KR102023435B1 - Die-casting automation machine - Google Patents

Abstract

The present invention relates to an automatic die casting apparatus, characterized in that, a molding unit having a molding machine for pressing a molten metal into a mold to produce a casting, and a cooler for cooling the casting; A trimming unit having a trimmer for cutting unnecessary portions of a cast product at a downstream end of the molding unit, and a melting furnace for discharging and cutting the cut portions; A deburring unit having a fixed robot for holding a cast product at a downstream end of the trimming unit, and a deburring robot for trimming the cast product; A transfer unit having a loading robot for entering and entering a cast between the molding unit and the trimming unit, and a transfer conveyor for transferring the cast to the deburring unit; And a discharge unit including a tester for photographing the cast product at a downstream end of the deburring unit to determine a failure, and an ejector for selectively transferring the cast product and stacking the cast product on a tray.
Accordingly, the present invention has the effect of reducing the overall work maneuver to automatically handle the scrap discharge operation occurs after trimming with a deburring structure that can respond to a variety of castings.

Description

 Die-casting automation machine

The present invention relates to a die-casting automation device, and more particularly, to a die-casting automation device capable of unmanned processing by automatically processing the entire process from molding, cooling, and transport to trimming, deburring, and inspection.

Typically, a workpiece such as an engine or a transmission that requires precision machining is formed by die casting casting. For example, the oil pump of the automatic transmission is mounted between the torque converter and the transmission housing, and the oil pump receives the engine output through the torque converter, sucks oil accumulated in the oil pan, and flows the oil to the transmission unit to shift the gear. It is responsible for the generation of pressure, lubrication of the transmission, and cooling.

That is, in the transmission, the oil pump supplies the operating oil pressure of the torque converter and the hydraulic control mechanism, and supplies the lubricating oil pressure to the friction parts such as the planetary gear set, the input shaft, and the friction elements of each shift stage. It is an indispensable part, and in particular, the oil passage for sucking and discharging oil is a component that requires a great deal of precision for the smooth supply of oil.

In addition, the valve body, which is a perforated part of a plurality of oil passages mounted on an automobile engine and a transmission's transmission, is a passage that accurately transmits the position of a gear, not simply an oil passage, and provides hydraulic pressure to each hydraulically operated friction element. A flow path is formed, an orifice through which hydraulic pressure is discharged after the operation of the hydraulically operated friction element is formed, and a plurality of hydraulic control valves for opening and closing the respective flow paths are installed.

The valve body should smoothly transmit the hydraulic pressure of various clutches by opening and closing by the valve body solenoid controlled by the computer.In this case, when the valve body does not play a normal role, shocks or slips occur during shifting, which greatly affects fuel efficiency. Get mad.

Looking at the manufacturing process of such an oil pump or valve body, it is necessary to perform the trimming, deburring, and inspection process following the molding and cooling of the casting. In other words, in the past, by performing such a process manually, there was a problem in that the overall rate of waste and the defect rate were increased.

Recently, as a way to solve this problem, Korean Patent Publication No. 10-2009-0050611 (Invention: Automated apparatus for casting process and control method for valve body) and Korean Patent Publication No. 10-1188816 ( Name of the invention: oil pump cover automatic manufacturing apparatus for automatic transmission). The proposed literature differs slightly depending on the casting, but it is possible to automatically perform a series of whole processes for manufacturing valve body or pump cover.

However, as the units performing each process are limited to a specific product, they cannot cope with various kinds of castings, and there is a problem that additional work is still dependent on manual work in addition to the process. That is, in the case of the deburring unit, it cannot be replaced with a tool that can cope with the shape of the casting, and in the case of the trimming unit, there is a problem of wasting the overall labor by discharging the remaining parts (scraps) manually.

