JPH0349768Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a press for trimming burrs and runners (hereinafter referred to as burrs, etc.) attached to cast products such as die castings.

Conventionally, the burrs etc. attached to the above-mentioned cast product are trimmed and then stored in the lower mold of the press, the product is held in the upper mold of the press, and then the lower mold is turned over to remove the burrs etc. from the lower mold. Was. However, this method has the disadvantage that the entire press and equipment become larger and the cost becomes higher.

Therefore, with an emphasis on cost, there is a method in which the burrs and the like are trimmed from the cast product and then removed by hand, but since the hands are inserted into the press, there is a problem in workability.

The purpose of this invention is to provide a small, low-cost burr trimming press that can easily and reliably trim burrs from a workpiece and accumulate them at a predetermined location outside the lower mold without storing them in the lower mold.

In order to achieve the above object, this invention has an upper die that is movable in the vertical direction, a lower die that is movable in the horizontal direction and supports the workpiece with burrs, etc. At the bottom, there is a chute provided on the lower die, a clamp mechanism attached to the upper die, which trims burrs etc. on the workpiece supported by the lower die by lowering the upper die, and holds the workpiece on the upper die after trimming, and the upper die. and a mechanism for ejecting the work clamped by the upper die from the upper mold.

This invention will be explained below with reference to drawings showing embodiments. In the figure, an upper die plate 1 is movable in the vertical direction, and a box-shaped upper mold 3 having a rectangular cross section is attached to its lower surface via a dish-shaped bracket 2. A work holder 4 is slidably inserted into the upper mold 3, and the lower ends of two rods 5, 5 parallel to the peripheral wall of the upper mold 3 are attached to the upper surface of the work holder 4. The rods 5, 5 slidably pass through the bracket 2, and their upper ends can enter into guide holes 6 provided in the upper die plate 1. Flange-shaped stoppers 5a, 5a are provided at the upper ends of the rods 5, 5 to prevent the rods 5, 5 from falling from the bracket 2. Stoppa 5
Above the guide holes 6a and 5a, the extrusion plate 7
is slidably inserted within.

The lower die 8 is attached to the upper surface of a lower die plate 9, and the plate 9 is movable laterally (in the lateral direction of the arrow shown) on a rail (not shown). A workpiece 10 is set on the lower mold 8. Reference numerals 11 and 12 denote a burr and a runner, respectively, attached to the workpiece 10, and below these, the lower mold 8 is provided with downwardly inclined chute 13 and 14.

On the other hand, a clamp mechanism 15 is attached to the lower end of the upper die 3 for trimming the burr 11 and the runner 12 and holding the workpiece 10 on the upper die after trimming. As shown in FIG. 2, the clamping mechanism 15 includes a cylindrical body 15a having a stepped inner hole, a pin 15b that is loosely fitted into the cylindrical body 15a and partially protrudes from the cylindrical body 15a, and a compression spring that biases the pin 15b. 15c and a cap 15d that supports the compression spring 15c. The pin 15b engages with a portion of the workpiece 10 to prevent the workpiece 10 from falling. Further, the rods 5, 5 are provided with a ring-shaped groove 16 as shown in FIG. 2, and a pin 17b of a clamp mechanism 17, which has the same structure as the clamp mechanism 15 and is attached to the bracket 2, is engaged with this groove 16.

In the above configuration, the workpiece 10 set in the lower die 8 is placed in position P in the lateral direction together with the lower die 8.
1 to position P2 directly below the upper mold 3 and stop. Here, the upper mold 3 descends to the height h1, holds the work 10 with the work holder 4 previously positioned below, trims the burr 11 and runner 12 with the edge 15e of the clamp mechanism 15, and moves the work 10 into the upper mold. 3
Clamp on. At this time, the workpiece presser 4 is
Since the workpiece 10 rises relative to the upper mold 3 while contacting the upper surface of the workpiece 10, the rods 5 and 5 also rise, and while the clamp mechanism 15 is clamping the workpiece 10 to the upper mold, the pin 17b of the clamping mechanism 17 moves between the rods 5 and 5. It engages with the groove 16 and locks the work holder 4. The burrs 11 and runners 12 trimmed from the workpiece 10 slide down over the chutes 13 and 14, respectively, and fall onto a conveyor (not shown).

Next, the workpiece 10 and the workpiece holder 4 are held by the upper die 3 via the clamping mechanism 15 and the clamping mechanism 17, respectively, and are transferred to the next process. In the next process, the push-out plate 7 pushes the rod 5 that is locked by the clamp mechanism 17, descends to the height h2, pushes down the work holder 4, releases the work 10 from the upper die 3 by the work holder 4, and returns to the initial stage. Return to state. Note that since the pin 17b of the clamp mechanism 17 is pressed against the rod 5 by the spring force of the compression spring 17c, the workpiece holder 4 will not come into contact with the workpiece 10 in an impact even if it receives the pressing force of the extrusion plate 7.

Since this invention has the above-mentioned configuration, it has the following excellent effects.

(b) Since the burrs and runners are discharged by a chute onto a conveyor, etc., there is no need to invert the lower mold or provide a separate drive mechanism to remove the burrs and runners, which is required in the conventional method, and the device becomes smaller. become.

(b) The clamping mechanism for the work holder prevents the work holder from impacting the work, reducing damage to the work holder.

(c) The workpiece is securely held in the upper mold by the clamping mechanism for the workpiece.

[Brief explanation of the drawing]

FIG. 1 shows a front view of an embodiment of this invention.
FIG. 2 shows an enlarged front view of the main part of FIG. 1. 3... Upper die, 8... Lower die, 10... Work, 1
3... Shoot, 15... Clamp mechanism, {4...
... Workpiece presser, 7... Extrusion plate, 17... Workpiece presser clamp mechanism, } Workpiece delivery mechanism.

Claims (1)

[Scope of utility model registration request] An upper mold that is movable in the vertical direction, a lower mold that is movable in the horizontal direction and supports a workpiece with attached burrs, etc.
A chute provided on the lower die below the burrs, etc. of the workpiece supported by the lower die, and a chute attached to the upper die, trim the burrs, etc. of the workpiece supported by the lower die by lowering the upper die, and remove the workpiece after trimming. This burr trimming press consists of a clamping mechanism that holds the workpiece in the upper mold, and a mechanism that ejects the work clamped to the upper mold from the upper mold.