KR20090045074A - Material supply device - Google Patents

Abstract

The material supply apparatus according to the present invention has a vibration absorbing configuration in which a shock and vibration from a press device or the like are difficult to be transmitted to a material supply device, and the inner housing through the inner housing and the vibration absorbing member for accommodating the material supply device. It includes an outer housing connected to. Vibration constraining members are provided between the housings to limit the degree of freedom of vibration transmitted to the inner housing through the vibration absorbing member only when the impact force acts on the outer housing. The vibration constraining member includes an upper plate member whose upper and lower surfaces are interposed between the uppermost wall of the outer housing and the uppermost wall of the inner housing and the lower plate member whose upper and lower surfaces are interposed between the bottom wall of the outer housing and the bottom wall of the inner housing.

Description

Material Feeding Equipment {MATERIAL FEEDING APPARATUS}

The present invention relates to a material supply device for intermittently supplying a certain amount of material such as a sheet material, a wire rod, etc. to a working machine such as a press device, and more particularly, to a press device for a small part material used in the electronic parts industry with high accuracy and high speed. It relates to a material supply device suitable for supplying to.

In general, small electronic components such as connectors and terminals are manufactured to perform press processing by intermittently supplying a quantity of material wound around a coiler to a press apparatus using a material supply apparatus (for example, JP-A-2004-). 142876).

In order to press process such a small electronic component with high accuracy and high speed, the press apparatus must be able to operate with high speed with high accuracy and to supply the material with high speed with high accuracy.

Conventionally, devices for intermittently supplying a material such as a plate or a wire to a working machine such as a press device include a roll feeder, a fixed gripper, and a feeder for feeding the material between the main roll and the subroll. And a gripper feeder for conveying the material between the movable grippers that are movable towards and away from the fixed gripper (eg, US Pat. Nos. 5,720,421 and JP-A-2000-135530). Reference).

In addition, certain roll feeders are known which are configured to be rotatably driven by a servomotor to enable synchronous operation with a press apparatus (see, for example, US Pat. No. 5,720,421).

Conventionally, 10G to 20G impact force is known to be applied during press working in a press device, and when the material supply device is mounted on the press device, the material supply device and the press device are firmly secured to reduce the influence of the impact force. Should be tightened. Accordingly, the vibration caused by the impact force generated on the press device is transmitted directly to the material supply device, so that the vibration may cause damage in a place where the mounting state of the cover or the like is unstable, and deterioration of the supply accuracy of the material. This will be. Conventionally, in order to avoid such a disadvantage, a part where breakage may occur is mounted on an apparatus such as a press apparatus or the like in which vibration is generated through a vibration absorbing member (cushion member) such as rubber (for example, JP-U-6-). 76744).

The vibration absorbing member of the prior art is suitably provided in a place which does not affect the feeding accuracy of the material between the mount and the press apparatus such as a cover, for example, but is not suitable for use in a place where the feeding accuracy is adversely affected.

For example, in the above-described roll feeder in which the main roll is rotatably driven by the servomotor, the rotation of the servomotor directly affects the accuracy of the material supply. Accordingly, when the servomotor and the press apparatus are directly coupled together, the vibration caused by the impact force generated on the press apparatus directly acts on the servomotor, thereby reducing the accuracy of material supply and the servomotor. There is a risk of causing damage to the associated electrical signal transmission circuit or the like.

In order to avoid this disadvantage, it can be considered to provide elasticity to the mounting portion between the servomotor and the press apparatus through the medium of the vibration absorbing member. However, when the mounting portion of the servomotor retains more elasticity than necessary, the supply accuracy of the material is lowered, which makes it difficult to take effective measures against vibration.

An object of the present invention is to solve the above-mentioned problems and to provide a material supply apparatus having a vibration absorbing configuration that prevents shock and vibration from the outside from being transmitted to the material supply apparatus or the like.

In order to solve the above problems, the present invention provides an inner housing for housing a material supply device, an outer housing surrounding the inner housing and connected to the inner housing through a vibration absorbing member, and between the inner and outer housings. It is provided, comprising a vibration constraining member for limiting the degree of freedom of vibration transmitted to the inner housing through the vibration absorbing member in one direction when an impact force acts on the outer housing.

In the present invention, the housing has a dual structure such that vibration caused by the impact force acting on the outer housing is attenuated by a vibration absorbing member (or cushion member) such as dustproof rubber and transferred to the inner housing. Accordingly, it is possible to effectively prevent damage to the material supply device and the electric signal transmission circuit associated therewith, which are accommodated in the inner housing.

