JP3072394B2 - Runner hitting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a runner section for removing a runner section from a product section of an intermediate molded article after removing the intermediate molded article from a mold cavity by molding with a die casting machine at the time of casting. It relates to a hitting device.

[0002]

2. Description of the Related Art An intermediate molded product taken out of a mold cavity after being molded by a die casting machine at the time of casting is usually formed of a product portion and a runner portion connected to the product portion and corresponding to a path of a molten material. ing.

[0003] If the runner part is removed from this product part,
A product will be obtained, but conventionally, in this removal, first, the product portion is fixed so that the runner portion is cantilevered, and the runner portion is hit with a hammer, thereby connecting the runner portion to the product portion. This is done by breaking the part.

[0004]

By the way, in the conventional device, the product portion is fixed when the runner portion is removed. In this case, consideration is given to prevent the product from being damaged by the jig. Therefore, the fixing operation is complicated, and the removing operation of the runner portion is complicated.

[0005] For this reason, the runner portion is gripped by the runner portion removing device so as to bring the molded product into a cantilever state, and the runner portion is removed from the product portion by the operation of the runner portion hitting device. The runner part can be removed by a simple operation.

As described above, the runner portion hitting device can easily remove the runner portion from the molded product. However, in order to simplify the structure of the runner portion removing device itself, it is necessary to remove the molded product from the mold cavity. It is conceivable that the robot performing the work performs the work while holding the runner portion hitting device.

However, in this case, vibrations and hits due to the operation of the runner hitting device are transmitted to the robot, and the vibrations and impacts change the gripping position of the runner hitting device by the robot, causing the robot to move from the molded product. There are problems such as the inability to reliably remove the runner portion and a reduction in the impact efficiency.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a runner portion hitting device capable of reliably and efficiently removing a runner portion from a molded product.

[0009]

In order to solve the above-mentioned problems, the present invention relates to a method for removing a runner part of a molded product taken out of a molding part such as a mold cavity and held in a cantilever manner by a runner part removing device. A hitting device for hitting a runner portion, comprising: a cylinder slidably supporting a vibration rod for hitting the runner portion; and a grip portion gripped by a robot, wherein the grip portion is in a sliding direction of the vibration rod. The cylinder is connected to an end of the grip portion opposite to the contact surface via an elastic body.

The runner portion includes, for example, a gate in casting, and all that corresponds to a path of a molten metal from the gate to a product, and a stamp portion (resin pool) in resin molding. , And all that corresponds to the path of the molten resin from the stamp section to the product section. In addition, the runner part includes a part corresponding to a so-called air vent that prevents air from remaining in the mold when molten or molten resin is injected into the mold.

[0011]

According to the present invention, the cylinder comprises a cylinder slidably supporting a vibrating rod for hitting the runner and a gripper gripped by the robot, and the runner is hit by the operation of the vibrating rod. The grip portion is in contact with the positioning member via a contact surface provided so as to be orthogonal to the sliding direction of the sliding rod. Moreover, vibrations and impacts due to the operation of the sliding rod are transmitted to the grip portion via an elastic member interposed between the grip portion and the cylinder.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a front view of an apparatus for removing a runner portion of a molded article, FIG. 2 is a side view of the apparatus for removing a runner section of a molded article, and FIG.
4 is a front view of the gripping mechanism, FIG. 4 is a plan view of a block portion of the jack of the gripping mechanism, FIG. 5 is a front view of a part of the runner part hitting device, and FIG. FIG. 7 is a side view of a part of the runner portion hitting device, FIG. 8 is a plan view of FIG. 5, and FIG. 9 is a plan view of FIG.

In FIG. 1, reference numeral 1 denotes an intermediate molded product made of aluminum, which is taken out of a mold cavity of a die casting machine. This intermediate molded product 1
Is integrally formed with a product part 1a and a runner part 1b connected to the product part 1a, and the runner part 1b corresponds to a path of a molten aluminum material as a molten material in a mold. Further, a portion where the runner portion 1b of the molded product 1 is connected to the product portion 1a is a gate portion 1c having a small sectional area.

An apparatus for removing a runner part of a molded article is for removing a runner part 1b from a product part 1a of the molded article 1. The apparatus for removing a runner part is provided on a base 10 and on the base 10. And a holding mechanism 12 for holding the runner portion 1b so as to bring the molded product 1 into a cantilevered state. The molded article 1 is gripped in a cantilever state by the gripping mechanism 12 of the runner part removing device,
The runner portion 1b of the molded product 1 is
It hits with 3.

