end portion of the trimming jig 43 facing the vent runner portion 17 and the overflow portion 19 is provided with a hammer 45 made of one of MC nylon and rubber. Accordingly, when the trimming jig 43 trims the vent runner portion 17 and the overflow portion 19, the impact force transmitted to the die cast product 11 may be reduced to reduce the damage of the die cast product 11. do. Here, the hammer 45 may be selectively interposed as necessary.

The other end of the trimming jig 43 is supported by the jig support plate 55. Here, as shown in FIG. 4, the male screw 47 is formed at the other end of the trimming jig 43 to support the trimming jig 43 on the jig support plate 55 by the nut 49, or in FIG. 5. As shown, a female thread 51 is formed at the other end of the trimming jig 43 to support the trimming jig 43 on the jig support plate 55 by the bolt 53.

The jig support plate 55 has a plate shape, is horizontally disposed, and is disposed above the base plate 25.

The upper surface of the jig support plate 55 is provided with a plurality of screw holes coupled to the fastening bolt 67 for fastening the free end of the lifting rod 65 of the jig lifting drive unit 61 to be described later to the jig support plate 55 ( 59 is formed. The screw hole 59 is recessed to a predetermined depth from the upper surface of the jig support plate 55.

In addition, the jig support plate 55 includes a plurality of jig mounting portions 57 in which the trimming jig 43 is selectively mounted in correspondence with the positions of the vent runner portion 17 and the overflow portion 19 of the die cast casting 10. ) Is provided. The jig attachment portion 57 is formed through the plate surface of the jig support plate 55. Thus, the trimming apparatus 20 for die cast casting according to the present invention can change the mounting position of the trimming jig 43 corresponding to the die cast casting 10 of various sizes, it is possible to perform the trimming operation.

On the other hand, Figure 4 and 5 shows an embodiment of the assembly of the trimming jig 43 and the jig support plate 55.

As an example, as shown in FIG. 4, when the male screw 47 is formed at the other end of the trimming jig 43, the jig is formed so that the other end of the trimming jig 43 protrudes from the plate surface of the jig support plate 55. After penetrating the jig mounting portion 57 of the support plate 55, the male screw 47 is screwed with the nut 49, so that the trimming jig 43 is mounted on the jig mounting portion 57, that is, the jig support plate ( 55).

As another embodiment, as shown in FIG. 5, when the female thread 51 is formed at the other end of the trimming jig 43, the other end of the trimming jig 43 is brought into close contact with the lower plate surface of the jig support plate 55. Thereafter, the trimming jig 43 is attached to the jig mounting part 57 by screwing the bolt 53 through the jig mounting part 57 and screwing with the female screw 51 of the trimming jig 43.

The jig lifting and lowering unit 61 supports a jig cylinder body 63 that operates by fluid pressure and a jig support plate 55, and a lifting rod that extends and contracts in length by operation of the cylinder body 63 for jig. It is preferable to include 65.

The lifting rod 65 is disposed above the jig supporting plate 55, and the free end of the lifting rod 65 is supported by the jig supporting plate 55 by the fastening bolt 67. Accordingly, as the lifting rod 65 moves up and down, the jig support plate 55 moves up and down, and the trimming jig 43 mounted on the jig support plate 55 is attached to the vent runner portion 17 and the overflow portion 19. Approach and space.

Here, reference numeral 23, which is not described, is a scrap discharge chute for discharging scraps such as the vent runner 17 and the overflow 19 of the trimmed die cast casting 10 to the outside of the main body 21. The scrap discharge chute 23 is positioned below the base plate 25 and is inclined downward on the main body 21 to smoothly discharge scraps such as the trimmed vent runner 17 and the overflow 19. have. The script discharge chute 23 may be selectively interposed as necessary.

By such a configuration, a trimming operation of the die cast casting 10 using the die casting casting trimming device 20 according to the present invention will be described.

First, the die cast casting 10 is automatically supplied to the main body 21 by a robot (not shown), so that the die cast product 11 and the biscuit portion 15 of the die casting casting 10 are Respectively, the diecast product seating portion 27 and the biscuit seating portion 29 are seated.

Next, when the die-cast casting 10 is seated on the main body 21, the clamping cylinder body 33 is operated to extend the clamping rod 35 of the biscuit clamping portion 31 to operate the clamping rod 35. The biscuit seating portion 29 is lowered.

As the clamping rod 35 is lowered by the operation of the clamping cylinder body 33, the clamping rod 35 biscuits the biscuit portion 15 of the die-cast casting 10 seated on the biscuit seating portion 29. Clamp on the seating portion 29. At this time, the die cast casting 10 does not flow and is clamped to the biscuit seating portion 29.

When the biscuit portion 15 of the die cast casting 10 is clamped to the biscuit seating portion 29, the operation of the clamping cylinder body 33 is stopped, and the lifting rod 65 of the jig lifting and lowering portion 61 is long. The cylinder body 63 for the jig is operated to extend so that the jig support plate 55 is lowered toward the lower side of the main body 21, that is, the trimming jig 43 supported by the jig support plate 55 is die-cast casting ( The vent runner part 17 and the overflow part 19 of 10 are lowered to approach.

As the trimming jig 43 is lowered by the operation of the cylinder body 63 for the jig, the trimming jig 43 as shown in FIG. 7 causes the vent runner portion 17 and the overflow of the die cast casting 10 to overflow. The vent runner part 17 and the overflow part 19 are trimmed in contact with the part 19.