When vibration is generated, vibration absorbing members such as vibration-proof rubber are easily displaced in the X-axis direction (left and right direction), Y-axis direction (up and down direction), and Z-axis direction (rear direction), which axes are perpendicular to each other. It tends to be freely displaced in the direction of pivoting around the axes. However, in the present invention, the vibration restricting member restricts the degree of freedom of vibration transmitted from the outer housing to the inner housing through the vibration absorbing member in one direction. As a result, the material supply device accommodated in the inner housing vibrates only in the vertical direction, so that the material supply can be stably performed at high speed with high accuracy.

When the material supply apparatus is fixed to the press apparatus to be used, the direction of vibration due to the impact generated on the press apparatus is mainly a vertical direction, and the direction in which the material supplied to the press apparatus by the material supply apparatus is supplied is a horizontal direction. to be. Accordingly, the vibration constraining member preferably limits the degree of freedom of vibration transmitted to the inner housing in the vertical direction. According to this aspect, even when the vibration is transmitted to the material supply device accommodated in the inner housing, the direction of the vibration is in the vertical direction, and hardly affects the accuracy of supplying the material in the horizontal direction.

In this case, the vibration absorbing member includes an upper vibration absorbing member interposed between the uppermost wall of the outer housing and the uppermost wall of the inner housing and a lower vibration absorbing member interposed between the bottom wall of the outer housing and the bottom wall of the inner housing. The vibration constraining member includes an upper plate member having an upper and lower surface interposed between the uppermost wall of the outer housing and the uppermost wall of the inner housing and a lower plate member having an upper and lower surface interposed between the bottom wall of the outer housing and the bottom wall of the inner housing. It is preferable.

1 shows the arrangement relationship between the material supply device 1, the press device 4 and the coiler 3. The material supply device 1 fixed to the press device 4 is provided with a main roll 5 and a subroll 6 in which the material 2 wound around the coiler 3 constitutes a material supply device. Interposed therebetween, it is comprised so that it may supply intermittently to the said press apparatus 4 in a fixed amount. The press apparatus 4 includes molds 7 and 8 for press working such as punching or the like. The vibration caused by the impact force generated on the press apparatus 4 at the time of press working is mainly directed upward and downward as indicated by arrow A of FIG.

As shown in Figures 2 to 6, the housing of the material supply device 1 has a double structure, the vibration absorbing member (or vibration protection rubber) formed around the inner housing (9) and the inner housing (9) dustproof rubber or the like (or A main roll 5 and a sub roll 6 constituting the material supply device, including an outer housing 11 connected to the inner housing 9 through a cushion member 10a, 10b, 10c, and 10d. This inner housing 9 is housed. The main roll 5 is rotatably supported in the inner housing 9 with bearings 12a and 12b therebetween, and the subroll 6 has an inner housing with bearings 13a and 13b interposed therebetween. Rotably supported at (9), the servomotor 14 is connected to the main roll (5).

The material supply device 1 is configured such that the main roll 5 and the sub roll 6 interpose the material 2 therebetween, and the servomotor 14 presses the material 2 in a predetermined amount. The main roll 5 is rotatably driven in an intermittent manner so as to convey the material 2 in the direction of arrow B in FIG. 3 to supply it in an intermittent manner.

In addition, a kind of material supply device, in which a pair of rolls are transported through a material, is a mechanism for operating in synchronism with the operation of the press device to release the interposition force applied to the material by a pair of rolls immediately before press working. And a mechanism for adjusting the spacing between the pair of rolls in accordance with the thickness of the material. For these mechanisms, it is sufficient to adopt a known configuration as appropriate.

Between the inner housing 9 and the outer housing 11, to limit the degree of freedom of vibration transmitted to the inner housing 9 through the vibration absorbing members (10a to 10d) in one direction when the impact force acts on the outer housing (11) A vibration constraining member is provided.

In the embodiment shown in the figure, the vibration restraining member has an upper plate member 15 whose upper and lower surfaces are interposed between the uppermost wall 11a of the outer housing 11 and the uppermost wall 9a of the inner housing 9. The upper and lower surfaces thereof are interposed between the bottom wall 11b of the outer housing 11 and the bottom wall 9b of the inner housing 9 and include a lower plate member 16 disposed in parallel with the upper plate member 15. do.

