CN216827046U

CN216827046U - UV curing machine

Info

Publication number: CN216827046U
Application number: CN202220219833.7U
Authority: CN
Inventors: 钟锦海
Original assignee: Jiangmen Coordinate Photoelectric Technology Co ltd
Current assignee: Jiangmen Coordinate Photoelectric Technology Co ltd
Priority date: 2022-01-26
Filing date: 2022-01-26
Publication date: 2022-06-28
Anticipated expiration: 2032-01-26

Abstract

The utility model discloses a UV curing machine relates to UV curing technology field. Wherein, UV solidification machine includes: the upper box body is provided with an air inlet, a first air outlet and a light-transmitting through groove, the air inlet is arranged on the top wall of the upper box body, and the first air outlet is arranged on the lower edges of the two side walls of the upper box body; the air supply structure is connected with the upper box body and supplies air to the interior of the box body through an air inlet; the fixed component and the top wall of the upper box body define an air outlet cold cavity, the fixed component is provided with an air delivery channel and an installation position, and the air delivery channel is respectively communicated with the air outlet cold cavity and the first air outlet; the lamp source assembly is fixedly arranged at the mounting position; the lower box body is arranged below the upper box body, the upper box body comprises a material placing plate, and the material placing plate and the bottom wall of the lower box body limit a curing space. Through defeated wind in to UV solidification machine, defeated wind of advancing enters the forced air cooling chamber, flows along defeated wind passageway, flows to the solidification space through first air outlet afterwards in, cools down the cured substance of placing in the solidification space, realizes efficient forced air cooling.

Description

UV curing machine

Technical Field

The embodiment of the invention relates to the technical field of UV curing, in particular to a UV curing machine.

Background

The UV curing machine adopts a UV lamp box (such as an LED-UV lamp) to cure UV printing ink, UV glue, UV coating and the like, and is widely applied to a plurality of fields of communication, electronics, optics, printing and the like. The heating value of parts such as the UV lamp in the UV lamp box during operation is big, and reflector panel temperature is higher, and its UV energy reflectance is lower more, need in time dispel the heat to the UV lamp in actual production.

The UV lamp house that current UV solidification machine, its adoption includes the UV lamp, and UV lamp one side is provided with lens, and lens are used for also reflecting the UV energy that the UV lamp jetted out towards deviating from the product direction of waiting to solidify to waiting to solidify the product on to promote UV energy utilization. The higher the temperature of the reflector, the lower its UV energy reflecting capacity. In the UV lamp heat radiation structure, the heat radiation mode of the UV lamp in the top structure is water-cooling heat radiation, the heat radiation mode of the bottom structure is water-cooling heat radiation, and a certain gap is reserved between the top and the bottom to form a curing area. The middle curing area needs to avoid the phenomenon that the temperature is too high, and the irradiated object needing to be cured is burnt. Because the power of the UV LEDs is high, the temperature in the middle area is high, although water-cooled heat sinks at the top and bottom to remove heat.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a UV solidification machine can reduce the solidification region toward the regional even air supply of solidification, especially by the temperature of shining the thing, reduces the risk that the thing is shone by the roast, improves solidification efficiency by shining.

According to the utility model discloses UV solidification machine, include:

the air inlet is arranged on the top wall of the upper box body, the first air outlet is arranged on the lower edges of the two side walls of the upper box body along the second direction, and the light-transmitting through groove is arranged on the bottom wall of the upper box body;

the air supply structure is connected with the upper box body and supplies air to the interior of the box body through the air inlet;

the fixing component is arranged inside the upper box body along a first direction, the first direction is perpendicular to the second direction, the fixing component and the top wall of the upper box body define an air outlet cold cavity, the fixing component and the bottom wall of the upper box body define a lamp cavity, the fixing component is provided with an air delivery channel and an installation position, the air delivery channel is respectively communicated with the air outlet cold cavity and the first air outlet, and the installation position is arranged on the bottom wall of the fixing component;

the lamp source assembly is arranged in the lamp cavity, one end of the lamp source assembly is fixedly arranged at the installation position, and the other end of the lamp source assembly penetrates through the light-transmitting through groove, so that light generated by the lamp source assembly is irradiated out of the upper box body;

the lower box body is arranged below the upper box body and connected with the upper box body, the lower box body comprises a material placing plate, the material placing plate is arranged at the top of the lower box body, and a curing space for a cured material to pass through is formed between the material placing plate and the bottom wall of the lower box body.