The gripping mechanism 12 of the runner removing device holds the runner 1b of the molded article 1 and presses it against the block 100 of the jack 14, and changes the gripping position by moving the block 100 of the jack 14. Drive means 32, a position detecting means 16 for detecting the position of the block 100 of the jack 14, an information input section 17 for inputting information on the molded article 1, and information from the information input section 17 and the position detecting means 16. And control means 18 for controlling the driving means 32 based on the position information.

The holding means 15 of the gripping mechanism 12 is
1 while the runner hitting device 13 is
The runner section hitting device 13 is movably provided with respect to the robot 1 and is held by a hand 21 provided on an arm 20 of a vertical articulated robot (hereinafter simply referred to as a robot) 19 which is electronically controlled, and is moved to a predetermined position. Be moved. The arm 20 of the robot 19 rotates around the support shaft 20a in the vertical direction on the paper as indicated by the arrow.

Therefore, when the information of the molded article 1 is inputted by the information input section 17, the position detecting means 16 outputs the jack 14
The drive means 32 is controlled by the control means 18 based on the information of the molded article 1 and the position information of the block 100 of the jack 14, and the jack 14 is controlled in accordance with the molded article 1.
Is moved vertically in FIG. 1 to adjust the gripping position of the molded article 1. Then, the runner portion 1b of the molded product 1 is set on the block 100 of the jack 14 whose grip position has been adjusted.
This is performed by gripping both sides 1b1 and 1b2 of b with the hand of the robot.

Holding means 1 for pressing the runner portion 1b
5 is fixed to the gantry 11 by a cylinder part 25, and a rod 26 is provided on the cylinder part 25 so as to be able to expand and contract in the vertical direction. At the lower end of the rod 26, a block 27 is provided.
Is pressed against the block 100 of the jack 14.

Then, the runner unit hitting device 13 is held by the robot 19, and the runner portion hitting device 13 is moved to a predetermined position corresponding to the runner portion 1b and hit.
The runner portion 1b and the heavy product portion 1a vibrate at different periods and the load caused by the impact concentrates on the gate portion 1c having a small cross-sectional area at the portion where the product portion 1a and the runner portion 1b are connected. The runner part 1b is easily removed from the product part 1a.

A sorting conveyor 22 is arranged at the center of the base 10 of the runner removing device, a bucket 23 is placed on one side of the sorting conveyor 22, and a transfer conveyor 24 is provided on the opposite side. I have. The product portion 1a from which the runner portion 1b has been removed falls onto the distribution conveyor 22, and the product portion 1a is moved onto the transport conveyor 24 by the operation of the distribution conveyor 22, and is transported. Thereafter, the runner portion 1b is dropped on the distribution conveyor 22, and the runner portion 1b is collected in the bucket 23 and melted again by the operation of the distribution conveyor 22.

The base 28 of the jack 14 has a screw shaft 2
9 and a guide shaft 30 are provided so as to be movable in the vertical direction, and a block plate 31 is provided at the upper end of the screw shaft 29 and the guide shaft 30. A block 100 is provided on the block plate 31. The runner portion 1b of the molded product 1 held by the block 100 in the block 27 of the holding means 15 is pressed and gripped by the block 100. This block 10
0 is provided with a projection 100a. When the projection 100a hits the runner 1b of the molded product 1, the runner 1b
The position of the runner portion 1b is regulated so that the runner portion 1b does not shift, and the removed runner portion 1b remains on the block 100 side.

Further, a peeling device 33 for peeling the runner portion 1b remaining on the block 100 side from the block 100 is attached to the block plate 31, and a cylinder portion 34 of the peeling device 33 is attached to the block plate 31 via a bracket 35. Installed. This cylinder part 3
In 4, a rod 36 is provided so as to be able to expand and contract in the direction of the block 100, and a contact portion 37 is provided at the tip of the rod 36. By extending the rod 36, the runner portion 1 b fixed to the projection 100 a of the block 100 is removed by the contact portion 37.

The runner portion 1b fixed to the projection 100a of the block 100 may be removed by the robot 19 instead of the peeling device 33. In this case, it is not necessary to provide the peeling device 33. The minute jack 14 can be reduced in size and weight.

The screw shaft 29 of the jack 14 has a screw 3
8 is connected to the output shaft 41 of a motor 40 via a coupling 39.
Is rotated in the forward and reverse directions to move the screw shaft 29 in the vertical direction. The screw shaft 29 moves in the vertical direction, whereby the position of the block 100 of the block plate 31 fixed to the screw shaft 29 changes. Sensor 42
The position detecting means 16 composed of the following detects the position of the guide shaft 30 and sends the position information to the control means 18.

The position detecting means 16 comprises a rotary sensor for detecting the rotation of the screw 38, and the rotary sensor detects the position of the screw shaft 29 from the rotation of the screw 38.
The position information may be sent to the control means 18.

