KR101781820B1 - Devices for trimming presses - Google Patents

Abstract

The present invention relates to a press machine for trimming, to process scrap of a molded product formed by a mold on a frame (F). According to the present invention, the press machine comprises: an upper die (10) guided to perform vertical motion by a main cylinder (11) and a rod (13); a lower die (20) including a plate (21) installed in the rod (13) to mount the molded product on an upper surface, a forming plate (23) to process a workpiece (P), a support pin (25) to support a bottom surface of the molding plate (23), and a mounting groove (27) to allow the molding plate (23) to be supported in a correct position; and a discharge means (30) including a lifting/lowering cylinder (31) performing forward and backward inclination motion by a rotary cylinder (37) to lift/lower the lower die (20) in order to discharge the scrap, a rotary bar (35) performing support to transfer a rotary force to the molding plate (23), and the rotary cylinder (37) connected to the rotary bar (35) to rotate the molding plate (23) of the lower die (20); and a withdrawal means (40) to collect and withdraw the scrap by a collection container (41). Accordingly, provided has an effect of reducing facility costs due to excellent use of space caused from a compact structure.

Description

{Devices for trimming presses}

More particularly, the present invention relates to a trimming press for cutting scraps remaining in a mold after cutting by using a trimming mold. The trimming press has a compact structure, And more particularly, to a press apparatus for trimming which improves productivity and reduces manufacturing costs by minimizing a defect rate and maintaining operation efficiency and promptness.

Castings and forgings are generally used throughout the industry, including automobiles and electronic products. For castings, we use die casting as well as rough products using foundry sand. When a molded product is molded by such a die casting, a primary molded product that is molded and demolded from the mold is provided with a runner, a gate, a sprue, an overflow ), Burrs, and the like, that is, scrap are inevitably attached together with the molded product.

Such scrap not only causes defects in the assembling and operation of the product, but also may cause injury to the user, so it is necessary to remove the scrap using a separate device. Traditionally, grinding has been introduced in the removal process, but trimming presses are suitable for mass production products. Trimming presses are used for forming and cutting products by attaching a die (mold) suitable for the application on the facility.

As prior art documents relating to such trimming presses, there are disclosed Korean Utility Model Publication No. 1992-0002894 (Prior Art 1), Korean Patent Registration No. 10-0845818 (Prior Art 2), Korean Patent Registration No. 10-0915310 (Prior Art 3), and the like.

In the prior art document 1, in addition to the space where the trimming process is performed in the trimming press, a separate space for removing scrap is required, so that the space utilization efficiency of the work space is lowered. Inevitably, a space for horizontally moving the lower mold must be ensured, And it is disadvantageous in that the structure and workability are poor.

In the prior art document 2, unlike the preceding document 1, the floor space of the trimming press in which the trimming process is performed is sufficient, while the main structure, that is, the pinion, which is the gear unit for rotating the lower table, As the pinion reaches the height of the rack, the lower table is rotated at the same time as the lower table is rotated. Therefore, there is a possibility that there is a possibility that the pinion is not correctly engaged in the process of fitting between the pinion and the rack. The efficiency and precision of the operation are deteriorated. Moreover, since the scrap is removed from the lower table and returned to the original position, the next operation is waited for, so that the operation time is long and the productivity is significantly lowered. have.

In the prior art document 3, as in the prior art document 2, the lower plate applies a load to the fixed block, and a strong load is applied to the pinion gear meshed with the rack gear to cause wear and breakage, Since the lower plate is in contact with the mold, the molds are not aligned and are damaged. In addition, the drive cylinder for moving the rack gear forward and backward projects to the post, and the hydraulic cylinder for the drive cylinder projects to the host. It exposes.

Korean Utility Model Publication No. 1992-0002894 "Trimming press ballast reversing device" (Publication date: 1992. 05. 08) Korean Registered Patent No. 10-0845818 entitled "Press Device" (registered on July 07, 2008) Korean Patent Registration No. 10-0915310 entitled "Lower plate structure of a trimming press and its rotation method" (registered on Aug. 27, 2009)

It is an object of the present invention to fundamentally improve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a compact structure of a device, And to provide a press apparatus for trimming which is capable of improving productivity and reducing manufacturing cost by maintaining operation efficiency and promptness as basis.

According to another aspect of the present invention, there is provided a trimming press for processing a scrap of a molded article formed by a mold on a frame, the trimming press comprising: an upper portion provided on the upper portion of the frame, die; A plate provided on a lower surface of the upper die, a plate provided on the rod so that a molded article is seated on an upper surface thereof, a molding plate for molding a workpiece on the plate, a support pin for supporting a bottom surface of the plate, A lower die having a seating groove so that the molding plate is supported at a correct position in correspondence with each other; A lifting cylinder installed on both sides of the lower die for lifting and lowering the lower die for lifting and lowering the scrap by tilting back and forth by a rotating cylinder, a rotating bar for supporting the lower die to transmit the forming plate rotational force, An evacuation means coupled to the bar and having a pivoting cylinder operative to rotate a forming plate of the lower die; And a carry-out means provided adjacent to a lower portion of the lower die and collecting and discharging scrap by a collecting container.

