CN108677423B

CN108677423B - Cloth dyeing equipment

Info

Publication number: CN108677423B
Application number: CN201810518155.2A
Authority: CN
Inventors: 施鑫镛
Original assignee: Nantong Dongchen Clothing Co Ltd
Current assignee: Nantong Dongchen Clothing Co.,Ltd.
Priority date: 2018-05-27
Filing date: 2018-05-27
Publication date: 2020-12-08
Anticipated expiration: 2038-05-27
Also published as: CN108677423A

Abstract

The invention discloses cloth dyeing equipment, which comprises a box body, a dye vat arranged in the box body and a base arranged at the bottom of the box body, wherein a top cover which is detachably connected is arranged at the top of the box body; the invention can conveniently take out the cloth from the dye vat and dry the dyed cloth, and has the advantages of high cloth dyeing efficiency, fast drying treatment, convenient use, easy production and high working efficiency.

Description

Cloth dyeing equipment

Technical Field

The invention belongs to the field of printing and dyeing, and particularly relates to cloth dyeing equipment.

Background

The cloth dyeing refers to dyeing cloth into required colors, and is generally finished through a dyeing workshop. In order to improve the production efficiency, an automatic cloth dyeing machine is appeared, the cloth dyeing equipment on the market is inconvenient to take out the cloth from the dye vat after the cloth is dyed, the taken-out cloth needs to be aired for a long time to dry the cloth, the working efficiency is low, and the automatic cloth dyeing machine is not beneficial to production, processing and use.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides the cloth dyeing equipment which can dry the cloth after the cloth is dyed and has high working efficiency.

In order to achieve the purpose, the invention adopts the following technical scheme: a cloth dyeing device comprises a box body, a dye vat arranged in the box body and a base arranged at the bottom of the box body, wherein a top cover which is detachably connected with the top of the box body is arranged at the top of the box body, the dye vat is arranged at the bottom of the box body, a liftable material carrying box is arranged in the box body, water permeable holes are respectively formed in the side wall and the bottom surface of the material carrying box, an automatic lifting device is arranged on the base, and a drying device is arranged above the dye vat; the automatic lifting device and the material carrying box are mutually matched to realize the lifting action of the material carrying box; placing cloth to be dyed in a material carrying box, lowering the material carrying box into a dye vat through an automatic lifting device, enabling dye liquor to enter a box body of the material carrying box through a water permeable hole in the material carrying box, dyeing the cloth in the material carrying box, enabling the cloth to complete a dip-dyeing process in the dye vat, coloring the cloth, lifting the material carrying box through the automatic lifting device after the cloth is dip-dyed for a certain time, taking the cloth out of the dye vat, lifting the material carrying box to a drying device through the automatic lifting device, drying the cloth through the drying device, helping the dyed cloth to be rapidly dried, shortening the drying time of the cloth and improving the working efficiency; the cloth is carried by the material carrying box, so that the cloth can be conveniently taken out of the dye vat, dye liquor dripped by the material carrying box in the ascending process falls into the dye vat below the material carrying box, a large amount of waste of the dye liquor is prevented, the cloth can be quickly dried after the cloth is dyed by the drying device, the working efficiency of equipment is improved, and the cloth is beneficial to production, processing and use in a factory; the top cover is detachably connected, so that the device in the box body is more convenient to mount, dye is convenient to fill into the dye vat, and the equipment is more convenient to use; the base plays the supporting role to the box, promotes the holistic stability of equipment, increases the practicality of equipment.

Preferably, the automatic lifting device comprises two groups of screw rods arranged on two sides of the box body, two groups of nuts respectively sleeved on the two groups of screw rods, and a screw rod motor arranged in the base; the nut is connected with the screw rod through threads, the screw rod is driven by a screw rod motor to rotate, and the nut sleeved on the screw rod ascends when the screw rod rotates through the matching of the threads, so that the automatic lifting device can automatically lift; the screw motor drives the two groups of screws to synchronously rotate, so that nuts respectively sleeved on the two groups of screws synchronously ascend, the loading box is driven to ascend and descend, and cloth is conveniently dyed and taken out.

