JPS58202763A - Method and device for controlling fluid pressure in vibratory barrelling machine - Google Patents

Abstract

PURPOSE:To provide optimal working condition continuously for a vibratory barrelling vessel and to enable long time unattended operation of a vibratory barrelling by constructing such that the fluid pressure is controlled at optimal level continuously through a dynamic pressure detector in the barrel tank. CONSTITUTION:A circular vibratory barrel attached to a selector is equipped with a vibrating motor 11 secured with unbalance weights 12, 12a at the opposite ends. Then a signal from a pressure sensor (Unbalance current when a strain gauge is assembled into a bridge) is amplified and A/D converted thereafter compared with the setting level in CPU (Processor section), and if the fluidity is insufficient the rotation of motor is increased while if it is excessive the rotation of motor is controlled by an inverter. With such method, the optimal working condition can be provided continuously for the vibration barrel tank 1 while long time unattended operation of working machine is enabled.

Description

[Detailed Description of the Invention] This invention detects the flow pressure of a mass in a barrel tank and controls the flow pressure to always maintain it at a specified value in a vibrating barrel processing machine, particularly a circle type vibrating barrel processing machine. The present invention relates to a flow pressure control method and device for maintaining proper processing conditions in a barrel tank. The rotational speed of the vibration motor of conventional vibrating barrel processing machines is constant, and no device is included to change it. However, the optimum rotation speed of a vibrating barrel processing machine changes as the type of abrasive stone, compound, workpiece, etc. changes. Therefore, when operating in an unmanned barrel factory or for long periods of unmanned operation, it is necessary to always maintain the rotation speed at an appropriate value.Also, it is necessary to change the weight and advance angle of the unbalanced weights attached above and below the vibration motor. It is possible to control the flow pressure of the mass.However, this type of control has not been carried out until now because a sensor that detects appropriate processing conditions has not been available.However, this invention has not been carried out until now. According to JM, the flow state of the mass in the barrel tank can be detected very easily by inserting a leaf spring or a dynamic pressure detector into the mass and determining the pressure in the mass. Since the fluid pressure is controlled so that it is always at the appropriate value using the sensor, it is possible to always provide the appropriate processing conditions to the vibrating barrel tank, and the vibrating barrel processing machine has succeeded in long-term unattended operation. .

The details of this invention will now be explained with reference to the accompanying drawings. 1 and 1 show an annular vibrating barrel processing machine with a sorting device attached, the inner surface of the processing tank is lined with natural rubber or synthetic resin lining /a, the inner cylinder is covered with a lid /b, In the example shown in Figure 1, the vibration motor //? : An unbalance weight, lco, i2a is fixed to both ends of the rotating shaft, and this vibration motor l/ is attached to the tank 7 flange 13 by tightening the motor receiver/4171 bolt. The processing tank and vibration motor are integrated, and the tank flange is suspended and fixed on the spring 3 on the base 16, and as the single tank rotates, the processing tank and the contents in the tank (workpieces, media compounds, Vibration is applied to a mixture of solutions (hereinafter referred to as mass), and the types of processing include polishing, pulverization, mixing, diffusion, stirring, drying, chemical processing, etc., and any media can be used depending on the processing purpose. There is no problem.

In addition, in this device, a rotating weir tl and a fixed sieve 7 are installed above the processing tank l for sorting, and during processing, the rotating weir t
Lift it upward as shown in b to create a gap between the tip of the rotating weir and the chevron-shaped fixed weir 3.1. The mass freely passes through this gap, but at the end of machining, the rotary weir rotates and its tip contacts the top ridge 3a of the chevron-shaped fixed weir, so the gap is closed and the mass passes above the rotary weir. The medium rises and rises above the fixed sieve 7, and then falls downward and is processed again, and the workpiece is taken out of the thread from the tip of the sieve. Although the sieving equipment on these tanks is not absolutely necessary for this invention, it is convenient when processing workpieces several times in an unattended operation. In addition, in order to increase processing efficiency, a mass flow adjustment lid 6, a guide plate r-rS
ga etc. are included, but these are not necessarily necessary for this invention.

