An interlocking control circuit for an automatic ball adding machine

Abstract

The present invention provides an interlock control circuit for an automatic ball adding machine, comprising a circuit breaker KF1, a main contact of a contactor KM1, a main contact of a contactor KM2, a main contact of a contactor KM3, a thermal element of a thermal relay FR1, a thermal element of a thermal relay FR2, a vibration motor M1, a ball feeding motor M2, a start button SB1, a stop button SB1, an auxiliary normally open contact of the contactor KM1, a coil of the contactor KM1, a ball bin photoelectric switch SQP1, a ball lane photoelectric switch SQP2, an auxiliary normally closed contact of the thermal relay FR1, an auxiliary normally closed contact of the contactor KM2, a coil of the contactor KM2, an auxiliary normally closed contact of the contactor KM3, a coil of the contactor KM3, a coil of a time relay KT1, and a normally closed contact of a steel ball counting travel switch SQ1. The circuit control of the present invention is simple, maintenance is easy for maintenance personnel, and automatic control of the ball adding machine can be achieved, effectively avoiding ball jamming, ball blocking, ball loss, and inaccurate steel ball counting.

Description

Technical Field

[0001] The invention relates to the technical field of ball adding control of a ball mill, in particular to an interlocking control circuit of an automatic ball adding machine. Background Art

[0002] Ball mills are widely used in industrial production. They utilize the impact of steel balls to crush materials. While impacting and crushing the material, the steel balls also perform a grinding function. Therefore, during grinding operations, the ball mill must be replenished with steel balls regularly, quantitatively, and proportionally to maintain the mill's fill rate and ball diameter ratio within the required range, thereby ensuring efficient and low-consumption operation.

[0003] Reasonable ball adding is one of the important ways to improve the production performance of ball mill. In actual operation, most of the time, the traditional manual ball adding method is adopted. This method is not only labor-intensive, but also has poor ball ratio and is difficult to achieve timing and quantity, which affects the performance of the ball mill.

[0004] In recent years, numerous ball-adding devices have been invented. Patent CN2801283 describes an automatic ball-adding machine, but its drawbacks include a complex structure and limited application. Patent CN2091807428U describes a ball-adding machine with a turntable structure, using ball-detection holes on the turntable to move balls to the ball outlet trough. Patent CN2595453 uses a group of fingers on the surface of a roller to push balls through the roller and into the ball outlet trough. However, the ball-adding machines described in these patents use a funnel or dial wheel structure, which lacks automatic control and is prone to ball jamming, blockage, ball loss, and inaccurate ball counting, thus affecting ball mill production. Summary of the Invention

[0005] (1) Technical problems solved

[0006] Aiming at the defect that the existing ball adding equipment cannot realize automatic control, the present invention provides an interlocking control circuit of an automatic ball adding machine.

[0007] (2) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] An interlocking control circuit for an automatic ball adding machine includes a main circuit, wherein the main circuit includes three-phase power supplies L1, L2, and L3, a circuit breaker KF1, a main contact of a contactor KM1, a main contact of a contactor KM2, a main contact of a contactor KM3, a thermal element of a thermal relay FR1, a thermal element of a thermal relay FR2, a vibration motor M1, and a ball feeding motor M2;

[0010] The output ends of the three-phase power supplies L1, L2, and L3 are respectively connected to the input ends of the circuit breaker KF1, the output end of the circuit breaker KF1 is connected to the main contact input end of the contactor KM1, the main contact output end of the contactor KM1 is respectively connected to the main contact input end of the contactor KM2 and the main contact input end of the contactor KM3, the main contact output end of the contactor KM2 is connected to the thermal element input end of the thermal relay FR1, the thermal element output end of the thermal relay FR1 is connected to the three-phase stator winding of the vibration motor M1, the main contact output end of the contactor KM3 is connected to the thermal element input end of the thermal relay FR2, and the thermal element output end of the thermal relay FR2 is connected to the three-phase stator winding of the ball feeding motor M2.