Preferably, an equipment cavity is arranged in the base, an input wheel is arranged at the bottom of the screw rod, and the screw rod motor is in transmission fit with the input wheel through a transmission belt; the screw motor is arranged in the equipment cavity, and is arranged in the equipment cavity, so that the screw motor is protected, and the influence on the service life of the screw motor caused by the interference of external factors is avoided; a lead screw motor matches with the input wheel of two sets of lead screws respectively through the conveyer belt, gives the lead screw with the kinetic energy transmission of lead screw motor, makes the lead screw rotate, realizes automatic lifting device's raising and lowering functions, adopts a motor simultaneous control two sets of lead screws, ensures that two sets of lead screws rotate in step, makes two sets of nuts can rise in step, and reduces equipment cost, makes equipment more economical and effective.

Preferably, a bearing plate is arranged above the material loading box, a box cover is arranged at the top of the material loading box, two ends of the bearing plate are respectively provided with a connecting rod, and the other ends of the two groups of connecting rods are respectively connected with the two groups of nuts; the bearing plate is connected with the material carrying box, the connecting rod penetrates through the side wall of the box body, one end of the connecting rod is arranged in the box body, the other end of the connecting rod is arranged outside the box body, a guide groove for the connecting rod to move is formed in the side wall of the box body, the connecting rod can move up and down in the guide groove, when the nut moves along the screw rod, the bearing plate moves together with the nut through the effect of the connecting rod, the bearing plate is provided with the material carrying box to move synchronously, and the material carrying.

Preferably, the side wall of the loading box is provided with box lugs, the bottom surface of the bearing plate is provided with supporting pieces, and the supporting pieces are matched with the box lugs; the bearing plate passes through the cooperation of support piece and case ear and links to each other with carrying the workbin, and the case ear is located and is carried workbin lateral wall outward flange, for support piece provides the impetus, and the support piece bottom is equipped with the inflection portion for block the case ear, when the bearing plate up moved, the inflection portion of support piece blocked the case ear bottom, drives and carries the workbin and together up-motion, makes and carries the workbin and rise from the dye vat, takes out it after the cloth dyeing of being convenient for.

Preferably, the bearing plate is provided with a driving motor, the box cover and the box cover are provided with a first driving wheel and a plurality of second driving wheels, and an output shaft of the driving motor penetrates through the bearing plate and is in transmission fit with the first driving wheel; the driving motor can drive the material carrying box to rotate, when the material carrying box is positioned in the dye vat, the driving motor works to drive the material carrying box to rotate, dye liquor is stirred to enable the dye liquor to better enter the material carrying box and to better contact with the cloth, and the cloth is dyed; when carrying the workbin and rising and drying, driving motor works once more, drives and carries the workbin and begins to rotate, and the centrifugal force through carrying the workbin rotation production cooperates drying device to carry out dehydration drying process to dying cloth, makes the quick drying that dyes cloth, promotes and dyes cloth dyeing efficiency, increases equipment work efficiency.

Preferably, the first driving wheel is in transmission fit with the second driving wheel, and the second driving wheel is in transmission fit with the box cover; case lid and year workbin fixed connection, driving motor transmits power for first drive wheel, first drive wheel transmits driving motor's power for the second drive wheel, the second drive wheel transmits power for the case lid, the case lid drives year workbin and rotates, the case lid inner wall is equipped with the internal tooth, with the teeth of a cogwheel intermeshing of second drive wheel, carry out power transmission, it makes power more accurate in the transmission process to set up a plurality of second drive wheels, driving motor power directly not transmits to year workbin, avoid first drive wheel moment of torsion too big, the power transmission is shakiness, easily cause the damage to first drive wheel, cooperation through first drive wheel and second drive wheel, make the transmission more stable, extension equipment life.

Preferably, the drainage plate is arranged on the outer side of the water permeable hole and is obliquely arranged, and the oblique direction of the drainage plate is the same as the rotation direction of the driving motor; the drainage plate is located the hole one end of permeating water, and the drainage plate is the arc design, and when driving motor drove the workbin and rotate, through the drainage plate with the dye liquor introduction hole of permeating water, the drainage plate slope sets up the direction the same with driving motor rotation direction, makes the entering into of the workbin that the dye liquor can be better when the dye vat internal rotation carries the workbin in, makes the dye liquor can be abundant with the cloth contact, carries out dyeing to the cloth.

