JPH055733U - Workstopper - Google Patents

Abstract

(57) [Summary] [Purpose] To facilitate the rolling of a workpiece rolling down a passage after a temporary stop. [Structure] An inclined passage 5 for rolling down a circular work 1
A work stopper 10 provided in the middle of the work to temporarily stop the work, then release the stop and roll down the work again.
The push member 12 that gives a slight movement to the work at the time of releasing the stop is provided on the part facing the work.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a work stopper provided in a passage for rolling down a circular work and temporarily stopping the work.

[0002]

[Prior Art]

 The shape of a circular work such as a disk or ring. For example, in an inspection device that automatically inspects the outer diameter of the bearing outer ring, as shown in FIG. Is carried into the inclined trough-shaped passage 2 from the start end (carry-in end), rolls toward the end (carry-out end), and is temporarily stored in the passage 2. Then, the work 1 positioned at the end of the passage 2 is pushed up by the push-up member 4 of the push-up cylinder 3 and is carried into the inspection passage 5. After that, the push-up cylinder 3 descends and stands by to load the next work. The passage 5 has a gutter shape that is inclined like the passage 2, and the work 1 rolls down its inclined surface and is stopped by a work stopper 6 which is vertically movable in the middle of the passage 5. The outer diameter is inspected by the inspection device 7 at the stopped position.

After the outer diameter inspection is completed, the work 1 rolls down the passage 5 again when the inspection device 7 and the work stopper 6 rise, and then passes through a direction changer (not shown) or the like to the next step (for example, a CRE machine). Roll up to. The push-up cylinder 3, the work stopper 6, and the inspection device 7 operate at predetermined timings, and after the inspection of the previous work is completed, the work stopper 6 descends and waits for the inspection of the next work, and the push-up cylinder 3 moves from the passage 2. The next work is pushed up and loaded into the passage 5. Such an operation is repeated, and the outer diameter of the work is inspected sequentially.

[0004]

[Problems to be solved by the device]

 By the way, the work (outer ring) 1 that has been heat-treated by annealing or the like is often covered with black skin or the like and has burrs or the like. Therefore, when the work 1 is temporarily stopped by the work stopper 6 while rolling down the passage 5, even if the work stopper 6 is lifted and the work 1 is released from the stop after the inspection, the work 1 is stopped. Depending on the location and condition of the burr, the burr may interfere with the burr to start rolling, and it may remain stopped at that position. Further, a scale may be attached and accumulated near the stop position of the work 1 on the bottom surface 5b of the passage 5, and this may hinder the rolling of the work 1 after the stop is released.

In this state, when the work stopper 6 is lowered to start the inspection of the next work, the already-inspected work (hereinafter referred to as “previous work”) 1 is held at the stop position by the work stopper 6 again. Meanwhile, the next work rolls down in the passage 5 and hits the previous work 1 to stop. Therefore, the inspection device 7 inspects the previous work 1 again. When the work stopper 6 rises after this inspection, the previous work 1 is pushed by the latter work and these two works roll down simultaneously, so that the latter work is not inspected until the next process. It will roll. Moreover, if two workpieces are simultaneously supplied to the next process, the work in that process may be disabled, so that the automatic line is temporarily stopped.

If such a work often does not flow after the inspection, the work efficiency is significantly lowered and the cost is increased. For example, assuming that 10% of product (outer ring) flow abnormalities (stops) occur on the forged product charging chute of the fully automatic cold rolling forming machine, and if 150,000 products are manufactured per month, the number of occurrences of abnormalities Will be 15,000 times / month, and if the processing time per time is 40 seconds, the monthly downtime will reach 166 hours, which will cost about 600,000 yen.

The present invention has been made in view of the above-mentioned points, and is a work in which a work temporarily stopped in the middle of a path for rolling and lowering a circular work is smoothly rolled again after the stop is released. The purpose is to provide a stopper.

[0008]

[Means for Solving the Problems] According to the present invention to achieve the above object, a circular work is provided in the middle of an inclined passage for rolling and descending, and the work is temporarily stopped and then stopped. The work stopper, which is released and rolls down the work again, is provided with a pushing member for giving a slight movement to the work when the work is released from the stop, at a portion facing the work. ..

