JPH07106442B2 - Clamp position remote adjustment device for automatic unloader for die casting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to an improvement of a clamp position remote adjusting device for an automatic unloader for a die casting machine.
In order to securely grip the die-cast product in the mold, the position of the automatic unloader clamp to be advanced in parallel with the mold parting surface between the molds opened, and the mold of the cast product The present invention relates to a device that enables remote adjustment of how much the drawing stroke should be performed, etc., from the operator position on the front surface of the die casting machine, depending on the depth of penetration into the mold.

[Conventional technology]

The unloader (B) is often installed on the counter operation side of the die casting machine (A) (that is, the position opposite to the position where the control panel is thrown) because of the machine layout. Turn the manual operation handle (31) (31 ') of the unloader (B) to adjust the position for advancing the clamp (1) and the withdrawal amount, then return to the operating side and manually remove the unloader (B). )
Operate to check if it matches the actual condition of the mold.
To correct for misalignment, turn to the counter operation side again, turn the manual operation handles (31) (31 ') to readjust, return to the operation side, and perform the complicated work of checking with the manual operation described above. It had to be repeated, requiring a great deal of adjustment work time each time the mold was changed.

[Object of the Invention]

The present invention has been made in view of the actual state of the prior art described above, and an object thereof is to set a clamp of an automatic unloader according to the actual state of a mold by a setting device newly attached to an operation panel of a die casting machine. All adjustments are completed just by digitally inputting the entry position and withdrawal amount of
(EN) Provided is a clamp position remote adjusting device for an automatic unloader for a die casting machine.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention provides: the unloader frame (3) is arranged so as to move parallel to the moving direction of the moving die (16) of the die casting machine, and the die (15) ( The arm (2) that moves parallel to the parting surface of 16) is attached to the frame (3), and the clamp (1) for holding the die cast product is attached to the tip of the arm (2).

A set of screw shafts (7) and (7 ') is arranged parallel to the moving direction of the frame (3).

The screw shafts (7) and (7 ') are respectively screwed into stoppers (8) and (8') which are arranged on both sides of the frame (3) and which regulate the movement amount of the frame (3).
Stepping motors (6) and (6 ') for (7')
Rotate to change the position of stoppers (8) and (8 ').

On the operation panel (12) of the die casting machine (A), the clamp entry position (xmm) and the drawing stroke (y
mm) can be input and set, and the movement amount of each stopper (8) (8 ') corresponding to each set value is calculated, and the pulse number corresponding to each movement amount is calculated, and based on each obtained pulse number A stopper movement amount setting device (11) for controlling rotation of each stepping motor (6) (6 ') is provided. The technical configuration is adopted.

[Action]

In the automatic unloader (A) of the present invention having the above-mentioned structure, the operation of the evaporator becomes simple as follows.

New mold (15) (16) with die plate (13) (14)
Mounted on the automatic unloader (B) so that the biscuit part (17) of the cast product can be gripped almost at the center by manually casting.
Measure the distance x mm from the position where the clamp (1) should be inserted in parallel with the mold parting surface to the mold mounting surface of the fixed plate (13).

Next, by actually releasing the cast product, the drawing stroke y mm that allows continuous and reliable work is measured and determined.

The above measured values x and y mm are input to the stopper movement amount setting device (11) of the operation panel (12) on the front of the die casting machine (A) with a digital switch.

Then, the stepping motor (6) or (6 ') rotates accurately according to the input digital amount, and the stopper (8)
Alternatively, the position (8 ') is set accurately.

〔Example〕

The automatic unloader (B) has a frame structure in which the left and right side plates (10) (10 ') are fixed by four upper and lower frame guide bars (4) (4'). Further, one stopper guide bar (9) is also installed between the left and right side plates (10), (10 '), and the pair of left and right screw shafts (7), (7') is also provided on the side plate (10).
Each of them is rotatably fixed to (10 '). Electric motors (6) and (6 ') are connected to the screw shafts (7) and (7'). (A stepping motor is used in this embodiment.) The frame (3) is a frame guide bar (4).
The rod (5a) of the cylinder (5), which is slidably supported by (4 ') and is fixed to the right side plate (10'), can be slid left and right. Frame (3)
A pair of left and right stoppers (8) and (8 ') are arranged on both sides of the frame () to determine the left and right movement amount of the screw shafts (7) and (7'). ′)
Are respectively screwed to each other and slide along the guide bar (9). Electric motors (6) and (6 ') are attached to the screw shafts (7) and (7'), respectively.
Stopper (8) by rotating (7 ') respectively
(8 ') slides left and right along the stopper guide bar (9).

