CN215939785U

CN215939785U - Emulsion equipment for stably producing high inward emulsion

Info

Publication number: CN215939785U
Application number: CN202122316136.1U
Authority: CN
Inventors: 王佳楠
Original assignee: Hangzhou Lanjiang Cosmetics Co ltd
Current assignee: Hangzhou Lanjiang Cosmetics Co ltd
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2022-03-04
Anticipated expiration: 2031-09-24

Abstract

The utility model discloses emulsification equipment for stably producing high inward emulsion, which comprises a bottom plate, two supporting plates and a fixed plate, wherein the two supporting plates are respectively fixed at two ends of the top of the bottom plate, two ends of the bottom of the fixed plate are respectively fixedly connected with the top ends of the two supporting plates, a stirring barrel is fixedly arranged at the top end of the fixed plate, a sealing cover is fixedly arranged at the top end of the stirring barrel, a discharging pipe with an electromagnetic valve is fixedly inserted at the bottom end of the stirring barrel, a feeding hopper is fixedly inserted at one end of the top of the sealing cover, a stirring mechanism is arranged in the stirring barrel, and a limiting mechanism is arranged in the middle of the top end of the bottom plate. According to the utility model, the low-speed motor is arranged, the output shaft of the low-speed motor drives the rotary drum to rotate, and the rotary drum drives the two sliding blocks and the two stirring frames to rotate, so that the emulsion raw materials in the stirring barrel are stirred.

Description

Emulsion equipment for stably producing high inward emulsion

Technical Field

The utility model relates to the technical field of emulsification equipment, in particular to emulsification equipment for stably producing high inward emulsion.

Background

Cosmetics are one of common daily necessities, and are in various types, such as face cleansing milk, skin moisturizing milk, hair care milk, essence milk, skin care milk, etc., and the preparation of these emulsions needs to be processed and emulsified by emulsification equipment, so that the water phase and the oil phase in the emulsions are compatible with each other, thereby forming emulsions, while most of the stirring mechanisms in the existing emulsification equipment adopt a stirring shaft for stirring, thus not only the stirring effect is poor, but also the water phase and the oil phase only flow in the same horizontal direction, the oil phase at the upper part is difficult to be compatible with the water phase at the bottom, and no stable emulsion can be formed, furthermore, when the emulsified emulsions are stored separately in a tank, most of the workers visually judge the height of the emulsions in the storage tank, thereby determining the amount of the emulsions in the storage tank, and thus the amount of the emulsions in the storage tank can not be accurately controlled, to this end we propose an emulsifying apparatus that stably produces a high inward emulsion to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to an emulsification apparatus for stably producing a high inward emulsion to solve the problems set forth in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: an emulsifying device for stably producing high inward emulsion comprises a bottom plate, two supporting plates and a fixed plate, and is characterized in that the two supporting plates are respectively fixed at two ends of the top of the bottom plate, two ends of the bottom of the fixed plate are respectively fixedly connected with the top ends of the two supporting plates, a stirring barrel is fixedly arranged at the top end of the fixed plate, a sealing cover is fixedly arranged at the top end of the stirring barrel, a discharging pipe with a solenoid valve is fixedly inserted at the bottom end of the stirring barrel, a feeding funnel is fixedly inserted at one end of the top of the sealing cover, a stirring mechanism is arranged in the stirring barrel, and a limiting mechanism is arranged in the middle of the top end of the bottom plate;

the stirring mechanism comprises a fixed rod, a supporting shaft, a rotating cylinder, a fixed cover, a slow motor, a connecting part, threaded rods, a sliding block and a stirring frame, wherein the bottom end of the rotating cylinder rotatably penetrates through the sealing cover, sliding grooves are formed in two sides of the rotating cylinder, two ends of the fixed rod are respectively fixedly connected with the bottom ends of two inner sides of the stirring barrel, the supporting shaft is fixed in the middle of the top end of the fixed rod, the top end of the supporting shaft is rotatably inserted in the bottom end of the rotating cylinder, the fixed cover is fixed at the top end of the rotating cylinder, the connecting part is fixed at the top end of the sealing cover, the slow motor is fixed in the middle of the top end of an inner cavity of the connecting part, the end part of an output shaft of the slow motor is fixedly connected with the middle of the top end of the fixed cover, the threaded rods, the sliding block and the stirring frame are respectively provided with two ends, one end of each threaded rod rotatably penetrates through the fixed cover and is respectively rotatably inserted in the bottom ends of the inner cavities of the two sliding grooves, the two sliding blocks are respectively sleeved on the two threaded rods in a threaded manner, the two sliding blocks are respectively connected inside the two sliding chutes in a sliding manner, and the two stirring frames are respectively fixed on the opposite sides of the two sliding blocks;