When the trimming operation is completed, the cylinder body 63 for the jig is operated so that the lifting rod 65 shortens the length, so that the jig supporting plate 55 is raised above the main body 21, that is, the trimming jig 43 is removed. Spaced apart from the die cast casting 10.

Then, the clamping cylinder body 33 is operated to reduce the length of the clamping rod 35, so that the clamping rod 35 is spaced apart from the biscuit seating portion 29, so that the biscuit portion 15 of the die-cast casting 10 is carried out. ) Is released from the biscuit seat (29).

Subsequently, the robot clamps the biscuit part 15 seated on the biscuit seating part 29 and pulls it out of the main body 21, so that the trimming operation using the trimming device 20 for die cast casting according to the present invention is completed. .

In the die cast casting 10 in which the trimming operation is completed, as shown in FIG. 8, only the die cast product 11, the runner portion 13, and the biscuit portion 15 remain, and the die casting casting in which the trimming operation is completed. 10 is further processed in a subsequent process.

Meanwhile, when the size of the die cast casting 10 to be trimmed is changed in the trimming apparatus 20 for die casting casting according to the present invention, that is, the vent runner 17 and the overflow portion of the die cast casting 10 are changed. When the position of 19 is changed, the jig mounting portion 57 of the jig support plate 55 corresponds to the vent runner portion 17 and the overflow portion 19 of the die cast casting 10 to be trimmed. By changing the mounting position of the trimming jig 43 and performing the trimming operation as described above, the trimming operation can be easily performed corresponding to the die cast castings 10 having various sizes in a single device.

On the other hand, in the above embodiment, the jig lifting drive portion and the biscuit clamping portion is described as applying a cylinder body operated by the fluid pressure, it is also possible to apply a motor instead of the cylinder body. In addition, the cylinder body can be operated by any one of hydraulic, pneumatic, of course.

1 is a plan view of a die cast casting according to one embodiment;

2 is a front view of a trimming device for a die cast casting according to the present invention;

3 is a side view of FIG. 1;

4 is a perspective view of a combination of a trimming jig and a jig support plate of a trimming device for a die cast casting according to an embodiment of the present invention;

5 is a perspective view of a combination of a trimming jig and a jig support plate of a trimming device for a die cast casting according to another embodiment of the present invention;

6 and 7 is a side view showing a trimming operation of the trimming device for die cast casting according to the present invention;

8 is a top view of the trimmed diecast casting of FIG. 1.

* Explanation of symbols for the main parts of the drawings

1: diecast casting 11: diecast product

13: runner part 15: biscuit part

17: vent runner part 19: overflow part

21: main body 27: diecast product seating part

29: biscuit seating part 31: biscuit clamping part

33: cylinder body for clamping 35: clamping rod

41: trimming part 43: trimming jig

45: hammer 47: male thread

49: nut 51: female thread

53: bolt 55: jig support plate

57: jig mounting portion 61: jig lifting drive

63: cylinder body for jig 65: lifting rod

Claims (8)

In the die-casting trimming device for trimming die-cast casting molded in the runner portion, the biscuit portion formed at the end of the runner portion, the vent runner portion and the overflow portion in addition to the die cast product, A main body having a die cast product mounting portion on which the die cast product of the die cast casting is mounted, and a biscuit mounting portion on which the biscuit portion is mounted; A biscuit clamping part disposed above the biscuit seating part, the biscuit clamping part lifting up toward the biscuit seating part and clamping the biscuit part seated on the biscuit seating part; A biscuit clamping portion disposed above the vent runner portion and the overflow portion of the die-cast casting clamped to the vent runner portion and the overflow portion, including a trimming portion trimming the vent runner portion and the overflow portion; Trimming device for die-cast casting, characterized in that. The method of claim 1, The trimming unit, A plurality of trimming jigs provided to face the vent runner part and the overflow part; A jig support plate on which the plurality of trimming jigs are supported; Trimming device for die-cast casting, characterized in that it comprises a jig lifting drive for lifting the jig support plate. The method of claim 2, The jig support plate is a trimming device for die cast casting, characterized in that a plurality of jig mounting portion to which the trimming jig is selectively mounted corresponding to the position of the vent runner portion and the overflow portion. The method of claim 2, One end portion of the trimming jig toward the vent runner portion and the overflow portion is equipped with a hammer made of any one material of MC nylon, rubber. The method of claim 3, The other end of the trimming jig to be mounted to the jig mounting portion is formed with a male screw, the trimming jig is mounted to the jig mounting portion by a nut that is screwed with the male screw. The method of claim 3, A female thread is formed at the other end of the trimming jig mounted on the jig mounting part, and the trimming jig is mounted to the jig mounting part by a bolt screwed to the female screw. The method of claim 3, The jig lifting drive unit, A cylinder body for a jig operated by fluid pressure; And a lifting rod for supporting the jig supporting plate, and lifting and lowering the jig supporting plate by extending and contracting the length of the jig supporting body by the operation of the cylinder body for the jig. The method of claim 1, The biscuit clamping portion, A cylinder body for clamping operated by fluid pressure; Trimming for die-cast castings, characterized in that it includes a clamping rod for extending and contracting the length of the clamping cylinder body to access and space the biscuit seating portion, and clamping and unclamping the biscuit seating portion. Device.

Images