Information input section 17 for inputting information on molded article 1
Is constituted by, for example, a keyboard, and the size of the molded product 1 is input to the information input unit 17 by key input of a standard number or the like of the molded product 1. The control means 18 is composed of, for example, a microcomputer, and the molded product 1 from the information input unit 17 is
The block 100 is automatically adjusted to a predetermined position in accordance with the molded article 1 by controlling the driving means 32 and rotating the motor 40 based on the position information from the position detecting means 16 and the position information from the position detecting means 16. The striking stroke of the partial striking device 13 can always be kept constant in an optimum state, and the striking efficiency can be improved.

Mounting plate 4 of runner hitting device 13
Numeral 3 is set on a temporary placing table 44 provided on the gantry 11 so as to be detachable by inserting the pin 201 into the attaching portion 200 of the attaching plate 43. A gripping plate 45 is mounted on the mounting plate 43 via a mounting shaft 53, and the hand 21 of the robot 19 enters into the groove of the gripping plate 45 and is gripped. A support plate 47 is slidably inserted through the mounting shaft 53, and a pneumatic vibrator 48 is supported on the support plate 47. The vibrator 48 is composed of a cylinder 49 and a vibrating rod 50. The axis of the cylinder 49 extends vertically and is attached to a support plate 47. The vibrating rod 50 slides downward from the lower end of the cylinder 49. It protrudes freely and vibrates up and down by the supply of pressurized air to the cylinder 49.

At the center of the cylinder 49, a block 51 is fixedly provided.
7 are connected by bolts 52, which are loosely inserted into the gripping plate 45. The lower end of the mounting shaft 53 is mounted on this gripping plate 45 with bolts 54, and the mounting shaft 5
The upper end of 3 is mounted on the mounting plate 43 with bolts 55. A slide cylinder 56 is provided on the mounting shaft 53, a support plate 47 is fixed to the slide cylinder 56, and a spring 57 is interposed between the slide cylinder 56 and the gripping plate 45. The cylinder 56 is constantly urged upward. A mounting bolt 58 is provided between the support plate 47 and the mounting plate 43, and a rubber damper 59 is inserted through the mounting bolt 58.
Between the mounting plate 43 and the mounting plate 43
The transmission of the vibration of the vibrator 48 to the third side is reduced.

As described above, the runner section hitting device 13 includes the cylinder 49 slidably supporting the vibrating rod 50 for hitting the runner section 1b and the holding section 300 held by the robot 19. Mounting plate 4
3, gripping plate 45, mounting shaft 53, bolts 54, 55
And so on. The grip portion 300 has a contact surface 43a that is perpendicular to the sliding direction of the vibration rod 50 and abuts on the gantry 11 of the runner removing device. The contact surface 43a is formed by the mounting plate 43. Further, a cylinder 49 is connected to an end on the opposite side of the contact surface 43a of the grip portion 300 via a spring 57 constituting an elastic body. In this embodiment, the gantry 11 of the runner part removing device constitutes a positioning member.
3a may be contacted.

Therefore, when the robot 19 is used to hold the runner section hitting device 13 set on the temporary placing table 44 and work, the hand 21 of the robot 19 holds the holding plate 45.
, And the mounting portion 200 of the mounting plate 43 is detached from the pin 201 fixed to the temporary placing table 44. Then, in a state in which the grip plate 45 is gripped by the hand 21 of the robot 19, the positions in the left, right, front and rear directions in FIG. 1 are determined, and then the contact surface 43a of the grip portion 300 is brought into contact with the gantry 11 to position in the vertical direction. Work.

At this time, the gripper 300 gripped by the robot 19 is brought into contact with the gantry 11 of the runner removing device via a contact surface 43a provided so as to be orthogonal to the sliding direction of the sliding rod 50. In addition, vibration and impact due to the operation of the sliding rod 50 are transmitted to the grip portion 300 via a spring 57 which is an elastic member interposed between the grip portion 300 and the cylinder 49. It is possible to prevent a change in the gripping position of the runner portion hitting device, and to reliably and efficiently remove the runner portion 1b from the molded product 1.

A support plate 60 is loosely inserted below the cylinder 49 of the vibrator 48. The support plate 60 and the block 51 are connected by a connecting shaft 61 and bolts 62. Further, the vibrating rod 50 of the vibrator 48
The connecting plate 63 is loosely inserted in the connecting plate 6.
The lower end of the guide shaft 64 is attached to 3 by a bolt 65.

A slide cylinder 66 is fixed to the support plate 60, and the slide cylinder 66 is slidably provided on the guide shaft 64. An air cylinder 67 whose upper end is fixed to the block 51 is attached to the support plate 60 with bolts 68. Reference numeral 69 denotes an air inlet with a speed control.

