JP6113497B2 - Working machine support mechanism - Google Patents

Description

  The present invention relates to a work machine support mechanism that supports a base of a manufacturing work machine on a floor.

  The base of the manufacturing machine is usually supported on the floor by a work machine support mechanism. The work machine support mechanism includes at least three main legs that can adjust the vertical position of the base, and supports the base of the manufacturing machine with the at least three main legs. However, as described in the following patent documents, some work implement support mechanisms include not only main legs but also auxiliary legs that support the base in an auxiliary manner. Some support the base.

JP-A-2-218530

  In the work implement support mechanism described in the above-mentioned patent document, the base is supported by the main leg and the auxiliary leg, so that the rigidity of the support mechanism can be increased. However, it is necessary to adjust the height of not only the main leg but also the auxiliary leg, and the leveling of the base, that is, the work of adjusting the height so that the base is horizontal is a very troublesome work. This invention is made | formed in view of such a situation, and makes it a subject to provide the working machine support mechanism which can perform leveling of a base simply.

In order to solve the above-described problem, a work machine support mechanism according to claim 1 of the present application is a work machine support mechanism that supports a base of a manufacturing work machine on a floor, and is provided at a bottom portion of the base. At least three main legs that can adjust the vertical position of the base, and auxiliary legs that are held slidable in the vertical direction at the bottom of the base , move downward due to their own weight, and contact the floor at the lower end And a lock mechanism capable of fixing the auxiliary leg in a state where the lower end portion of the auxiliary leg is in contact with the floor . The work implement support mechanism according to claim 2 is a work implement support mechanism that supports the base of the manufacturing work implement on the floor, and is provided at the bottom of the base, and adjusts the vertical position of the base. At least three main legs that can be slidable in the vertical direction at the bottom of the base, moved downward by the elastic force of a spring, and contacted to the floor at the lower end, the auxiliary legs And a lock mechanism capable of fixing the auxiliary leg in a state in which the lower end portion is in contact with the floor.

According to a third aspect of the present invention, there is provided the work implement support mechanism according to the first or second aspect , further comprising a moving mechanism that moves the auxiliary leg upward.

A work implement support mechanism according to a fourth aspect is the work implement support mechanism according to any one of the first to third aspects, wherein the work implement support mechanism is formed at a bottom portion of the base, and the auxiliary leg is moved vertically. It is characterized by having a spare holding hole for slidably holding.

In the work machine support mechanism according to the first aspect, the auxiliary leg is held slidable in the vertical direction at the bottom of the base. Thereby, it is possible to adjust the height of the auxiliary leg simply by sliding the auxiliary leg. Therefore, according to the working machine support mechanism of the first aspect, the base can be easily leveled. In the work implement support mechanism according to the first aspect, the auxiliary leg moves downward due to its own weight and contacts the floor at the lower end. That is, the height of the auxiliary leg is adjusted by natural fall. This makes it possible to level the base very quickly and easily. Furthermore, in the work machine support mechanism according to the first aspect, the auxiliary leg is fixed by the lock mechanism. Thereby, it becomes possible to increase the rigidity of the auxiliary leg by locking the auxiliary leg in contact with the floor by the lock mechanism.

In the work implement support mechanism according to the third aspect , the auxiliary leg is moved upward by the moving mechanism. That is, the auxiliary leg can be separated from the floor by the moving mechanism. As a result, the auxiliary legs can be easily accommodated, and the utility is improved.

In the work machine support mechanism according to the fourth aspect , a spare holding hole for holding the auxiliary leg so as to be slidable in the vertical direction is formed in the bottom portion of the base. This makes it possible to easily add auxiliary legs and increase the rigidity.

It is the schematic which shows the electronic component mounting machine supported by the working machine support mechanism which is an Example of this invention. It is a top view which shows the electronic component mounting machine shown in FIG. 1 in the viewpoint from upper direction. It is a perspective view which shows the main leg and auxiliary leg which comprise a working machine support mechanism. It is a side view which shows the auxiliary leg of the state spaced apart from the floor. It is a side view which shows the auxiliary leg of the state contacted to the floor. It is a side view which shows the auxiliary leg of the modification 1 of the state spaced apart from the floor. It is a side view which shows the auxiliary leg of the modification 1 of the state contact | connected to the floor. It is a side view which shows the auxiliary leg of the modification 2 of the state spaced apart from the floor. It is a side view which shows the auxiliary leg of the modification 2 of the state contact | connected to the floor.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments and modifications of the present invention will be described in detail with reference to the drawings as modes for carrying out the present invention.

