JP2514809B2 - Horizontal automatic trimming press machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a punching press, which is a cast product, mainly a die-cast product runner and a mold extrusion overflow punching machine.

(B) Conventional Technology Die-cast products generally include a product part and a runner integrally connected to the product part. The die-cast product was punched by a press machine to manufacture the product.
The runner is for supporting the product part of the die cast product when punching with a press, and when punching with a press,
It is separated from the product and removed as an unnecessary part. The runner is clamped by the clamp member when punching,
The place where the runner is clamped is called a stamp. An overflow (burrs protruding to the outside when molding) is generally formed on the outer surface of the product part of a die-cast product, but when punching with a press, the overflow is also separated from the product and becomes an unnecessary part. Removed.
However, in conventional runner punching work using a vertical press machine, it is not possible to automatically sort out punched products and unnecessary parts such as runners during work. A method for automatically selecting and extracting products and runners by punching the runners by placing robots between the molds by a robot has also come to be used.

(C) Problems to be solved by the invention As described above, the horizontal trimming press machine is capable of automatically separating and taking out the product of the press product and the accessory removing part such as the runner part in the press stroke, but the press die (female・ The male type) and the pressed product must be held vertically, so a female mounted vertically on the press
It is very difficult to accurately hold the press product carried by the robot between the male molds with respect to the press mold.
Also, during the pressing process, the pressed product causes a slight swaying motion due to the weight of the runner and the stamp at its tip, lacking verticality. Therefore, there is a defect that the press die fitting surface (product side surface) of the product after press molding is flawed.

The present invention, in order to never cause the above-mentioned flaws on the side surface of the product, also makes it possible to hold the press product carried in by the robot very easily and accurately in parallel (perpendicular) to the press die.

(D) Means for solving the problem The male die operation of the press punching is performed by pressing (large pressing force), and the product is pressed from its rear surface by a pressure smaller than hydraulic pressure during the punching process. Also, press products carried in by the robot should be pressed and sandwiched on both sides of the stamp, and the female mounting plate is provided with runner positioning taper pins, or the male product with the positioning pin of the press product is An air cylinder for pushing out a product is provided behind the mounting plate, and a product extruding rod for extruding the product after punching by the cylinder is provided. Further, after punching the product, a stamp pressing member for clamping the above stamp on the female side and an overflow pressing rod for removing the overflow remaining on the upper surface of the female mold are provided on the sliding member that operates together with the operating member that operates the male mold. It is a thing.

(E) Example An example of a trimming press machine according to the present invention is shown in a side view in FIG. A base 3 is set on the upper part of the abutment 1 via four height adjusting bolts 2 and fixed to the upper surface of the base 4.
Two front and rear lower tie bars 5 are installed via one slide guide bush 4, and two fixing plates (a left side fixing plate 6 and a right side fixing plate 7) are provided on the left and right of the lower tie bar 5. The fixing plates 6 and 7 are also provided with front and rear two upper tie bars 8 on the upper part thereof, and are fixed by the four upper and lower tie bars 5. A movable plate 9 is slidably mounted on the tie bar 8, and a hollow male mounting box 10 is mounted on the front side of the movable plate 9 (hereinafter, the central side of the press is represented by the front side and the opposite side is represented by the rear side). The male mounting plate 11 is mounted on the front surface thereof, the male mounting base 12 is mounted on the front surface thereof, and the male mold A is mounted on the front surface thereof.

Oil cylinder on the back of the right fixed freight 7
20 is fixed, and its operating rod 21 has a right fixing plate 7
And the movable plate 9 is slid left and right. That is, the male die A is punched and returned by the oil pressure of the oil cylinder 20 (about 70 kg / cm ² at a large pressure).

The male mounting box 10 is provided with an extruding plate 22 through which the oil / cylinder operating rod 21 is freely inserted. The plate 22 is freely inserted through the movable plate 9 and attached to the four guide rods 23. Then, the end portion thereof is received by the fixed plate 7, and the spring 24 is wound between the fixed plate and the movable plate 9.
That is, the pushing plate 22 is elastically received by the fixed plate 7 without interruption, and the pushing plate 22 is fixed to the oil cylinder 20
If it is pressed by the operating rod 21 of, it is moved to the left. A plurality of overflow pressing rods 25 are provided on the front surface of the push-out plate 22. The rod 25 has a two-step structure with a thick base and a narrow tip, and this small diameter portion allows the male mounting plate 11 to freely move. A spring 26 between the back of the plate 11 and the thick base of the rod 25.
It has. That is, the pushing plate 22 is elastically received by the male mounting plate 11. An air cylinder 28 is attached to the front surface of the pushing plate 22 for moving the product pushing rod 27 (shown by dotted lines) from side to side.

A product pressing air cylinder 30 is fixed to the back surface of the left side fixing plate 6, a hollow female mounting box 31 is mounted on the opposite surface thereof, a female mounting plate 32 is mounted on the front surface thereof, and a female mold B is mounted on the front surface thereof. Is attached, and two runner positioning pins 33 are provided at the bottom of the female mold B. And a product holding rod which is projected and retracted by the sliding rod 34 in the air cylinder 30 in the box 31.
35 is installed. Then, the press product C is inserted by a robot between the male mold A and the female mold B (shown by a chain line). C is the product, C ₃ is a runner, and C ₄ is a stamp that is a part of the runner and is a sandwiched part.

