JP4662229B2 - Continuous blasting device for crankshaft - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for continuously shot blasting the entire surface of a crankshaft.
[0002]
[Prior art]
Conventionally, a blasting apparatus that performs shot blasting continuously on a crankshaft is known (Patent Documents 1 to 3). Patent Document 1 describes a blasting device in which a screw conveyor is provided in a shot blast cabinet in parallel and inclined in the longitudinal direction, and a convex portion for product reversal is provided on the outer periphery of the body of the screw conveyor. ing.
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 3-26465 (pages 1 and 2, FIGS. 2 and 4)
[Patent Document 2]
JP 2002-36116 A (page 1, FIG. 1)
[Patent Document 3]
Japanese Utility Model Publication No. 6-71057 (first page, FIG. 1)
[0004]
[Problems to be solved by the invention]
However, since the blasting device as described above has a convex part only on a part of the screw, it is very difficult to reliably invert a product such as a crankshaft having a complicated shape, and the entire circumference of the product is made uniform. There was a problem that blasting was not possible. In addition, it is difficult to reverse all the products in the cabinet at the same time, and it is difficult to move forward while the product is reversed, so the product feed speed is not constant, and the product entangles and falls in the cabinet. There were also problems such as. Further, when the product dimensions change, optimization adjustment such as the number of rotations is required for each product in order to ensure reversal, and there is a problem that the cycle time becomes long.
[0005]
The present invention has been made in view of the above-mentioned problems, and all products carried into the cabinet can be reversed in synchronism, and the products can be moved forward while being always reversed, with different product dimensions. However, an object of the present invention is to provide a continuous blasting device for a crankshaft that efficiently and uniformly blasts the entire product.
[0006]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the crankshaft continuous blasting apparatus according to the present invention has an appropriate interval in the ceiling portion of the central cabinet 1 having a ceiling portion with a high carry-in side and a low carry-out side. In the plurality of shot projection apparatuses 2 and 2 provided, a carry-in cabinet 1A and a carry-out cabinet 1B connected in communication before and after the central cabinet 1, a product carry-in port 3 provided on one side of the carry-in cabinet 1A, and a carry-out cabinet 1B In addition, an unloading conveyor 4 provided at a position lower than the product carry-in port 3 and two drive rotary shafts 5 and 5 are supported at an interval in parallel between the carry-in cabinet 1A and the carry-out cabinet 1B. A continuous blasting device for a crankshaft in which engaging rollers 6, 6, 6 are attached to front and rear end portions and a central portion of rotating shafts 5, 5, A cylindrical body 7 corresponding to the product carry-in port 3 and a cylindrical body 8 corresponding to the carry-out conveyor 4, and a cage 10 formed in a cylindrical shape with a large number of bar members 9 and 9 connected to the central part, In addition, it is configured in an inclined shape toward the ceiling portion, and is mounted and engaged via flanges 12, 12, 12 provided on the outer periphery corresponding to the respective engagement rollers 6, 6, 6 and is freely rotatable. Installed without a screw lead, the crankshaft W held between the rods 9 and 9 is lifted in the circumferential direction and then reversed and dropped in the vertical direction to advance by the amount of inclination. a product inverting and conveying cage body 11 which can be advanced in the direction, to the rear of the carry cabinet 1A product carry-in port 3 located on the straight line of the product reversing and conveying cage body 11, the crankshaft W before Characterized in that the cylindrical body 7 comprising a push cylinder 13 arranged for insertion toward the cage 10.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
According to the present invention, since the reversal can be easily secured, the cycle time can be shortened by increasing the rotational speed of the cage, which is efficient.
In this invention, the pushing cylinder of the workpiece | work W can be arrange | positioned in the rear part of the product entrance of a carrying-in cabinet. This enables efficient product introduction. In the present invention, it is possible to easily collect shots by disposing a screw conveyor for shot collection over the lower part of each cabinet.
[0008]
In the present invention, the means for transporting the work including the cage is divided, that is, the central portion of the cage in which the central portion is formed in a cylindrical shape by a large number of bars, the cylinder corresponding to the product carry-in port, and the carry-out conveyor By adopting a division system that is a cylindrical body corresponding to the above, maintenance is simplified. Further, by making the front part and the rear part of the cage cylindrical, it is possible to prevent the shot from being scattered outside the blast section.
[0009]
【Example】
Embodiments of the present invention will be described below in detail with reference to the drawings. 1, the continuous blasting device for a crankshaft according to the present invention is provided with a central cabinet 1 at the center, a carry-in cabinet 1A on the carry-in side, and a carry-out cabinet 1B on the carry-out side. The ceiling portion of the central cabinet 1 has a high carry-in side and a low carry-out side, and a plurality of shot projectors 2 and 2 are installed at appropriate intervals on the inclined surface.
[0010]
A product carry-in port 3 is provided at the side of the carry-in cabinet 1A, and a carry-out conveyor 4 is provided at a position lower than the height of the product carry-in port 3 in the carry-out cabinet 1B.
Further, between the carry-in cabinet 1A and the carry-out cabinet 1B, two drive rotary shafts 5 and 5 are supported by being inclined so as to be substantially parallel to the inclined ceiling surface of the central cabinet 1 at an appropriate interval. ing.
[0011]
Further, engaging rollers 6, 6, 6 are fixed to the front and rear end portions and the central portion of the rotary shafts 5, 5, and the cylindrical body 7 corresponding to the product carry-in port 3 and the carry-out conveyor 4 are attached to the front and rear portions. A product reversing / conveying cage 11 in which a corresponding cylinder 8 and a cage 10 formed in a cylindrical shape with a large number of rods 9 and 9 at the center are connected to the engaging rollers 6, 6, 6. It is placed and engaged via corresponding flanges 12, 12, 12. The product pushing cylinder 13 pushes the product into the cage 10. Below each cabinet 1, 1A, 1B, a screw conveyor 14 for shot collection is arranged. The drive rotating shafts 5 and 5 are driven by a drive motor 15.
[0012]
Next, the operation of the apparatus constructed as described above will be described. From the state of FIG. 1, a crankshaft W (hereinafter referred to as a workpiece W) is inserted into the product carry-in port 3 and pushed into the cage 10 by the product push-in cylinder 13 via the carry-in cylinder 7. Next, the drive motor 15 is operated to sequentially insert the workpieces W from the product carry-in port 3 while rotating the rotating shafts 5 and 5 and the engaging rollers 6, 6 and 6 in the direction of the arrow in FIG. 2.
[0013]
As shown in FIG. 3, the workpiece W inserted in this manner is lifted in the circumferential direction by the rotation of the cage 10, and after being lifted to some extent, falls down in the vertical direction while being reversed, so that the engaging rollers 6, 6, 6 And it advances in the advancing direction by the amount that the cage 10 is inclined. Furthermore, a slight slip due to the inclination is added, and the workpiece W can be transported without using a special transport device. During these reversals and conveyances, shots are projected from the shot projectors 2 and 2, and the entire surface of the workpiece W is uniformly blasted.
[0014]
The workpiece W that has been uniformly processed in this way passes through the cylindrical portion of the cylinder 8 at the rear end of the cage 10, is transferred to the product carry-out conveyor 4, and is carried out of the machine body. By continuously performing such an operation, it is possible to reliably and efficiently perform uniform blasting on the entire surface of a crankshaft product that is complicated in shape and difficult to reverse and convey. Although the maximum size for inserting the workpiece W into the cage 10 is restricted, the reversal can be reliably performed even if the size or shape of the workpiece W is changed, and it can be easily changed by changing the rotation speed. The conveyance speed can also be adjusted. Therefore, it is possible to shorten the cycle time by increasing the rotational speed. In addition, there is no need for a special device for transporting the workpiece, and there are various effects such as simplification of the whole device and improvement of maintainability.
[0015]
【The invention's effect】
As is clear from the above description, the present invention is such that the workpiece is inserted into the inclined cylindrical cage and the blasting process is performed while rotating the workpiece together with the cage. It is possible to efficiently and uniformly blast the entire surface by making it move forward.
[Brief description of the drawings]
FIG. 1 is a partially cutaway configuration diagram showing an embodiment of the present invention.
FIG. 2 is a view taken in the direction of arrows AA in FIG.
FIG. 3 is a diagram of an inversion / conveyance of a cage and a workpiece.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Central cabinet 1A Carry-in cabinet 1B Carry-out cabinet 2 Shot projector 3 Product carry-in port 4 Product carry-in conveyor 5 Drive rotary shaft 6 Engagement roller 7 8 Cylindrical body 9 Bar material 10 Cage 11 Product inversion and conveyance cage body 12 Flange 13 Product pushing Cylinder 14 Screw conveyor 15 Drive motor W Workpiece (Crankshaft)