The arm (2) is adapted to enter in parallel to the parting surface of the molds (15) (16) retracted by the advancing / retracting device (not shown) mounted on the frame (3). In FIG. 1, the distance (b) from the left end of the frame (3) to the center line of the arm (2) is always constant. The width (c) of the frame (3) is also constant.

The clamp (1) is attached to the tip of the arm (2) via the clamp operating device (1a), and the clamp operating device (1a) allows the casting biscuit part (17) (that is, the sprue) at three points. The structure is such that it can be gripped, and the clamp actuator (1a) is mounted so as to be able to rotate 90 ° with respect to the arm (2). The fixed and movable plates (13) and (14) of the die casting machine (A) are equipped with a fixed mold (15) and a movable mold (16), respectively. Install the automatic unloader (B) so that the arm (2) of the machine (B) can move forward and backward in parallel with the parting surfaces of the molds (15) and (16). At this time, in this embodiment, the left side of the right side plate (10 ') of the automatic take-out machine (B) keeps a certain distance (a) with respect to the die mounting surface of the fixed plate (21) of the die casting machine (A). I'll let you do it.

In this embodiment, a stepping motor is used for the electric motors (6) and (6 '), and the step driving amount is set by the stopper movement amount setting device (11) of the operation panel (10) on the operation side of the die casting machine (A). It can be set digitally with. The stopper movement amount setting device (11) is for setting the clamp entry position (x) (11a) and for pulling out amount (y) (11b).
Therefore, according to the set values of x and y, a calculation such as a case described later is automatically performed to control the electric motors (6) and (6 ') in FIG.

The operation panel (12) is composed of a CPU, ROM, RAM and keyboard (KB), and the dimensions (a), (b), (c) and the electric motor (6) necessary for operating the automatic unloader (B). ) (6 ')
The basic pitch of is previously entered in the ROM. The operator will input (x) and (y) mm determined by the molds (14) and (15) attached to the keyboard (KB).

Then, with the clamp (1), the biscuit part (1
It grips almost the center of 7), but its position is determined by the dimension (x) based on the die mounting surface of the fixed plate (13) of the die casting machine (A). This (x) dimension is changed depending on the thickness of the molds (15) and (16), the dimension of the cast product, the thickness (z) of the biscuit part (17), and the like. The following is an example of a die-casting machine with a mold clamping force of 300 tons, and 350 to 4 considering various molds (15) (16).
It changes within the range of about 50 mm. The clamp (1) holds the biscuit part (17) of the cast product, and then withdraws, that is, enters the process of releasing the cast product from the moving mold (16). This withdrawal stroke (y) is also the cast product. It varies in the range of 50 to 200 mm depending on the depth of. Therefore, the approach position dimension (x) of the clamp (1) and the drawing stroke (y) must be adjusted every time the molds (15) and (16) are changed. In the present invention, the stoppers (8) and (8 ') are adjusted. The positions can be independently determined by operating the electric motors (6) and (6 ') from the operating side. That is, the new die (15) (16) is attached to the die casting machine (A), and the entry position x (mm) and the withdrawal stroke y of the automatic unloader (B) are attached.
When (mm) is digitally input from the operation side, the following calculation is performed in the operation panel (12) to transmit the step amount to the electric motors (6) and (6 ') to transmit the screw shaft (7) or (7). ′) Is rotated and the stopper (8) or (8 ′) is screwed / retrewed along the stopper guide (9) so that the position of the stopper (8) or (8 ′) can be determined with one touch from the operating side. I chose

