JPS63264263A - Cold transfer device for castings - Google Patents

Abstract

PURPOSE:To smoothly perform the loading and unloading of castings to and from a hanger and to facilitate the automatization of operation by equipping a casting transfer means to a pallet to be moved at a transfer site. CONSTITUTION:First, the castings are positioned to the pallet 67 and then to the hanger 71 through the pallet 67. The transfer means 31 transfer the castings 1 smoothly on the pallet 67 having no obstacle on the circumference. Since the pallet 67 is transferred only in a straight line between a turntable and the hanger 71, a transfer truck 83 is moved smoothly by the operation of a cylinder device 84 equipped outside the hanger 71 without interfering with the hanger 71 to transfer the pallet 67 smoothly.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a cooling conveyance device for castings.

(Prior technology) Castings in a high temperature state after casting are placed on a cooling conveyor,
Cooling while transporting between work stations is useful when removing castings from molds, removing casting plan parts (runners, etc.), shot blasting, grinding weir marks, etc. in a continuous line. This is a commonly considered cooling method.

Furthermore, if a one-hanger type cooling conveyor is adopted, it becomes easier to dissipate heat downward from the casting.

On the other hand, as a means for supporting a casting on a hanger, the hanger is composed of a pair of opening/closing arms, and the opening/closing arm is lowered to open and close the casting placed on a table or the like. Generally, a method is adopted in which the casting is supported and raised by (11) and then fed (for example.

(See Japanese Patent Application Laid-Open No. 115362/1983).

(Problems to be Solved by the Invention) As mentioned above, when a one-hanger type is adopted as a cooling conveyor, it is conceivable to use a hanger with an open/close arm type when placing castings on this hanger. If all of the hangers are of the opening/closing arm type, there is a problem that the opening/closing mechanism and its driving means combine to complicate the structure of the hanger and make it expensive.

It is also conceivable to adopt a method in which the hanger is simply hung from a rail and the castings are placed on the hanger from the outside, but the casting part of the hanger has a hanger component (frame) above or on the left and right. It is usually enclosed and narrow, and the arm is held from the outside by clamping means and inserted into the casting rest of the hanger;
Another problem is that it is difficult to hold the casting in a fixed position or, conversely, to take it out from the hanger. The present invention is intended to solve these problems when using a one-hanger type conveyor for cooling castings.

(Means for Solving the Problems) A conveying device for cooling castings of the present invention includes a loading station for loading castings onto each hanger of a cooling conveyor, and an unloading station for taking out castings from each hanger, In a device that is cooled while being transported by a cooling conveyor, a pallet equipped with a receiving jig for placing the casting in a fixed position is removably installed in each of the above hangers, and the above-mentioned loading station or unloading station is installed. At least one side is provided with a transfer position for transferring the pallet, and a pallet transfer means for transferring the pallet between the transfer position and the hanger, and the pallet is transferred to the transfer position. The pallet is characterized by being provided with means for transferring castings.

(Function) In the case of the cooling conveyor for castings mentioned above, the castings are not placed directly on the hanger of the cooling conveyor, or conversely, they are taken out directly from the hanger, but the castings are placed or taken out via a pallet. . In other words, since the casting transfer means operates on the pallet that has been transferred to the transfer position outside the hanger, there is no problem of interference with other objects such as frame members, and the pallet transfer mechanism is Although a loading means is involved, the pallet can be transferred by a simple unidirectional movement, making it easy to avoid interference with the hanger itself.

(Effects of the Invention) Therefore, according to the present invention, a pallet transfer means for transferring a pallet between a hanger and a transfer position is provided at a loading or unloading station, and the pallet being moved to the transfer position Since a means for transferring the castings is provided, there is no interference with the hanger frame members, etc.
Castings can be placed on the hanger or taken out from the hanger smoothly, and the work can be easily automated.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows the overall structure of a casting 1.

