CN218531593U

CN218531593U - Surface coating machine for processing carton capable of continuously conveying

Info

Publication number: CN218531593U
Application number: CN202222505341.7U
Authority: CN
Inventors: 魏伟明
Original assignee: Xiamen Yaoyiwei Industry And Trade Co ltd
Current assignee: Xiamen Yaoyiwei Industry And Trade Co ltd
Priority date: 2022-09-21
Filing date: 2022-09-21
Publication date: 2023-02-28
Anticipated expiration: 2032-09-21

Abstract

The application discloses but continuous conveyor's carton processing is with surface coating machine relates to carton processing technology field. This application includes the support frame, be fixed with inside hollow box of placing on the support frame. This application air exhauster starts the back and can inhales the suction box with the air of dust absorption mouth department together with impurity and dust, the air that inhales the suction box passes through the filter screen with impurity and dust, when carrying out the rubber coating room to the cardboard, stack the cardboard in placing the box, can follow the through opening propelling movement with the cardboard and give to in the rubber coating room through promoting the subassembly, when the cardboard gets into the rubber coating room, the brush board can be swept away by the dust or the impurity of cardboard upper surface, and simultaneously, the dust and the impurity of carton lower surface can be extracted by the air exhauster in the holding vessel, clean good cardboard and get into the rubber coating room, can carry out the rubber coating to the cardboard surface through rubber coating mechanism, and then can reduce the influence of dust and impurity to the rubber coating effect.

Description

Surface coating machine for processing carton capable of continuously conveying

Technical Field

The application relates to the technical field of carton processing, in particular to a surface gluing machine for carton processing capable of continuous conveying

Background

The paper box is the most widely used packing product, and has various specifications and models, such as corrugated paper boxes, single-layer cardboard boxes and the like according to different materials. The carton is commonly used for three layers and five layers, seven layers are used less, each layer is divided into lining paper, corrugated paper, core paper and face paper, the lining paper and the face paper comprise tea board paper and kraft paper, the corrugated paper for the core paper has different colors and handfeel, and the paper produced by different manufacturers is different. The surface of the carton is coated with glue on the part of the carton, so that the carton has certain waterproofness.

The packaging carton surface gluing machine provided in the existing Chinese published patent (No. CN 210010111U) comprises a frame, wherein a gluing component is arranged in the frame; the rubber coating subassembly includes gluey groove, glue spreader and rubber coating compression roller axis parallel arrangement, and the both ends of glue spreader, rubber coating compression roller rotate with the both sides internal surface of frame respectively and are connected, and the rubber coating compression roller sets up in the top of glue spreader, glues the below that the groove is located the glue spreader, and the opening in glue groove is on a parallel with the axis setting of glue spreader and partial glue spreader sets up in the opening in glue groove, and the pivot of glue spreader is connected with rubber coating power unit. The utility model has the advantages of it can overcome prior art's drawback, and structural design is reasonable novel.

But this utility model does not clean the surperficial impurity of cardboard and dust, after to cardboard surface rubber coating, because there are impurity and dust on the cardboard surface for the glue solution does not contact with the cardboard completely, thereby influences the rubber coating effect.

SUMMERY OF THE UTILITY MODEL

The purpose of this application lies in: in order to solve and after the rubber coating of cardboard surface, because there are impurity and dust on the cardboard surface for the glue solution does not contact with the cardboard completely, thereby influences the problem of rubber coating effect, this application provides a carton processing that can carry in succession and uses surface coating machine.

The following technical scheme is specifically adopted in the application to achieve the purpose:

the utility model provides a but continuous conveyor's carton processing is with surface coating machine, includes the support frame, be fixed with inside hollow on the support frame and place the box, be fixed with inside hollow rubber coating room on the support frame, the rubber coating room is kept away from one side of placing the box and has been seted up the delivery outlet, be provided with in the rubber coating room and be used for the rubber coating mechanism to carton surface rubber coating, it has seted up through-hole to place box one side, it communicates with each other with the rubber coating room through-hole to place the box, it has seted up the shifting chute in the box to place, it is located the shifting chute sliding connection baffle to place the box, be provided with on the support frame and be used for the cardboard from through-hole propelling movement to the promotion subassembly of rubber coating room, one side that the baffle is close to the rubber coating room is fixed with the brush board, the support frame bottom is fixed with the dust removal case, the storage tank has been seted up in the dust removal incasement, the dust removal case is close to the through-hole one side of crossing has seted up the dust removal, it communicates with each other through the storage tank through dust collection opening, the dust removal incasement installs the air exhauster, the air exhauster air inlet end sets up at the incasement portion, the air exhauster is located between filter screen through the filter screen can dismantle through the filter screen.