Preferably, a stirring motor is arranged at the bottom of the dye vat, stirring blades are arranged on an output shaft of the stirring motor, and the rotation direction of the stirring motor is opposite to that of the driving motor; stirring motor drive stirring fan blade stirs the dye liquor, makes the dye liquor in the dye vat form the vortex, because stirring motor direction of rotation is opposite with driving motor direction of rotation, makes vortex direction and year feed bin direction of rotation opposite, and the dye liquor is changeed and is collided the drainage board and is led into the hole of permeating water, makes the cloth fully with the contact promotion of dye liquor cloth efficiency.

Preferably, a push rod is arranged above the nut, and the outer edge of the top cover protrudes out of the outer side wall of the box body; after the completion of dying cloth is dried, when needing to dye cloth and take out the box, the lead screw rotates and makes the nut continue to rise, and push rod and top cap outward flange on the nut contact, and the push rod upwards promotes the top cap, drives the top cap up-moving together, makes the top cap open to carry the workbin to rise to the box top, will carry the cloth in the workbin to take out, conveniently dye taking of cloth, easy operation.

The invention has the following advantages: can be convenient take out the cloth from the dye vat to carry out drying process to the back cloth of dyeing, it is efficient to dye the cloth, and drying process is fast, and convenient to use does benefit to production, and work efficiency is high.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an enlarged view of fig. 1A.

FIG. 3 is a cross-sectional view of the body of the carrier box of the present invention.

FIG. 4 is a top view of the lid of the bin of the present invention.

FIG. 5 is a top view of the stirring blade of the present invention.

Fig. 6 is a bottom view of the inventive bin.

Detailed Description

In order to make the technical solutions of the present invention better understood, 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.

As shown in fig. 1-6, a cloth dyeing apparatus comprises a box body 1, a dye vat 4 arranged in the box body 1 and a base 13 arranged at the bottom of the box body 1, wherein a top cover 11 detachably connected with the top of the box body 1 is arranged at the top of the box body 1, the top cover 11 covers the box body 1 and is contacted with the top of the side wall of the box body 1, the dye vat 4 is arranged at the bottom of the box body 1, a liftable material carrying box 3 is arranged in the box body 1, the material carrying box 3 is used for placing cloth, a movable door is arranged on the side wall of the material carrying box 3, the cloth to be treated can be placed in the material carrying box 3 or the dyed cloth can be taken out of the material carrying box 3 through the movable door, the cloth is placed in the material carrying box 3 and enters the box body 1 to be dyed, water permeable holes 32 are respectively arranged on the side wall and the bottom surface of the material carrying box 3, an automatic lifting device is, the drying device 12 is arranged on the inner wall of the box body 1, the drying device 12 is a blower, the blower is a blower which is normally purchased on the market, the blower can blow hot air to dry the dyed cloth, and the drying device 12 is provided in a plurality of ways, so that the drying effect is improved, and the dyed cloth can be dried quickly; the automatic lifting device is matched with the material loading box 3 to enable the material loading box 3 to realize lifting movement; placing the cloth to be treated in a material carrying box 3 through a movable door, descending the material carrying box 3 through an automatic lifting device to enable the material carrying box 3 to enter a dye vat 4, enabling dye liquor in the dye vat 4 to enter the material carrying box 3 through a water permeable hole 32 and to contact with the cloth in the material carrying box 3 to enable the cloth to be soaked in the dye liquor, dip-dyeing the cloth, driving the material carrying box 3 to rise through the automatic lifting device after the cloth is dip-dyed in the dye vat 4 for a certain time, enabling the material carrying box 3 to rise to be lifted to a position corresponding to a drying device 12, carrying out hot air blowing on the drying device 12 to dry the cloth, carrying out drying treatment on the cloth, carrying out lifting on the material carrying box 3 to bring out a part of dye liquor, enabling the dye liquor in the material carrying box 3 to fall through the water permeable hole 32 in the bottom surface of the material carrying box 3, enabling the dye liquor to fall into the dye vat 4 arranged below the box body, and recycling the dye liquor to avoid large amount; drying device 12 is when carrying out the hot blow and carrying out the drying to the cloth, and hot-blast hole of permeating water that is used enters into in carrying hopper 3 and contacts with the cloth that carries in the hopper 3, makes the cloth carry out rapid draing, carries hopper 3 to stay certain time in drying device 12 corresponding position department and accomplishes continuing to rise after the drying to the cloth, will carry hopper 3 to rise out box 1, carries hopper 3 to take the cloth to rise out box 1, and the operating personnel of being convenient for will carry the cloth in the hopper 3 to take out.