[0009]

[Action]

 The work rolling down the passage is temporarily stopped by the work stopper, and undergoes, for example, a shape inspection at the stop position. After this inspection, the work stopper separates from the work and releases the stop of the work. The work stopper imparts a slight movement to the work by the pushing member when the work stopper is separated from the work. As a result, the work easily starts rolling after the stop is released and descends the passage.

[0010]

【Example】

 An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. The same members as those shown in FIG. 3 are designated by the same reference numerals. In FIG. 1, the passage 2 and the passage 5 are formed in a straight line with a step and are inclined, and the passage 5 is located at a position higher than the passage 2. That is, the passage 2 is a sloped passage having a high start end (not shown) side and a low end 2a side, and a passage 5 is an inclined passage having a high start end 5a and a low end end (not shown) side. 5a is set at a position slightly higher than the diameter of the work 1 with respect to the end 2a of the passage 2. Then, these passages 2 and 5 are formed in a rectangular cross-section that is slightly wider than the thickness (width) of the work 1, and the passage 2 serves as a passage for temporarily storing the loaded work 1. The passage 5 is a passage for inspecting the work 1.

The end surface 2 c of the terminal end 2 a of the passage 2 is vertically erected to be continuous with the opening end of the bottom surface 5 b of the passage 5 and the work 1 is attached to the terminal end 2 a of the bottom surface 2 b of the passage 2. A slit 2d having the same length as the diameter of is provided. A flange 2e having the same shape as the slit 2d is provided at the open end of the slit 2d. The push-up member 4 of the push-up piston 3 has the same shape as the slit 2d and is slidably fitted in the flange 2e.

The push-up member 4 is inclined so that the upper surface 4 a is flush with the bottom surface 2 b of the passage 2, and its height is set slightly higher than the height (diameter) of the work 1. As shown by the chain double-dashed line, at the position where the upper surface 4a is pushed up so as to be flush with the bottom surface 5b of the passage 5, the lower end 4b thereof is located inside the slit 2d of the passage 2. The push-up member 4 is fixed to the upper end of a rod 3a of a push-up cylinder 3 having a lower end 4b vertically provided.

The inspection device 7 is arranged in the middle of the passage 5 so as to be able to move upward and downward with respect to the passage 5. A work stopper 10 vertically moves up and down at a predetermined position slightly downstream of the inspection device 7. It is arranged as possible. The inspection device 7 is a measuring device for measuring the shape of the work 1, for example, the outer diameter, and the sensor 8 is provided so as to face the outer peripheral surface of the work 1 rolling in the passage 5.

The work stopper 10 is set to be slightly narrower than the width of the passage 5 and slightly longer than the diameter of the work 1, and is vertically movable in the passage 5. The lower surface 10b of the work stopper 10 is slightly separated from the bottom surface 5b of the passage 5 when the work stopper 10 descends to the lowest position, and the lower surface 10b rolls in the passage 5 when the work stopper 10 rises to the highest position. It is set to a position slightly higher than 1 so as not to interfere with the work 1.

As shown in FIG. 2, the work stopper 10 is provided with a hardened stopper plate 11 on an end surface 10 a that abuts against the work 1. The lower end of the stopper plate 11 and the end surface 10 a of the work stopper 10 are attached to the work stopper 10. A pushing member 12 is provided between the two to face the work 1. The pushing member 12 is formed of, for example, a leaf spring bent into a substantially J shape, and its base end is sandwiched between the end face 10a and the lower end of the stopper plate 11, and is formed together with the stopper plate 11 by a bolt (not shown). It is fixed to the work stopper 10 and its tip slightly projects toward the lower part of the work 1. The pushing member 12 is designed such that, when the work 1 is in contact with the stopper plate 11 of the work stopper 10, the tip of the pushing member 12 is slightly separated from the work 1 so as not to interfere with the work 1.

The inspection device 7 and the work stopper 10 are provided for the rods of the cylinders (both not shown) vertically arranged above the passage 5 and extendable with the rods facing downward. It is attached to the tip. Each of the cylinders and the push-up cylinder 3 is composed of, for example, an air cylinder, and is driven at a predetermined timing by a control device (not shown).