[0011] According to one embodiment of the present invention, the control circuit further includes power supplies L1 and L2, a start button SB1, a stop button SB1, an auxiliary normally open contact of a contactor KM1, a coil of the contactor KM1, a ball chamber photoelectric switch SQP1, a ball lane photoelectric switch SQP2, an auxiliary normally closed contact of a thermal relay FR1, an auxiliary normally closed contact of a contactor KM2, a coil of the contactor KM2, an auxiliary normally closed contact of a contactor KM3, a coil of the contactor KM3, a coil of the time relay KT1, a delayed closing normally open contact of the time relay KT1, an auxiliary normally closed contact of the thermal relay FR2, and a normally closed contact of the steel ball counting stroke switch SQ1;

[0012] One end of the power supply L1 is connected to one end of the stop button SB1, the other end of the stop button SB1 is connected to one end of the start button SB2 and one end of the auxiliary normally open contact of the contactor KM1, the other end of the start button SB2 and the other end of the auxiliary normally open contact of the contactor KM1 are connected to one end of the contactor KM1 coil, and the other end of the contactor KM1 coil is connected to one end of the power supply L2;

[0013] One end of the power supply L1 is also connected to one end of the auxiliary normally closed contact of the contactor KM3, the other end of the auxiliary normally closed contact of the contactor KM3 is connected to one end of the ball warehouse photoelectric switch SQP1, the other end of the ball warehouse photoelectric switch SQP1 is connected to one end of the ball lane photoelectric switch SQP2, the other end of the ball lane photoelectric switch SQP2 is connected to one end of the auxiliary normally open contact of the contactor KM1, the other end of the auxiliary normally open contact of the contactor KM1 is connected to one end of the auxiliary normally closed contact of the thermal relay FR1, the other end of the auxiliary normally closed contact of the thermal relay FR1 is connected to one end of the contactor KM2 coil, and the other end of the contactor KM2 coil is connected to one end of the power supply L2;

[0014] One end of the power supply L1 is also connected to one end of the normally closed contact of the steel ball counting travel switch SQ1, the other end of the normally closed contact of the steel ball counting travel switch SQ1 is connected to one end of the coil of the time relay KT1, and the other end of the coil of the time relay KT1 is connected to one end of the power supply L2;

[0015] One end of the power supply L1 is also connected to one end of the auxiliary normally closed contact of the contactor KM2, the other end of the auxiliary normally closed contact of the contactor KM2 is connected to one end of the delayed closing normally open contact of the time relay KT1, the other end of the delayed closing normally open contact of the time relay KT1 is connected to one end of the auxiliary normally closed contact of the thermal relay FR2, the other end of the auxiliary normally closed contact of the thermal relay FR2 is connected to one end of the normally closed contact of the steel ball counting travel switch SQ1, the other end of the normally closed contact of the steel ball counting travel switch SQ1 is connected to one end of the coil of the contactor KM3, and the other end of the coil of the contactor KM3 is connected to one end of the power supply L2.

[0016] According to an embodiment of the present invention, the control circuit further includes an auxiliary normally open contact of a contactor KM3 , and the auxiliary normally open contact of the contactor KM3 is connected in parallel with the delayed closing normally open contact of the time relay KT1 .

[0017] According to an embodiment of the present invention, the model of the circuit breaker KF1 is DZ47-32 / 3P.

[0018] According to an embodiment of the present invention, the model of the contactor KM1 is CJX2-2510 / 380V; the model of the contactor KM2 is CJX2-1210 / 380V; and the model of the contactor KM3 is CJX2-1210 / 380V.

[0019] According to an embodiment of the present invention, the model of the thermal relay FR1 is JSR1-25 / 4-6A; the model of the thermal relay FR2 is JSR1-25 / 4-6A.

[0020] According to one embodiment of the present invention, the time relay KT1 is a dual-period time relay, model DH48S-S / 220V.

[0021] According to one embodiment of the present invention, the model of the ball chamber photoelectric switch SQP1 is G5O-D30ARH; the model of the ball lane photoelectric switch SQP2 is G5O-D30ARH.