stop gear includes two fixed columns, two gag lever posts, two stoppers and a spacing section of thick bamboo, spacing section of thick bamboo is located arranges the bottom of material pipe, two the fixed column is fixed side by side and is all seted up the spacing groove in the top of bottom plate and two relative one sides of fixed column, two the gag lever post is fixed respectively in the inside of two spacing grooves, two the stopper is fixed respectively on the top of a spacing both sides and two stopper movable sleeve establish respectively on two gag lever posts.

Preferably, the outer surface of the end part of the output shaft of the slow motor is fixedly sleeved with a first gear, the outer surfaces of the other ends of the two threaded rods are fixedly sleeved with second gears, and the two second gears are meshed with the first gear.

Preferably, a guide twisted wire wheel is fixedly arranged at the top end of one of the inner cavities of the sliding groove and the top end of one of the inner sides of the rotating cylinder, a through hole is formed in the top end of one of the inner sides of the sliding groove, a pull rope penetrates through the through hole in a movable mode, one end of the pull rope is fixedly connected with the top end of one of the sliding blocks, a gravity block is fixedly arranged at the other end of the pull rope, the outer surface of the middle portion of the pull rope is wound on the two guide twisted wire wheels in a movable mode, a spring is fixedly arranged at the bottom end of the gravity block, and the bottom end of the spring is fixedly connected with the bottom end of the inner cavity of the rotating cylinder.

Preferably, the middle part and the bottom end of one of the inner sides of the rotating cylinder are both fixedly provided with fixed blocks, and two opposite sides of the fixed blocks are both fixedly provided with first pressure sensors.

Preferably, the bottom of the limiting cylinder is provided with a groove, a pressure block is movably placed in the groove, a second pressure sensor is fixedly arranged at the top end of the inner cavity of the groove, and a fixing ring are sleeved on the outer surface of the bottom end of the pressure block and fixed at the bottom end of the inner cavity of the groove.

Preferably, bolts are inserted into two ends of the top of the sealing cover in a threaded manner, and the bottom ends of the two bolts penetrate through the sealing cover in a threaded manner and are respectively in threaded connection with two ends of the top of the stirring barrel.

Preferably, a PLC controller is fixedly disposed on one side of one of the support plates.

Compared with the prior art, the utility model has the beneficial effects that:

1. the low-speed motor is arranged, the output shaft of the low-speed motor drives the rotary drum to rotate, the rotary drum drives the two sliding blocks and the two stirring frames to rotate at the same time, emulsion raw materials in the stirring barrel are stirred, the output shaft of the low-speed motor drives the first gear to rotate, the first gear drives the two second gears to rotate while rotating, the two second gears drive the two threaded rods to rotate while rotating, the two threaded rods can drive the two sliding blocks to move upwards or downwards while rotating, and then the two stirring frames are driven to move upwards or downwards, so that the emulsion raw materials in the stirring barrel can be stirred in a spiral rotation mode to ascend or in a spiral rotation mode to descend, the stirring effect is better, the uniform mixing is more sufficient, and the stability of produced emulsion can be improved;

2. through being equipped with spacing section of thick bamboo, can carry on spacingly to the holding vessel of peripheral hardware through spacing section of thick bamboo, when the solenoid valve through the row's of bolt control material pipe is opened, the inside of holding vessel then can flow to the emulsion after the inside emulsification of agitator this moment, spacing section of thick bamboo atress descends this moment, the pressure block receives the bottom plate to its reaction force rise simultaneously, and exert a pressure to second pressure sensor, second pressure sensor feeds back data to the PLC controller, the weight value of weight value and holding vessel that the data value that the PLC controller received subtracts spacing section of thick bamboo then is the weight value of emulsion, like this alright carry out weight monitoring in real time to the emulsion of the inside collection of holding vessel of placing on the spacing section of thick bamboo.