The operation will be described below. As shown in FIG. 1, it is assumed that the push-up member 4 has an upper surface 4a flush with the bottom surface 2b of the passage 2 and a plurality of works 1 carried in the passage 2. Further, the inspection device 7 is in a position raised so as not to interfere with the work 1 rolling down the passage 5 as shown by the chain double-dashed line, and the work stopper 10 is lowered in the passage 5 to the lowest position. Suppose

When the push-up cylinder 3 extends in this state, the push-up member 4 ascends as shown by the chain double-dashed line and pushes up only one work 1 on the upper surface 4a. The push-up cylinder 3 stops at the position when the upper surface 4a of the push-up member 4 rises to a position where it is flush with the bottom surface 5b of the passage 5. At the same time, the work 1 placed on the push-up member 4 rolls and is carried into the passage 5. At this time, the work 1 located at the lowest position in the passage 2 is held in this position by contacting the end surface 4c of the lifted member 4 which has risen.

On the other hand, the work 1 carried into the passage 5 rolls down in the passage 5 and comes into contact with the stopper plate 11 (FIG. 2) of the work stopper 10 to stop and be held at that position. .. Then, the inspection device 7 descends, and the sensor 8 measures the outer diameter of the work 1. The push-up cylinder 3 is shortened after the work 1 is loaded into the passage 5, and the push-up member 4 is lowered to the original position shown by the solid line. Then, the next work 1 rolls on the push-up member 4 and is positioned at the end of the passage 2 and stands by.

After the measurement of the outer diameter of the work 1 is completed, the inspection device 7 and the work stopper 10 are lifted and separated from the work 1. At this time, the inspection device 7 is gently separated from the work 1. On the other hand, the work stopper 10 pushes the work 1 by the tip of the pushing member 12 at the lower end when the work stopper 10 rises, and slightly retracts as shown by the chain double-dashed line in FIG. 2 to impart a slight movement to the work 1. Since the pushing member 12 is formed of a leaf spring, the pushing member 12 flexes and causes the work 1 to gradually retract in the direction of the arrow while retracting. As a result, even when the work 1 is stopped due to a bounce and the movement is bad due to burrs or the like, or the scale is attached and accumulated near the stop position of the work 1 on the bottom surface 5b of the passage 5, and the work 1 stops. Even if the start of rolling of the work 1 after being released is obstructed, the work 1 can be easily rolled and abnormal flow of the work after inspection in the passage 5 can be prevented.

In the present embodiment, the case where the pushing member 12 of the work stopper 10 is formed of a leaf spring has been described, but the present invention is not limited to this, and the end surface 10a of the work stopper 10 facing the work 1 or the stopper. Alternatively, the lower end of the plate 11 may be a mere protrusion that is projected so as to face the work 1.

[0022]

[Effect of the device]

 As described above, according to the present invention, the circular work is provided in the middle of the inclined passage for rolling down, and after temporarily stopping the work, the stop is released and the work rolls down again. Since the work stopper has a structure in which a pushing member that gives a slight movement to the work at the time of releasing the stop of the work is provided in the portion facing the work, after the work is stopped by the work stopper, the work is stopped. It is possible to easily start rolling, and as a result, it is possible to prevent abnormal flow of products rolling down the passage, improving workability and reducing costs accordingly. Become. Further, there is an effect that the configuration is simple.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a transfer mechanism to which a work stopper according to the present invention is applied.

FIG. 2 is an enlarged view of the work stopper of FIG.

FIG. 3 is a sectional view of a transport mechanism to which a conventional work stopper is applied.

[Explanation of symbols]

 1 Work 2, 5 Passage 3 Push-up cylinder 4 Push-up member 7 Inspection device 10 Work stopper 11 Stopper plate 12 Pushing member

Claims (1)

[Claims for utility model registration] [Claim 1] A circular work is provided in the middle of an inclined passage for rolling down, and after temporarily stopping the work, the stop is released and the work rolls down again. A work stopper, wherein a pushing member that gives a slight movement to the work when the stop of the work is released is provided at a portion of the work stopper facing the work.