JP4038796B2 - Material supply device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a material supply device such as a former for forging a bolt or other various parts.
[0002]
[Prior art]
Conventionally, there are a roller feed type and a grip feed type as a material supply device for supplying a material such as a metal wire to a former for forging bolts and various other parts. The roller feed type has the advantage that the structure is simple, the feed amount can be changed arbitrarily without changing the mechanical dimensions, and there is no need for a detent mechanism, but the roller peripheral surface makes point contact with the material. Therefore, a large stress is applied to the material, and the contact surface may be damaged. On the other hand, since the grip feed type can take a large contact area, it has the advantage of suppressing large concentrated stress on part of the material and preventing the contact surface from being scratched, but the structure becomes complicated Since the grip body itself reciprocates, it is disadvantageous for high speed and long feed amount.
[0003]
Therefore, in order to take advantage of both of the above, the roller feed type can be changed to grip feed just by removing a part of its components, and the main drive mechanism can be used as it is for either type. It has been known. Specifically, a frame is removably attached to the rear of the bearing box that supports the pair of upper and lower feed roller shafts, and the guide rod is attached to a guide rod that is installed in parallel with the supply wire on the frame. As a guide, a moving block that moves forward and backward is supported, and further provided with a grip claw that grips a material when the block moves forward and releases when the block moves backward, and a rotary driving body provided on the rotating shaft of the block and the bearing box; It is set as the structure which connected these by the linkage (for example, refer patent document 1).
[0004]
[Patent Document 1]
Japanese Utility Model Publication No. 3-277 (Page 1, Fig. 1)
[0005]
[Problems to be solved by the invention]
However, according to the above-described material supply device, in order to change from the roller feed type to the grip feed type, the roller is removed from the rotation axis of the bearing box and the rotary drive body is provided on the rotation axis. Since it has a structure in which a frame is fixed to the rear, and then the rotary drive and the moving block having the clip mechanism are connected by linkage, the change is very troublesome and laborious. Therefore, it is necessary to secure a moving space for the moving block on the outside, and there is a problem that the whole is enlarged.
[0006]
Therefore, according to the present invention, the roller feed type can be changed to the grip feed simply by removing a part of the components, and the drive mechanism by the servo motor can be used for any type as it is, and the change is easy and easy. Therefore, it is an object of the present invention to provide a material supply apparatus that can be simplified in size and reduced in size, and that can improve feed force, feed speed, and feed accuracy.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention according to claim 1 of the present application is a pair of upper and lower and front and rear for arranging a pair of upper and lower rollers for material supply on the bearing member in the front and rear direction in the supply direction. The rotary shafts of the rotary shafts are supported, and a roller is detachably attached to one end of each of the rotary shafts, and a rotating gear is attached to the other end of each rotating shaft. The moving gears mesh with each other, and the lower and upper front and rear rotating gears are linked to the servo motor to form a roller feed mechanism that feeds the material with a pair of upper and lower and front and rear rollers. With the rollers removed from one end of each, a pinion gear is detachably attached to one end of each rotating shaft, and a rack gear portion that meshes with these pinion gears on the lower front and rear pinion gears A lower grip body is arranged, and an upper grip body having a rack gear portion meshing with these pinion gears is arranged on the lower surface of the upper front and rear pinion gears, and a fixed grip portion is provided on one of the opposed parts of the upper and lower grip bodies. Also, on the other side, a movable grip part that moves close to and away from the fixed grip part is provided via a cylinder, and grip material is held by both grip parts when the upper and lower grip bodies move forward with the rotation of each pinion gear, and released when moving backward. The mechanism is constructed.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
For example, FIG. 1 and FIG. 2 show a case in which the material supply device 1 is used as a roller feed mechanism 1A.
In that case, the rotating shafts 7, 8, 9, and 10 for supporting the upper, lower, and front and rear pairs of rollers 3, 4, 5, and 6 for supporting the material are respectively supported by the box body 2 serving as a bearing member. Rollers 3, 4, 5, and 6 are detachably attached to one end portions of the rotary shafts 7, 8, 9, and 10, respectively, and rotating gears 11, 12, 13, and 14 are fixed to the other end portions, respectively. ing. Of these rotating gears 11, 12, 13, and 14, the rotating gear 11 and the rotating gear 12 that are vertically opposed to each other, the rotating gear 13 and the rotating gear 14 are engaged with each other, and the lower front side The rotating gear 12 and the rear rotating gear 14 are interlocked and connected to the servo motor 16 via a drive gear 15 that meshes with both the rotating gears 12 and 14. Thus, a roller feed mechanism for supplying a material a made of, for example, a coiled metal wire to a quill (not shown) of a bolt former F is constituted by a pair of rollers 3, 4.5 and 6 each of upper and lower and front and rear. The The servo motor 16 is appropriately servo-controlled by a forging mechanism or a cutter mechanism of the bolt former F or a command from an operator.