<Example>
FIG. 1 shows a working machine support mechanism 10 according to an embodiment of the present invention. The work machine support mechanism 10 is a mechanism for supporting the base 14 of the electronic component mounting machine 12 on the floor. On the base 14 of the electronic component mounting machine 12, as shown in FIG. 2, a conveying device 20, a mounting head moving device (hereinafter sometimes abbreviated as “moving device”) 22, a mounting head 24, and a supply A device 26 is provided.

  The conveyance device 20 includes a pair of conveyor belts 30 extending in the X-axis direction and an electromagnetic motor (not shown) that rotates the conveyor belt 30. The circuit board 34 is supported by the pair of conveyor belts 30 and is conveyed in the X-axis direction by driving an electromagnetic motor. Further, the transfer device 20 has a substrate holding device (not shown). The substrate holding device fixedly holds the circuit board 34 supported by the conveyor belt 30 at a predetermined position (a position where the circuit board 34 in FIG. 1 is illustrated).

  The moving device 22 includes an X-axis direction slide mechanism 50 and a Y-axis direction slide mechanism 52. The X-axis direction slide mechanism 50 has an X-axis slider 56 provided on the base 14 so as to be movable in the X-axis direction. The X-axis slider 56 moves to an arbitrary position in the X-axis direction by driving an electromagnetic motor (not shown). The Y-axis direction slide mechanism 52 has a Y-axis slider 60 provided on the side surface of the X-axis slider 56 so as to be movable in the Y-axis direction. The Y-axis slider 60 moves to an arbitrary position in the Y-axis direction by driving an electromagnetic motor (not shown). The mounting head 24 is attached to the Y-axis slider 60. With such a structure, the mounting head 24 is moved to an arbitrary position on the base 14 by the moving device 22.

  The mounting head 24 mounts electronic components on a circuit board. The mounting head 24 has a suction nozzle 62 provided on the lower end surface. The suction nozzle 62 communicates with a positive / negative pressure supply device (not shown) via negative pressure air and positive pressure air passages. The suction nozzle 62 sucks and holds the electronic component with a negative pressure, and releases the held electronic component with a positive pressure.

  The supply device 26 is a feeder-type supply device and includes a plurality of tape feeders 66. The tape feeder 66 accommodates the taped component in a wound state. The taped component is a taped electronic component. Then, the tape feeder 66 sends out the taped parts by a feeding device (not shown). Thereby, the tape feeder 66 supplies an electronic component in a supply position by sending out a taped component.

  The work implement support mechanism 10 that supports the base 14 includes four main legs 70 and a plurality of auxiliary legs 72, as shown in FIG. Each of the four main legs 70 is a screw-type support leg, and is disposed at each corner of the bottom of the base 14. The height of the main leg 70 can be adjusted by screw adjustment, and the four main legs 70 are adjusted so that the base 14 is horizontal.

  The auxiliary leg 72 supports the base 14 in an auxiliary manner, and includes a leg portion 74, an elevating mechanism 76, and a solenoid 78 as shown in FIGS. 3 and 4. The legs 74 are generally rod-shaped and are suspended by an elevating mechanism 76 so as to be movable in the vertical direction. Specifically, the lifting mechanism 76 includes a wire 80, a pulley 82, and a winding rod 84. The wire 80 is fixed to the upper end of the leg 74 at one end, and the leg 74 is suspended. The wire 80 extends upward from the upper end of the leg 74 and is engaged with the pulley 82. The wire 80 extends downward from the pulley 82 and is fixed to the winding rod 84 at the other end. The winding rod 84 is held by the base 14 so as to be rotatable around its axis. A handle 86 is attached to one end of the winding rod 84, and the wire 80 is wound around the winding rod 84 by operating the handle 86. Thereby, the leg part 74 suspended from the wire 80 moves upward. On the other hand, when the handle 86 is not operated, the leg 74 moves downward due to its own weight.

