JPS6147768B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a reversing and positioning device for castings, which positions castings sent from a pouring place when transferring them to another conveying means.

Traditionally, cast products taken out of poured molds are
After being run through a knock-out machine to remove molding sand adhering to the surface, the cast product is placed on a fork of a product take-out device that matches the shape of the cast product, and
The fork is then transferred by reversing it to a laterally circulating hanger conveyor;
Alternatively, after being taken out of the knock-out machine, it is held in a special reversing machine that matches the shape of the casting, the direction of travel is changed, and then it is placed on a fork and taken out outward from the reversing machine. The castings are transferred to the hanger conveyor and sent to the next process, but in any case, the castings that are transferred onto the forks are not always placed in a stable state at the center position on the forks, and may be placed on one side. They are often placed in uneven and unstable conditions,
Therefore, even if the casting falls to the ground when being carried on a fork to the hanger conveyor, or when being transferred to the hanger conveyor, or even if the casting is forcibly transferred to the hanger conveyor, , the castings are placed in an uneven and unstable state on the hook of the circulating hanger conveyor, which causes various inconveniences during transportation, and the castings may fall due to the slight impact caused by the running of the hanger conveyor. There are various drawbacks, such as the negative effects of lowering work efficiency.

The present invention was completed with the aim of providing a reversal positioning device for cast products that does not have the above-mentioned drawbacks.
The illustrated embodiment will be described in detail.