Claims (2)

A plurality of shot projection devices 2 and 2 provided at appropriate intervals on the ceiling portion of the central cabinet 1 having a ceiling portion with a high carry-in side and a low carry-out side, and connected to the front and rear of the central cabinet 1 The carry-in cabinet 1A and the carry-out cabinet 1B, the product carry-in port 3 provided on one side of the carry-in cabinet 1A, the carry-out conveyor 4 provided at a position lower than the product carry-in port 3 in the carry-out cabinet 1B, and the carry-in cabinet 1A And two drive rotating shafts 5 and 5 are supported at an interval in parallel between the unloading cabinet 1B and engaging rollers 6, 6, 6 at the front and rear end portions and the central portion of the rotating shafts 5, 5. A continuous blasting device for a crankshaft with
Arranged is a cylinder 10 formed in a cylindrical shape by a cylinder 7 corresponding to the product inlet 3 provided in the front and rear, a cylinder 8 corresponding to the carry-out conveyor 4, and a large number of bars 9 and 9 connected to the center. And is configured to be inclined toward the ceiling, and is mounted and engaged via flanges 12, 12, 12 provided on the outer periphery corresponding to the respective engagement rollers 6, 6, 6 and rotated. Without being provided with a screw lead, the crankshaft W held between the bars 9, 9 is lifted in the circumferential direction and then tilted by being inverted and dropped in the vertical direction. only a product inverting and conveying cage body 11 which can be advanced in the direction of travel, the rear of product carry-in port 3 of the carry cabinet 1A located on the straight line of the product reversing and conveying cage body 11, the crankshaft W Continuous blasting device for a crankshaft, characterized by comprising a pushing cylinder 13 which is arranged for insertion toward the cage 10 from the tubular body 7.   The continuous blasting device for crankshafts according to claim 1, wherein a screw conveyor 14 for shot collection is disposed under the cabinets 1, 1A, 1B.

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