JP3952574B2 - Sizing equipment for cold rolling - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sizing device for cold rolling for sizing the outer diameter of a work material of a cold rolled product.
[0002]
[Prior art]
Conventionally, as work materials for cold-rolled products, for example, there are bearing races (exterior rings, interior rings) and the like. In the case of this outer ring, the steel material is heated and formed into a ring shape by hot bar forging, then heat treated, then scaled down by shot blasting, and then cold rolled (cold Rolling foam) expands the outer diameter and forms a ball slot inside. Next, the outer ring material that has been cold-rolled is sized by the cold-rolling sizing device. By sizing in this way, the roundness of the exterior ring material is improved.
[0003]
As a sizing device for cold rolling used here, one having the following structure is used.
An input chute for forming a groove shape for placing an exterior ring material (hereinafter referred to as a workpiece material) while being rolled up is disposed. Also, a sizing die is arranged on the side surface near the tip of the charging chute. In addition, a punch for pushing the workpiece material is arranged facing the entrance side of the die. Furthermore, a discharge chute for discharging the sizing work material is arranged on the outlet side of the die.
[0004]
When this cold rolling sizing device is automatically operated, the workpiece material is pushed into the die by the punch so that the next workpiece material is sent to the charging chute after the punch returns to the original position. It is set by the sequence.
[0005]
[Problems to be solved by the invention]
However, when the operator manually operates for some reason, as shown in FIG. 5A, there are cases where two workpiece materials 102 and 103 are continuously sent into the loading chute 101.
[0006]
Then, the first workpiece material 102 stops at a position slightly passing through the center of the die, and the second workpiece material 103 stops adjacent to the first workpiece material 102.
When the punch 104 is pushed in from this state, the first work material 102 is slightly displaced toward the tip of the charging chute, so the first work material 102 is pushed in and the corner of the second work material 103 is pushed. 103a may be pushed in while being squeezed, and the punch 104 may cause the corner 105 to be thinned as shown in FIG. The second workpiece material 103 that has been thinned in this way is sent to the final process as it is.
[0007]
Therefore, if the work material 103 lacking in the final process is to be selected, it will be necessary to select from hundreds of thousands of products, which is very troublesome.
Therefore, the present invention has been made in view of such a problem, and an object thereof is to provide a cold rolling sizing device that does not feed a thinned workpiece material to the final process.
[0008]
[Means for solving the problems and effects of the invention]
In order to achieve the above-mentioned object, the invention according to claim 1 is characterized in that a charging chute is provided for forming a groove shape for allowing a ring-shaped workpiece material formed by cold rolling to stand while being rolled. A die for sizing the outer diameter of the workpiece material is arranged on the side surface in the vicinity of the tip of the chute, a punch for pushing the workpiece material against the inlet side of the die is arranged, and the outlet side of the die In the cold rolling sizing device in which the discharge chute is arranged on the second chute, two workpiece materials are continuously fed into the input chute and are adjacent to the first workpiece material. There when stopped, characterized in that a sensor for sensed the stopping of the two eyes of the workpiece material in front of the position of the die of the input chute.
[0009]
According to the first aspect of the present invention, since the detection sensor for the second workpiece material is provided before the position of the dice, it is possible to know that two workpiece materials have been fed continuously. If a buzzer is sounded in conjunction with this, or if the second work material is removed by stopping the operation immediately, it is possible to prevent the occurrence of a thin workpiece material.
[0010]
The invention according to claim 2 is the sizing device for cold rolling according to claim 1, wherein the detection sensor includes a fluoroscopic sensor and a striker.
The striker has an elongated striker body with a fulcrum at the top, the striker body is provided so as to be able to move in a pendulum shape in the longitudinal direction of the charging chute, and the lower end is in contact with the workpiece material While forming possible, attach a sensing plate to the striker body,
Usually, the sensing plate is provided at a position where the fluoroscopic sensor can be seen through, and the sensing plate is provided so as to interrupt the fluoroscopic sensor when the striker main body is caught by the second workpiece material and stopped. To do.
[0011]
According to the second aspect of the present invention, it is possible to more clearly detect the feeding of two workpieces by the sensing plate blocking the see-through of the see-through sensor.
According to a third aspect of the present invention, in the cold rolling sizing device according to the second aspect, a gauge is provided on the entrance side of the die so as to be movable up and down and left and right.
[0012]
According to the third aspect of the present invention, the work material can be centered at the center of the die by bringing the work material into contact with the gauge. Accordingly, it is possible to prevent the first work material from being shifted to the front side. Further, even if the second workpiece material is sent by mistake, the punch does not hit the second workpiece material.