A cap plate 71 is connected to the connection plate 63 by a connection shaft 72.
The connection plate 63 and the cap plate 71 are always urged in a direction to be separated by the spring 73 supported by the second member 2. In addition, instead of the spring 73, a vibration isolating rubber or the like can be used.

A cap 74 is detachably screwed to the cap plate 71 with bolts 75, and the cap 74 projects downward. The front end of the vibration rod 50 is removably fitted into the cap 74, and a noise absorbing spacer 76 is interposed between the cap 74 and the front end of the vibration rod 50.

Accordingly, if the gripper plate 45 of the vibrator 48 is gripped and moved to a predetermined position by the hand 21 of the robot 19 and the rod of the air cylinder 67 is extended, the front end of the cap 74 moves to the runner portion 1b. The state is brought into pressure contact, and the starting position of the vibrator 48 is set. The starting position of the vibrator 48 is set in this way to improve the startability of the vibrator 48. When the vibrator 48 is driven in this state, the vibration of the vibrating rod 50 is transferred to the cap via the spacer 76. The vibration of the cap 74 is applied to the runner portion 1b with which the cap 74 is pressed, and the runner portion 1b is hit.

In this case, since the vibration of the vibrating rod 50 is applied to the cap 74 via the spacer 76, the vibration sound is suppressed lower than the vibration rod 50 directly hits the runner portion 1b, thereby preventing noise. Can be Also, the cap 74 is worn by the impact,
Can be easily replaced with another new one.

The gripping plate 45 of the vibrator 48 is gripped by the robot 19, and the reaction force when the vibrator 48 hits the runner 1b is generated by the vibrator 48.
Is transmitted to the slide cylinder 56 via the support plate 47 attached to the cylinder 49 of the slide cylinder 56.
Is supported by the slide shaft 53 via the spring 57, and is not transmitted to the grip plate 45.

Further, the runner section 1b is
The reaction force when hitting the
9, the rubber damper 59 is interposed between the support plate 47 and the mounting plate 43, so that the reaction force when hitting is transmitted from the mounting plate 43 to the base. It is not transmitted to the gantry 11 side provided on 10.

[0040]

As described above, the present invention comprises a cylinder for slidably supporting a vibration rod for hitting a runner portion by a runner portion hitting device, and a holding portion for holding by a robot. The robot has a contact surface which is perpendicular to the sliding direction of the vibrating rod and which comes into contact with the positioning member. The gripping part is abutted against the positioning member via a contact surface provided so as to be orthogonal to the sliding direction of the sliding rod, and the gripping part is interposed between the gripping part and the cylinder. Vibration and impact due to the operation of the sliding rod are transmitted through the elastic member, which prevents the robot from changing the gripping position of the runner hitting device, and ensures that the runner is reliably and efficiently formed from the molded product. Can be removed

[Brief description of the drawings]

FIG. 1 is a front view of an apparatus for removing a runner portion of a molded product.

FIG. 2 is a side view of the apparatus for removing a runner portion of a molded product.

FIG. 3 is a front view of a gripping mechanism.

FIG. 4 is a plan view of a block portion of a jack of the gripping mechanism.

FIG. 5 is a front view in which a part of the runner portion hitting device is broken.

FIG. 6 is a side view in which a part of the runner portion hitting device is broken.

FIG. 7 is a side view of a part of the runner portion hitting device.

FIG. 8 is a plan view of FIG. 5;

FIG. 9 is a plan view of FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Molded product 1a Product part 1b Runner part 11 Stand 12 Gripping mechanism 13 Runner part hitting device 14 Jack 15 Holding means 19 Robot 21 Hand 43 Mounting plate 43a Contact surface 49 Cylinder 50 Vibration rod 57 Spring 300 Gripping part

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-60-72661 (JP, A) JP-A-50-154353 (JP, A) JP-A-4-81260 (JP, A) JP-A-3- 467 (JP, A) JP-A-59-209471 (JP, A) JP-A-3-133561 (JP, A) JP-A-4-356345 (JP, A) JP-A-62-81262 (JP, A) Shokai Sho 61-77159 (JP, U) Shokai Hei 5-5263 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B22D 31/00 B29C 37/02

Claims (1)

(57) [Claims] 1. A runner portion hitting device for hitting a runner portion of a molded product taken out of a molding portion such as a mold cavity and held in a cantilever shape by a runner portion removing device,
The robot comprises a cylinder that slidably supports a vibrating rod that strikes the runner portion, and a grip portion that is gripped by a robot. The grip portion is orthogonal to the sliding direction of the vibrating rod and abuts against a positioning member. A runner part hitting device, having a contact surface, wherein a cylinder is connected via an elastic body to an end of the grip portion opposite to the contact surface.