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The forming plate according to the present invention is characterized in that the scrap is dropped and discharged by performing a tilting motion at about 90 to 130 ° C in the forward and backward directions according to the operation of the pivoting cylinder.

It should be understood, however, that the terminology or words of the present specification and claims should not be construed in an ordinary sense or in a dictionary, and that the inventors shall not be limited to the concept of a term It should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be properly defined. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It is to be understood that equivalents and modifications are possible.

As described above, the trimming press apparatus according to the present invention has a compact structure and is excellent in space utilization, thereby reducing facility cost, and automating the process in mass production, And the efficiency and speed of operation are maintained based on the result of the improvement of productivity and manufacturing cost reduction.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a configuration diagram showing a main configuration of a trimming press apparatus according to the present invention in a front view. Fig.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a trimming press apparatus.
FIG. 3A and FIG. 3B are structural diagrams showing an operating state of a trimming press apparatus according to the present invention; FIG.

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

The present invention proposes a trimming press for processing a scrap of a molded article molded by a mold on a frame (F). In particular, the present invention relates to a trimming press apparatus for minimizing the defective rate due to scrap in mass production, thereby inducing smooth flow, and maintaining and managing efficiency based on efficiency as well as speed and accuracy, while maximizing space utilization with a compact structure will be.

According to the present invention, the upper die 10 installed to be positioned above the frame F is guided by the main cylinder 11 and the rod 13 to move up and down. The upper die 10 is installed to be positioned above the frame F as shown in Figs. 1 to 3, and operates up and down by the main cylinder 11. A hydraulic unit (not shown) for operating the main cylinder 11 is provided at the upper portion of the frame F to increase the space utilization and the upper die 10 is driven by the operation of the main cylinder 11, (13). That is, the molded product obtained through the casting or forging process is operated by the upper die 10 by the main cylinder 11 and the rod 13 to engage the lower die 20 to be described later to process the scrap of the molded product do.

According to the present invention, a lower die (20) installed below the upper die (10) seats a molded product on its upper surface. The lower die 20 is constructed such that the lower die 20 is located below the upper die 10, i.e., directly below the upper die 10 as shown in FIGS. 1 to 3, and the molded product is mounted on the upper surface. In addition, the lower die 20 is provided with a QDC unit for facilitating the exchange of the mold at the lower part. Such a QDC (Quick Dies Changer) unit is an exchange device for easily exchanging the mold. The upper and lower clamps and the die lifter A guide rail, qdc unit, is installed inside the press and is installed outside the press. The detailed structure of the lower die 20 will be described later in detail.

The lower die 20 comprises a plate 21 mounted on a rod 13, a molding plate 23 for molding the workpiece P on the plate 21, And a seating groove 27 for supporting the shaping plate 23 at an accurate position in correspondence with the lower portion of the support pin 25. The support plate 25 is provided with a support groove 25, The lower die 20 is constituted by a plate 21 and a forming plate 23 which is provided on the rod 13 and the forming plate 23 is located inside the plate 21, And interacts with the die 10 to process the scrap of the molded article. The plate 21 and the molding plate 23 are not connected to each other as shown in Fig. 1, but are interconnected by a connecting bracket and a shaft. The shaft connecting the plate 21 and the plate 23 is connected to the turn bar 35 of the cabbage unit 30 to rotate only the plate 23 from the plate 21, The detailed operation will be described later.

1 and 3B, the molding plate 23 is provided with the support pins 25 on the bottom surface thereof and mitigates the impact on the lower die 20 during scraping through the seating grooves 27 corresponding to the support pins 25, So that the plate 23 is stably supported.

According to the present invention, the discharge means (30) installed on both sides of the lower die (20) to move up and down by the lifting cylinder (31) is tilted back and forth by the rotating cylinder (37) to discharge the scrap. The discharge means 30 is installed on both sides of the lower die 20 as shown in Figs. 1 to 3 where the discharge means 30 is located at a position where it is not interfered by the upper die 10, which is vertically operated by the main cylinder 11 Install it. This discharging means 30 causes the upper die 10 and the lower die 20 to mesh with each other so that the scrap removed from the molded product falls to the lower die 20 and the lower die 20 is moved back and forth by the pivoting cylinder 37 And discharges it to the lower part. The detailed configuration will be described later in detail.

