KR0118699Y1 - Driving belt of chip mounter - Google Patents

Abstract

The present invention relates to a tensioning device for the drive belt of an electronic component mounter, and in particular, to compensate for the sagging of the belt that transmits power from the driving motor to the cam for controlling the lifting of a plurality of suction nozzles provided on the head of the electronic component mounter. The present invention relates to a tensioning device for driving belts of an electronic component mounting apparatus for improving power transmission efficiency, the rotation shafts 20 and 30 on which the pulleys 22 and 32 connected by the belt 40 are fixed, and on the shaft. A driving motor 10 to which the driving pulley 12 in contact with the inside of the belt 40 is fixed, and an operation rod 36 that moves up and down in conjunction with several cams 34 installed on the rotation shaft 30. An electronic part mounting apparatus comprising: a moving plate (52) and a fixed plate (50) having long holes (54) formed at both sides of the moving hole (52), respectively; A movable plate 60 in sliding contact with the surface of the fixed plate 50 by the fastening bolt 54a and the fastening nut 54b inserted into the long hole 54; One side is screwed to the movable plate 60 and the pulley 70 is coupled to the bearing 72 in front of the support shaft 62 is prevented from loosening by the nut (62a), and the upper end of the fixed plate 50 It is coupled to the bracket 56 is fixed, the lower end is provided with a support bolt 64 is coupled to the upper end of the movable plate to prevent movement to the lower portion of the movable plate.

Description

Driving Belt Tension Control Device of Electronic Component Mounting Machine

1 is a perspective view showing the configuration of the prior art.

2 is a perspective view showing the configuration of the present invention.

Figure 3 is an exploded perspective view showing the configuration of the present invention.

Figure 4 is a cross-sectional view of the coupling state of the present invention.

* Explanation of symbols for main parts of the drawings

10: drive motor 12: drive pulley

20,30: rotating shaft 22,32: pulley

34: Cam 36: Operation rod

40: belt 50: fixing plate

52: Moving ball 54: Long ball

54a: tightening bolt 54b: tightening nut

56: Bracket 60: Moving plate

62: support shaft 62a: nut

64: support bolt 70: tension pulley

72: bearing

The present invention relates to a tensioning device for the drive belt of an electronic component mounter, and in particular, to compensate for the sagging of the belt that transmits power from the driving motor to the cam for controlling the lifting and lowering of a plurality of suction nozzles provided in the head of the electronic component mounter. The present invention relates to a tensioning device for driving belts of an electronic component mounter to improve power transmission efficiency.

In general, an electronic component mounter (chip mounter) is provided with a cam driven by the power of the drive motor, the head is provided with a plurality of operating rods interlocked in accordance with the cam drive each of the electronic components supplied through a predetermined supply line An apparatus for mounting on a circuit board which is adsorbed by an adsorption nozzle provided at an end of an operating rod of a rod and enters a lower end of a head, the conventional electronic component mounter of which a power of the drive motor is transmitted to a cam. As shown, each of the rotation shafts 20 and 30 to which the pulleys 22 and 32 are fixed is provided, and the pulleys 22 and 32 are connected by a belt 40. In addition, the drive motor 10 is provided with a drive pulley 12 fixed to the inside of the belt 40 on the shaft. One of the rotary shafts 30 is provided with several cams 34 (only one is shown for convenience), and a cam follower 34 in contact with each cam 34 and an elevating operation rod 36 connected thereto. Are respectively provided. As the belt 40, an ordinary timing belt is used. Thus, when the driving motor 10 is rotated, the rotating shafts 20 and 30 are rotated by the belt 40, so that a plurality of cams 34 are rotated at the same time, thereby raising and lowering the respective working rods 36. Is done.

However, such a conventional technique causes the belt 40 to relax when used for a long time, resulting in poor power transmission. Accordingly, the lifting amount of the operating rod 36 is changed, so that the adsorption nozzle does not reach the electronic component, so that the adsorption failure occurs. It was. Therefore, a means for compensating for the relaxed state of the belt 40 in the relaxed state is required. In the above-described manner, since the position of the rotating shaft 30 is moved to compensate for the relaxation of the belt, the rotation axis 30 is surrounded. The structure of is also accompanied by the hassle of setting a new, as a result of which the working time is delayed, which is a major factor in reducing productivity.

Accordingly, the present invention has been made in view of the above problems, and its object is to provide a device for adjusting the tension of a drive belt of an electronic component mounter capable of properly compensating the deflection amount when the belt is relaxed to maintain a good power transmission efficiency. .

The purpose of this invention is to move up and down in conjunction with a rotating shaft to which the tension pulley connected by the belt is fixed, a drive motor to which the drive pulley in contact with the inside of the belt is fixed on the shaft, and several cams installed on any one of the rotation shafts. An electronic component mounter having an actuating rod, the tension adjusting means having a tension pulley for joining the belt from the outside to the inside of the belt, the tension adjusting means having a moving hole in the center and on both sides of the moving hole. Fixed plates each having a long hole; A movable plate slidingly contacting the surface of the fixed plate by a fastening bolt and a fastening nut inserted into the long hole; One side is coupled to the tension pulley is screwed to the movable plate and the bearing is coupled to the front of the support shaft that is prevented loosening by the nut, the bracket fixed to the upper end of the fixed plate, the lower end is coupled to the upper end of the movable plate It can be achieved by having a support bolt to prevent movement to the bottom of the.