Republic of Korea Patent Application Publication No. 10-2009-0050611 (Invention: Automated apparatus for casting process for valve body and its control method) Republic of Korea Patent Publication No. 10-1188816 (Name of the invention: automatic manufacturing apparatus for oil pump cover for automatic transmission)

Accordingly, the present invention is to fundamentally solve the conventional problems as described above, as well as to automatically handle the entire process from the molding, cooling and transfer of the casting to trimming, deburring, inspection, as well as various It is an object of the present invention to provide a die-casting automation device that can automatically handle scrap ejection after trimming along with deburring to cope with castings.

In order to achieve the above object, the present invention provides a die casting automation device comprising: a molding unit including a molding machine for pressing a molten metal into a mold to manufacture a casting, and a cooler for cooling the casting; A trimming unit having a trimmer for cutting unnecessary portions of a cast product at a downstream end of the molding unit, and a melting furnace for discharging and cutting the cut portions; A deburring unit having a fixed robot for holding a cast product at a downstream end of the trimming unit, and a deburring robot for trimming the cast product; A transfer unit having a loading robot for entering and entering a cast between the molding unit and the trimming unit, and a transfer conveyor for transferring the cast to the deburring unit; And a discharge unit including a tester for photographing the cast product at a downstream end of the deburring unit and determining a defect, and a discharge unit for selectively transferring the cast product and stacking the cast product on a tray.

At this time, the molding unit according to the invention is characterized in that it further comprises a safety door for automatically opening and closing the molding machine.

In addition, the trimmer according to the present invention is composed of a fixed die for moving the left and right along the rail to fix the casting on the main body, and a flow die to move up and down to the fixed die so that the gate and the overflow of the casting is cut, It is characterized by consisting of a rotary motor for dropping the cutting portion by tilting the fixed die on the right side of the main body, and a chute for discharging the falling cutting portion to the outside.

In addition, the fixed robot and the deburring robot according to the present invention is composed of a clamp for holding the casting on one end of the arm, and a spindle for finishing the casting, respectively, the spindle is linked to a tool post for receiving a plurality of tools in the casting It is characterized in that the chucking stand is configured to be automatically fixed to the corresponding tool to be replaced.

In addition, the tool post according to the present invention is formed with a support plate for mounting so that the bag of the tool is exposed, the hub for receiving the chucking stand protrudes on the upper end of the support plate, the chucking stand is an adapter that the tool is inserted into the output shaft of the spindle It is mounted, the nut is fastened to the outer surface of the adapter is coupled to the restraint, characterized in that the inner surface of the adapter has a collet that is raised and lowered in accordance with the fastening of the nut.

In addition, the die casting automation apparatus according to the present invention is characterized in that it further comprises a reversing unit consisting of a reverse robot and a reverse jig for reversing the casting between the deburring unit and the transfer unit.

On the other hand, the terms or words used in the present specification and claims are not to be construed as limiting the ordinary or dictionary meanings, the inventors should use the concept of the term in order to explain the invention in the best way. It should be interpreted as meanings and concepts corresponding to 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 configuration shown in the drawings are only the most preferred embodiments of the present invention, and do not represent all of the technical ideas of the present invention, and various alternatives may be substituted at the time of the present application. It should be understood that there may be equivalents and variations.

As described in the above configuration and operation, the present invention not only makes it possible to automatically process the entire process from forming, cooling, and transporting of the casting to trimming, deburring, and inspection, but also deburring that can cope with various castings. In addition, it can automatically handle the scrap discharge after trimming, thereby reducing the overall manpower.

1 is a plan view showing an automation device according to the present invention.
2 is a front view showing the automation device according to the present invention.
3 is a plan view showing a forming unit of the apparatus according to the invention.
4 is a plan view showing a trimming unit of the device according to the invention.
5 is a front view showing a trimming unit of the apparatus according to the present invention.
Figure 6 is a front view showing the main part of the trimming unit of the device according to the invention.
7 is a plan view of the deburring unit of the device according to the invention.
8 to 11 is a configuration diagram showing the main part of the deburring unit according to FIG.
12 is a plan view showing a transfer unit of the apparatus according to the present invention.
13 is a front view showing the reversing unit of the device according to the invention.