A stamp pressing air cylinder 36 is fixed to the lower part of the oil cylinder 20 of the right side fixing plate 7, and a stun presser 37 which slides left and right by the air pressure of the air cylinder 36 is provided on the front surface of the oil cylinder 20. Movable plate that holds the stamp on the lower tie bar 5 (2)
40 is slidably attached, and an air cylinder 41 is fixed to the lower central portion of the left side fixed plate 6 so that the air pressure of the air cylinder 41 allows the movable plate 40 to slide left and right. Similarly, a stamp retainer 42 is made to project at a position facing the stamp retainer 37 on the upper part of the front surface of the. Further, an air cylinder 43 for a stamp pushing member is provided on the back surface of the movable plate 40, and a stamp pushing member 44 that moves left and right by the air pressure of the air cylinder 43 is provided on the front surface of the movable plate 40. The stamp pushing member 44 has a plate-like shape, and the stamp pressing member 42 has a vertical groove 45 (FIG. 2 described later) cut in the center of the surface thereof so that the stamp pushing member 44 is continuously accommodated in the groove 45. To be done.
A sectional view taken along line S-S in FIG. 1 is shown in FIG. 46 is a hydraulic pump 20
Is a hydraulic unit for.

(F) Action Since the automatic trimming press machine according to the present invention is configured as described above, the press product C is robotized by the female die B.
And the male die A to a predetermined position, and the stamping air cylinders 43 and 36 are operated (the female die cylinder 43 to the right and the male die cylinder 36 to the left) to stamp the stamped product C. Hold C ₄ from both sides with stamp holders 42 and 37.
The pressed product C is an example, and its front view is shown as shown in FIG. That is, the product is ring-shaped
In two-up of C ₁ · C _2, C ₄ stamp, C ₃ runner from the stamp, C ₅ is overflow.

Following the above, when the stamp holders 42 and 37 sandwich the stamp C ₄ , only the stamp holder air cylinder 36 is driven to move the pressed product C to the female die B surface. Then, the runner C ₃ of the press product C is inserted between the two runner positioning pins 33 provided on the female die mounting plate 32. Since the leading end of the pin 33 is tapered, the vertical position of the runner C ₃ is corrected as the pressed product C is inserted between the pins 33, and the pressed product C is correctly fitted to the surface of the female mold B. . Then, the product pressing air cylinder 30 is driven and the product pressing rod 35 moves forward to press the back surface of the product parts C ₁ and C ₂ of the pressed product C which is now in contact with the front surface of the female mold B. Then, the oil cylinder 20 is driven to punch the product with the male die A. When the product pressing rod 35 retracts, the product falls and is discharged from the product chute 47 (Fig. 2). At the same time, the Piltun of the oil cylinder 20 is retracted, the movable plate 9 is retracted, and the male mold A is retracted (to the original position in FIG. 1), and the stamp holding air cylinder.
The stamp retainer 37 is retracted by the 36 (to the original position in FIG. 1), the stamp pushing air cylinder 43 is driven, the stamp pushing member 44 is projected, and the stamp C ₄ and the runner C ₃ are dropped (the stamp retainer). Even if 37 moves backward, the weight of the stamp causes the runner C ₃ to ride on the stamp retainer 42 and not fall.) It is discharged from the runner chute 48 (Fig. 2). When the product is punched out by the male mold A, the overflow C ₅ is cut at the same time as the runner C _3, but the cut overflow C ₅ is on the upper part of the female mold B and on the lower part. Is the runner positioning pin above
In the case where the product remains on the 33, the pushing plate 22 is pushed by the movable plate 9 at the time of punching the product and is pushed down by the overflow pushing rod 25 to be discharged from the chute 48 together with the runner C ₃ . The winding spring 24 of the guide rod 23 and the overflow pressing rod
The winding spring 26 of 25 is a return spring of the pushing plate 22.

The product has a hole D on its surface as shown in Fig. 4 (D ₁ ).
_{In the} case of having ₂ (core removal hole at the time of die casting), use the hole D ₂ in the trimming press without using the runner positioning pin as described above for aligning with the female die of the press product as described above. If the male die is provided with a pin (taper bin) that matches the hole D ₂ , the press product can be positioned. The numeral 29 shown by the dotted line is this press product positioning pin. In this case, even if the product is punched out by a male mold and the product pressing rod 35 is retracted from the back surface of the product as described above, the product is supported by the pin and does not drop.
Immediately after punching the product with the male mold, the air cylinder 28 mounted on the front surface of the pushing plate 22 is driven to project the pushing rod 27 for dropping the product and drop the product.

(G) Effects of the Invention The horizontal automatic tremming press machine according to the present invention has the following effects because it has the above-described configuration and operation.

(1) When punching a die-cast press product, pressure (not too much pressure due to air pressure) is also applied to the back surface of the product, and the male die is punched with a large oil pressure.
The product does not tilt in the female mold only by the clearance between the female mold inner diameter and the product outer diameter, and therefore, it is possible to manufacture a clean product without problems such as scratching the side surface of the product.