If this point is explained in further detail, for example, the electric motors (6) (6 ')
Is a pulse motor that rotates once per 100 pulses, screw shaft (7)
Shall use a pitch of 2 mm per revolution.
Now, when a = 100 mm, b = 200 mm, c = 400 mm, the approach position x of the clamp (1) for a certain mold (15) (16) is x =
If you set digitally 400 mm and drawing stroke y = 100 mm, the contact surface (8a ') of the stopper (8') and the contact surface (8a) of the stopper (8) with reference to the mold mounting surface of the fixed plate (13). The positions l and m are calculated as follows.

l = x + b = 400 + 200 = 600 mm m = 1- (c + y) = x + b-c-y = (x-y) + (bc) = (400-100) + (200-400) = 300-200 = 100mm Therefore, the motor (6) has 100 pulses / 2 mm x 600 mm = 30,0
00 pulse is input, and the contact surface (8a ') of the stopper (8') is adjusted so as to be at a position separated by l from the mold mounting surface which is the reference surface. Similarly, 100 pulses / 2mm × 100mm = 5,000 pulses are input to the motor (6), and the contact surface (8a ′) of the stopper (8 ′) is m from the mold mounting surface that is the reference surface.
Are adjusted so that they are only apart. In this way, the positions of the stoppers (8) and (8 ') are accurately adjusted from the operating side, and then the normal die casting work is started. The arm (2) will rotate 90 ° along the cam (18) of the die casting machine, but it will move almost parallel to the parting surfaces of the molds (15) and (16). Become.

〔The invention's effect〕

According to the present invention, as described above, the frame of the unloader is arranged so as to move substantially parallel to the moving direction of the moving mold, and the arm that moves together with the frame substantially parallel to the parting surface of the mold is mounted on the frame. Attach the clamp for holding the die cast product to the tip of the arm, set one set of screw shafts almost parallel to the moving direction of the frame, and arrange them on both sides of the frame. Since the screw shafts are respectively screwed into the stoppers that regulate the movement, and the stopper movement amount setting device that controls the movement amount of the stoppers is provided on the operation panel of the die casting machine, the position where the clamp of the automatic unloader is inserted between the molds. And, by only digitally setting the withdrawal amount of the cast product from the mold on the operation panel, the other is automatically calculated in the operation panel, and the correct position of the stopper is calculated, resulting in a counter operation It is possible to adjust the stopper position from the operating side of the die casting machine without the operator having to go to the automatic unloader position and adjust the automatic unloader adjustment work when a new mold is attached to the die casting machine. Has the advantage of being very efficient.

[Brief description of drawings]

1 is a plan view of a clamp position remote adjusting device for an automatic unloader of the present invention. FIG. 2 is a block diagram of a control device for explaining the operation of the present invention. FIG. 3 is a plan view of a conventional unloader. Fig.4: Front view showing the removal state of the cast product (A) …… Die casting machine, (B) …… Automatic removal machine (1) …… Clamp, (1a) …… Clamp actuating device, (2) …… Arm , (3) …… frame, (4) (4 ′) …… frame guide bar, (5) …… cylinder, (5a) …… rod, (6) (6 ′) …… motor, (7) (7 ')-Screw shaft (8) (8')-Stopper, (9) -Stopper guide bar, (10) (10 ')-Side plate, (11) -Stopper movement amount setting device (12) …… Operation panel, (13) …… Fixed side die plate (14) …… Movement side die plate, (15) …… Fixed mold, (1 6) …… Movable die, (17) …… Biscuit part of casting (18) …… Cam

Claims (1)

[Claims] 1. A frame is arranged so as to move in parallel to a moving direction of a moving die, an arm moving in parallel to a parting surface of the die is attached to the frame, and a die-cast casting is performed at a tip of the arm. Attach a clamp for gripping the product, arrange one set of screw shafts parallel to the moving direction of the frame, and screw the screw shafts to the stoppers that are arranged on both sides of the frame and that regulate the moving amount of the frame. Then, each screw shaft is rotated by a stepping motor, the entry position of the clamp with respect to the mold and the withdrawal stroke can be input and set on the operation panel of the die casting machine, and the movement amount of each stopper corresponding to each set value can be calculated. A stopper movement amount setting device for calculating the number of pulses corresponding to each movement amount and controlling the rotation of each stepping motor based on the obtained number of pulses is provided. Clamp position remote adjustment device for the automatic take-out machine for die casting machines.