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

The present invention relates to an automated apparatus for die casting to automatically manufacture a casting, as shown in Figures 1 and 2, forming unit 10, trimming unit 20, deburring unit 30, transfer unit 40, discharge unit ( It is a die-casting automation device whose main configuration is 50).

The automatic device of the present invention is to be able to automatically handle the scrap discharge operation occurs after trimming with a deburring structure that can cope with various castings to reduce the overall labor of the work.

First, the molding unit 10 according to the present invention is a die casting facility for producing a cast as shown in Figs. The molding unit 10 includes a molding machine 11 for pressing a molten metal into a mold to manufacture a casting, and a cooler 12 for cooling the casting manufactured in front of the molding machine 11.

Here, the molding machine 11 is composed of a pair of fixed die and a movable die in close contact with each other, the cavity in which the molten metal is injected is formed on one surface facing each other. That is, when molten metal is injected into the cavity while the stationary die and the movable die are in close contact with each other, a cast product corresponding to the shape of the cavity is manufactured while the molten metal solidifies.

At this time, the molding unit 10 is preferably provided with a safety door 15 for automatically opening and closing the molding machine (11). The safety door 15 serves to prevent various accidents together with maintaining the temperature by sealing from the outside in the process of injecting molten metal in conjunction with the molding machine (11).

That is, when the casting is produced by the molding machine 11, the safety door 15 is opened, and then the transfer unit 40 enters the molding machine 11 to take out the casting. The cast product taken out is immersed in the cooler 12 and cooled.

Subsequently, the trimming unit 20 according to the present invention is a press equipment that is disposed at the downstream end of the molding unit 10 as shown in FIGS. 1 and 2 to cut the cast product. The trimming unit 20 is composed of a trimmer 21 for cutting unnecessary parts of the cast as shown in Figs. 4 and 5, and a melting furnace 25 for discharging and cutting the cut portion.

Trimmer 21 is a fixed die (21a) to move the left and right along the rail to fix the casting on the main body, as shown in Figure 6, the flow to move up and down to the fixed die (21a) to cut the gate and overflow of the casting It consists of the die 21b. Here, the right side of the main body is provided with a rotary motor 21c for tilting the fixed die 21a to drop the cut portion, and a chute 21d for discharging the cut portion to fall to the outside.

That is, when the casting is supplied to the fixed die 21a by the transfer unit 40, the fixed die 21a is moved to the left side facing the flow die 21b along the rail. Then, the flow die 21b descends to cut the gate, overflow, and the like, which are unnecessary portions. After cutting, the flow die 21b is raised to the original position, and the fixed die 21a is also moved to the right side which is the original position.

At this time, the fixed die 21a is tilted by the rotary motor 21c to drop the cut scraps to the bottom. The falling scrap is discharged along the chute 21d, and the discharged scrap is supplied to the melting furnace 25 along the conveyor. The scrap supplied to the melting furnace is melted and supplied to the above-mentioned molding machine 11 or discharged to the outside.

Subsequently, the deburring unit 30 according to the present invention is a finishing equipment disposed at a downstream end of the trimming unit 20 as shown in FIGS. 1 and 2 to remove burrs of the cast product. The deburring unit 30 is composed of a fixed robot 31 for holding the casting as shown in Figure 7, and a deburring robot 32 for trimming the casting.

The fixed robot 31 and the deburring robot 32 are composed of articulated arms of six or more axes, and are installed in the frame horizontally or downwardly. The fixed robot 31 and the deburring robot 32 are attached to one end of the arm a clamp 31a for holding the casting, and the spindle 32a for finishing the casting. The clamp 31a is attached to the fixed robot 31 by a forceps for holding the casting, and the spindle 32a is attached to the deburring robot 32 by a motor that rotates at a speed of finishing the casting.

