JPH0561109U - Magazine rack storage width automatic adjustment system - Google Patents

Abstract

(57) [Summary] [Purpose] In various work processes that use magazine racks that store plate-like articles such as printed wiring boards, the storage width adjustment or confirmation work is automatically performed without manpower. In order to dramatically improve the work efficiency of the entire work process using the system by constructing a system to provide a compact, economical and highly practical magazine rack storage width automatic adjustment system as a whole. Is. [Structure] A magazine rack for storing plate-shaped articles such as printed wiring boards, a measuring device for measuring the storage width of the magazine rack using a sensor, and a calculation for processing, calculating, and analyzing the measured values of the device. It is composed of a device and a drive control device which drives a drive part of the magazine rack to arbitrarily set or change the storage width of the magazine rack.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is a storage width of a magazine rack used for temporarily storing or storing the articles in various work steps in order not to assemble and process thin plate-like articles such as printed wiring boards. It relates to a system that automatically adjusts.

[0002]

[Prior Art]

 Conventionally, various magazine racks for storing printed wiring boards and the like have been put on the market with a mechanism capable of adjusting the storage width, but the method is manually operated directly on the moving side plate that determines the storage width. The most common method is to move the moving side plate by applying an appropriate force.In this method, a fixing mechanism or screw tightening mechanism is used to prevent the storage width after adjustment from shifting during subsequent use. Had to be used to fix the moving side plate. In addition, in the system that automatically adjusts the storage width of the magazine rack, since it is premised on the use of the magazine rack as described above, it is inevitable that the system as a whole will become large, and its economic efficiency and practicality are extremely high. It was low. On the other hand, the magazine rack has a drive section to which external power is applied at one point, and by applying rotational power to the same section, the moving side plate can be easily and accurately moved to adjust the storage width. However, there is no need to perform a special work to fix the moving side plate after the movement (for example, Japanese Patent Application No. 2-64421, Japanese Patent Application No. 2-120272, and Japanese Patent Application No. 3-61244).

[0003]

[Problems to be solved by the device]

 In the former magazine rack among those described in the prior art, the storage width is adjusted by direct manual work on the moving side plate, so the final fine adjustment after moving the moving side plate to the vicinity of the target position. However, in some cases one worker is holding the storage box and one person is now adjusting the width, which requires a considerable amount of work. Furthermore, if it is necessary to frequently insert an empty magazine rack in the component mounting line of a printed wiring board, the above-mentioned artificial adjustment or confirmation work must be performed every time the magazine rack is inserted. The reality is that the work load on the entire process will be extremely high. In addition, the construction of an automatic storage width adjustment system based on the use of this type of magazine rack is technically very complicated and unavoidably large, and is economically very expensive. Its practicality had to be very poor. The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to use a magazine rack having a function such as the latter described in the prior art to store the storage width. This system is used by constructing a system by connecting various devices without adding various devices in order to automatically control the adjustment work, and providing a compact, economical and highly practical storage width automatic adjustment system as a whole system. It is intended to dramatically increase the efficiency of the entire work process.

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, the system for automatically adjusting the storage width of a magazine rack according to the present invention uses a sensor to measure the positions of a magazine rack that stores plate-like articles such as printed wiring boards and the movable side plate of the magazine rack. A measuring device, a computing device that processes, computes, and analyzes the measured values measured by the device, and a drive control device that drives the magazine rack drive unit to arbitrarily set or change the magazine rack storage width. It is composed of

[0005]