This casting 1 is placed under a product part 2 as a cylinder block material of an engine, and a runner 3 is placed along the periphery of this product part 2.
are arranged in a substantially U-shape, and the sprue 4 extends from the center of the U-shape of the runner 3 and stands upright. Also,
The weirs 5 are provided at six locations around the periphery of the product section 2, and
A raised plate 6 is provided on the upper surface of the plate. Seats 7 and 8 for supporting the casting 1 are provided at four locations in total, including both ends and two corners of the runner 3.

FIGS. 2 and 3 show a line configuration from taking out the casting 1 cast in the frameless vertically split mold 10 to cooling and conveying it.

In the same figure, 21 is a mold conveyor that pours and conveys a series of vertically split molds 10, and this mold conveyor 21
Following the casting take-out station 22 at the conveyance end, stations 23 to 25 are provided in order for sprue folding, sand removal, and loading onto a conveyor 26 for cooling and conveyance. A frame 27 is provided extending from above the mold conveyor 21 to the cooling conveyor 26 at the take-out station, and the castings are placed on rails 28 on this frame 27.
A removal means 30 and a transfer means 31 for transferring the casting 1 from the sprue folding station 23 to the loading station 25 via the sand removal station 24 are provided so as to be able to reciprocate synchronously by a cylinder device 32.

In other words, the take-out means 30 and the transfer means 31 each have a trolley 35 on which rollers 33 and 34 are supported on the rails 28.
．． 36, and a rack portion of a rod 37 extending from the transfer means 31 is engaged with a pinion 39 rotated by a motor 38 of the take-out means 30. The a-rad 32a of the cylinder device 32 supported by the frame 27 via the bracket 40 in front of the transfer means 31 is connected to the cart 35 of the transfer means 30. As a result, the cylinder device 3
As the two rods 32a move back and forth, the take-out means 30 and the transfer means 31 move in synchronism, and the interval between the take-out means 30 and the transfer means 31 can be adjusted by rotation of the motor 38.

First, the take-out means 30 includes a lifting cylinder device 41 and a lifting platform 44 suspended from the trolley 35 so as to be able to rise and fall by means of guide rods 43 and 43 inserted into guide tubes 42 and 42, respectively. A pair of take-out arms 45 are supported on both sides of the lifting table 44 so as to be openable and closable in a direction along the split surface 11 of the mold 10 by an opening/closing cylinder device 47.

On the other hand, the transfer means 31 each have a cylinder device 1 for lifting/lowering.
252.53 and guide rods 56, 57 for centering with guide rollers 54, 55 for eight upper and lower needles.
The first and second lifting platforms 58.59 are supported so that they can be raised and lowered.
Equipped with. The first lifting table 58 has a pair of first clamp arms 61, 61 that open and close in a direction perpendicular to the opening and closing direction of the takeout arm 45, and the second lifting table 59 has a pair of first clamp arms 61, 61 that open and close in a direction perpendicular to the opening and closing direction of the takeout arm 45. A pair of second clamp arms 62, 62 which open and close in the direction are respectively supported by cylinder devices 63 and 64 for opening and closing so as to be openable and closable. In this case, one of the take-out arms 45 and the second clamp arms 62, 62 holds the seats 7, 7 at both ends of the runner 3, and the other holds the seats 8 at the corner of the runner 3. , 8, one of the first clamp arms 61, 61 receives the end seat 7 and corner seat 8 on one side of the runner 3, and the other one receives the end seat 7 on the other side. The corner catch seat 8 will be received.

At the sprue folding station 23, the casting 1 is placed on the catch plate 7 of the runner 3.
, 8 are provided, as well as means (not shown) for clamping the casting 1 and striking and breaking the sprue 4.

In the sand removal station 24, the casting 1 is also placed in the catch plate 7,
A roller-type movable receiver 66 66 is provided to receive the casting 1 at 8, and the rotation of the movable receiver 66 causes vibration to be applied to the casting 1 to cause the core sand to drop.