According to the utility model discloses UV solidification machine has following beneficial effect at least:

the UV curing machine comprises an upper box body, an air supply structure, a fixing assembly, a lamp source assembly and a lower box body, wherein the upper box body is provided with an air inlet, a first air outlet and a light-transmitting through groove, the air inlet is formed in the top wall of the upper box body, the first air outlet is formed in the lower edges of the two side walls of the upper box body along the second direction, the light-transmitting through groove is formed in the bottom wall of the upper box body, and the air supply structure is connected with the upper box body and supplies air to the interior of the box body through the air inlet; the fixing component is arranged inside the upper box body along the second direction, the fixing component and the top wall of the upper box body define an air outlet cold cavity, the fixing component and the bottom wall of the upper box body define a lamp cavity, the fixing component is provided with an air conveying channel and an installation position, the air conveying channel is arranged on two side walls of the fixing component along the first direction, the air conveying channel is respectively communicated with the air cooling cavity and the first air outlet, and the installation position is arranged on the bottom wall of the fixing component; the lamp source assembly is arranged in the lamp cavity, one end of the lamp source assembly is fixedly arranged at the mounting position, and the other end of the lamp source assembly penetrates through the light-transmitting through groove, so that light generated by the lamp source assembly is irradiated out of the upper box body; the lower box body is arranged below the upper box body and connected with the upper box body, the upper box body comprises a material discharging plate, the material discharging plate is arranged at the top of the upper box body, and a curing space for a cured material to pass through is formed between the material discharging plate and the bottom wall of the lower box body. Through the air intake that sets up at last box top, defeated wind in to UV solidification machine through the air supply structure, defeated wind of advancing enters the forced air cooling chamber, flows along defeated wind passageway, and first air outlet and defeated wind passageway intercommunication flow to the solidification space in through first air outlet afterwards, and the condensate of placing in the solidification space is cooled down, then flows out UV solidification machine, realizes efficient forced air cooling.

According to some embodiments of the utility model, go up the box and still be provided with the slide, the slide extends along the second direction, and set up in two inside walls of box, fixed subassembly still is provided with the slider, the slider set up in the border of the both sides of fixed subassembly's roof, the slider with slide sliding fit, so that fixed subassembly can slidable mounting in the box.

According to some embodiments of the utility model, the up end of defeated wind passageway is provided with the inclined plane, the inclined plane is along keeping away from the direction downward sloping of fixed subassembly's roof.

According to some embodiments of the utility model, fixed subassembly is provided with first water-cooling channel, the both ends of first water-cooling channel are equipped with first water inlet and first delivery port, first water inlet with first delivery port set up respectively in fixed subassembly is followed the both sides wall or the same lateral wall of second direction.

According to the utility model discloses a some embodiments, first water-cooling passageway is provided with a plurality ofly, first water-cooling passageway includes a plurality of water-cooling passageway sections, and is a plurality of the water-cooling passageway section connects gradually and follows the first direction interval sets up.

According to the utility model discloses a some embodiments, go up the box and still include the light shield, the light shield set up in go up the both sides wall of box, in order to restrict the propagation route of the light that the lamp source subassembly launches.

According to some embodiments of the utility model, the box still includes water cooling mechanism down, water cooling mechanism fixed mounting in the bottom of blowing board, water cooling mechanism is provided with second water-cooling passageway, second water inlet and second delivery port, second water-cooling passageway along the second direction set up in the inside of water cooling mechanism, the second water inlet with the second delivery port set up in water cooling mechanism follows the both sides wall or the same lateral wall of second direction.

According to some embodiments of the utility model, the top of blowing board is provided with the fin, the fin extends along the first direction, the fin is provided with a plurality ofly, and is a plurality of the fin sets up, adjacent two along the second direction interval form heat dissipation channel between the fin.

According to some embodiments of the utility model, go up the box with lower box is provided with the upset subassembly along same one side of second direction, the upset subassembly includes first upset piece and second upset piece, first upset piece set up in go up the box, second upset piece set up in box down, first upset piece with second upset piece is through the round pin hub connection.

According to some embodiments of the utility model, go up the box with the box is kept away from down one side of upset subassembly is provided with buckle assembly, buckle assembly includes first buckle spare and second buckle spare, first buckle spare with the cooperation of second buckle spare joint, it is provided with to go up the box first buckle spare, the box is provided with down second buckle spare.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention is further described with reference to the following figures and examples, in which:

fig. 1 is a schematic structural diagram of a UV curing machine according to an embodiment of the present invention;

fig. 2 is a top view of a UV curing machine according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;

fig. 4 is a cross-sectional view of an upper box of the UV curing machine according to an embodiment of the present invention;

fig. 5 is an exploded view of an upper case of the UV curing machine according to an embodiment of the present invention;

fig. 6 is an exploded view of a lower box of the UV curing machine according to an embodiment of the present invention;

fig. 7 is a schematic view of a turning assembly of the UV curing machine according to an embodiment of the present invention;

fig. 8 is a partially exploded schematic view of a UV curing machine according to an embodiment of the present invention.