Drawings

FIG. 1 is a schematic structural diagram of an emulsification apparatus for stably producing a high inward emulsion according to the present invention;

FIG. 2 is a schematic cross-sectional view of an emulsification apparatus for stable production of high inward emulsion according to the present invention;

FIG. 3 is a schematic sectional view of the stirring mechanism of the present invention.

In the figure: 1. a base plate; 2. a support plate; 3. a fixing plate; 4. a stirring barrel; 5. a sealing cover; 601. fixing the rod; 602. a support shaft; 603. a rotary drum; 604. a fixed cover; 605. a slow speed motor; 606. a connecting portion; 607. a threaded rod; 608. a slider; 609. a stirring frame; 610. a first gear; 611. a second gear; 7. a discharge pipe; 801. fixing a column; 802. a limiting rod; 803. a limiting block; 804. a limiting cylinder; 805. a fixing ring; 806. a pressure block; 807. a second pressure sensor; 901. a guide wire twisting wheel; 902. pulling a rope; 903. a gravity block; 904. a spring; 905. a fixed block; 906. a first pressure sensor; 10. a bolt; 11. a PLC controller; 12. and (4) feeding a hopper.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: an emulsifying device for stably producing high inward emulsion comprises a bottom plate 1, two supporting plates 2 and a fixed plate 3, wherein the two supporting plates 2 are respectively fixed at two ends of the top of the bottom plate 1, two ends of the bottom of the fixed plate 3 are respectively fixedly connected with the top ends of the two supporting plates 2, a stirring barrel 4 is fixedly arranged at the top end of the fixed plate 3, a sealing cover 5 is fixedly arranged at the top end of the stirring barrel 4, a discharging pipe 7 with an electromagnetic valve is fixedly inserted at the bottom end of the stirring barrel 4, a feeding funnel 12 is fixedly inserted at one end of the top of the sealing cover 5, a stirring mechanism is arranged inside the stirring barrel 4, and a limiting mechanism is arranged in the middle of the top end of the bottom plate 1;

the stirring mechanism comprises a fixed rod 601, a supporting shaft 602, a rotating cylinder 603, a fixed cover 604, a slow motor 605, a connecting part 606, a threaded rod 607, a sliding block 608 and a stirring frame 609, wherein the bottom end of the rotating cylinder 603 rotatably penetrates through the sealing cover 5, sliding grooves are formed in two sides of the rotating cylinder 603, two ends of the fixed rod 601 are fixedly connected with the bottom ends of two inner sides of the stirring barrel 4 respectively, the supporting shaft 602 is fixed in the middle of the top end of the fixed rod 601, the top end of the supporting shaft 602 is rotatably inserted into the bottom end of the rotating cylinder 603, the fixed cover 604 is fixed at the top end of the rotating cylinder 603, the connecting part 606 is fixed at the top end of the sealing cover 5, the slow motor 605 is fixed in the middle of the top end of the connecting part 606, the end part of an output shaft of the slow motor 605 is fixedly connected with the middle of the top end of the fixed cover 604, two threaded rods 607, the sliding block 608 and the stirring frame 609 are provided, one end of each threaded rod 607 rotatably penetrates through the fixed cover 604 and is rotatably inserted into the bottom ends of the inner cavities of the two sliding grooves, the two sliding blocks 608 are respectively sleeved on the two threaded rods 607 in a threaded manner, the two sliding blocks 608 are respectively connected inside the two sliding grooves in a sliding manner, and the two stirring frames 609 are respectively fixed on the opposite sides of the two sliding blocks 608;

the limiting mechanism comprises two fixing columns 801, two limiting rods 802, two limiting blocks 803 and one limiting cylinder 804, the limiting cylinder 804 is located at the bottom of the discharging pipe 7, the two fixing columns 801 are fixed on the top end of the bottom plate 1 side by side, limiting grooves are formed in one sides, opposite to the two fixing columns 801, of the two fixing columns 801, the two limiting rods 802 are fixed inside the two limiting grooves respectively, the two limiting blocks 803 are fixed on the top ends of two sides of the limiting cylinder 804 respectively, and the two limiting blocks 803 are movably sleeved on the two limiting rods 802 respectively.