【Example】

 Next, the present invention will be described with reference to the accompanying drawings showing an embodiment thereof. 7 to 8, the magazine rack used in the system of the present invention has the following mechanism. The rotation power applied to the large sprocket 2 located at the center of the fixed plate 1 and serving as a drive unit that receives the power from the outside at one point is the ladder chain 3, the small sprocket 4, and the rotation shaft 8. After that, the side portion is transmitted as power for horizontally moving the moving unit 7 fitted on the convex portion of the guide rail 6 on the guide rail 6. In addition, a columnar protrusion is formed at a right angle to the guide rail 6 in the center of the surface of the moving unit 7, and the protrusion is fitted inside the main column 9, so that one surface of the main column 9 is covered. The fixed moving side plate 5 moves horizontally in conjunction with the horizontal movement of the moving unit 7 on the guide rail 6. Further, since the contact surface between the rotary shaft 8 and the moving unit 7 is screwed by the threads of both, the moving side plate 5 is brought into a fixed stop state at the same time when the rotary motion of the large sprocket 2 is stopped. Next, a mechanism for automatically adjusting the storage width of the magazine rack will be described. 1 to 5, when the magazine rack is carried into a predetermined position in front of the measuring device 20, the optical sensor moving motor 10 forming a part of the measuring device 20 starts to rotate, and the driving shaft of the motor is started. The rotating shaft 18 to be connected starts to rotate. At this time, the rotary shaft 18 penetrates the inner hole, and the screw thread cut on the surface of the inner hole and the screw thread cut on the surface of the rotary shaft 18 are screwed together, and further the side surface of the guide rail 16 is formed. The moving unit 17, which is fitted with the convex portion, starts moving in the direction of the changeover switch 19 by the rotation of the rotary shaft 18. At the same time, the slit plate 14 is rotated so that its inner hole is formed around the outer periphery of the drive shaft of the optical sensor moving motor 10 and the light of the optical sensor 11 passes through the slit formed on the surface. The rotation of the slit plate 14 is transmitted to the arithmetic unit 21 as a pulse signal. In FIG. 2, when the moving unit 17 reaches the front of one side surface of the moving side plate 5 of the magazine rack and the optical sensor 15 fixed to the upper part of the moving unit 17 detects the moving side plate 5, the arithmetic unit 21 causes the moving unit 17 to move. The number of pulses corresponding to the number of rotations of the slit plate 14 from the start of movement to the above-mentioned sensing time is recorded or stored, and the distance traveled by the mobile unit 17 is calculated based on the number of pulses and the calculation result is recorded. Remember. At this point, the optical sensor 15 is automatically turned off. 3 to 5, the moving unit 17 continues to move on the guide rail 16 even after the optical sensor 15 detects the moving side plate 5, and the side surface of the moving unit 17 on the side of the changeover switch 19 is the changeover switch 19. The switch bar is pressed down and the switching switch 19 is moved to a position where it is turned on. When the changeover switch 19 is turned on, the optical sensor moving motor 10 starts rotating in the opposite direction to the rotation that has been performed up to that point, and the moving unit 17 starts moving in the direction of the optical sensor moving motor 10. In FIG. 5, when the moving unit 17 reaches the front of the deceleration switch 13, first, the side portion of the moving unit 17 on the deceleration switch 13 side depresses the switch bar of the deceleration switch 13 to turn on the deceleration switch 13, and at the same time. The rotation speed of the optical sensor moving motor 10 decreases, and the moving speed of the moving unit 17 decreases. In FIG. 5, when the moving unit 17 continues to move toward the optical sensor moving motor 10 even after the moving speed decreases and reaches the front of the motor switch 12, when the moving unit 17 moves to the optical sensor moving motor 10 side. The side surface presses down the switch bar of the motor switch 12 to switch the motor switch 12 to the off state, stop the rotation of the optical sensor moving motor 10 and stop the movement of the moving unit 17. After the movement of the moving unit 17 is stopped, the arithmetic unit 21 records or registers the moving distance of the moving unit 17 which is recorded or stored at the time when the optical sensor 15 detects the moving side plate 5 and the arithmetic unit 21 in advance. If a difference is found between the two, the drive control device is driven as follows to correct the difference. 4 to 6, the arithmetic unit 21 first rotates the moving motor 22 which is a part of the drive control unit and is fixed independently of the moving frame 23. At the tip of the drive shaft of the moving motor 22, a gear 27, whose peripheral surface is screwed into a rack gear 26 fixed on the lower side plate of the moving frame 23, is fixed. Moves on the moving rail 25 toward the magazine rack. By this movement, the tip of the drive shaft of the drive motor 24 fixed to the upper part of the moving frame 23 is fitted into the inner hole of the large-sized sprocket 2 of the magazine rack. After the tip of the drive shaft of the drive motor 24 is fitted into the inner hole of the large sprocket 2, the arithmetic unit 21 rotates the drive motor 24 by the required number of rotations in the necessary direction to adjust the above difference, and the moving side plate 5 is moved. To move. When the movable side plate 5 reaches the adjusted position, the rotation of the drive motor 24 is stopped, and the arithmetic unit 21 rotates the movable motor 22 again to move the movable frame 23 in the direction opposite to the magazine rack. By this operation, the tip of the drive shaft of the drive motor 24 is inserted into and removed from the inner hole of the large sprocket 2. Although one embodiment has been described with reference to the drawings, the present invention is not limited to the above embodiment, and various modifications may be made within the scope of the claims. Is something that can be done. For example, supply of magazine racks to a line process that uses this system and unloading of magazine racks from a line process that uses this system are performed using a transport control system such as an automated guided vehicle. By linking this system, it is possible to automatically control the magazine rack over a wider area. Furthermore, in addition to the above-mentioned linkage, the function to check, one by one, whether or not the width of the printed wiring board before loading into the magazine rack matches the storage width of the magazine rack after adjustment using the measuring device of the present invention If the printed wiring board automatic loading system having the above is further linked, all the operations related to the magazine rack in the line process can be performed completely automatically. On the other hand, by recording or registering multiple distances in the arithmetic unit in advance and coding them, the width of the printed wiring board that had been inserted until then due to setup change and the size of it to be inserted after that. If they are different, it is possible to add a function to select from the above codes one by one and change and set the conditions.