(2) In the case of a vertical type press machine, the press product may be placed on the upper surface of the female die and pressed by the male die, but in the case of the horizontal type machine, it is extremely difficult to keep the press product on the female die surface by the robot. It is difficult and difficult to do, but by sandwiching the stamp of the stamped product carried in by the robot with the air cylinders from both sides, this work becomes very easy.

(3) As a means for accurately matching the surface of the product part of the pressed product held on both sides with the above stamp and the surface of the female mold, the female mold mounting plate is provided with two taper pins, and the female mold surface of the pressed product is provided. By passing the runner between the taper pins during the movement process to, it becomes easy to correct the inclination of the product and accurately match the product with the female mold.

(4) In the structure in which the stamp is held from both sides, the runner placed on the stamping material on the female die-cutting female die side is provided with a groove at the center of the member, and is an air cylinder to be housed in the groove. Providing a working stamping member facilitates automatic exclusion.

(5) A sliding member that is operated together with an operating rod of an oil cylinder for operating the female die in a configuration in which the stamp is held from both sides and a female die mounting plate for straightening the runner is provided with a taper pin. By providing the overflow pressing rod in the lower part of the above, it is possible to automatically and easily eliminate the overflow remaining on the taper pin after punching the product.

(6) In a structure in which the male die is provided with a projecting pin using the core hole of the pressed product to match the product with the female die, the male die is operated together with the operating rod of the oil cylinder. By providing the sliding member with an air cylinder for sliding the product extruding rod, the product after punching can be automatically excluded.

(7) By providing the overflow pressing rod on the upper part of the sliding member which is operated together with the operating rod of the oil cylinder for operating the male die, the overflow remaining on the upper portion of the female die after punching the product can be eliminated.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a horizontal automatic trimming press according to the present invention, FIG. 2 is a sectional view taken along line SS of FIG.
FIG. 4 is a front view of an example die cast product, and FIG. 4 is a front view showing another example of the die cast product. A …… Male type, B …… Female type, C …… Pressed product, C ₁・ C ₂ …… Product, C ₃ …… Runner, C ₄ …… Stamp, C ₅ …… Overflow, D ₁ …… Product , D ₂ ...... Core hole, 9 ...... Movable plate, 20
…… Oil cylinder, 21 …… Oil cylinder operating rod, 22 …… Extrusion plate, 23 …… Guide rod, 24
...... Return spring, 25 …… Overflow push rod,
26 …… Return spring, 27 …… Product push rod, 28 ……
Product pushing air cylinder, 30 …… Product holding air
Cylinder, 32 …… Female mounting plate, 33 …… Runner positioning taper pin, 36 …… Stamp holder air cylinder, 37 …… Stamp holder, 40 …… Stamp holder movable plate, 41 …… Stamp holder movable plate operation Air cylinder, 42 …… Stamp holder, 44 …… Stamp pushing member, 45 …… Vertical groove.

Claims (7)

(57) [Claims] 1. A horizontal automatic trimming press machine for punching a press product in a state where a runner and a product part are connected to each other by punching with a male die A and a female die B to separate the runner from the product. An oil cylinder for moving the male mold A is arranged in the air cylinder, and an air cylinder is arranged behind the female mold B so as to face the oil cylinder.
A product pressing means capable of contacting the product part of the press product is provided at the tip of the cylinder, and when the male die A is moved by the oil cylinder to punch the press product, the air cylinder is operated to operate the air cylinder. A horizontal automatic trimming press machine characterized in that the back surface of the product section is pressed by the product pressing means. 2. An oil cylinder for operating a male die A is provided with a sliding member on an operating rod thereof, and the sliding member is provided with an air cylinder for sliding a product extrusion lot. A horizontal automatic trimming press according to item 1. 3. An oil cylinder for operating a male die A is provided with a sliding member on an operating rod thereof, and an overflow pressing rod for removing an overflow remaining on an upper portion of the female die is provided on an upper portion of the sliding member. The horizontal automatic trimming press machine according to claim 1. 4. A pair of stamp pressers for holding a stamp at the bottom of the runner of the pressed product, and respective air cylinders for moving each stamp presser, and punching with a male die A and a female die B. The horizontal automatic trimming press machine according to claim 1, wherein the stamp at the bottom of the runner is clamped by a pair of stamp pressers before performing. 5. The horizontal automatic trimming press according to claim 4, wherein the female die B is fixed, and a taper pin for guiding a runner is provided at a lower portion of the female die B. 6. An operating rod of an oil cylinder for operating the male die A is provided with a sliding member, and the sliding member is provided with an overflow pressing rod for removing overflow remaining on the taper pin. The horizontal automatic trimming press machine according to claim 5. 7. A stamp extruder which is provided with a vertical groove in the central portion of a female-side stamp retainer for sandwiching a stamp of a stamped product from both sides thereof and which is fitted into the groove and slid by an operating rod of an air cylinder. The horizontal automatic trimming press machine according to claim 4, wherein a member is provided.