[0013]
Moreover, since the gauge is arranged so as to be movable up and down, left and right, it is not necessary to change the gauge when rolling a workpiece of a different size, and the mold can be changed safely in a short time.
According to a fourth aspect of the present invention, in the sizing apparatus for cold rolling according to any one of the first to third aspects, a discharge port for a discarded material having a door that can be opened and closed is provided in the discharge chute. .
[0014]
According to the invention described in claim 4, since the discharge port for the waste material is provided in the discharge chute, the two workpiece materials and the waste material at the initial stage of operation that have been stopped before the die by stopping once by opening the door are discharged from the discharge port. Can be discharged. Also, the workpiece can be sent again to the product line ahead of the discharge chute by closing the door. Therefore, it is possible to prevent the two workpiece materials stopped before the dice due to the stop and the waste material at the beginning of operation from being sent to the product line. Therefore, it is possible to omit the work of selecting the workpiece material that has been thinned in the final process or the discarded material at the beginning of the operation.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic plan view showing a cold rolling sizing device according to an embodiment of the invention. FIG. 2 is a schematic cross-sectional view of the gauge as viewed from the front side. FIG. 3 is a schematic cross-sectional view of the discharge chute viewed from the front side. 4A and 4B show a detection sensor, where FIG. 4A is a schematic plan view, and FIG. 4B is a schematic front view.
[0016]
As shown in FIG. 1, the sizing apparatus 1 for cold rolling includes an input chute 2, a die 3, a gauge 4, a pushing punch 5, a discharge chute 10, and a workpiece material detection sensor 20. Yes.
The feeding chute 2 forms a groove shape for placing the workpiece material 6 which has been cold-rolled while standing and rolling it, and is inclined.
[0017]
The dice 3 are arranged on the side surface near the tip of the charging chute 2. This die 3 is for sizing the outer diameter of the workpiece 6 uniformly.
The gauge 4 is made up of cages 4a and 4b, and is arranged at the tip of the charging chute 2 so that the workpiece 6 can be stopped by being centered on the die 3. As shown in FIG. 2, the gauges 4a and 4b are respectively attached to the long holes of the support base 7 with bolts 4c and 4d. Further, as shown by the arrows, the gauges 4 can be moved up and down and left and right by loosening the bolts 4c and 4d and moving the bolts 4c and 4d through the elongated holes. Therefore, when switching to a workpiece of a different size, it is only necessary to change the die, move the gauge 4a to the left and right (longitudinal direction of the input chute 2), and move the gauge 4b up and down. It is not necessary to remove the gauge.
[0018]
Further, as shown in FIG. 1, the punch 5 is disposed so as to be opposed to the entrance side of the die and to be pushed into the hole of the die.
Further, as shown in FIG. 3, the discharge chute 10 is arranged so as to discharge the sized workpiece 6 with an inclination on the outlet side of the die. A waste material discharge port 11 is provided on the lower surface of the discharge chute 10, and a door 12 that can be opened and closed downward is attached to the discharge port 11 by a cylinder (not shown) with a shaft 13 as a fulcrum. ing.
[0019]
The detection sensor 20 includes a fluoroscopic sensor 28 and a striker 21. The striker 21 includes a striker body 22 and a sensing plate 25, and the sensing plate 25 is attached to the upper portion of the long striker body 22 via a flange 23.
The support shaft 24 is inserted through the flange 23 at the upper part of the striker body 22 through the bearing K. The support shaft 24 is attached to the substrate 27.
The striker 21 is provided so as to be movable in a pendulum shape in the longitudinal direction of the charging chute 2 with a support shaft 24 as a fulcrum.
[0020]
Further, the lower end portion of the striker body 22 is formed so as to be able to contact the workpiece material 6.
This detection sensor 20 is normally located at a position where the sensing plate 25 can be seen through the fluoroscopic sensor 28 and is caught by the second workpiece 6 to which the striker body 22 has been sent, and stops when the sensing plate 25 sees through the fluoroscopic sensor 28. It is provided to block out.
[0021]
Reference numeral 26 denotes a stopper for the striker 21.
In addition, an interruption type stopper (not shown) for feeding the workpiece materials 6 one by one is provided upstream of the detection sensor 20 provided on the charging chute 2.
Next, operation | movement of the sizing apparatus 1 for cold rolling is demonstrated.
[0022]
As shown in FIG. 1, the door on the lower surface of the discharge chute 10 is closed, and the workpiece 6 [one piece] is fed into the feeding chute 2 as shown by the arrow A from the state in which the punch 5 is retracted and applied to the gauge 4. Center the die 3 in contact.