[0009]
3 and 4 show a case where the material supply device 1 is used as the grip feed mechanism 1B.
In that case, with the rollers 3, 4, 5, 6 removed from the one ends of the rotary shafts 7, 8, 9, 10 respectively, the pinion gears 17, 18, 19 and 20 are removably attached. A lower grip body 22 having a rack gear portion 21 that meshes with the pinion gears 18, 20 is disposed on the upper surfaces of the lower pinion gears 18, 20, and meshes with the pinion gears 17, 19 on the lower surfaces of the upper front and rear pinion gears 17, 19. An upper grip body 24 having a rack gear portion 23 is disposed. A fixed grip portion 25 is provided on the upper surface of the lower grip body 22, and a movable grip portion 26 that is close to and away from the fixed grip portion 25 is located at a portion facing the fixed grip portion 25 of the upper grip body 24. 27. Thus, the grip feed mechanism 1B is configured to hold the material a by the both grip portions 25 and 26 when the upper and lower grip bodies 22 and 24 move forward with the rotation of the pinion gears 17, 18, 19, and 20 and release them when they move backward. The
[0010]
Further, a detent grip mechanism 28 for preventing the material A from returning when the upper and lower grip bodies 22 and 24 are retracted is provided on the rear side of the grip feed mechanism 1A. The detent grip mechanism 28 is composed of a fixed grip body 29 and a movable grip body 31 that moves close to and away from the fixed grip body 29 by the second cylinder 30.
[0011]
The grip timing by the upper and lower grip bodies 22 and 24 of the grip feed mechanism 1B is performed in synchronization with the servo motor 16, that is, the material a is gripped at the same timing as the start of driving of the servo motor 16, and the servo motor 16 The material a is released at the same timing as the stop. The grip timing by the grip bodies 29 and 31 of the detent grip mechanism 28 is performed at the same timing as when the servo motor 16 is stopped, and the grip is released at the same timing as when the servo motor 16 is started to be driven.
[0012]
According to the above-described configuration, the material a made of, for example, a coiled metal wire is sandwiched between the pair of upper, lower, and front and rear rollers 3, 4, 5, 6 by the roll feed mechanism 1 A provided in advance, and the bolt former F The servo motor 16 is driven in synchronism with the forging mechanism, that is, the forging timing. As a result, the rollers 3, 4, 5, and 6 are rotated by a predetermined angle through the drive gear 15, the rotation gears 11, 12, 13, and 14 and the rotation shafts 7, 8, 9, and 10, so that the material a has a predetermined length. It can be intermittently supplied to the bolt former F quill. At this time, since the servo motor 16 is used, it is possible to accurately adjust the feed amount. For this reason, the leading edge of the material a is stopped by a stopper (not shown) and the rollers 3, 4, 5, 6 and the material a No slipping occurs between the rollers a, and the rollers 3, 4, 5, and 6 can be rotated forward and backward to reverse the material a as required.
[0013]
In order to change from the roll feed mechanism 1A to the grip feed mechanism 1B according to other purposes, first, the rollers 3, 4, 5, 6 are removed from the rotary shafts 7, 8, 9, 10 and then the rotary shaft 7 is removed. , 8, 9, and 10 are removably attached to the pinion gears 17, 18, 19, and 20, respectively. Next, a lower grip body 22 having a rack gear portion 21 that meshes with the pinion gears 18, 20 is disposed on the upper surfaces of the lower pinion gears 18, 20, and these pinion gears 17, 19 are disposed on the lower surfaces of the upper front and rear pinion gears 17, 19. What is necessary is just to arrange | position the upper grip body 24 with the rack gear part 23 which meshes with. Thereafter, a detent grip mechanism 28 is disposed on the rear side of the upper and lower grip bodies 22, 24.
[0014]
In such a state, the servo motor 16 is driven in synchronization with the forging timing of the bolt former F, and the upper and lower grip bodies 22 and 24 of the grip feed mechanism 1B are advanced from the retracted position in the counter feed direction of the material a. At this time, the first cylinder 27 is extended, and the material a is held by the fixed upper and lower grip bodies 22 and 24 and the movable upper and lower grip portions 25 and 26. Further, the second cylinder 30 is shortened at the same timing. As a result, the fixing of the detent grip mechanism 28 and the holding of the material a by the movable grips 29 and 31 are released, and the movement of the material a in the supply direction is permitted. Then, the rotation of the rotary shafts 7, 8, 9, and 10 accompanying the rotation of the servo motor 16 causes the upper and lower grip bodies 22 and 24 to move forward through the pinion gears 17, 18, 19, and 20 to move the material a to the bolt former F. A fixed length is supplied to the quill quill. After the supply of the material a to the quill is completed, the first cylinder 27 is shortened, and the upper and lower grip bodies 22 and 24 are fixed to the material a and the movable upper and lower grip portions 25 and 26 are released. At the same time, the second cylinder 30 is extended, the material a is gripped by the fixing of the detent grip mechanism 28 and the movable grips 29 and 31, and the return movement of the material a in the anti-feed direction is prevented. Thereafter, the upper and lower grip bodies 22, 24 of the grip feed mechanism 1B are moved back to the retracted position in the direction opposite to the supply of the material a.