[0022] According to one embodiment of the present invention, the model of the steel ball counting limit switch SQ1 is JLXK1-111

[0023] (3) Beneficial effects

[0024] The beneficial effects of the present invention are as follows: an interlocking control circuit of an automatic ball adding machine controls the operation of a vibration motor and a ball feeding motor respectively through two contactors, and the vibration motor and the ball feeding motor are interlocked to save electric energy and improve the working performance of the automatic ball adding machine; a photoelectric switch is used to control the vibration motor to stop, a time relay is used to control the operation of the ball feeding motor, and a steel ball counting stroke switch is used to control the ball feeding motor to stop, and the steel ball counting stroke switch can also control a counter to perform cumulative counting of steel balls; the circuit control of the present invention is simple and easy for maintenance personnel to maintain, and can realize automatic control of the ball adding machine, effectively avoiding the phenomena of ball jamming, ball blocking, ball falling and inaccurate steel ball counting. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 This is the main circuit principle diagram of the present invention;

[0027] Figure 2 This is a schematic diagram of the control circuit of the present invention.

[0028] Description of reference numerals:

[0029] L1, L2, L3: three-phase power supply; KF1: circuit breaker; KM1: contactor; KM2: contactor; KM3: contactor; FR1: thermal relay; FR2: thermal relay; M1: vibration motor; M2: ball feeding motor; SB1: start button; SB2: stop button; SQP1: ball chamber photoelectric switch; SQP2: ball track photoelectric switch; KT1: time relay; SQ1: steel ball counting travel switch. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0031] Combine Figure 1An interlocking control circuit for an automatic ball adding machine includes a main circuit, which includes three-phase power supplies L1, L2, and L3, a circuit breaker KF1, a main contact of a contactor KM1, a main contact of a contactor KM2, a main contact of a contactor KM3, a thermal element of a thermal relay FR1, a thermal element of a thermal relay FR2, a vibration motor M1, and a ball feeding motor M2; the output ends of the three-phase power supplies L1, L2, and L3 are respectively connected to the input ends of the circuit breaker KF1, and the output end of the circuit breaker KF1 is connected to the input end of the contactor KM1. The main contact output end of contactor KM1 is connected to the main contact input end of contactor KM2 and the main contact input end of contactor KM3 respectively; the main contact output end of contactor KM2 is connected to the thermal element input end of thermal relay FR1; the thermal element output end of thermal relay FR1 is connected to the three-phase stator winding of vibration motor M1; the main contact output end of contactor KM3 is connected to the thermal element input end of thermal relay FR2; the thermal element output end of thermal relay FR2 is connected to the three-phase stator winding of ball feeding motor M2.

[0032] Combine Figure 2 , an interlocking control circuit of an automatic ball adding machine includes a control circuit, which includes power supplies L1, L2, a start button SB1, a stop button SB1, an auxiliary normally open contact of contactor KM1, a coil of contactor KM1, a ball bin photoelectric switch SQP1, a ball lane photoelectric switch SQP2, an auxiliary normally closed contact of thermal relay FR1, an auxiliary normally closed contact of contactor KM2, a coil of contactor KM2, an auxiliary normally closed contact of contactor KM3, an auxiliary normally open contact of contactor KM3, a coil of contactor KM3, a coil of time relay KT1, a delayed closing normally open contact of time relay KT1, an auxiliary normally closed contact of thermal relay FR2, and a normally closed contact of steel ball counting stroke switch SQ1.

[0033] One end of the power supply L1 is connected to one end of the stop button SB1, the other end of the stop button SB1 is connected to one end of the start button SB2 and one end of the auxiliary normally open contact of the contactor KM1, the other end of the start button SB2 and the other end of the auxiliary normally open contact of the contactor KM1 are connected to one end of the contactor KM1 coil, and the other end of the contactor KM1 coil is connected to one end of the power supply L2.

[0034] One end of the power supply L1 is also connected to one end of the auxiliary normally closed contact of the contactor KM3, the other end of the auxiliary normally closed contact of the contactor KM3 is connected to one end of the ball warehouse photoelectric switch SQP1, the other end of the ball warehouse photoelectric switch SQP1 is connected to one end of the ball track photoelectric switch SQP2, the other end of the ball track photoelectric switch SQP2 is connected to one end of the auxiliary normally open contact of the contactor KM1, the other end of the auxiliary normally open contact of the contactor KM1 is connected to one end of the auxiliary normally closed contact of the thermal relay FR1, the other end of the auxiliary normally closed contact of the thermal relay FR1 is connected to one end of the contactor KM2 coil, and the other end of the contactor KM2 coil is connected to one end of the power supply L2.