At this time, as shown in FIG. 4, the work material 6 comes into contact with the tip of the striker main body 22, and the striker main body 22 is pushed and moved by the weight of the work material 6 as indicated by the dotted line. Is returned to the original position indicated by the weight of the striker body 22.
[0023]
Next, the punch 5 is pushed in and the workpiece material 6 is sized. By sizing, the workpiece 6 passes through the hole of the die and is discharged to the discharge chute 10 as shown by an arrow B in FIG.
However, when two workpiece materials 6 are mistakenly sent for some reason, the striker body 22 comes into contact with the second workpiece material 6 as shown by the dotted line in FIG. It cannot stop and stops. Then, the sensing plate 25 blocks and stops the fluoroscopic sensor 28 as indicated by the dotted line. As a result, it is detected that two are sent. At the same time, a horn is sounded, the operation is stopped immediately, and the door 12 of the discharge port 11 of the discharge chute 10 is opened as shown by the dotted line in FIG.
[0024]
When the operation is returned from this state, the two workpiece materials in the input chute 2 are sized, discharged as waste material from the discharge port 11 of the discharge chute 10, the door 12 is closed, and the normal operation is resumed. This operation may be performed manually or automatically.
[0025]
By doing so, it is possible to prevent the center deviation between the die 3 and the workpiece 6. Further, since the two workpiece materials 6 that have been temporarily stopped before the die are removed from the discharge port 11 of the discharge chute 10 as discarded materials, the thinned workpiece material 6 is not sent to the final process. Accordingly, it is possible to omit the work of sorting the workpiece material 6 that has been thinned in the final process.
[0026]
As mentioned above, although embodiment of this invention was described, various implementation can be performed unless it exceeds the range of the meaning of this invention. For example, in the embodiment of the invention, it has been described that the discharge port 11 is provided on the lower surface of the discharge chute 10 and dropped downward, but the discharge chute may be provided on the side surface of the discharge chute and distributed by a sorting plate.
[0027]
Alternatively, the sensing plate 25 of the detection sensor 20 may be directly attached to the striker main body 22 and the fluoroscopic sensor 28 may be arranged in accordance with this.
[Brief description of the drawings]
FIG. 1 is a schematic plan view showing a sizing device for cold rolling according to an embodiment of the invention.
FIG. 2 is a schematic cross-sectional view seen from the front side showing a gauge according to an embodiment of the invention.
FIG. 3 is a schematic cross-sectional view of the discharge chute according to the embodiment of the present invention as seen from the front side.
4A and 4B show a detection sensor according to an embodiment of the invention, in which FIG. 4A is a schematic plan view, and FIG. 4B is a schematic front view.
[Fig. 5] Explanatory drawing of a thinned workpiece material of the conventional example [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Cold rolling sizing apparatus, 2 ... Input chute, 3 ... Dies, 4 ... Gauge, 5 ... Punch, 6 ... Work material, 10 ... Discharge chute, 11 ... Discharge port, 12 ... Door, 20 ... Detection sensor , 21 ... striker, 22 ... striker body, 25 ... sensing plate, 28 ... fluoroscopic sensor.

Claims (4)

Place a throwing chute that forms a groove shape to allow the ring-shaped workpiece material that has been cold-rolled to stand and roll
Place a die for sizing the outer diameter of the workpiece material on the side surface near the tip of the charging chute,
Place a punch for pushing the workpiece material facing the entrance side of the die,
In the sizing device for cold rolling formed by arranging a discharge chute on the outlet side of the die,
When two workpiece materials are continuously sent into the throwing chute and the second workpiece material stops adjacent to the first workpiece material, the die chute is positioned before the die placement position. the two eyes of cold rolling sizing device, wherein a stop of the work material is provided a detection sensor for sensed. The detection sensor comprises a fluoroscopic sensor and a striker,
The striker has an elongated striker body with a fulcrum at the top, the striker body is provided so as to be able to move in a pendulum shape in the longitudinal direction of the charging chute, and the lower end is in contact with the workpiece material While forming possible, attach a sensing plate to the striker body,
Usually, the sensing plate is provided at a position where the fluoroscopic sensor can be seen through, and the sensing plate is provided so as to interrupt the fluoroscopic sensor when the striker main body is caught by the second workpiece material and stopped. The sizing device for cold rolling according to claim 1. The sizing apparatus for cold rolling according to claim 2, further comprising a gauge disposed on the entrance side of the die so as to be movable up and down and left and right. The sizing device for cold rolling according to any one of claims 1 to 3, wherein the discharge chute is provided with a waste material discharge port having a door that can be opened and closed.

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