[0015]
On the other hand, when returning from the grip feed mechanism 1B to the roller feed mechanism 1A, the pinion gears 17, 18, 19, 20 and the upper and lower grip bodies 22, 24 are removed from the rotary shafts 7, 8, 9, and 10 and required for the respective rotary shafts. The rollers 3, 4, 5, and 6 are attached while the detent grip mechanism 28 is removed.
[0016]
As described above, the roller feed mechanism can be changed to the grip feed mechanism by simply removing a part of its components, and the drive mechanism by the servo motor 16 can be used as it is for any feed mechanism. In addition, when the change is made, the rollers 3, 4, 5, 6 and the pinion gears 17, 18, 19, 20 are replaced, and the upper and lower grip bodies 22, 24 are simply attached to the pinion gears 17, 18, 19, 20 Since the upper and lower grip bodies 22, 24 can be arranged at the positions of the rollers 3, 4, 5, 6 in a simple operation, the movement space of the upper and lower grip bodies 22, 24 can be set to the rollers 3, 4, 24. There is no need to secure them behind 5 and 6, the structure can be simplified and the size can be reduced. In addition, since the upper and lower grip bodies 22, 24 can be set to be long, the feed force, feed speed, and feed accuracy can be improved.
[0017]
In the embodiment described above, the lower rotating gears 12 and 14 are directly linked to the servomotor 16, but the upper rotating gears 11 and 13 may be directly linked to the servomotor 16. In addition to the structure in which the fixed grip portion 25 is provided in the lower grip body 22 and the movable grip portion 26 is provided in the upper grip body 24, the movable grip portion is provided in the lower grip body and the fixed grip portion is provided in the upper grip body 24. You may do it.
[0018]
【The invention's effect】
As described above, according to the present invention, the roller feed mechanism can be changed to the grip feed mechanism by simply removing a part of its components, and the drive mechanism by the servo motor can be used as it is for any feed mechanism. The change is easier and easier than the conventional one, the structure is simplified and the size can be reduced, and the feed force, feed speed, and feed accuracy can be improved.
[Brief description of the drawings]
FIG. 1 is a partially omitted side view of a material supply device of the present invention.
FIG. 2 is a cross-sectional view taken along the line II in FIG.
FIG. 3 is a partially omitted side view showing a state changed to a grip feed mechanism.
4 is a cross-sectional view taken along the line of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Material supply apparatus 2 Box body 3 Roller 4 Roller 5 Roller 6 Roller 7 Rotating shaft 8 Rotating shaft 9 Rotating shaft 10 Rotating shaft 11 Rotating gear 12 Rotating gear 13 Rotating gear 14 Rotating gear 16 Servo motor 17 Pinion gear 18 Pinion gear 19 pinion gear 20 pinion gear 21 rack gear part 22 lower grip body 23 rack gear part 24 upper grip body 25 fixed grip part 26 movable grip part 27 first cylinder

Claims (1)

A pair of upper and lower rollers for supplying the material to the bearing member are axially supported by a pair of upper and lower and front and rear rotation shafts for arranging the rollers in parallel in the supply direction. The rotary gears are detachably mounted on the other end, and the rotary gears facing each other in the vertical direction are meshed with each other, and the lower or upper front / rear rotary gears are servomotors. A roller feed mechanism that feeds the material by a pair of upper and lower and front and rear rollers is connected to each other, while a roller is removed from one end of each rotating shaft, and a pinion gear is attached to one end of each rotating shaft. A lower grip body having a rack gear portion that meshes with these pinion gears is arranged on the upper surface of the lower front and rear pinion gears, and the lower surface of the upper front and rear pinion gears. An upper grip body having a rack gear portion that meshes with these pinion gears is disposed, and a movable grip portion that is close to and away from the fixed grip portion on one side and the other on the other side of the upper and lower grip bodies. Is provided via a cylinder to constitute a grip feed mechanism that grips the material by both grip portions when the upper and lower grip bodies are moved forward along with the rotation of each pinion gear, and releases them when moved backward. .

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