Through adopting the above-mentioned technical scheme, it is indoor that the promotion subassembly can follow the mouth that runs through and promote the rubber coating, when the cardboard gets into the rubber coating room, the brush board can be swept away the dust or the impurity of cardboard upper surface, and simultaneously, the dust and the impurity of carton lower surface can be extracted by the air exhauster in the holding vessel, thereby can clean the upper surface of cardboard and the impurity or the dust of lower surface, the cardboard that cleans gets into the rubber coating room, can carry out the rubber coating to the cardboard surface through rubber coating mechanism, and then can reduce the influence of dust and impurity to the rubber coating effect.

Further, the promotion subassembly is including fixing the motor one on the support frame, motor one end output is fixed with the connecting plate, the promotion groove has been seted up on the support frame, the support frame is located promotion inslot sliding connection and has the slurcam, the spout has been seted up to the slurcam bottom, sliding connection has the connecting rod in the spout, the connecting rod bottom is articulated with the connecting plate.

Through adopting above-mentioned technical scheme, when the kickboard removed to being close to rubber coating room direction, can be with being close to the cardboard propelling movement of through-hole department to the rubber coating indoor, when the kickboard removed to keeping away from rubber coating room direction, the cardboard of not printing can move down under the effect of gravity, and then can make the kickboard repeatedly with the cardboard propelling movement of not printing in the rubber coating room to this can realize the continuous conveyor to the cardboard.

Further, rubber coating mechanism is including rotating preheating roller one and the glue spreader of connection in the rubber coating is indoor, the rubber coating is indoor to have seted up gluey groove, the indoor lifting groove of having seted up of rubber coating, the rubber coating is indoor to be located lifting groove sliding connection has the lifter plate, the indoor lifting unit who is used for driving the lifter plate lift that is provided with of rubber coating, the lifter plate bottom is rotated and is connected with preheating roller two and rubber coating compression roller, the indoor auxiliary roll that is fixed with of rubber coating, the auxiliary roll lateral wall contacts with the rubber coating roller, the indoor power component that is used for driving preheating roller one, preheating roller two, rubber coating roller and rubber coating compression roller pivoted that is provided with of rubber coating.

Through adopting above-mentioned technical scheme, dip in at the glue solution at the glue spreader and get the contact with the auxiliary roll after for the auxiliary roll breaks the hungry glue solution foam on glue spreader surface, and the rotation of rethread rubber coating compression roller and glue spreader contacts, makes the glue solution on glue spreader surface distribute more evenly, and then makes the glue spreader more even to cardboard rubber coating room.

Furthermore, the power assembly comprises two motors II fixed in the gluing chamber, driving wheels are fixed at one ends of the preheating roller I and the preheating roller II, the output ends of the motors II are respectively connected with the driving wheels at corresponding positions, driven wheels are fixed at one ends of the gluing roller and the gluing compression roller, and the driven wheels are connected with the driving wheels at corresponding positions through belts.

By adopting the technical scheme, the preheating roller I, the preheating roller II, the glue coating roller and the glue coating press roller can be driven to rotate after the motor II is started.

Furthermore, the lifting assembly comprises an electric telescopic rod fixed on the top wall of the gluing chamber, and the telescopic end of the electric telescopic rod is fixed with the lifting plate.

By adopting the technical scheme, the distances between the first preheating roller and the gluing pressing roller and between the second preheating roller and the gluing pressing roller can be adjusted.

Furthermore, a screw rod is rotatably connected in the placing box, one end of the screw rod is in threaded connection with the baffle, and a rotating button is fixed at the top end of the screw rod.

Through adopting above-mentioned technical scheme, can the distance between adjustable fender bottom and the support frame for the through opening can only pass through a cardboard, and then can so that the cardboard of different thickness passes through from the through opening, and the convenience carries out the rubber coating to the cardboard of different thickness.