That is, by adjusting the deflection of the belt by moving the moving plate to the inside as a fastening bolt and tightening the fastening bolt again, the belt tension adjustment is achieved.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. (The same configuration as in the prior art describes the same reference numerals.) FIG. 2 shows a configuration of a preferred embodiment of the present invention. According to this, the rotation shafts 20 and 30 to which the pulleys 22 and 32 are fixed are provided, and the pulleys 22 and 32 are connected by a belt 40. Normal timing belts are used for the belt 40. And the tension adjustment means for pressing the belt 40 to the outside of the belt 40 is provided. At this time, it is preferable that the tension adjusting means is installed at the lower end of the belt 40, where the deflection occurs mainly in the belt.

In addition, the drive motor 10 is provided with a drive pulley 12 fixed to the inside of the belt 40 on the shaft. One of the rotary shafts 30 is provided with several cams 34 (only one is shown for convenience), and a cam follower 34 in contact with each cam 34 and an elevating operation rod 36 connected thereto. Are respectively provided.

As shown in FIG. 3, the tension adjusting means includes a fixing plate 50 formed at a center of the moving hole 52 to be placed in a head frame (not shown) of an electronic component mounting machine (not shown). Long holes 54 are formed on the upper and lower ends of the moving hole 52, respectively. In addition, the movable plate 60 is provided in sliding contact with the surface of the fixed plate 50 by the fastening bolt 54a and the fastening nut 54b inserted into the long hole 54. Therefore, the movable plate 60 will be free to move up and down by loosening the fastening nut (54a).

In addition, one side is provided with a support shaft 62 is screwed to the movable plate 60 and prevented from loosening by a nut 62a, the tension pulley 70 in front of the support shaft 62 is a bearing 72 Are combined. A pin 74 is installed at the end of the support shaft 62 to prevent the tension pulley 70 from being separated. The inside of the pin 74 is preferably interposed with a washer 76 to reduce friction. The nut 62a for fastening the support shaft 62 is accommodated in the movable hole 52 on the fixed plate 50 so as to be movable in the longitudinal direction of the movable hole 52.

On the other hand, the bracket 56 is fixed to the upper end of the fixing plate 50, the screw 56a is fixed, the support bolt 64 and the nut 64a is provided on the bracket 56, and the support bolt 64 It is screwed to the upper end of the movable plate (60). The support bolt 64 is tightened by a nut 64a to move the moving fret 60 due to the deflection force of the belt. In detail, the support bolt 64 moves in a direction perpendicular to the fastening force of the fastening bolt 54a. Will be prevented.

According to the present invention having the configuration as described above, when the driving motor 10 rotates, the rotation shafts 30 and 30 are rotated by the belt 40, and accordingly, the plurality of cams 34 are simultaneously rotated, respectively. When the operating rod 36 rises and falls, the belt 40 due to prolonged use occurs. As shown in FIG. 4, when the fastening nut 54b is released, the movable plate 60 is free. Therefore, at this time, the moving plate 60 is pushed upward to compensate for the deflection of the belt 40 and tightens the fastening nut 54b again, and the nut 64a falling from the bracket 56 in accordance with the rise of the moving plate 60. Tighten to close the bracket 56, the compensation for the deflection of the belt is completed. At this time, the fastening bolt 54a vertically moves in the long hole 54, and the nut 54b is vertically moved in the moving hole 52.

As described above, the driving belt tension control device of the electronic component mounting device according to the present invention is installed to move the plate having a tension pulley selectively with respect to the fixed plate, and to deflect the belt by the tension pulley to compensate for the deflection of the belt This makes it easy to make adjustments to the product, as well as reducing the time required for the adjustment work, which has the effect of improving productivity.

Claims (3)

Rotating shafts 20 and 30 to which the pulleys 22 and 32 connected by the belt 40 are fixed, and a driving motor 10 to which the driving pulley 12 in contact with the inside of the belt 40 is fixed on the shaft. ), And an electronic component mounter having an actuating rod 36 which moves up and down in conjunction with several cams 34 provided on one of the rotating shafts 30, the belt 40 is moved from the outside to the belt 40. Tension control device for the drive belt of the electronic component mounting, characterized in that it is provided with a tension adjusting means having a tension pulley (70) for pressing to the inside. According to claim 1, wherein the tension adjusting means comprises a fixed plate (50) having a long hole (54) formed at both sides of the moving hole (52) and the moving hole (52), respectively; A movable plate 60 in sliding contact with the surface of the fixed plate 50 by the fastening bolt 54a and the fastening nut 54b inserted into the long hole 54; Tension pulley 70 and one end of the fixing plate 50, one side is screwed to the movable plate 60 and the bearing 72 is coupled to the front of the support shaft 62 which is prevented loosening by the nut (62a), It is coupled to the bracket 56 is fixed to the drive belt of the electronic component mounting device characterized in that it is coupled to the upper end of the movable fret at the lower end to support a bolt 64 to prevent movement to the bottom of the movable plate Tension regulator. The device of claim 2, wherein the tension adjusting means is installed outside the lower end of the belt (40).