Reference numeral 1 denotes a frame erected on a foundation, and at both upper ends of the frame 1 are a pair of rotatable clamp boards 14 perpendicular to the traveling direction of the cast product 2 sent by a transport device (not shown) or the like. are mounted facing each other with a space between them so that the cast product 2 can be inserted, and the clamp part 3 is attached to a ball bearing 5 that is fitted and held in a bearing 4 erected on the frame 1. A rotary cylindrical shaft 6 is provided so as to be rotatable by fitting the rotary cylindrical shaft 6, and a rotary frame 7 is fixed to the tip of the rotary cylindrical shaft 6, and the base end of a rotary arm 9 is integrally connected to the rear end via a key 8. Furthermore, the proximal side surface of the rotating arm 9 is attached to the clamp cylinder 11 via the cylinder lid 10, using a fastening tool such as a bolt inserted through holes equally spaced through the flange portions of the cylinder lid 10 and the clamp cylinder 11. Pistons 1 connected in series and capable of sliding by supplying and discharging fluid pressure to and from the clamp cylinder 11
2 and a piston rod 13 to which the piston 12 is fixed, and the tip side of the piston rod 13 protruding from the clamp cylinder 11 passes through the inside of the rotating cylindrical shaft 6 so that the tip portion protrudes from the end of the rotating cylindrical shaft 6. A clamp board 14 for holding the cast product 2 is fixed to the tip end thereof, so that the clamp board 14 can be moved forward and backward. Guide tubes 15 and 6 are respectively fixed to the cylinder lid 10 and the end of the rotating cylindrical shaft 6 and hold the piston rod 13 in a movable manner; The tip side of one cylindrical flange 17 is fitted with a slight gap into an annular groove 19 provided on the side surface of a large diameter portion formed at the end of the rotating cylindrical shaft 6, and the other cylindrical flange 17 is fitted with a slight gap. The tip side of the cylindrical flange 18 is fitted into an annular groove 20 provided on the side surface of the rotating arm 9 with a slight gap, forming a seal to prevent dust and other objects from entering the bearing 4 from the outside. are doing. Further, at the tip of the rotary arm 9, the tip of the piston rod 22 of the reversing cylinder 21 rotatably attached to the side surface of the frame 1 is attached to a pin 22a.
The rotary cylindrical frame 7 further includes two cylindrical shafts symmetrical with respect to the rotary cylindrical axis 6.
Guide tubes 23 are arranged at respective positions, and the tips of guide rods 24 that are slidably fitted into the guide tubes 23 are connected to the back of the clap board 14 fixed to the tips of the piston rods 13. Therefore, the rotating frame 7 can be reversed by the operation of the reversing cylinder 21 via the rotating arm 9 and the rotating cylindrical shaft 6, and the clamp board 14 is configured to be simultaneously reversed by the reversing of the rotating frame 7. It is becoming. Furthermore, on the front surface of each of the clamp boards 14 which are opposed to each other with a gap between them by the opposing clamp parts 3, an appropriate number of holders 25 of the cast product 2, such as pin members, are attached at arbitrary positions. As shown in FIG. 4, the receiver 25 is installed between the two clamp boards 14 in an appropriate manner approximately along the outer shape of the cast product 2 that is brought in from a knockout machine (not shown). They are arranged on the surface of the clamp board 14 to surround the periphery of the cast product 2 at intervals. When the clamp board 14 is reversed in the clockwise direction in FIG. 4 while regulating the outer shape of the cast product 2, the notch 27 of the cast product 2 is used to position the cast product 2 front and back, and up and down.
A rectangular positioning plate 26 is provided on the clamp board 14 at a position corresponding to the clamp board 14, so that the positioning plate 26 engages and fits into the notch 27 after the reversal. Note that if the external shape of the cast product 2 cannot be processed due to the shape formed by the receiver 25, the receiver 25 such as a pin member may be replanted in the preliminary hole 28 provided in advance. It is possible to process even if the outer shape of the cast product 2 changes in various ways, and the positioning plate 26 is provided at a position corresponding to the notch 27 of the cast product 2 and the shape of the notch 27.
The relationship between the two may be such that a positioning plate having a concave shape corresponds to the shape of a protrusion provided on a part of the cast product 2, or depending on the shape of the cast product 2, the positioning plate 26 may be used as a positioning plate. Instead, the receiver 26 may be simply formed to surround the shape of the cast product 2, or furthermore, a thin plate member may be connected in succession instead of a pin member or the like to form the shape. Reference numeral 26 denotes a mounting seat formed on one side of each rotating frame 7, and a fixing bracket 30 is provided on each of the mounting seats, and the stepped holes provided in each fixing bracket 30 are connected by screwing at opposing ends to form an integral unit. The base end of each piston rod 31 is inserted and supported, and both ends are tightened with nuts 32, and a cylinder 33 for positioning the cast product 2 is fitted on the outer periphery of the position where the piston 31a of each piston rod 31 is fitted and fixed. The clamp board 14 can be moved back and forth along the piston rod 31 by fluid pressure in parallel to the direction in which the clamp board 14 moves back and forth;
Further, the fixed shafts 3 erected on the fixed bearings 34 protruding outward by the fixed brackets 30, respectively.
5 rotatably supports a pulley 36, and one end of a guide wire 37 that is wound around the pulley 36 is connected to a cylinder 33 that can move forward and backward, and the other end is connected to the other cylinder 33 that faces each other. The moving speeds of the pair of positioning cylinders 33 are completely synchronized, and a pair of positioning members 38 for moving the cast product 2 to a predetermined position are provided on the sides of each cylinder 33, sandwiching the cast product 2 therebetween. By operating each cylinder 33 on one side of the pair of clamp boards 14, at least the space between the two clamp boards 14, 14 is spaced at a distance slightly wider than the width of the clamp boards 14. A rectangular cutout groove 39 provided on one side of the clamp board 14 is formed to allow the positioning member 38 to move across the clamp board 14. . In addition, 40 is a connecting member provided to connect a pair of opposing rotating frames 7 so that both rotating frames 7 interlock and rotate at the same time, and includes a pair of clamp parts 3, a clamp board 14, and a positioning member. Reference numeral 38 is an adjustment bolt that is rotated simultaneously in conjunction with the operation of the reversing cylinder 21, and 40 is an adjustment bolt that moves the pulley 36 to adjust the tension of the guide wire 37.
Reference numeral 42 denotes a stopper for positioning the rotating frame 7, and one stopper (not shown) at the same end is further provided at the rear end, and 43a, 43b, 4
3c, 43d, 43e are limit switches for checking process operation, 44a, 44b, 44c, respectively.
indicates limit application.