In summary, the present application includes at least one of the following advantages;

1. after the exhaust fan is started, air at the dust suction port, impurities and dust can be sucked into the dust suction box, the air sucked into the dust suction box, the impurities and the dust are filtered through the filter screen, the impurities and the dust are filtered in the storage tank, the filtered air is discharged through the air outlet end, when a glue coating chamber is carried out on the paper boards, the paper boards are stacked in the placing box, the paper boards can be pushed into the glue coating chamber from the through hole through the pushing assembly, when the cardboard got into the rubber coating room, the brush board can be swept away the dust or the impurity of cardboard upper surface, and simultaneously, the dust and the impurity of carton lower surface can be by the air exhauster in extracting the hold up tank, clean good cardboard and get into the rubber coating room, can carry out the rubber coating to the cardboard surface through rubber coating mechanism, and then can reduce the influence of dust and impurity to the rubber coating effect.

2. When the cardboard gets into the rubber coating indoor, the cardboard is earlier from preheating roller one and preheating roller two between through, reentrant between glue spreader and the rubber coating compression roller, can carry out and heat the cardboard through preheating roller one and preheating roller two, thereby can make the cardboard can with the better bonding of glue solution after the heating, avoid the shrinkage different emergence of glue solution and cardboard to shrink, the glue groove is located the glue spreader below, and contact with the lower lateral wall of glue spreader, contact with the auxiliary roll after the glue spreader is dipped in the glue solution, make the auxiliary roll crowd the glue solution foam on glue spreader surface and break through, rethread rubber coating compression roller and the rotational contact of glue spreader, make the glue solution distribution on glue spreader surface more even, and then make the glue spreader more even to cardboard rubber coating room.

Drawings

FIG. 1 is a schematic perspective view of a device body according to the present application;

FIG. 2 is a schematic view of the structure at the position of the baffle in the present application;

FIG. 3 is a schematic view of the structure of the push plate of the present application;

FIG. 4 is a schematic view of the structure of the gluing mechanism of the present application;

fig. 5 is a cross-sectional view in the present application.

Description of reference numerals:

1. a support frame; 2. placing a box; 3. a gluing chamber; 4. a baffle plate; 5. a brush plate; 6. a dust removal box; 7. an exhaust fan; 8. a filter screen; 9. a pushing assembly; 91. a first motor; 92. a connecting plate; 93. a push plate; 94. a connecting rod; 10. a gluing mechanism; 101. a first preheating roller; 102. glue spreading roller; 103. a lifting plate; 104. a second preheating roller; 105. gluing a press roller; 106. an auxiliary roller; 11. a power assembly; 111. a second motor; 112. a drive wheel; 113. a driven wheel; 114. a belt; 12. a lifting assembly; 121. an electric telescopic rod; 13. a screw rod; 14. and (6) turning a button.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses but continuous conveyor's carton processing is with surface coating machine.

Referring to fig. 1-4, a surface coating machine for processing carton that can carry in succession, including support frame 1, be fixed with inside hollow box 2 of placing on support frame 1, be fixed with inside hollow rubber coating room 3 on support frame 1, rubber coating room 3 keeps away from one side of placing box 2 and has seted up the delivery outlet, be provided with rubber coating mechanism 10 that is used for to carton surface rubber coating in the rubber coating room 3, place box 2 one side and seted up the through-hole, it communicates with each other with rubber coating room 3 to place box 2 through the through-hole, it has the moving slot to place to open in box 2, it has baffle 4 to place box 2 and be located sliding connection in the moving slot, be provided with on support frame 1 and be used for propelling movement subassembly 9 with cardboard from the through-hole propelling movement to rubber coating room 3, baffle 4 is close to one side of rubber coating room 3 and is fixed with brush board 5, support frame 1 bottom is fixed with dust removal case 6, it has the storage tank to open in dust removal case 6, it communicates with each other to place box 2 through passing through dust removal mouth storage tank, install air exhauster 7 in dust removal case 6, air inlet end sets up air outlet and is fixed with filter screen 8 through dust removal case. The air in the dust suction port can be sucked into the dust suction box together with impurities and dust after the exhaust fan 7 is started, the air sucked into the dust suction box together with the impurities and the dust is filtered through the filter screen 8, the impurities and the dust are filtered in the storage tank, the filtered air is discharged through the air outlet end, when the paperboard is subjected to the gluing chamber 3, the paperboards are stacked in the placement box 2, the paperboards can be pushed into the gluing chamber 3 from the through openings through the pushing assembly 9, the brush plate 5 is fixed on one side of the baffle 4, when the paperboard enters the gluing chamber 3, the brush plate 5 can sweep away the dust or the impurities on the upper surface of the paperboard, meanwhile, the dust and the impurities on the lower surface of the paperboard can be extracted into the storage tank through the exhaust fan 7, the impurities on the upper surface and the lower surface of the paperboard can be swept away, the cleaned paperboard enters the gluing chamber 3, the gluing mechanism 10 can be used for gluing the surface of the paperboard, and further, the influence of the dust and the impurities on the gluing effect can be reduced.