The automatic lifting device comprises two groups of screw rods 21 arranged at two sides of the box body 1, two groups of nuts 22 respectively sleeved on the two groups of screw rods 21 and a screw rod motor 23 arranged in the base 13, an equipment cavity 131 is arranged in the base 13, an input wheel 211 is arranged at the bottom of the screw rod 21, the screw motor 23 is in transmission fit with the input wheel 211 through a transmission belt 24, the screw motor 23, the input wheel 211 and the transmission belt 24 are all arranged in the equipment cavity 131, the screw motor 23 is arranged in the equipment cavity 131, the occupied volume of the equipment is saved, the screw motor 23, the input wheel 211 and the transmission belt 24 are protected, the influence of the external influence on the lifting motion of the automatic lifting device when the screw motor 23 is in transmission is avoided, two groups of screw rods 21 are driven by a screw rod motor 23, so that the two groups of screw rods 21 can synchronously rotate, and the material loading box 3 can stably ascend; when the loading box 3 is lowered into the dye vat 4, the screw rod motor 23 works, the transmission belt 24 transmits the kinetic energy of the screw rod motor 23 to the input wheel 211, so that the two groups of screw rods 21 synchronously rotate, the nut 22 is matched with the screw rods 21 through threads, when the screw rods 21 rotate, the nut 22 moves down along the screw rods 21, and the loading box 3 is lowered into the dye vat 4; when the loading box 3 is lifted from the dye vat 4, the screw rod motor 23 is driven to rotate reversely, so that the nut 22 is lifted along the screw rod 21, the loading box 3 is lifted, and the loading box 3 can dip-dye the cloth to be treated or take out the dip-dyed cloth.

A bearing plate 31 is arranged above the material loading box 3, a box cover 33 is arranged at the top of the material loading box 3, two ends of the bearing plate 31 are respectively provided with a connecting rod 311, the other ends of the two groups of connecting rods 311 are respectively connected with the two groups of nuts 22, the connecting rod 311 penetrates through the side wall of the box body 1, one end of the connecting rod 311 is arranged in the box body 1 and connected with the bearing plate 31, the other end of the connecting rod 311 is arranged outside the box body 1 and connected with the nuts 22, the side wall of the box body 1 is provided with a guide groove for the connecting rod 311 to move, the connecting rod 311 can move up and down in the guide groove, the guide groove has a limiting effect on the connecting rod 311, the nuts 22 cannot drive the connecting rod 311 to rotate along with the lead screw 21, so that the nuts 22 can; the side wall of the material carrying box 3 is provided with box lugs 34, the box lugs 34 are arranged on the outer edge of the side wall of the material carrying box 3, the box lugs 34 and the material carrying box 3 are identical in outline shape, the bottom surface of the bearing plate 31 is provided with supporting pieces 313, the supporting pieces 313 are matched with the box lugs 34, the box lugs 34 provide force application points for the supporting pieces 313, the supporting pieces 313 are fixedly connected to the bottom surface of the bearing plate 31, the bottom of the supporting pieces 313 is provided with a folding back part, the top surfaces of the folding back parts are contacted with the bottom surfaces of the box lugs 34, when the nut 22 drives the bearing plate 31 to move upwards, the box lugs 34 are clamped by the supporting pieces 313, so that the material carrying box 3 is driven to move upwards, and the automatic lifting device drives the material carrying box 3; when the loading box 3 enters the dye vat 4, the bearing plate 31 is in contact with the side wall of the dye vat 4, the outer edge of the bearing plate 31 protrudes out of the outer surface of the side wall of the dye vat 4, the side wall of the dye vat 4 supports the bearing plate 31, and meanwhile, the nut 22 is limited, so that the nut 22 cannot continuously descend along the screw rod 21, and the cloth in the loading box 3 is subjected to dip dyeing treatment in the dye vat 4.