  A through hole 90 is formed in the bottom 88 of the base 14 so as to correspond to the leg 74. The inner dimension of the through hole 90 is slightly larger than the circumferential dimension of the leg part 74, and the leg part 74 is inserted into the through hole 90. A metal seal (not shown) is interposed between the through hole 90 and the leg portion 74. With such a structure, the leg portion 74 also has the effect of a metal seal, and although the contact area of the sliding portion is large, the leg portion 74 is held at the bottom portion 88 of the base 14 so as to be smoothly slidable in the vertical direction. .

  Further, the solenoid 78 is fixed to the upper surface of the bottom portion 88 in a sideways state, and the tip end portion of the plunger 96 of the solenoid 78 faces the side surface of the leg portion 74. A pressing member 98 is fixed to the distal end portion of the plunger 96. The solenoid 78 increases the amount of protrusion of the plunger 96 in the demagnetized state. In the solenoid 78 in the demagnetized state, the pressing member 98 contacts the side surface of the leg portion 74. On the other hand, in the excited solenoid 78, the protrusion amount of the plunger 96 is reduced, and the pressing member 98 is separated from the side surface of the leg portion 74. Incidentally, FIG. 4 shows a solenoid 78 in an excited state, and FIG. 5 shows a solenoid 78 in a demagnetized state.

  With the above-described structure, the work implement support mechanism 10 can easily adjust the level of the base 14, that is, the height of the main leg 70 and the auxiliary leg 72 so that the base 14 is horizontal. Specifically, when the electronic component mounting machine 12 is disposed on the floor, first, the heights of the four main legs 70 are adjusted so that the base 14 is horizontal. Since the adjustment method of the screw-type support leg is a known technique, description thereof is omitted.

  When the height adjustment of the four main legs 70 is completed, the height adjustment of the leg portions 74 of the auxiliary legs 72 is performed. The leg 74 is suspended in the air before the height of the leg 74 is adjusted, and is not in contact with the floor. That is, the leg portion 74 is suspended in the air as shown in FIG. 4 by winding the wire 80 on the winding rod 84 by operating the handle 86. Incidentally, when the handle 86 is operated, the solenoid 78 is in an excited state, and the pressing member 98 is not in contact with the side surface of the leg portion 74. Then, after the leg portion 74 is suspended in the air by operating the handle 86, the solenoid 78 is demagnetized. As a result, the pressing member 98 contacts the side surface of the leg portion 74 suspended in the air, and the leg portion 74 is locked at that position. That is, before the height of the leg 74 is adjusted, the leg 74 is locked in a state of being separated from the floor.

  When the height of the leg portion 74 is adjusted, the solenoid 78 is brought into an excited state with the leg portion 74 being separated from the floor. That is, the pressing member 98 is separated from the leg portion 74 suspended in the air, and the leg portion 74 moves downward due to its own weight. Thereby, the lower end part of the leg part 74 contacts a floor, as shown in FIG. At this time, even if the floor has unevenness, the protruding amount of the leg 74 is naturally determined by gravity according to the unevenness.

  And if the lower end part of the leg part 74 contacts a floor, the solenoid 78 will be in a demagnetization state. That is, the pressing member 98 contacts the side surface of the leg portion 74 in contact with the floor, and the leg portion 74 is locked at that position. Thereby, the height adjustment of the auxiliary leg 72 is completed, and the base 14 is supported by the main leg 70 and the auxiliary leg 72.

  As described above, the auxiliary leg 72 can be adjusted in height simply by dropping the suspended leg 74 and locking the dropped leg 74 with the solenoid 78. In the conventional work machine support mechanism, not only the main leg but also the auxiliary leg is a screw-type support leg, and the leveling of the base 14 is a troublesome work. However, in the work implement support mechanism 10, the main leg 70 is a screw-type support leg. However, as described above, the height of the auxiliary leg 72 can be adjusted by a very simple operation. is there. Therefore, according to the work implement support mechanism 10, the base 14 can be leveled very quickly and easily.