Referring to fig. 2 and 3, the pushing assembly 9 includes a first motor 91 fixed on the support frame 1, a connecting plate 92 is fixed at an output end of the first motor 91, a pushing groove is formed in the support frame 1, the support frame 1 is located in the pushing groove and is connected with a pushing plate 93 in a sliding mode, a sliding groove is formed in the bottom of the pushing plate 93, a connecting rod 94 is connected in the sliding groove in a sliding mode, and the bottom of the connecting rod 94 is hinged to the connecting plate 92. After the motor 91 is started, the connecting plate 92 can be driven to rotate, because the connecting plate 92 is hinged to the connecting rod 94, thereby the connecting rod 94 can be driven to move in the chute when the connecting plate 92 rotates, meanwhile, the pushing plate 93 moves in the pushing groove, when the pushing plate 93 moves towards the direction close to the gluing chamber 3, the paperboard close to the through hole can be pushed into the gluing chamber 3, when the pushing plate 93 moves towards the direction far away from the gluing chamber 3, the unprinted paperboard can move downwards under the action of gravity, and then the pushing plate 93 can repeatedly push the unprinted paperboard into the gluing chamber 3, and therefore continuous conveying of the paperboard can be achieved.

Referring to fig. 2 and 4, the glue coating mechanism 10 includes a first preheating roller 101 and a glue coating roller 102 rotatably connected in the glue coating chamber 3, a glue groove is formed in the glue coating chamber 3, a lifting plate 103 is slidably connected in the lifting groove of the glue coating chamber 3, a lifting assembly 12 for driving the lifting plate 103 to lift is arranged in the glue coating chamber 3, a second preheating roller 104 and a glue coating pressing roller 105 are rotatably connected to the bottom of the lifting plate 103, an auxiliary roller 106 is fixed in the glue coating chamber 3, the outer side wall of the auxiliary roller 106 is in contact with the glue coating roller 102, and a power assembly 11 for driving the first preheating roller 101, the second preheating roller 104, the glue coating roller 102 and the glue coating pressing roller 105 to rotate is arranged in the glue coating chamber 3. The distance between the first preheating roller 101 and the second preheating roller 104 and the distance between the second gluing roller 105 and the second preheating roller 104 can be adjusted through the lifting assembly 12, so that the paperboards with different thicknesses can be conveniently glued, when the paperboards enter the gluing chamber 3, the paperboards firstly pass between the first preheating roller 101 and the second preheating roller 104 and then enter between the gluing roller 102 and the gluing roller 105, the paperboards can be heated through the first preheating roller 101 and the second preheating roller 104, the paperboards can be better bonded with glue after being heated, shrinkage of the glue and the paperboards is avoided, the power assembly 11 can drive the first preheating roller 101, the second preheating roller 104, the gluing roller 102 and the gluing roller 105 to rotate, when the first preheating roller 101 and the second preheating roller 104 rotate, the paperboards can be conveyed between the gluing roller 102 and the gluing roller 105, a glue groove is located below the gluing roller 102 and is in contact with the lower side wall of the gluing roller 102, the gluing roller 102 is in contact with the auxiliary roller 106 after the glue is dipped by the auxiliary roller 106, the glue groove is in contact with the gluing roller 105, the surface of the gluing roller 102, and the gluing roller 102 is in contact with the gluing roller 105, and the gluing roller 102, so that the gluing roller 102 is more uniformly distributed in the gluing chamber, and the gluing roller 102 is more uniformly.