The bearing plate 31 is provided with a driving motor 312, the box cover 33 is provided with a first driving wheel 331 and a plurality of second driving wheels 332, an output shaft of the driving motor 312 penetrates through the bearing plate 31 to be in transmission fit with the first driving wheel 331, the first driving wheel 331 is in transmission fit with the second driving wheels 332, and the second driving wheels 332 are in transmission fit with the box cover 33; the box cover 31 is fixedly connected with the material carrying box 3, the driving motor 312 transmits power to the first driving wheel 331, the first driving wheel 331 transmits the power of the driving motor 312 to the second driving wheel 332, the second driving wheel 332 transmits the power to the box cover 31, the box cover 31 drives the material carrying box 3 to rotate, inner teeth are arranged on the inner wall of the box cover 31 and meshed with the gear teeth of the second driving wheel 332 for power transmission, the plurality of second driving wheels 332 are arranged to enable the power to be more accurate in the transmission process, the power of the driving motor 312 is not directly transmitted to the material carrying box 3, the situation that the first driving wheel 331 has overlarge torque and unstable power transmission is easy to damage the first driving wheel 331 is avoided, the transmission is more stable through the matching of the first driving wheel 331 and the second driving wheel 332, and the service life of the equipment; when the loading box 3 is lowered into the dye vat 4, the driving motor 312 starts to work, power is transmitted to the first driving wheel 331, the first driving wheel 331 transmits power to the second driving wheel 332 through gear engagement, the second driving wheel 332 transmits power to the box cover 33 through gear engagement, so that the box cover 33 drives the loading box 3 to rotate, the loading box 3 rotates in the dye vat 4, dye liquor flows, the dye liquor enters the loading box 3 through the water permeable holes 32 better, and the dye liquor is in full contact with cloth in the loading box 3, and the cloth dip dyeing effect is improved; when the cloth is dried after being dyed, the material carrying box 3 rises to a joint point matched with the drying device 12, the driving motor 312 works again, the material carrying box 3 is driven to rotate, the material carrying box 3 forms centrifugal force due to rotation, water in the cloth is thrown out through the centrifugal force, the drying device 12 is matched to dry the cloth together, the material carrying box 3 enables hot air flow to enter the material carrying box 3 through the water permeable holes 32 in the rotating process to be in contact with the cloth in the material carrying box 3, under the combined action of the driving motor 312 and the drying device 12, the cloth is assisted to be dried quickly, and the working efficiency of the equipment is improved.

The outer side of the water permeable hole 32 is provided with a drainage plate 321, the drainage plate 321 is obliquely arranged, the drainage plate 321 is arranged at one end of the water permeable hole 32, the drainage plate 32 is of an arc-shaped structure, the oblique direction of the drainage plate 321 is the same as the rotating direction of the driving motor 312, the bottom of the dye vat 4 is provided with a stirring motor 41, the stirring motor 41 is a waterproof motor which is normally purchased in the market, a stirring fan blade 412 is arranged on an output shaft 411 of the stirring motor, and the rotation direction of the stirring motor 4 is opposite to that of the driving motor 312; when the driving motor 312 drives the loading box 3 to rotate, the stirring motor 41 drives the stirring fan blades 412 to rotate, the dye liquor in the dye vat 4 forms a vortex while the stirring fan blades 412 rotate, the direction of the vortex is the same as the rotation direction of the stirring motor 41 and is opposite to the rotation direction of the loading box 3, the dye liquor continuously impacts on the drainage plate 321 due to the fact that the direction of the vortex is opposite to the rotation direction of the loading box 3, the dye liquor is guided into the water permeable holes 32 through the drainage plate 321, the dye liquor enters the loading box 3 and contacts with the cloth, the cloth is better contacted with the dye liquor, and the cloth dip dyeing effect is improved; when drying the cloth, the driving motor 312 drives the material loading box 3 to rotate, and the hot air flow is better introduced into the water permeable holes 32 under the action of the drainage plate 321, enters the material loading box 3 and contacts with the cloth, so that the cloth is quickly dried.