  Further, in the work implement support mechanism 10, since many auxiliary legs 72 can be adjusted together, it is possible to arrange many auxiliary legs 72. That is, the large number of auxiliary legs 72 can increase the rigidity of the work implement support mechanism 10 and can reduce the rigidity of the main leg 70 to some extent. For this reason, the diameter of the threaded portion of the main leg 70 can be reduced, and the height adjustment of the main leg 70 is facilitated.

Furthermore, it is possible to suppress the vibration of the electronic component mounting machine 12 by employing many auxiliary legs 72 and increasing the rigidity of the work machine support mechanism 10. Specifically, the natural frequency f of the electronic component mounting machine 12 having the four main legs 70 is calculated according to the following equation.
f = 1 / 2π√ {(4K + Nk) / m}
Here, K is the spring constant of the main leg 70, and k is the spring constant of the auxiliary leg 72. N is the number of auxiliary legs 72, and m is the load of the electronic component mounting machine 12.

  The natural frequency f is a frequency that causes resonance. If the number N of the auxiliary legs 72 is increased, the natural frequency f increases, and the control gain of the electronic component mounting machine 12 can be increased. Components can be mounted.

  Further, from the viewpoint of the natural frequency f, even if the leg portion 74 is not locked by the solenoid 78, a certain effect of vibration suppression can be expected. Specifically, when the solenoid 78 is excited in a state where the lower end portion of the leg portion 74 is in contact with the floor, the leg portion 74 is held by the through hole 90 so as to be slidable in the vertical direction. At this time, since the metal seal is inserted between the leg 74 and the through hole 90, the leg 74 is held in a certain contact area. For this reason, although the value of the spring constant k of the auxiliary leg 72 is small, it has a certain value, and the natural frequency becomes somewhat high. Therefore, even if the leg portion 74 is not locked by the solenoid 78, the vibration can be suppressed to some extent.

  Furthermore, in the work implement support mechanism 10, the auxiliary legs 72 can be added, and the rigidity, natural frequency, and the like can be increased. Specifically, as shown in FIGS. 4 and 5, a through hole 100 is formed in the bottom 88 of the base 14. The through hole 100 has the same shape as the through hole 90 into which the leg portion 74 is inserted, and the leg portion 74 can be inserted therein. That is, the auxiliary leg 72 can be easily added by providing the leg 74, the solenoid 78, etc. corresponding to the through hole 100. In other words, as various means for solving the mechanical rigidity of each manufacturing work machine, the control gain such as the acceleration / deceleration of the motor accompanying the operation of the manufacturing work machine, that is, the means for high-efficiency production and weight reduction of the work machine The auxiliary legs 72 can be easily added according to the static rigidity and dynamic rigidity of the manufacturing machine.

<Modification 1>
In the above-described embodiment, the vertical position of the leg portion 74 is locked by the solenoid 78, but the vertical position of the leg portion 74 can be locked by a different mechanism. 6 and 7 show an auxiliary leg 110 that can lock the position of the leg 74 in the vertical direction by a mechanism different from the solenoid. Since the auxiliary leg 110 has the same configuration as that of the auxiliary leg 72 of the embodiment except for the lock mechanism 112, the same reference numerals are used for the components having the same functions as the auxiliary leg 72, and the description is omitted or simplified. Do.

  The lock mechanism 112 includes a support base 114 and a fixing screw 116. The support base 114 is erected on the bottom portion 88 of the base 14 so as to face the side surface of the leg portion 74. A screw hole 118 is formed in the support base 114, and a fixing screw 116 is screwed into the screw hole 118. The distal end portion of the fixing screw 116 protrudes from the side surface of the support base 114 toward the side surface of the leg portion 74. Then, the operator rotates the fixing screw 116 around the axis, so that the distal end portion of the fixing screw 116 approaches and separates from the side surface of the leg portion 74.

  With such a structure, in the auxiliary leg 110, as shown in FIG. 6, the fixing screw 116 is adjusted so that the distal end portion of the fixing screw 116 is separated from the side surface of the leg portion 74. It will be in a state where it can slide vertically. On the other hand, the fixing screw 116 is adjusted so that the tip of the fixing screw 116 contacts the side surface of the leg 74, whereby the vertical position of the leg 74 is locked. That is, as shown in FIG. 7, in the state where the leg portion 74 is in contact with the floor due to its own weight, the base 14 is brought into contact with the side surface of the leg portion 74 so that the base 14 is connected to the main leg 70 and the auxiliary leg. 110. In addition, in the auxiliary leg 110, it is possible to firmly lock the leg portion 74 by tightening the fixing screw 116 strongly, and it is possible to increase the rigidity of the auxiliary leg 72.