Referring to fig. 2 and 4, the power assembly 11 includes two motors two 111 fixed in the glue applying chamber 3, one ends of the preheating rollers one 101 and two ends of the preheating rollers 104 are both fixed with driving wheels 112, output ends of the two motors two 111 are both fixed with the driving wheels 112 at corresponding positions, one ends of the glue applying roller 102 and the glue applying press roller 105 are both fixed with driven wheels 113, and the driven wheels 113 are connected with the driving wheels 112 at corresponding positions through belts 114. After the motor II 111 is started, the driving wheel 112 can be driven to rotate, so that the driving wheel 112 drives the preheating roller I101 and the preheating roller II 104 to rotate, and the driven wheel 113 is connected with the driving wheel 112 at the corresponding position through the belt 114, so that the motor II 111 can drive the preheating roller I101, the preheating roller II 104, the glue coating roller 102 and the glue coating press roller 105 to rotate after being started.

Referring to fig. 2 and 5, the lifting assembly 12 includes an electric telescopic rod 121 fixed on the top wall of the gluing chamber 3, and the telescopic end of the electric telescopic rod 121 is fixed with the lifting plate 103. After the electric telescopic rod 121 is started, the lifting plate 103 can be driven to lift in the lifting groove, so that the distances between the first preheating roller 101 and the gluing pressing roller 105 and between the second preheating roller 104 and the gluing pressing roller 105 can be adjusted.

Referring to fig. 2 and 3, a screw rod 13 is rotatably connected in the placing box 2, one end of the screw rod 13 is in threaded connection with the baffle 4, and a knob 14 is fixed at the top end of the screw rod 13. The rotating button 14 can drive the screw rod 13 to rotate, and one end of the screw rod 13 is in threaded connection with the baffle 4, so that when the screw rod 13 rotates, the baffle 4 can be driven to move in the moving groove, the distance between the bottom of the baffle 4 and the support frame 1 can be adjusted, the penetrating opening can only pass through one paperboard, the paperboards with different thicknesses can pass through the penetrating opening, and the paperboards with different thicknesses can be conveniently coated with glue.

The working principle is as follows: after the exhaust fan 7 is started, air at a dust suction port, impurities and dust can be sucked into the dust suction box, the air sucked into the dust suction box, the impurities and the dust are filtered through the filter screen 8, the impurities and the dust are filtered in the storage tank, the filtered air is discharged through the air outlet end, when a glue coating chamber 3 is carried out on the paper boards, the paper boards are stacked in the placing box 2, the first motor 91 is started to drive the connecting plate 92 to rotate, the connecting plate 92 is hinged with the connecting rod 94, the connecting rod 94 can be driven to move in the sliding groove when the connecting plate 92 rotates, meanwhile, the pushing plate 93 moves in the pushing groove, when the pushing plate 93 moves towards the glue coating chamber 3, the paper boards close to the through hole can be pushed into the glue coating chamber 3, when the pushing plate 93 moves towards the direction far away from the glue coating chamber 3, the unprinted paper boards can move downwards under the action of gravity, the pushing plate 93 can repeatedly push unprinted paperboards into the gluing chamber 3, continuous conveying of the paperboards can be achieved, the brush plate 5 is fixed on one side of the baffle plate 4, so that when the paperboards enter the gluing chamber 3, dust or impurities on the upper surfaces of the paperboards can be swept away by the brush plate 5, meanwhile, dust and impurities on the lower surfaces of the paperboards can be extracted into the storage tank by the exhaust fan 7, the impurities or dust on the upper surfaces and the lower surfaces of the paperboards can be swept, when the paperboards enter the gluing chamber 3, the paperboards firstly pass through the preheating rollers I101 and II 104 and then enter the gluing rollers 102 and 105, and can be heated through the preheating rollers I101 and II 104, so that the paperboards can be better bonded with glue after being heated, and shrinkage caused by different shrinkage degrees of the glue and the paperboards can be avoided, when the first preheating roller 101 and the second preheating roller 104 rotate, the paperboard can be conveyed between the glue spreader 102 and the glue spreading press roller 105, the glue groove is located below the glue spreader 102 and contacts with the lower side wall of the glue spreader 102, after the glue spreader 102 dips the glue solution, the glue groove contacts with the auxiliary roller 106, the auxiliary roller 106 breaks through foam of the glue solution on the surface of the glue spreader 102, and then the glue solution on the surface of the glue spreader 102 is more uniformly distributed through the rotating contact of the glue spreading press roller 105 and the glue spreader 102, so that the glue spreader 102 is more uniform in a paperboard glue spreading chamber 3, and further, the influence of dust and impurities on a gluing effect can be reduced.