As an embodiment of the present invention, a first gear 610 is fixedly sleeved on an outer surface of an output shaft end of the slow motor 605, second gears 611 are fixedly sleeved on outer surfaces of the other ends of the two threaded rods 607, the two second gears 611 are both meshed with the first gear 610, the output shaft of the slow motor 605 drives the first gear 610 to rotate, the first gear 610 drives the two second gears 611 to rotate while rotating, the two second gears 611 drive the two threaded rods 607 to rotate while rotating, the two threaded rods 607 can drive the two sliding blocks 608 to move up or down while rotating, and further drive the two stirring frames 609 to move up or down.

As an embodiment of the present invention, a guiding twisted wire wheel 901 is fixedly disposed at the top end of an inner cavity of one of the sliding chutes and the top end of one of the inner sides of the rotating cylinder 603, a through hole is disposed at the top end of one of the inner sides of one of the sliding chutes, a pull rope 902 movably penetrates through the through hole, one end of the pull rope 902 is fixedly connected to the top end of one of the sliders 608, a gravity block 903 is fixedly disposed at the other end of the pull rope 902, the outer surface of the middle portion of the pull rope 902 is movably wound on the two guiding twisted wire wheels 901, a spring 904 is fixedly disposed at the bottom end of the gravity block 903, the bottom end of the spring 904 is fixedly connected to the bottom end of the inner cavity of the rotating cylinder 603, the two guiding twisted wire wheels 901 disposed can limit the pull rope 902, and the gravity action of the gravity block 903 and the elastic action of the spring 904 can reset the guiding twisted wire wheel 901.

As an embodiment of the present invention, fixing blocks 905 are fixedly disposed at the middle and bottom ends of one inner side of the rotating cylinder 603, first pressure sensors 906 are fixedly disposed at opposite sides of the two fixing blocks 905, and the two first pressure sensors 906 can be fixed by the two first pressure sensors 906.

As an embodiment of the utility model, a groove is formed at the bottom end of the limiting cylinder 804, a pressure block 806 is movably placed in the groove, a second pressure sensor 807 is fixedly arranged at the top end of an inner cavity of the groove, a fixing ring 805 is sleeved on the outer surface of the bottom end of the pressure block 806 and is fixed at the bottom end of the inner cavity of the groove, the pressure block 806 can be limited by the fixing ring 805, when the limiting cylinder 804 is stressed to descend, the pressure block 806 is raised by the reaction force of the bottom plate 1 on the pressure block, and a pressure is applied to the second pressure sensor 807, so that the weight of emulsion collected in a storage tank placed on the limiting cylinder 804 can be monitored in real time.

As an embodiment of the utility model, bolts 10 are inserted into both ends of the top of the sealing cover 5 in a threaded manner, the bottom ends of the two bolts 10 penetrate through the sealing cover 5 in a threaded manner and are respectively connected with both ends of the top of the stirring barrel 4 in a threaded manner, and the bolts 10 are arranged to play a role in assisting the fixation between the stirring barrel 4 and the sealing cover 5.

As an embodiment of the present invention, a PLC controller 11 is fixedly disposed on one side of one of the supporting plates 2, the PLC controller 11 is electrically connected to an external power source, the slow motor 605 and the solenoid valve of the discharging pipe 7 are electrically connected to an output end of the PLC controller 11, and the two first pressure sensors 906 and the one second pressure sensor 807 are electrically connected to an input end and an output end of the PLC controller 11.