<Modification 2>
In the embodiment and the first modification, the leg portion 74 is held so as to be slidable in the vertical direction and the leg portion 74 is in contact with the floor. However, a solenoid plunger may be employed as the leg portion. An auxiliary leg 120 that employs a plunger as a leg is shown in FIGS.

  The auxiliary leg 120 is configured by a solenoid 122. The solenoid 122 includes a plunger 124, a spring 126, a coil 128, and a casing 130. The solenoid 122 is fixed to the bottom portion 88 with the distal end portion of the plunger 124 being inserted into the through hole 90 of the bottom portion 88. In the demagnetized state, the plunger 124 protrudes from the casing 130 by the elastic force of the spring 126 as shown in FIG. Accordingly, the plunger 124 protrudes downward through the through hole 90 and comes into contact with the floor.

  On the other hand, in the solenoid 122 in the excited state, the plunger 124 moves upward against the elastic force of the spring 126 as shown in FIG. As described above, when the solenoid 122 is energized, the plunger 124 is separated from the floor, and when the solenoid 122 is demagnetized, the base 14 is supported by the main leg 70 and the auxiliary leg 120. .

  Incidentally, in the above-described embodiments and modifications, the work implement support mechanism 10 is an example of a work implement support mechanism. The electronic component mounting machine 12 is an example of a manufacturing work machine. The base 14 is an example of a base. The main leg 70 is an example of a main leg. The auxiliary legs 72, 110, and 120 are examples of auxiliary legs. The elevating mechanism 76 and the coil 128 are an example of a moving mechanism. The solenoid 78, the lock mechanism 112, and the spring 126 are an example of a lock mechanism. The through hole 100 is an example of a holding hole.

  In addition, this invention is not limited to the said Example and modification, It is possible to implement in the various aspect which gave various change and improvement based on the knowledge of those skilled in the art. Specifically, for example, in the above embodiment, four main legs 70 are arranged on the bottom 88 of the base 14, but three or five or more main legs 70 may be arranged. That is, the base 14 can be leveled by providing at least three main legs 70.

10: Working machine support mechanism 12: Electronic component mounting machine (manufacturing work machine) 14: Base 70: Main leg 72: Auxiliary leg 76: Lifting mechanism (moving mechanism) 78: Solenoid (locking mechanism) 100: Through hole (holding hole) 110: Auxiliary leg 112: Locking mechanism
120: Auxiliary leg 126: Spring (locking mechanism) 128: Coil (moving mechanism)

Claims (4)

A work machine support mechanism for supporting a base of a manufacturing work machine on a floor,
The work machine support mechanism is
At least three main legs provided at the bottom of the base and capable of adjusting the vertical position of the base;
An auxiliary leg that is slidable in the vertical direction at the bottom of the base , moves downward by its own weight, and contacts the floor at the lower end ;
A work machine support mechanism comprising: a lock mechanism capable of fixing the auxiliary leg in a state where a lower end portion of the auxiliary leg is in contact with a floor .   A work machine support mechanism for supporting a base of a manufacturing work machine on a floor,
  The work machine support mechanism is
  At least three main legs provided at the bottom of the base and capable of adjusting the vertical position of the base;
  An auxiliary leg that is slidable in the vertical direction at the bottom of the base, moves downward by the elastic force of the spring, and contacts the floor at the lower end;
  A lock mechanism capable of fixing the auxiliary leg in a state where the lower end of the auxiliary leg is in contact with the floor;
  A working machine support mechanism comprising: The work machine support mechanism is
Working machine supporting mechanism according to claim 1 or claim 2, characterized in that it comprises a moving mechanism for moving the support jack upwards. The work machine support mechanism is
The work machine according to any one of claims 1 to 3 , further comprising a spare holding hole formed on a bottom portion of the base and configured to hold the auxiliary leg so as to be slidable in the vertical direction. Support mechanism.

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