According to the detailed construction of the present invention, the discharging means 30 includes a lifting cylinder 31 for lifting and lowering the lower die 20, a rotation bar (not shown) for supporting the molding die 23 of the lower die 20 to transmit rotational force And a pivoting cylinder 37 connected to the pivoting bar 35 and operated to rotate the forming plate 23 of the lower die 20. The discharging means 30 is composed of an elevating cylinder 31, a rotating bar 35 and a rotating cylinder 37 as shown in Fig. 3 to rotate the forming plate 23 of the lower die 20 to discharge the scrap downward. The elevating cylinder 31 functions to raise only the forming plate 23 from the plate 21 while being positioned on both sides of the forming plate 23 of the lower die 20. The pivoting bar 35 and the pivoting cylinder 37 respectively perform the function of rotating the forming plate 23 of the lower die 20 together with the rotational force. Accordingly, in order to discharge the scrap to the forming plate 23 of the lower die 20, only the forming plate 23 is lifted from the plate 21 by the operation of the lifting cylinder 31, The rotating force is transmitted to the rotating bar 35, and only the forming plate 23 is tilted forward and backward from the plate 21 to discharge the scrap removed from the molded product downward.

At this time, the molding plate 23 of the present invention is characterized in that the scrap is dropped and discharged by performing a tilting motion at about 90 to 130 ° C in the forward and backward directions according to the operation of the pivoting cylinder 37. The mold plate 23 is inclined in accordance with the above description of the operation, that is, the mold plate 23 is rotated together with the pivoting cylinder 37 and the pivot bar 35 together with the lifting operation of the lifting cylinder 31, Only the forming plate 23 is tilted forward and backward at about 90 to 130 DEG C by the operation of the plate 21 to discharge the scrap removed from the molded product to the lower portion.

According to the present invention, the carry-out means (40) provided adjacent to the lower portion of the lower die (20) collects and discharges scrap by the collecting cylinder (41). The take-out means 40 is installed in the lower portion of the lower die 20, that is, immediately below the lower die as shown in Fig. The collecting cylinder 41 is installed in the carrying-out means 40 directly below the lower die 20 and the collecting cylinder 41 collects and removes the scrap removed from the molded product by the tilting motion of the lower die 20 . On the other hand, the collecting cylinder 41 is not provided with the reference numerals, but a caster and a handle are provided at the bottom. Accordingly, the worker collects the scrap in the collecting container 41 and takes it out by using the handle as necessary.

3A and 3B, the upper die 10 is lowered along the rod 13 by the operation of the main cylinder 11 and the lower die 20 So that the scrap of the molded product is removed. 3b, the lower end of the plate 21 and the forming plate 23 are moved along the rod 13 by the lifting operation of the discharging means 30, that is, the lifting cylinder 31 . Then, by the operation of the pivoting cylinder 37, the rotational force is transmitted to the pivoting bar 35 so that only the forming plate 23 is tilted forward and backward from the plate 21 to discharge the scrap removed from the molded product downward.

At the same time, the lower die 20 reverses the above operation and the lower die 20 rotates and returns to the original state. At this time, the lower die 20, that is, the plate 21 and the molding plate 23 are stably stuck by the support pin 25 located on the bottom surface of the lower die 20 and the seating groove 27 of the frame F. [ . Then, the scrap removed from the molded product by the tilting motion of the lower die 20 is collected by the collecting cylinder 41, and the operator takes it out by using the handle of the collecting cylinder 41 as necessary.

Of course, the operation of the upper die 10 and the lower die 20, and the operation of the discharging means 30 and the carrying-out means 40 are progressively and progressively linked to form a series of steps Can be repeatedly performed.

As described above, the present invention provides a compact structure of the apparatus, which is excellent in space utilization, thereby reducing facility cost, and automating the process in mass production to minimize the defect rate due to the stabilization of the process, scrap, and the efficiency and promptness of operation Thereby improving productivity and reducing manufacturing cost.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. It is therefore intended that such variations and modifications fall within the scope of the appended claims.

10: upper die 11: main cylinder
13: load 20: lower die
21: plate 23: molded plate
25: support pin 27: seat groove
30: discharge means 31: lifting cylinder
35: Rotating bar 37: Rotating cylinder
40: Transporting means 41: Collecting passage
F: frame

Claims (4)

A trimming press for processing a scrap of a molded article formed by a mold on a frame (F) comprising:
An upper die 10 installed to be positioned above the frame F and guided to move up and down by the main cylinder 11 and the rod 13;
A plate 21 installed on the upper side of the upper die 10 and mounted on the rod 13 for seating a molded product on the upper surface thereof and a molding plate 23 for molding the processed product P on the plate 21 A support pin 25 for supporting the bottom surface of the molding plate 23 and a mounting groove 27 for supporting the molding plate 23 at the correct position in a manner equivalent to the lower portion of the support pin 25 A lower die 20;
Lifting cylinders 31 installed on both sides of the lower die 20 to move up and down by a lifting cylinder 31 and lifting and lowering the lower die 20 to tilt back and forth by the pivoting cylinder 37 to discharge scrap, A rotation bar 35 connected to the rotation bar 35 for supporting the molding die 23 of the lower die 20 to rotate, Discharge means (30) having a cylinder (37); And
(40) provided adjacent to a lower portion of the lower die (20) and collecting and discharging the scrap by the collecting cylinder (41). delete delete The method according to claim 1,
Wherein the shaping plate (23) performs a tilting motion in the forward and backward directions at about 90 to 130 DEG C in accordance with the operation of the pivoting cylinder (37) to drop and discharge the scrap.

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