The working principle is as follows: firstly, emulsion raw materials are placed in a stirring barrel 4 through a feeding hopper 12, then a PLC (programmable logic controller) 11 is opened, the PLC 11 receives a pressure data value fed back by monitoring of a second pressure sensor 807 at the moment, the pressure data value received by the PLC 11 is the sum of the self weight value of a limiting barrel 804 and the self weight value of a storage tank placed inside the limiting barrel 804, then an interval value of two first pressure sensors 906 is set on the PLC 11, then a slow motor 605 is controlled to start to work through the PLC 11, the slow motor 605 drives a rotating barrel 603 to rotate through an output shaft of the slow motor 605, meanwhile, the rotating barrel 603 drives two sliding blocks 608 and two stirring frames 609 to rotate, the emulsion raw materials inside the stirring barrel 4 are stirred, meanwhile, the output shaft of the slow motor 605 drives a first gear 610 to rotate, the first gear 610 drives two second gears 611 to rotate while rotating, the two second gears 611 drive the two threaded rods 607 to rotate while rotating, the two threaded rods 607 can drive the two sliding blocks 608 to move upwards or downwards while rotating, and further drive the two stirring frames 609 to move upwards or downwards, while one sliding block 608 can take up or pay off the pull rope 902 during ascending or descending, the pull rope 902 drives the gravity block 903 to move, when the gravity block 903 touches any one of the first pressure sensors 906, the first pressure sensor 906 feeds back a data value to the PLC controller 11, when the data value received by the PLC controller 11 reaches a set value, the PLC controller 11 sends an instruction to the slow motor 605, so that the output shaft of the slow motor 605 rotates in the reverse direction, while the output shaft of the slow motor 605 drives the rotating cylinder 603 to rotate in the reverse direction, and meanwhile, the rotating cylinder 603 drives the two sliding blocks 608 and the two stirring frames 609 to rotate in the reverse direction, the raw materials of the emulsion in the stirring barrel 4 are reversely stirred, meanwhile, the output shaft of the slow speed motor 605 drives the first gear 610 to reversely rotate, the first gear 610 drives the two second gears 611 to reversely rotate while reversely rotating, the two second gears 611 drive the two reverse threaded rods 607 to rotate while reversely rotating, the two threaded rods 607 can drive the two sliding blocks 608 to move towards opposite directions while reversely rotating, so that the raw materials of the emulsion in the stirring barrel 4 can be stirred in a reciprocating spiral rotation ascending or spiral rotation descending manner, the stirring effect is better, the mixing is more sufficient, the stability of the produced emulsion can be improved, after the stirring is finished, the valve of the discharge pipe 7 is opened through the PLC 11, the emulsified emulsion in the stirring barrel 4 can flow into the storage tank, meanwhile, the limiting barrel 804 is stressed to descend, and simultaneously, the pressure block 806 is lifted by the reaction force of the bottom plate 1, and exert a pressure to second pressure sensor 807, second pressure sensor 807 feeds back data to PLC controller 11, the weight value of spacing section of thick bamboo 804 and the weight value of holding vessel are then the weight value of emulsion is subtracted to the data value that PLC controller 11 received, alright carry out weight monitoring to the inside emulsion of collecting of the holding vessel that places on spacing section of thick bamboo 804 in real time like this, make the inside emulsion volume of collecting of holding vessel reach the required value, when the inside emulsion volume of collecting of holding vessel reaches the required value, close the solenoid valve of row material pipe 7, take away the holding vessel from spacing section of thick bamboo 804 can.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The emulsifying equipment for stably producing the high inward emulsion comprises a bottom plate (1), two supporting plates (2) and a fixing plate (3), and is characterized in that the two supporting plates (2) are respectively fixed at two ends of the top of the bottom plate (1), two ends of the bottom of the fixing plate (3) are respectively fixedly connected with the top ends of the two supporting plates (2), a stirring barrel (4) is fixedly arranged at the top end of the fixing plate (3), a sealing cover (5) is fixedly arranged at the top end of the stirring barrel (4), a discharging pipe (7) with an electromagnetic valve is fixedly inserted at the bottom end of the stirring barrel (4), a feeding funnel (12) is fixedly inserted at one end of the top of the sealing cover (5), a stirring mechanism is arranged inside the stirring barrel (4), and a limiting mechanism is arranged in the middle of the top end of the bottom plate (1);