That is, the fixed robot 31 grips the casting delivered by the transfer unit 40 with the clamp 31a, and the deburring robot 32 approaches the deburring position of the casting fixed to the clamp 31a and removes burrs. do. In this case, the fixed robot 31 is not stationary but moves in conjunction with the deburring robot 32. Therefore, the casting can be deburred regardless of various shapes, and the overall deburring speed can be improved.

At this time, the spindle 32a is interlocked with the tool stand 35 for receiving a plurality of tools (T) as shown in FIG. It is composed. The tool post 35 accommodates the tools T necessary for removing the burr in a predetermined pattern around the deburring robot 32 in a predetermined pattern, and is mounted at a position that does not interfere with the deburring. And the chucking table 36 is mounted on the output shaft of the spindle (32a) to rotate at the same time, once the bag of the tool (T) is inserted into the center to transmit the rotational force.

The tool post 35 has a support plate 35a on which the bag of the tool T is exposed to be exposed as shown in FIG. 9, and a hub 35b for receiving the chucking table 36 protrudes on the upper end of the support plate 35a. do. The support plate 35a serves to mount the tool T by forming a plurality of storage holes corresponding to the diameter of the tool T. And the hub (35b) is formed with a fixing groove (35c) engaging the chucking table 36 on the inner surface. That is, the hub 35b serves to restrain the tool T to be replaced while receiving the chucking table 36, which will be described again with the chucking table 36 to be described later.

The chucking table 36 is equipped with an adapter 36a, into which the tool T is inserted and inserted into the output shaft of the spindle 32a, as shown in FIG. 10, and a nut 36b that is engaged with and restrained by the hub 35b on the outer surface of the adapter 36a. Is fastened to the inner surface of the adapter (36a) has a structure in which the collet (36c) is raised and lowered in accordance with the fastening of the nut (36b).

The adapter 36a is an axis connecting the spindle 32a and the tool T. One side of the adapter 36a is formed with a coupling groove to which the output shaft of the spindle 32a is inserted, and the other side of the tool T is An inclined groove to be inserted is formed, and an outer surface is formed with a spiral for inducing fastening of the nut 36b.

The nut 36b is formed with a screw hole fastened to the helix of the adapter 36a, one side having a diameter corresponding to the outer diameter of the adapter 36a, and the other side having a diameter blocking the collet 36c embedded in the inclined groove. Is formed. Here, the fixing projection 36d is formed on the outer surface of the nut 36b to engage with the fixing groove 35c of the hub 35b.

The collet 36c is formed of a cone in which a hole having a diameter corresponding to the bag of the tool T is opened, and cut holes in various directions are formed so that the diameter of the hole is variable. The collet 36c is raised and lowered on the inclined groove in accordance with the fastening of the nut 36b, and the diameter thereof is varied according to the rising and lowering.

That is, when the nut 36b fastened to the adapter 36a is tightened, the collet 36c is lifted along the inclined groove to press and fix the tool T inserted in the center. On the contrary, when the nut 36b is loosened, the collet 36c descends along the inclined groove, and the pressure of the tool T is released.

The tool stand 35 and the chucking stand 36 having such a structure enable the automatic replacement of the tool T corresponding to the casting without the need to change the original structure of the spindle 32a. Durability can be secured.

Subsequently, the conveying unit 40 according to the present invention is a conveying device which is disposed between the molding unit 10 and the trimming unit 20 as shown in FIGS. 1 and 2. The transfer unit 40 is composed of a loading robot 41 for entering and entering the casting as shown in Figure 12, and the transfer conveyor 45 for transferring the casting to the deburring unit (30).

The loading robot 41 is composed of six or more articulated arms, such as the fixed robot 31 and the deburring robot 32, and is disposed between the molding machine 11 and the trimmer 21. The conveying conveyor 45 is composed of a plurality of rollers and a conveying motor, and is disposed between the loading robot 41 and the deburring unit 30.