With this structure, when the casting 2 is conveyed to the middle of the opposing clamp parts 3 from a knock-out machine (not shown), the left and right clamp cylinders 11 are operated and the piston rods 13 are pushed out. , the casting 2 is fixed to the tip of the piston rod 13 and clamped to the clamp board 14.
The forward movement of the clamp board 14 is confirmed by the switch pad 44b coming into contact with the limit switch 43c, and the clamp cylinder 11 is stopped. Reversing cylinder 21
operates, and the rotating arm 9, a pair of rotating frames 7 facing each other via the rotating cylindrical shaft 6, the clamp cylinder 11, and the receiver 25 are operated with each bearing 4 as a fulcrum.
Clamp board 14 containing the casting 2
and piston rod 3 for positioning the cast product 2.
1. At the same time, the cylinder 33 is inverted 90 degrees clockwise in FIG. 4, so that the switch pad 44a provided on the cylinder lid 10 of the clap cylinder 11 comes into contact with the limit switch 43a, and the inversion is confirmed. The reversing cylinder 21 is stopped, and the cast product 2 held between both clamp boards 14 by the holder 25 moves inside the cage-like body formed by the holder 25 while its outer shape is restricted. The notch 27 fits into a positioning plate 26 provided at a position corresponding to the notch 27 formed in the center of the cast product 2, so that the front and rear, upper and lower positions of the cast product 2 are approximately at predetermined positions. . Next, when the pair of cylinders 33 are operated to approach the casting 2 relatively, each cylinder 33 is connected to the guide wire 37 via the pulley 36, so each cylinder 33 is moved relatively close to the cast product 2. The positioning member 36 fixed to the cylinder 33 slides on the piston rod 31 in perfect synchronization with the piston rod 31, and the positioning member 36 fixed to the cylinder 33 moves the casting 2 held in the receiver 25 between the two clamp boards 14 to the proper position. The cylinder 33 is forcibly moved to a predetermined position and positioned.
is reversely operated to move the positioning member 38 away from the casting 2 and retreat to the initial starting position, and the switch pad 44c comes into contact with the limit switch 43e via a plate member protruding from the cylinder lid of the cylinder 33, so that the cylinder is activated. 33 was confirmed to have returned, the cylinder 33 was stopped, and then the clamp cylinder 11 was operated in reverse, the piston rod 13 moved back, and the cast product 2 was released from between both clamp boards 14 and was waiting below. Each clamp board 14 is placed in a predetermined state on a fork (not shown) and transferred onto a hanger conveyor (not shown) that circulates on the side, and each clamp board 14 is stopped after its return stroke is confirmed by a limit switch 43d. 14. By integrally inverting the clamp cylinder 11, cylinder 33, etc. by 90 degrees in the opposite direction to the previous time using the reversing cylinder 21, the entire system returns to the starting state. By repeating these processes, the cast products 2 that have been sequentially conveyed are changed in direction or corrected in position, and are transferred from the foyer to the hanger conveyor for the next process in the correct state. In the example, the clamp board 14 and the positioning member 38 can be integrally reversed using a device consisting of a reversing cylinder 21, a rotating frame 7, etc.
Of course, the present invention is not limited to the one shown in the above embodiment as long as the clamp board 14 and the positioning member 36 can be integrally reversed at the same time.

As is clear from the description of the embodiments described above, the present invention is advantageous in that the cast product is turned over to a predetermined stable position and posture suitable for transportation, and is further moved to the correct position before being transferred. When a product is placed on the fork of the product removal device and transported to the hanger conveyor for the next process, the cast product is always placed stably at the center position on the fork, which can lead to accidents such as falling. Therefore, even when transferring from the fork to a circulating hanger conveyor, etc., the transfer is carried out in a stable state at the center position, so there is no inconvenience during transfer, and the work is easy. It has many advantages, such as not causing problems that reduce efficiency, and is of great value to the industry.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention: Fig. 1 is a front view, Fig. 2 is a plan view, Fig. 3 is a partially cutaway front view of the clamp part, and Fig. 4 is the relationship between the cast product and the clamp board. FIG. 5 is a partially cutaway front view of a portion for positioning the cast product, and FIG. 6 is a plan view thereof. 7: Rotating frame, 14: Clamp board, 2
1: Reversing cylinder, 25: Receiver, 38: Positioning member.

Claims (1)

[Claims] 1. A pair of clamp boards 14 each having a receiver 25 on the front surface that surrounds the periphery of the cast product are movably opposed to each other, and the cast product is placed on one side of the clamp board 14 so as to be movable in the same direction as the clamp board 14. A reversing and positioning device for a cast product, characterized in that a pair of positioning members 38 for moving to a predetermined position are provided facing each other, and a device is further provided for reversing each pair of clamp board 14 and positioning member 38 as one unit.