An example of a sensor for detecting flow pressure is shown in FIGS. Figure 3 is leaf spring 2! i, which is inserted perpendicularly to the flow direction in the mass as shown in the figure, and strain gauge 21sa is used to measure the strain of the leaf spring due to the flow pressure of the mass.
, detected with 2Ab. A known technique is used to convert the strain into an electrical signal using a strain gauge. Another example of the sensor is shown in FIG. For example, this sensor is attached to the bottom of the tank as shown in the core, and its structure is a contactor.
A sensor housing 8 fixed to the lower wall of the processing tank l is slidably mounted inside, and its tip is exposed inside the tank as shown in the figure, and the other end is brought into contact with the leaf spring 30. The strain is detected by strain gauges 3/a and 31b. - When using this device, the fluid force is detected by the abrasive stone coming into contact with the tip of the contactor 2g, and since the fluid force is in the form of pulses, the sum of the pulses over a certain period of time is determined using a known technique and defined as the fluid force. do. In the above, we have described a mechanical type sensor for detecting fluid force, but a semiconductor pressure sensor using Pyuceau Electric may also be used (in short, any sensor that can convert fluid force into an electrical signal is fine. A flowchart when controlling the motor rotation speed by fluid force is shown in Fig. 6.As shown in the figure, the signals from the sensors (for example, strain gauge a, 2Ab
Or the unbalanced current when 31a and 31b are assembled into a circuit to the prebb) is amplified and AD converted, and this is sent to the CPU (
If the flow force was insufficient compared to the set value in the Prosensor part), the motor was controlled by an inverter. This can be done using a device. Also, the advance angle of the unbalanced weight is
Applicant 9 of this application:・Patent application Sho Taro/9903
It can be controlled by the device of the invention of No. 1f and Japanese Patent Application No. 57-37g7j.

As described above, according to the present invention, the flow force in the tank of the circle type vibrating barrel processing machine is detected and the processor controls the flow force to maintain the value at a specified value, so that the flow force is always maintained at an appropriate level. It has the advantage of being able to process using fluid pressure.

[Brief explanation of the drawing]