Further, the fixed receiver 65 and the movable receiver 66 both have upper portions that are inclined outwardly, and these inclined portions guide and support the seats 7 and 8 of the casting 1. In this case, the take-out arm 45 and the first and second clamp arms 61, 62 receive the outer parts of the seats 7, 8 in the longitudinal direction of the product, and the fixed receiver 65 and the movable receiver 66 receive the outer parts of the seats 7, 8 in the longitudinal direction of the product length. It is designed to receive the inner part.

The loading station 25 is a sand removal station 2.
4 side pallet transfer position 25a and a cooling conveyor 26 side loading position 25b. The pallet transfer position 25a is a position where the pallet 67 on which the castings 1 are placed in a fixed position is transferred from the cooling conveyor 26, and the pallet 67 on which the pallet 67 is placed is transferred.
8 is provided. The loading position 25b is
This is the position where the casting 1 and the pallet 67 are loaded onto the cooling conveyor 26. The cooling conveyor 26 is
A hanger 71 supported by rollers is provided on the rail 70, and a pallet 67 can be supported on the hanger 71 and transported in a direction perpendicular to the direction in which the casting 1 is transferred by the transfer means 31.

A pallet transfer means 72 for transferring the pallet 67 between the rotary table 68 and the hanger 71 is provided at the back of the loading position 25b.

Further, the cooling conveyor 26 is configured to form a closed loop between a separately provided unloading station (a station for taking out the object 1 from the hanger 71) and the loading station 25.

First, the specific structure of the pallet 67 is shown in FIGS. 4 and 5. That is, the pallet 67 includes a frame member 73 assembled in a state similar to a lattice, and rollers 74 are supported on both sides of the frame member 73. And frame member 7
Four sets of receiving jigs 75 for placing the four castings 1 in fixed positions on the frame member 73 are arranged at symmetrical positions with respect to the center of the frame member 73. As shown in FIG.
, 8 are guided by the inclination of the guide portion 75a and placed in a fixed position. Further, rollers 76, 76 for pallet clamping are provided at one end of both sides of the frame member 73, and positioning pawls 77, 77 biased laterally by springs are provided on the lower surface sides of both sides of the frame member 73. is provided.

On the other hand, as shown in Figs. 6 and 7, the rotating
For the frame members where the pull 68 and the hanger 71 face each other.

A rail 78 supporting the rollers 74 of the pallet 67.
79 are fixed and each rail 78.7
As shown in FIG. 8, a notch 80 is provided on the lower side of the notch 9, with which the positioning pawl 77 of the pallet 67 engages. Also,
A sand receptacle 81 is supported on the hanger 71 below the rail 79.

The pallet transfer means 72 is located at the loading position 25b.
The pallet 67 can be moved back and forth in the transfer direction by using fixed rails 82 and 82 provided at the same height and in the same direction as the rail 79 of the hanger 71 on the back of the hanger 71, the rail 79 of the hanger 71, and this fixed rail 82. A cart 83 for transferring pallets and a cylinder device 8 that moves the cart 83 forward and backward.
4.

That is, the transfer cart 83 has rollers 85 on both sides thereof.
, 85, and a pair of clamp arms 8 that are opened and closed by a cylinder device 86 on both sides of the loading position 25b.
7,87 are supported.

The pallet 67 is attached to both clamp arms 87, 87.
A recess is provided which engages the clamping roller 76.76.

Next, the operation of the above embodiment will be explained.

First, the mold 10 poured by the mold conveyor 21 is conveyed to the take-out station 22, and the take-out means 30 is sent to the station 22 by the operation of the cylinder device 32 on the frame 27. Then, the lifting table 44 is lowered, and the take-out arm 45 is moved to the receiving seat 7 of the casting 1 by the drive of the motor 38.
, 8. Then, the take-out arm 45 is closed and inserted under the seats 7 and 8 that do not interfere with the cast burrs in the runner 3, and the casting 1 is placed and held on the seats 7.8 and taken out from the mold 10.