the stirring mechanism comprises a fixed rod (601), a supporting shaft (602), a rotating cylinder (603), a fixed cover (604), a slow motor (605), a connecting part (606), a threaded rod (607), a sliding block (608) and a stirring frame (609), wherein the bottom end of the rotating cylinder (603) rotatably penetrates through the sealing cover (5), sliding grooves are formed in two sides of the rotating cylinder (603), two ends of the fixed rod (601) are fixedly connected with the bottom ends of two inner sides of the stirring barrel (4) respectively, the supporting shaft (602) is fixed in the middle of the top end of the fixed rod (601), the top end of the supporting shaft (602) is rotatably inserted into the bottom end of the rotating cylinder (603), the fixed cover (604) is fixed at the top end of the rotating cylinder (603), the connecting part (606) is fixed at the top end of the sealing cover (5), the slow motor (605) is fixed in the middle of the top end of an inner cavity of the connecting part (606), and the end part of an output shaft of the slow motor (605) is fixedly connected with the middle of the top end of the fixed cover (604), two threaded rods (607), two sliding blocks (608) and two stirring frames (609), wherein one end of each of the two threaded rods (607) rotatably penetrates through the fixed cover (604) and is rotatably inserted at the bottom ends of the inner cavities of the two sliding grooves, the two sliding blocks (608) are respectively sleeved on the two threaded rods (607) in a threaded manner, the two sliding blocks (608) are respectively connected in the two sliding grooves in a sliding manner, and the two stirring frames (609) are respectively fixed on the opposite sides of the two sliding blocks (608);

stop gear includes two fixed columns (801), two gag lever posts (802), two stopper (803) and a spacing section of thick bamboo (804), a spacing section of thick bamboo (804) are located the bottom of arranging material pipe (7), two the fixed column (801) are fixed side by side and are all seted up the spacing groove in the top of bottom plate (1) and two relative one sides of fixed column (801), two gag lever posts (802) are fixed respectively in the inside of two spacing grooves, two stopper (803) are fixed respectively on the top of a spacing section of thick bamboo (804) both sides and two stopper (803) movable sleeve are respectively established on two gag lever posts (802).

2. The emulsification device of claim 1, wherein: the outer surface of the end part of the output shaft of the slow motor (605) is fixedly sleeved with a first gear (610), the outer surfaces of the other ends of the two threaded rods (607) are respectively and fixedly sleeved with a second gear (611), and the two second gears (611) are respectively in meshed connection with the first gear (610).

3. The emulsification device of claim 1, wherein: the top end of one of the inner cavity of the sliding groove and the top end of one of the inner sides of the rotating cylinder (603) are fixedly provided with guide twisted wire wheels (901), a through hole is formed in the top end of one of the inner sides of the sliding groove, a pull rope (902) penetrates through the through hole in a movable manner, one end of the pull rope (902) is fixedly connected with the top end of one of the sliding blocks (608), the other end of the pull rope (902) is fixedly provided with a gravity block (903), the outer surface of the middle part of the pull rope (902) is wound on the two guide twisted wire wheels (901) in a movable manner, the bottom end of the gravity block (903) is fixedly provided with a spring (904), and the bottom end of the spring (904) is fixedly connected with the bottom end of the inner cavity of the rotating cylinder (603).

4. The emulsification device of claim 1, wherein: the middle part and the bottom end of one of them inboard of rotatory section of thick bamboo (603) all are fixed and are equipped with fixed block (905), two one side that fixed block (905) is relative all is fixed and is equipped with first pressure sensor (906).

5. The emulsification device of claim 1, wherein: the bottom of a limiting cylinder (804) is provided with a groove, a pressure block (806) is movably placed in the groove, a second pressure sensor (807) is fixedly arranged at the top end of an inner cavity of the groove, and a fixing ring (805) are sleeved on the outer surface of the bottom end of the pressure block (806) and fixed at the bottom end of the inner cavity of the groove.

6. The emulsification device of claim 1, wherein: bolts (10) are inserted into two ends of the top of the sealing cover (5) in a threaded manner, and the bottom ends of the two bolts (10) penetrate through the sealing cover (5) in a threaded manner and are respectively in threaded connection with two ends of the top of the stirring barrel (4).

7. The emulsification device of claim 1, wherein: one side of one of the supporting plates (2) is fixedly provided with a PLC (programmable logic controller) (11).