That is, the loading robot 41 takes out the casting manufactured in the molding machine 11, soaks the extracted casting in the cooler 12, cools it, and then supplies it to the trimmer 21, and transfers the casting whose cutting process is completed. When seated at 45, the conveying conveyor 45 transfers the casting to the deburring unit 30.

Finally, the discharge unit 50 according to the present invention is the equipment that is disposed at the downstream end of the deburring unit 30, as shown in Figs. The discharge unit 50 is composed of a tester 51 for photographing the casting product to determine the failure, and an ejector 55 for selectively transporting the casting product to be loaded on the tray.

The inspector 51 is composed of a six-arm articulated arm or more like a fixed robot 31 and a deburring robot 32, and a camera for photographing a casting is attached to one end of the arm. That is, the camera photographs the cast product transported by the fixed robot 31, and analyzes the photographed image to determine appropriateness.

Discharger 55 is divided into a sorting conveyor for transporting the castings passed through the inspection machine 51, and a loader for loading the castings in a tray or pallet at the downstream end of the sorting conveyor. That is, the castings supplied to the sorting conveyor sort out the defective castings according to the inspector 51 in the process of transferring to the loader, and the transferred castings are sequentially loaded on the loader to prepare for shipment.

Meanwhile, the die casting automation apparatus according to the present invention further includes an inversion unit 60 disposed between the deburring unit 30 and the transfer unit 40 as shown in FIGS. 1 and 2 to invert the casting. Inverting unit 60 is composed of a reverse robot 61 and the reverse jig 65 for inverting the cast as shown in FIG.

Reverse robot 61 is composed of a six-arm or more articulated arm (arm), such as the fixed robot 31 and the deburring robot 32, is attached to the gripper for holding the casting on one end of the arm. And the reversing jig 65 mounts the cast on one end of the conveying conveyor 45, and rotates the cast as necessary to separate the foreign matter by centrifugal force.

That is, when the position of the burrs are on both sides according to the casting product, the inverting robot 61 receives the deburring casting product on one side by the deburring unit 30 and deburrs the other surface after seating on the inverting jig 65. The position is gripped and resupplied to the deburring unit 30.

Hereinafter, looking at the operation process to complete the casting by the die casting automation device according to the present invention.

First, the molding machine 11 manufactures a casting in a state where the safety door 15 is closed. When the production of the casting is completed, the safety door 15 is opened, and the loading robot 41 grips the casting and is taken out from the molding machine 11. Subsequently, the casting product taken out by the loading robot 41 is cooled by soaking in the cooler 12 for a predetermined time and then supplied to the trimmer 21.

The trimmer 21 then cuts off unnecessary parts of the casting and moves it to the original position to which the casting was supplied. And the loading robot 41 gripping the cast again, and then supplies to the conveying conveyor (45). Here, the trimmer 21 discharges the cut portion (scrap) to the outside, and the discharged cut portion is supplied to the melting furnace 25 and immediately melted.

Subsequently, the conveying conveyor 45 conveys the cast product to a position adjacent to the deburring unit 30. Then, the fixed robot 31 grips the casting, and then interlocks with the deburring robot 32 to remove the burr of the casting.

At this time, if the special shape or surface condition of the deburring part of the casting is different, immediately replace with a tool (T) suitable for the shape and condition. That is, in the state in which the spindle 32a is stopped, the deburring robot 32 places the tool T fixed to the spindle 32a on the tool stand 35 originally received as shown in FIG.

When the tool T is stored, as shown in FIG. 11, the fixing groove 35c of the hub 35b and the fixing protrusion 36d of the nut 36b are engaged with each other to constrain rotation. When the spindle 32a rotates in the counterclockwise direction several times in this state, the nut 36b fastened to the adapter 36a is released and the collet 36c is lowered along the inclined groove to release the pressure of the tool T. .

Subsequently, when the deburring robot 32 raises and lowers the spindle 32a, the deburring robot 32 leaves the tool T in a state where the tool T is stored. Then, the deburring robot 32 moves the spindle 32a to the tool T to be replaced to insert the bag into the inclined groove.