In addition, in the embodiment shown in the figure, the vibration absorbing members 10a to 10d are upper vibrations interposed between the uppermost wall 11a of the outer housing 11 and the uppermost wall 9a of the inner housing 9. And the lower vibration absorbing members 10c and 10d interposed between the absorbing members 10a and 10b and the bottom wall 11b of the outer housing 11 and the bottom wall 9b of the inner housing 9.

The upper plate member 15 is formed near the axial ends of the inner surface of the uppermost wall 11a of the outer housing 11 and near the axis center of the uppermost wall 9a of the inner housing 9. It is interposed between the outer surfaces of ') and is fixed to the uppermost wall 11a of the outer housing 11 and the uppermost wall 9a of the inner housing 9 by bolts 17a, 17b, 17c.

The lower plate member 16 is formed near the axial opposite ends of the inner surface of the bottom wall 11b of the outer housing 11 and near the axis center of the bottom wall 9b of the inner housing 9. It is interposed between the outer surfaces of ') and is fixed to the bottom wall 11b of the outer housing 11 and the bottom wall 9b of the inner housing 9 by bolts 18a, 18b, and 18c.

The upper vibration absorbing members 10a and 10b extend through the upper plate member 15 and are mounted between the uppermost wall 11a of the outer housing 11 and the uppermost wall 9a of the inner housing 9. . In addition, the lower vibration absorbing members 10c and 10d extend through the lower plate member 16 and are disposed between the bottom wall 11b of the outer housing 11 and the bottom wall 9b of the inner housing 9. Is mounted.

7 (a) to 7 (c) show the lower plate member 16, the lower vibration absorbing members 10c and 10d, and the lower plate member mount 9b 'of the bottom wall 9b of the inner housing 9; Shows the relationship between them. As shown in FIG. 7A, the lower plate member mount 9b 'may provide the lower vibration absorbing members 10c and 10d to each surface of the lower plate member mount 9b' 1 × 1. It is formed to have a length smaller than the width (W) of the inner housing (9). In addition, as shown in (b) of FIG. 7, the lower plate member mount 9b ′ has a width W of the inner housing 9 to stabilize the bending deformation of the lower plate member 16 when vibration is applied. It may have a length substantially equal to). FIG. 7C shows a variation of the configuration shown in FIG. 7A in which the lower vibration absorbing members 10c, 10d are provided 2 x 2 on each side of the lower plate member mount 9b '. Shows.

The upper plate member 15, the upper vibration absorbing members 10a and 10b and the upper plate member mount 9a 'of the uppermost wall 9a of the inner housing 9 are shown in FIGS. 7A to 7C. The lower plate member 16, the lower vibration absorbing members 10c, 10d and the lower plate member mount 9b 'of the bottom wall 9b of the inner housing 9 may be arranged in the same manner as shown in FIG. have. However, the state where each member is disposed near the top of the inner and outer housings and the state where each member is disposed near the bottom of the housing do not necessarily have to be the same. For example, in the form of the upper plate member 15, the upper vibration absorbing members 10a and 10b, and the upper plate member mount 9a ', the form shown in FIG. 7A is adopted, and the lower plate member 16 is adopted. In the form of the lower vibration absorbing members 10c and 10d and the lower plate member mount 9b ', it is also possible to adopt the form shown in Fig. 7C. In this way, by varying the number of vibration absorbing members between the top and bottom of the housing, a difference in natural frequency is generated, which makes it possible to increase the resonance frequency of the entire apparatus and to create a situation in which resonance is unlikely to occur.

8 (a) to 8 (c) show a state in which the degree of freedom of vibration is limited by providing an upper plate member 15 and a lower plate member 16 constituting the vibration constraining member.

8 (a) shows that the outer housing 11 and the inner housing 9 are connected to each other through the vibration absorbing members 10a to 10d, and any upper plate member 15 or the lower plate is disposed between the housings 11 and 9. The member 16 also shows a configuration that is not provided. In this case, when vibration occurs on the outer housing 11, the vibration absorbing members 10a to 10d and the inner housing 9 connected to the outer housing 11 through the X-axis direction (the axes of which are perpendicular to each other) It is freely displaced in the left-right direction, Y-axis direction (up-down direction), and Z-axis direction (rear direction). In addition, these members are freely displaced in the direction pivoting about each axis, that is, in the directions indicated by arrows a, b, and c in Figs. 8A to 8C.