A push rod 221 is arranged above the nut 22, and the outer edge of the top cover 11 protrudes out of the outer side wall of the box body 1; when the push rod 221 upper end is provided with the push block, the push block is arranged to enable the push block to be better matched with the top cover 11, when the cloth is required to be taken out of the box body 1 after being dried, the screw rod motor 23 continues to work, the nut 22 continues to move upwards along the screw rod 21 until the push block at the top of the push rod 221 is contacted with the bottom surface of the outer edge of the top cover 11, the nut 22 continues to ascend, the push rod 221 upwards pushes the top cover 11, the top cover 11 is opened, the situation that the top cover 11 blocks the material carrying box 3 to move upwards is avoided, the material carrying box 3 can be lifted from the box body 1, and the cloth in the material carrying box 3 can be.

The folding part of the supporting part 313 is also provided with a slot hole, a ball 3131 is arranged in the slot hole, the upper surface of the ball 3131 is in contact with the box lug 34, the ball 3131 can roll in the slot hole, and when the driving motor 312 drives the material carrying box 3 to rotate through the arrangement of the ball 3131, the sliding friction between the box lug 34 and the supporting part 313 is converted into rolling friction, so that the friction between the box lug 34 and the supporting part 313 is reduced, and the driving motor 312 can better drive the material carrying box 3 to rotate.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a cloth dyeing equipment, includes box (1), locates dye vat (4) in box (1) and locating base (13) of box (1) bottom, box (1) top is equipped with top cap (11) that can dismantle the connection, dye vat (4) are located box (1) bottom, its characterized in that: a liftable material carrying box (3) is arranged in the box body (1), water permeable holes (32) are respectively formed in the side wall and the bottom surface of the material carrying box (3), an automatic lifting device is arranged on the base (13), and a drying device (12) is arranged above the dye vat (4);

the automatic lifting device comprises two groups of screw rods (21) arranged on two sides of the box body (1), two groups of nuts (22) respectively sleeved on the two groups of screw rods (21) and a screw rod motor (23) arranged in the base (13);

a bearing plate (31) is arranged above the material loading box (3), a box cover (33) is arranged at the top of the material loading box (3), two ends of the bearing plate (31) are respectively provided with a connecting rod (311), and the other ends of the two groups of connecting rods (311) are respectively connected with the two groups of nuts (22);

the side wall of the material loading box (3) is provided with box lugs (34), the bottom surface of the bearing plate (31) is provided with a supporting piece (313), the bottom of the supporting piece (313) is provided with a folding part, the folding part of the supporting piece (313) is also provided with a slotted hole, a ball (3131) is arranged in the slotted hole, the upper surface of the ball (3131) is in contact with the box lugs (34), and the supporting piece (313) is matched with the box lugs (34);

a driving motor (312) is arranged on the bearing plate (31), a first driving wheel (331) and a plurality of second driving wheels (332) are arranged on the box cover (33), and an output shaft of the driving motor (312) penetrates through the bearing plate (31) to be in transmission fit with the first driving wheel (331); the first driving wheel (331) is in transmission fit with the second driving wheel (332), and the second driving wheel (332) is in transmission fit with the box cover (33);

the outer side of the water permeable hole (32) is provided with a drainage plate (321), the drainage plate (321) is obliquely arranged, and the oblique direction of the drainage plate (321) is the same as the rotation direction of the driving motor (312);

the bottom of the dye vat (4) is provided with a stirring motor (41), an output shaft (411) of the stirring motor is provided with stirring blades (412), and the direction of the stirring motor (41) is opposite to that of the driving motor (312).

2. A cloth dyeing apparatus according to claim 1, characterized in that: the automatic feeding device is characterized in that an equipment cavity (131) is arranged in the base (13), an input wheel (211) is arranged at the bottom of the screw rod (21), and the screw rod motor (23) is in transmission fit with the input wheel (211) through a transmission belt (24).

3. A cloth dyeing apparatus according to claim 1, characterized in that: a push rod (221) is arranged above the nut (22), and the outer edge of the top cover (11) protrudes out of the outer side wall of the box body (1).