[0035] One end of the power supply L1 is also connected to one end of the normally closed contact of the steel ball counting travel switch SQ1, the other end of the normally closed contact of the steel ball counting travel switch SQ1 is connected to one end of the coil of the time relay KT1, and the other end of the coil of the time relay KT1 is connected to one end of the power supply L2.

[0036] One end of the power supply L1 is also connected to one end of the auxiliary normally closed contact of the contactor KM2, the other end of the auxiliary normally closed contact of the contactor KM2 is connected to one end of the delayed closure normally open contact of the time relay KT1 and one end of the auxiliary normally open contact of the contactor KM3, the other end of the delayed closure normally open contact of the time relay KT1 and the other end of the auxiliary normally open contact of the contactor KM3 are connected to one end of the auxiliary normally closed contact of the thermal relay FR2, the other end of the auxiliary normally closed contact of the thermal relay FR2 is connected to one end of the normally closed contact of the steel ball counting travel switch SQ1, the other end of the normally closed contact of the steel ball counting travel switch SQ1 is connected to one end of the coil of the contactor KM3, and the other end of the coil of the contactor KM3 is connected to one end of the power supply L2.

[0037] The model of circuit breaker KF1 is DZ47-32 / 3P; the model of contactor KM1 is CJX2-2510 / 380V; the model of contactor KM2 is CJX2-1210 / 380V; the model of contactor KM3 is CJX2-1210 / 380V; the model of thermal relay FR1 is JSR1-25 / 4-6A; the model of thermal relay FR2 is JSR1-25 / 4-6A; the time relay KT1 is a dual-period time relay, model DH48S-S / 220V; the model of ball chamber photoelectric switch SQP1 is G5O-D30ARH; the model of ball channel photoelectric switch SQP2 is G5O-D30ARH; the model of steel ball counting travel switch SQ1 is JLXK1-111.

[0038] During operation, the ball storage bin of the automatic ball adding machine is filled with steel balls. The distribution box is opened, and circuit breaker KF1 in the main circuit is closed. In the control circuit, the start button SB2 is pressed, energizing the coil of contactor KM1 and closing its auxiliary normally open contacts, achieving self-locking. This closes the main contacts of contactor KM1 in the main circuit. Simultaneously, the auxiliary normally open contacts of contactor KM1 close, energizing the coil of contactor KM2. This closes the main contacts of contactor KM1 in the main circuit, activating vibration motor M1. This vibration motor M1 controls the vibration of the ball storage bin of the automatic ball adding machine, causing steel balls to fall from the bin's ball outlet. The falling balls enter the slider ball feeding mechanism through the ball drop channel. A ball bin photoelectric switch SQP1 is installed at the bin's ball outlet, and a ball channel photoelectric switch SQP2 is installed in the ball drop channel. When a steel ball passes through the ball bin photoelectric switch SQP1 or the ball lane photoelectric switch SQP2, the vibration motor M1 stops working. It can only be started when no steel balls pass through the ball bin photoelectric switch SQP1 or the ball lane photoelectric switch SQP2. The ball bin photoelectric switch SQP1 and the ball lane photoelectric switch SQP2 are also connected to the alarm. When the ball bin photoelectric switch SQP1 and the ball lane photoelectric switch SQP2 detect that there are no steel balls, it means that the ball storage bin is empty, and the alarm will sound an alarm to remind the staff to add steel balls.

[0039] The vibration motor M1 and the ball feed motor M2 are interlocked. The ball feed motor M2 is controlled by a time relay. At regular intervals, the time relay activates the ball feed motor M2. When a steel ball enters the ball mill through the ball counting switch SQ1, the ball counting switch SQ1 stops the ball feed motor M2. This switch then controls a counter, incrementing the value by 1 each time a steel ball passes through it. Simultaneously, the ball counting switch SQ1 energizes the time relay KT1. When the time relay KT1 expires, the ball feed motor M2 is activated, even if the vibration motor M1 is inactive and a steel ball is falling into the ball feed channel. This reciprocating action ensures automatic ball feeding in the ball mill.