According to the configuration shown in FIG. 8B obtained by adding the upper plate member 15 to the configuration shown in FIG. 8A, the direction of turning about the Y-axis direction, that is, FIG. 8A The displacement in the direction indicated by arrow b is limited. Further, according to the configuration shown in FIG. 8C obtained by adding the lower plate member 16 parallel to the upper plate member 15 to the configuration shown in FIG. 8B, the upper plate member 15 and The direction of displacement is made only in the up-down direction, which is the direction in which the bending deformation of the lower plate member 16 is caused, so that the vibration is limited only in the Y-axis direction.

The material supply apparatus according to the embodiments shown in the drawings produces the following useful effects.

(1) Vibration caused by the impact force acting on the outer housing 11 is attenuated by the vibration absorbing members 10a to 10d and transmitted to the inner housing 9. As a result, it is possible to effectively prevent damage to the material supply device accommodated in the inner housing 9 and its associated electric signal transmission circuit.

(2) The upper plate member 15 and the lower plate member 16 constituting the vibration constraining member limit the degree of freedom of vibration transmitted to the inner housing 9 in one direction, that is, in the vertical direction. As a result, the material supply device accommodated in the inner housing 9 vibrates only in the up and down direction, so that the material supply can be stably performed at high speed with high accuracy.

(3) When the vibration in the up and down direction mainly indicated by arrow A in FIG. 1 is generated by the impact generated by the press apparatus 4, the inner housing 9 and the material supply device housed therein are in the up and down direction. Vibrate. Here, as shown in Figure 1, L represents the distance between the center of the main roll 5 and the sub-roll 6 and the mold (7, 8), S is the amplitude of the inner housing 9 and the material supply device The influence that the vibration of the amplitude S is on the supply direction of the material 2 (that is, the supply error) ΔL is expressed by the following equation and is very fine. Thereby, the material 2 can be supplied correctly to the press apparatus 4.

ΔL = L (1-cos (tan ^-1 S / 2L))

(4) Since the vibration constraining member is very simple in configuration using only the upper plate member 15 and the lower plate member 16, providing the vibration constraining member does not increase the size of the material supply device. In addition, since there is no sliding contact, lubrication is not necessarily required, and thus no need for maintenance over a long period of time.

Although the material supply apparatus according to the embodiments shown in the drawings includes a roll feeder using a main roll and a subroll, it is also possible to adopt a gripper system having a fixed gripper and a movable gripper as a mechanism for supplying materials. Of course it is possible.

1 is a schematic front view showing an arrangement relationship between a material supply device, a press device, and a coiler according to an embodiment of the present invention;

2 is an axial cross-sectional view showing a material supply device;

3 is a cross-sectional view seen in the transverse direction in FIG.

4 is a cross-sectional view showing the arrangement relationship between the outer housing and the inner housing shown in FIG. 2, seen in the direction of arrows IV-IV of FIG. 5;

5 is a sectional view seen in the direction of arrow V-V in FIGS. 1 and 2;

FIG. 6 is a sectional view seen in the direction of arrow VI-VI of FIG. 4; FIG.

7 (a), 7 (b) and 7 (c) are cross-sectional views seen in the direction of arrow VII-VII of FIG. 4, and show three different kinds of vibration absorbing member, vibration restricting member and lower plate member mount. A diagram showing an arrangement; And

8 (a), 8 (b) and 8 (c) are cross-sectional views illustrating a state in which the vibration constraining member restricts the vibration of degrees of freedom.

Claims (5)

In the material supply device, An inner housing for accommodating a material supply device, an outer housing surrounding the inner housing and connected to the inner housing through a vibration absorbing member, and provided between the inner and outer housings, when an impact force acts on the outer housing. And a vibration constraining member for limiting the degree of freedom of vibration transmitted to the inner housing through the vibration absorbing member in one direction. The method of claim 1, The vibration constraining member is a material supply device, characterized in that to limit the degree of freedom of vibration transmitted to the inner housing in the vertical direction. The method of claim 2, The vibration absorbing member includes an upper vibration absorbing member interposed between the uppermost wall of the outer housing and the uppermost wall of the inner housing and a lower vibration absorbing member interposed between the bottom wall of the outer housing and the bottom wall of the inner housing. The upper and lower surfaces of the vibration constraining member are interposed between a top plate member having an upper and lower surface interposed between a top wall of the outer housing and a top wall of the inner housing and a bottom wall of the outer housing and a bottom wall of the inner housing. Material supply apparatus comprising a lower plate member. The method of claim 1, The outer housing is a material supply device, characterized in that fixed to the housing of the press apparatus. The method of claim 1, The material supply device includes a main roll and a sub roll for conveying the material by interposing the material therebetween, wherein the main roll is driven by a servo motor.

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