[0006]

[Effect of the device]

 Since the present invention is configured as described above, it has the following effects. First, in the line process of mounting chip components on the printed wiring board, even if a magazine rack with any storage width is prepared to temporarily store or store the printed wiring boards before and after mounting, that line Since the delivery width can be automatically adjusted or checked one by one before it is put into the machine, it is possible to completely eliminate the manpower involved in the work, resulting in a dramatic improvement in the work efficiency of the entire line process. .. Secondly, by linking this system with a transportation control system that uses an automated guided vehicle and a system that automatically inserts a printed wiring board before mounting into a magazine rack, the magazine rack in the above mounting line process It becomes possible to fully automate all the work related to.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a system showing the operation of main parts.

FIG. 2 is a schematic diagram of a system showing the operation of main parts.

FIG. 3 is a schematic diagram of a system showing the operation of main parts.

FIG. 4 is a schematic diagram of a system showing the operation of main parts.

FIG. 5 is a perspective view of the measuring device.

FIG. 6 is a side view of a drive control device with a part thereof seen through.

FIG. 7 is a perspective view of a main part of a magazine rack.

FIG. 8 is a cross-sectional view of a main part of a magazine rack with a part seen through.

[Explanation of symbols]

 1 Fixed Plate 2 Large Sprocket 3 Ladder Chain 4 Small Sprocket 5 Moving Side Plate 6 Guide Rail 7 Moving Unit 8 Rotating Axis 9 Main Pillar 10 Optical Sensor Moving Motor 11 Optical Sensor 12 Motor Switch 13 Decelerating Switch 14 Slit Plate 15 Optical Sensor 16 Guide Rail 17 Moving unit 18 Rotating shaft 19 Changeover switch 20 Measuring device 21 Computing device 22 Moving motor 23 Moving frame 24 Drive motor 25 Moving rail 26 Rack gear 27 Gear

Claims (3)

[Scope of utility model registration request] 1. A magazine rack for accommodating plate-shaped articles such as printed wiring boards, a measuring device for measuring the position of a moving side plate of the magazine rack by using a sensor, and processing and calculation of measured values measured by the device. An automatic magazine rack storage width adjusting system comprising: an arithmetic unit for analysis; and a drive control device that drives a drive unit of the magazine rack to arbitrarily set or change the storage width of the magazine rack. 2. The measuring device as set forth above, wherein the rotary shaft passes through the inner hole of the rotary shaft, and the thread cut on the surface of the rotary shaft is screwed into the thread cut on the surface of the rotary shaft, and the side surface thereof is guided. It has a mechanism to measure the distance between the moving side plate and the fixed plate of the magazine rack by moving the sensor fixed on the moving unit by horizontally moving the moving unit that fits with the convex portion of the rail on the guide rail. The automatic magazine rack storage width adjustment system according to claim 1, further comprising: 3. In the magazine rack, power from the drive control unit is applied to the drive unit only at one point, and a screw thread is cut on the surface of the inner hole through which the rotary shaft penetrates. And a screw thread cut on the surface of the rotary shaft are screwed together, and the side surface of the moving unit is fitted with the convex portion of the guide rail.The moving unit is moved horizontally by moving the moving side plate on the guide rail. Having
The magazi rack automatic storage width adjusting system according to claim 1 or 2, further characterized in that it is not necessary to perform a special operation to fix the moving side plate after moving the moving side plate.