[0040] In summary, in the embodiment of the present invention, the interlocking control circuit of the automatic ball adding machine controls the operation of the vibration motor and the ball feeding motor respectively through two contactors. The vibration motor and the ball feeding motor are interlocked and controlled, which can not only save electric energy but also improve the working performance of the automatic ball adding machine; a photoelectric switch is used to control the vibration motor to stop, a time relay is used to control the operation of the ball feeding motor, and a steel ball counting stroke switch is used to control the ball feeding motor to stop. The steel ball counting stroke switch can also control the counter to perform cumulative counting of steel balls; the circuit control of the present invention is simple and easy for maintenance personnel to maintain, and can realize automatic control of the ball adding machine, effectively avoiding the phenomena of ball jamming, ball blocking, ball falling and inaccurate steel ball counting.

[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An interlocking control circuit for an automatic ball adding machine, characterized in that: It includes a main circuit, which includes a three-phase power supply, which includes a power supply L1, a power supply L2, and a power supply L3; a circuit breaker KF1, a contactor KM1 main contact, a contactor KM2 main contact, a contactor KM3 main contact, a thermal element of a thermal relay FR1, a thermal element of a thermal relay FR2, a vibration motor M1, and a ball feeding motor M2; The three-phase power supply output end is respectively connected to the input end of the circuit breaker KF1, the output end of the circuit breaker KF1 is connected to the main contact input end of the contactor KM1, the main contact output end of the contactor KM1 is respectively connected to the main contact input end of the contactor KM2 and the main contact input end of the contactor KM3, the main contact output end of the contactor KM2 is connected to the thermal element input end of the thermal relay FR1, the thermal element output end of the thermal relay FR1 is connected to the three-phase stator winding of the vibration motor M1, the main contact output end of the contactor KM3 is connected to the thermal element input end of the thermal relay FR2, and the thermal element output end of the thermal relay FR2 is connected to the three-phase stator winding of the ball feeding motor M2. The control circuit includes power supply L1, power supply L2, start button SB2, stop button SB1, auxiliary normally open contact of contactor KM1, coil of contactor KM1, ball chamber photoelectric switch SQP1, ball lane photoelectric switch SQP2, auxiliary normally closed contact of thermal relay FR1, auxiliary normally closed contact of contactor KM2, coil of contactor KM2, auxiliary normally closed contact of contactor KM3, coil of contactor KM3, coil of time relay KT1, delayed closing normally open contact of time relay KT1, auxiliary normally closed contact of thermal relay FR2, normally closed contact of steel ball counting stroke switch SQ1; One end of the power supply L1 is connected to one end of the stop button SB1, the other end of the stop button SB1 is connected to one end of the start button SB2 and one end of the auxiliary normally open contact of the contactor KM1, the other end of the start button SB2 and the other end of the auxiliary normally open contact of the contactor KM1 are connected to one end of the contactor KM1 coil, and the other end of the contactor KM1 coil is connected to one end of the power supply L2; One end of the power supply L1 is also connected to one end of the auxiliary normally closed contact of the contactor KM3, the other end of the auxiliary normally closed contact of the contactor KM3 is connected to one end of the ball warehouse photoelectric switch SQP1, the other end of the ball warehouse photoelectric switch SQP1 is connected to one end of the ball lane photoelectric switch SQP2, the other end of the ball lane photoelectric switch SQP2 is connected to one end of the auxiliary normally open contact of the contactor KM1, the other end of the auxiliary normally open contact of the contactor KM1 is connected to one end of the auxiliary normally closed contact of the thermal relay FR1, the other end of the auxiliary normally closed contact of the thermal relay FR1 is connected to one end of the contactor KM2 coil, and the other end of the contactor KM2 coil is connected to one end of the power supply L2; One end of the power supply L1 is also connected to one end of the normally closed contact of the steel ball counting travel switch SQ1, the other end of the normally closed contact of the steel ball counting travel switch SQ1 is connected to one end of the coil of the time relay KT1, and the other end of the coil of the time relay KT1 is connected to one end of the power supply L2; One end of the power supply L1 is also connected to one end of the auxiliary normally closed contact of the contactor KM2, the other end of the auxiliary normally closed contact of the contactor KM2 is connected to one end of the delayed closing normally open contact of the time relay KT1, the other end of the delayed closing normally open contact of the time relay KT1 is connected to one end of the auxiliary normally closed contact of the thermal relay FR2, the other end of the auxiliary normally closed contact of the thermal relay FR2 is connected to one end of the normally closed contact of the steel ball counting travel switch SQ1, the other end of the normally closed contact of the steel ball counting travel switch SQ1 is connected to one end of the coil of the contactor KM3, and the other end of the coil of the contactor KM3 is connected to one end of the power supply L2; During specific operation, the ball storage bin of the automatic ball adding machine is filled with steel balls; the distribution box is opened, and the circuit breaker KF1 in the main circuit is closed; in the control circuit, the start button SB2 is pressed, the contactor KM1 coil is energized and the auxiliary normally open contact of the contactor KM1 is closed to achieve self-locking, and the main contact of the contactor KM1 in the main circuit is closed; while the auxiliary normally open contact of the contactor KM1 in the control circuit is closed, the contactor KM2 coil is energized, the main contact of the contactor KM1 in the main circuit is closed, and the vibration motor M1 works. The vibration motor M1 controls the vibration of the ball storage bin of the automatic ball adding machine, causing the steel balls to fall from the ball outlet of the storage bin, and the falling steel balls enter the slider ball feeder through the ball falling channel Structure; a ball bin photoelectric switch SQP1 is installed at the ball outlet of the ball storage bin, and a ball lane photoelectric switch SQP2 is installed on the ball falling channel; when a steel ball passes through the ball bin photoelectric switch SQP1 or the ball lane photoelectric switch SQP2, the vibration motor M1 stops working, and the vibration motor M1 can only be started when no steel ball passes through the ball bin photoelectric switch SQP1 and the ball lane photoelectric switch SQP2; the ball bin photoelectric switch SQP1 and the ball lane photoelectric switch SQP2 are also connected to an alarm, when the ball bin photoelectric switch SQP1 and the ball lane photoelectric switch SQP2 detect that there is no steel ball, it means that the ball storage bin is in a ball-free state, and the alarm sends an alarm message to remind the staff to add steel balls; The ball feeding motor M2 is controlled by a time relay. At regular intervals, the time relay starts the ball feeding motor M2. When the steel ball passes through the steel ball counting stroke switch SQ1 and enters the ball mill, the steel ball counting stroke switch SQ1 controls the ball feeding motor M2 to stop working. The steel ball counting stroke switch SQ1 controls the counter. Every time a steel ball passes through the steel ball counting stroke switch SQ1, the value in the counter increases by 1. At the same time, the steel ball counting stroke switch SQ1 controls the time relay KT1 to energize. When the power-on time of the time relay KT1 is up, the ball feeding motor M2 is started when the vibration motor M1 is not working and a steel ball falls in the ball feeding channel.