In the current position, the fixing groove 35c of the hub 35b and the fixing protrusion 36d of the nut 36b are similarly engaged with each other to restrict rotation. When the spindle 32a rotates in the clockwise direction several times in this state, the nut 36b fastened to the adapter 36a is tightened, and the collet 36c moves up and down along the inclined groove to press the tool T.

Subsequently, when the deburring robot 32 raises and lowers the spindle 32a, the replacement is completed with a tool T suitable for the shape and condition. And again interlocked with the fixed robot 31 to remove the burr of the casting.

On the other hand, if the position of the burrs on both sides according to the cast product, the reverse robot 61 receives the cast product deburred on one side from the fixed robot 31 is seated on the reverse jig (65). Then, the reverse robot 61 is changed to a position where the other surface can be deburred and gripped, and then supplied again to the fixed robot 31 to complete the deburring.

Subsequently, the fixed robot 31 supplies the cast product to the inspector 51, and the inspector 51 photographs the cast product to determine a defect. The casting is then transferred to the ejector 55 and the casting is sorted according to the determination, and then the selected normal casting is sequentially loaded on the tray and completed.

It is apparent to those skilled in the art that the present invention is not limited to the described embodiments, and that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or variations will have to belong to the claims of the present invention.

10: molding unit 11: molding machine
12: cooler 15: safety door
20: trimming unit 21: trimmer
21a: fixed die 21b: floating die
21c: rotary motor 21d: chute
25: melting furnace 30: deburring unit
31: fixed robot 31a: clamp
32: deburring robot 32a: spindle
35: tool post 35a: support plate
35b: hub 35c: retaining groove
36: chucking stand 36a: adapter
36b: nut 36c: collet
36d: fixed protrusion 40: transfer unit
41: loading robot 45: conveying conveyor
50: discharge unit 51: inspector
55: ejector 60: inversion unit
61: reverse robot 65: reverse jig

Claims (6)

In die casting automation equipment:
A molding unit including a molding machine to press-molten molten metal into a mold to produce a cast product, a safety door to automatically open and close the molding machine, and a cooler to cool the cast product;
A fixed die which moves the left and right along the rails while fixing the casting on the main body to cut unnecessary parts of the casting at the downstream end of the molding unit, and a flow die which moves up and down with the fixing die so that the gate and overflow of the casting are cut; A trimming unit having a rotary motor for tilting the fixed die to drop the cut portion, a trim having a chute for discharging the cut portion to the outside, and a melting furnace for discharging the cut portion;
A deburring unit having a fixed robot for holding a cast product at a downstream end of the trimming unit, and a deburring robot for trimming the cast product;
A transfer unit having a loading robot for entering and entering a cast between the molding unit and the trimming unit, and a transfer conveyor for transferring the cast to the deburring unit; And
And a discharge unit including a tester for photographing a cast product at a downstream end of the deburring unit to determine a defect, and a discharger for selectively transferring the cast product and stacking the cast product on a tray.
The fixed robot and the deburring robot are each provided with a clamp for holding a cast product at one end of the arm, and a spindle for finishing the cast product, and the spindle is automatically connected to a tool corresponding to the cast product in cooperation with a tool post for storing a plurality of tools. Equipped with a chucking stand to secure the exchange,
The tool post is formed with a support plate for mounting the bag of the tool exposed, a hub for receiving the chucking stand protrudes on the upper end of the support plate, the chucking stand is equipped with an adapter to insert the tool in the output shaft of the spindle, the adapter A nut is coupled to the hub on the outer surface is fastened, the die casting automation device, characterized in that the inner surface of the adapter is built up collet to rise and fall according to the fastening of the nut. delete delete delete delete The method of claim 1,
The die casting automation device further comprises a reversing unit consisting of a reverse robot and a reverse jig for reversing the casting between the deburring unit and the transfer unit.

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