Claims

1. The utility model provides a but continuous conveyor's carton processing is with surface coating machine, includes support frame (1), its characterized in that: the novel paper box is characterized in that a hollow placing box (2) is fixed on the support frame (1), a hollow gluing chamber (3) is fixed on the support frame (1), one side of the gluing chamber (3) far away from the placing box (2) is provided with an output port, a gluing mechanism (10) used for gluing the surface of a paper box is arranged in the gluing chamber (3), one side of the placing box (2) is provided with a through hole, the placing box (2) is communicated with the gluing chamber (3) through the through hole, a moving groove is formed in the placing box (2), the placing box (2) is positioned in the moving groove and is connected with a baffle (4) in a sliding manner, a pushing assembly (9) used for pushing a paper board to the gluing chamber (3) from the through hole is arranged on the support frame (1), one side of the baffle (4) close to the gluing chamber (3) is fixed with a brush board (5), a dust removing box (6) is fixed at the bottom of the support frame (1), a storage groove is formed in the dust removing box (6), one side of the dust removing box (6) close to the through hole is provided with a dust removing box (7), and the dust removing box (6) is provided with an air suction fan (7), and the dust removing box (7) which is arranged at the inner side of the dust removing box (7), can dismantle through the bolt in dust removal case (6) and be fixed with filter screen (8), filter screen (8) are located between air exhauster (7) and the dust absorption mouth.

2. A surface-coating machine for continuously conveyable carton processing according to claim 1, characterized in that: the push assembly (9) comprises a first motor (91) fixed on the support frame (1), a first motor (91) output end is fixed with a connecting plate (92), a push groove is formed in the support frame (1), the support frame (1) is located in the push groove and is slidably connected with a push plate (93), a sliding groove is formed in the bottom of the push plate (93), a connecting rod (94) is slidably connected in the sliding groove, and the bottom of the connecting rod (94) is hinged to the connecting plate (92).

3. A surface-coating machine for continuously conveyable carton processing according to claim 1, characterized in that: the glue coating mechanism (10) comprises a first preheating roller (101) and a glue coating roller (102) which are rotatably connected in a glue coating chamber (3), a glue groove is formed in the glue coating chamber (3), a lifting groove is formed in the glue coating chamber (3), the glue coating chamber (3) is located in the lifting groove and is in sliding connection with a lifting plate (103), a lifting assembly (12) used for driving the lifting plate (103) to lift is arranged in the glue coating chamber (3), a second preheating roller (104) and a glue coating compression roller (105) are rotatably connected to the bottom of the lifting plate (103), an auxiliary roller (106) is fixedly arranged in the glue coating chamber (3), the outer side wall of the auxiliary roller (106) is in contact with the glue coating roller (102), and a power assembly (11) used for driving the first preheating roller (101), the second preheating roller (104), the glue coating roller (102) and the glue coating compression roller (105) to rotate is arranged in the glue coating chamber (3).

4. A surface-coating machine for continuously conveyable carton processing according to claim 3, characterized in that: the power assembly (11) comprises two motors II (111) fixed in the gluing chamber (3), one ends of the preheating rollers I (101) and II (104) are respectively provided with a driving wheel (112), the output ends of the motors II (111) are respectively provided with the driving wheels (112) at corresponding positions, one ends of the gluing roller (102) and the gluing pressing roller (105) are respectively provided with a driven wheel (113), and the driven wheel (113) is connected with the driving wheel (112) at the corresponding position through a belt (114).

5. A surface-coating machine for continuously conveyable carton processing according to claim 3, characterized in that: the lifting assembly (12) comprises an electric telescopic rod (121) fixed on the top wall of the gluing chamber (3), and the telescopic end of the electric telescopic rod (121) is fixed with the lifting plate (103).

6. A surface-coating machine for continuously conveyable carton processing according to claim 1, characterized in that: the placing box (2) is connected with a lead screw (13) in a rotating mode, one end of the lead screw (13) is in threaded connection with the baffle (4), and a rotating button (14) is fixed to the top end of the lead screw (13).