2. The interlocking control circuit of an automatic ball adding machine according to claim 1, wherein: The control circuit further comprises an auxiliary normally open contact of the contactor KM3, and the auxiliary normally open contact of the contactor KM3 is connected in parallel with the delayed closing normally open contact of the time relay KT1.

3. The interlocking control circuit of an automatic ball adding machine according to claim 1, wherein: The model of the circuit breaker KF1 is DZ47-32 / 3P.

4. An automatic ball adding machine interlocking control circuit as claimed in claim 1, characterized in that, The model of the contactor KM1 is CJX2-2510 / 380V; the model of the contactor KM2 is CJX2-1210 / 380V; the model of the contactor KM3 is CJX2-1210 / 380V.

5. The interlocking control circuit of an automatic ball adding machine as claimed in claim 1, characterized in that: The model of the thermal relay FR1 is JSR1-25 / 4-6A; the model of the thermal relay FR2 is JSR1-25 / 4-6A.

6. An interlocking control circuit for an automatic ball adding machine as claimed in claim 1, characterized in that: The time relay KT1 is a dual-period time relay, model DH48S-S / 220V.

7. An interlocking control circuit for an automatic ball adding machine as claimed in claim 1, characterized in that: The model of the ball chamber photoelectric switch SQP1 is G5O-D30ARH; the model of the ball lane photoelectric switch SQP2 is G5O-D30ARH.

8. An interlocking control circuit for an automatic ball adding machine as claimed in claim 1, characterized in that: The model of the steel ball counting travel switch SQ1 is JLXK1-111.

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