The casting 1 taken out by the taking-out means 30 is sent to the sprue folding station 23, placed on the fixed receiver 65, and the sprue 4 is folded. Then, this casting 1 is picked up by the first clamp arm 61 and placed on the movable receiver 66 of the sand removal station 24, and the core sand is removed. Next, the second clamp arm 6
2, the casting 1 is picked up and placed on the pallet 67 of the rotary table 68 of the loading station 25. In this case, the transfer of the casting 1 between the unloading, sprue folding, sand removal, and loading stations 22 to 25 is performed synchronously by the operation of the cylinder device 32.

Thus, the pallet 67 of the rotary table 68 is transferred from the hanger 71 of the cooling conveyor 26. That is, the rotary table 68 is stopped with its rail 70 in the same direction as the fixed rail 82, and when the hanger 71 of the cooling conveyor 26 is in the loading position 25b, the rail 79 of this hanger 71 and the rotary table 68 are The rail 78 and the fixed rail 82 are arranged in a straight line. In this state, the clamp arm 87 of the pallet transfer means 72 holds the pallet 67 of the hanger 71 and connects the pallet 67 with the transfer trolley 83. from there to the rotary table 68. Palette 6
7 is held in position on the rotary table 68 by the engagement of the positioning pawl 77 and the notch 80, and the transfer cart 8
3 is unclamped from the pallet 67, and the fixed rail 8
2 will be returned to the top.

The pallet 67 of the rotary table 68 rotates 90 degrees each time the casting 1 is transferred by the transfer means 31. and,
When the casting 1 is placed on all four sets of receiving jigs 75 on the pallet 67 or on a predetermined number of sets of receiving jigs 75, the transfer trolley 83 is connected to the pallet 67 again with the clamp arm 87, The pallet 67 is transferred from the rotary table 68 to the hanger 7.
1, and press the notch 80 of the above-mentioned positioning pawl 77.
The pallet 67 is held in position on the hanger 71 by engagement with the hanger 71. Thereafter, the pallet 67 and the transfer trolley 83 are uncoupled, and the cooling conveyor 26 is operated to advance the hanger 71 to cool the casting 1 on the pallet 67 while being transported.

Therefore, in the case of the above embodiment, the casting 1 is once positioned on the pallet 67, and then positioned on the hanger 71 via this pallet 67. In this way, the transfer means 31 can smoothly transfer the casting 1 on the pallet 67 with no interference around it, and
Pallet 67 between rotary table 68 and hanger 71
The pallet 67 is transferred only by linear motion, so the transfer cart 83 is moved forward and backward without interfering with the hanger 71 by operating the cylinder device 84 provided outside the hanger 71 as in the above embodiment, and the pallet 67 is transferred. can be carried out smoothly.

In the above embodiment, the loading station 25 is provided with the pallet transfer position 25a, the casting transfer means 31, and the pallet transfer means 72. In some cases, it may be necessary to make things run smoothly.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view of a casting;
FIG. 2 is a plan view of the casting processing system, FIG. 3 is a side view of the system, FIG. 4 is a plan view of a pallet, and FIG. 5 is a side view showing a part of the pallet. FIG. 6 is a plan view of the loading station, FIG. 7 is a side view of the station, and FIG. 8 is a plan view showing pallet positioning means. 1... Casting, 25... Loading station, 25a... Pallet transfer position, 26
... Cooling conveyor, 31 ... Transfer means, 61.62 ... Clamp arm, 67 ...
...Pallet, 68...Rotary table, 7
1... Hanger, 72... Pallet transfer means, 75... Receiving jig. Figure 4 Figure 51

Claims (1)

[Claims] (1) In a cooling conveyance device that is equipped with a loading station for placing castings on each hanger of a cooling conveyor and an unloading station for taking out castings from each hanger, the castings are cooled while being conveyed by the cooling conveyor,
A pallet equipped with a receiving jig for placing castings in a fixed position is removably installed on each hanger of the cooling conveyor, and the pallet is transferred to at least one of the loading station and the unloading station. A transfer position is provided, and a pallet transfer means is provided to transfer pallets between the transfer position and the hanger. A cooling conveyance device for castings, characterized in that a means is provided.