Figure 1 is a front view of an embodiment of the device of this invention;
The same plan view, Figure 3 is the same (partially enlarged sectional view showing the sensor installation, Figure 3 is the same enlarged longitudinal cross-sectional view of section A-B in Figure 3, Figure 3 is the same (other A partially enlarged sectional view of the sensor and FIG. 6 are block diagrams showing the control system of the present invention. l...Processing tank /a...Lining lb...Lid
3... Yamagata fixed weir 3a... Top ridge of Yamagata fixed weir t... Rotating weir + a... Shirt for rotating weir) 4
cb...Rotating weir during machining 6...The main verb of mass
7. Fixed sieve gsga-g dobrate l bar vibration motor! 2, Da... Unbalance weight / 3... Tank 7 lunge / 41... Motor receiver / 3
・・Sufring /6 fist・Base 1q--Cover
/g@・Mass turning direction 2/・・Mass flow direction Co S・・Leaf spring a, 2Ab・・Strain cage 27・・Sensor mounting position M・・Contact 29−・Sensor housing 3θ・・・Leaf spring, 3/a, 3/b/fist strain gauge Patent applicant Shikishima Tipton Co., Ltd. Agent Tadashi Suzuki 5 Figure 6 Procedural amendment 1 issue) August 70, 1981 1, Display of case Showa 1957 patent application No. G2/! ;No. 6 2, Name of invention RakeDoku7. Yaigyoo, Owo 1
．． , Uchi flow pressure control method and device 3, Person making the correction Address: Tokumei Building, 29 Shinanomachi, Shinjuku-ku, Tokyo Showa
Date 6, Subject of amendment (1) "Claims" and "Detailed Description of the Invention" columns in the specification (2) Drawing 2 Contents of amendment (1) Claims amended as shown in the appendix do. (, 2) On line 79 of the specification fragrance page, the phrase "of media compound solution" is corrected to "of media compound solution." (3) Change “Type of processing” from line C on page S of the specification to “
"What kind of processing is it?" he corrected. (ri) On page 7, lines 1 and 2 of the specification, ``Buceau Electricity'' is corrected to ``Piezoelectricity''. (ri) On page 7 RT[,':l of the specification, the word ``cPVJ'' is corrected to ``control device.'' (6) Specification page 7, line 13 [Special application! 1-/! The text "Invention of Patent Application No. 1 Gθ/" has been corrected to read "Invention of Japanese Patent Application No. 56-721902 or Japanese Patent Application No. 1987-721902". (7) On page 7/line 1 of the specification: “And Tokugan Sho!i2-!;
7za 7g No.'' and Bi ``Or Tokugansho!; 7-3'H; 7
I corrected it to ``No. S''. (ffl Figures 1 and 3 are corrected as attached. ? List of attached documents (/1 7 documents stating the scope of correction claims)
-) Corrected drawings (Fig. 71, Fig. 3) 1 Claim: Compare the output signal value of the flow pressure detection sensor installed in the vibrating barrel processing machine with the set value so that both values match. A method of controlling fluid pressure in a vibrating barrel processing machine, which is characterized by controlling the fluid pressure by a processor = The fluid pressure is controlled by changing the frequency of the inverter,
Flow pressure control method in a vibrating barrel processing machine according to claim 7, characterized in that the flow pressure control method is carried out by changing the number of rotations of the vibration motor by 7. The output value of the sensor measures the strain of a leaf spring inserted in the mass. A method for controlling fluid pressure in a vibrating barrel processing machine according to claim 1, characterized in that the output value of a strain gauge obtained by In a vibrating barrel processing machine that processes 1',...1 A sensor for detecting the flow pressure of the mass is installed in the processing tank, and the output of the sensor is connected to the input of a processor that compares the output with a set value and matches the two. A fluid pressure control device S in a vibrating barrel processing machine that performs a vibrating barrel processing device S. A fluid pressure control device S in a vibrating barrel processing machine according to claim 9, wherein the vibration motor is connected to a power source via an inverter. Fluid pressure control device 7 in a vibrating barrel processing machine according to claim 9 or 3, characterized in that the processing machine is of a circle type. Fluid pressure control device ″″′□″1 for a vibrating barrel processing machine according to claim 9, which has a contactor slidably mounted inside a fixed housing.

Claims (1)

[Claims] l The output signal value of a flow pressure detection sensor installed in the vibrating barrel processing machine is compared with a set value, and the flow pressure is controlled by a processor so that both values match. Flow pressure control method in a vibrating barrel processing machine The flow pressure is controlled by changing the frequency of an inverter and changing the rotation speed of a vibration motor. Pressure control method 3 In the vibrating barrel processing machine according to claim 1, wherein the output value of the sensor is the output value of a strain gauge obtained by measuring the strain of a leaf spring inserted in the mass. Flow Pressure Control Method In a vibrating barrel processing machine that installs a vibration motor below a processing tank and processes workpieces in the tank, a sensor that detects the flow pressure of the mass is installed in the processing tank, and the output of the sensor is The fluid pressure control device S for a vibrating barrel processing machine is characterized in that it is connected to the input of a pro sensor that compares the set value and matches the two.The vibration motor is connected to a power source via an inverter. The fluid pressure control device 6 in the vibrating barrel processing machine as set forth in claim 9, characterized in that the vibrating barrel processing machine is of a circle type. Flow pressure control device 7 in a vibrating barrel processing machine, wherein the sensor is a plate spring inserted in the mass or a contactor slidably mounted in a housing fixed to the bottom of the processing machine tank as set forth in claim 1. Fluid pressure control device for vibrating barrel processing machine