Reference numerals

A UV curing machine 100;

an upper case 110; an air inlet 1101; a first outlet 1102; a light-transmitting through slot 1103; an air-cooled cavity 1104; a lamp chamber 1105; a chute 1106; a mask 1107; a second air outlet 1108; a fixed component 120; a wind delivery channel 1201; a mounting location 1202; a slider 1204; a bevel 1205; a first water-cooling channel 1206; a first water inlet 1207; a first water outlet 1208; a light source assembly 130; a light-emitting mechanism 1301; a lens 1302; a lower case 140; a discharge plate 1401; heat dissipation plate 1402; a water cooling mechanism 1403; a second water-cooling channel 1404; a second water inlet 1405; a second outlet 1406; a curing space 1407; a first flipper 1501; a second flipping member 1502; a first snap 1601; a second snap 1602.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

In the description of the embodiment of the present invention, for convenience of expression, referring to fig. 1, the first direction indicates the left and right directions of the coordinate system in the figure, the second direction indicates the front and back directions of the coordinate system in the figure, and the first direction is perpendicular to the second direction.

Referring to fig. 1 to 6, the UV curing machine 100 includes an upper case 110, an air supply structure, a fixing assembly 120, a lamp source assembly 130, and a lower case 140, the upper case 110 is provided with an air inlet 1101, a first air outlet 1102, and a light-transmitting through groove 1103, the air inlet 1101 is disposed on a top wall of the upper case 110, the first air outlet 1102 is disposed on lower edges of two side walls of the upper case 110 in a left-right direction, the light-transmitting through groove 1103 is disposed on a bottom wall of the upper case 110, and the air supply structure is connected to the upper case and supplies air to the inside of the case through the air inlet. The fixing component 120 is arranged inside the upper box body 110 along the front-back direction, the fixing component 120 and the top wall of the upper box body 110 define an air outlet cold chamber 1104, the fixing component 120 and the bottom wall of the upper box body 110 define a lamp chamber 1105, the fixing component 120 is provided with an air delivery channel 1201 and a mounting position 1202, the air delivery channel 1201 is arranged on two side walls of the fixing component 120 along the left-right direction, two ends of the air delivery channel 1201 are respectively communicated with the air cooling chamber 1104 and the first air outlet 1102, and the mounting position 1202 is arranged on the bottom wall of the fixing component 120; the lamp source assembly 130 is disposed in the lamp cavity 1105, one end of the lamp source assembly 130 is fixedly mounted at the mounting position 1202, the other end penetrates through the light-transmitting through groove 1103, so that light generated by the lamp source assembly is irradiated into the upper box, the lower box 140 is disposed below the upper box 110 and connected with the upper box 110, the upper box 110 includes a discharge plate 1401, the discharge plate 1401 is disposed at the top of the upper box 110, and a curing space 1407 is defined by the discharge plate 1401 and the bottom wall of the lower box 140, so that a cured material is disposed in the curing space 1407. Through setting up air intake 1101 at last box 110 top, then defeated wind in to UV solidification machine 100 through the air supply structure, defeated wind entering air-cooled chamber 1104 flows out along defeated wind passageway 1201, and first air outlet 1102 and defeated wind passageway intercommunication flow to solidification space 1407 in through first air outlet 1102 afterwards, cool down the cured object of placing in solidification space 1407, then flow out UV solidification machine 100, realize efficient air-cooled cooling.

The air supply structure may be a fan, a blower, or other devices capable of generating air, and is not limited herein.

Wherein, lamp source subassembly 130 includes lens 1302 and luminous mechanism 1301, and luminous mechanism 1301 includes the lamp pearl, and the lamp pearl is located to lens 1302 cover, and the cooperation of the logical groove 1103 of partial wearing to locate the printing opacity to make the light that the lamp pearl produced shine out in the box 110.

In some embodiments of the present invention, as shown in fig. 3 and 4, the upper box 110 is further provided with a slide 1106, the slide 1106 extends along a front-back direction, the slide 1106 is disposed on two inner side walls of the box, the fixing component 120 is further provided with a slider 1204, the slider 1204 is disposed at edges of left and right sides of a top wall of the fixing component 120, the slider 1204 is in sliding fit with the slide 1106, so that the fixing component 120 can be slidably mounted in the box, and through the design of the slide 1106 and the slider 1204, the fixing component 120 can be more easily mounted in the upper box 110, and can be better dismounted and replaced at the same time. A gap is reserved between the sliding blocks 1204 to form a second air outlet 1108, so that the wind edge entering the air cooling cavity 1104 is simple in structural design and easy to manufacture. The number of the sliding blocks 1204 is multiple, the sliding blocks 1204 are arranged at intervals in the front-back direction, and the sliding blocks 1204 ensure the stability of the device in the installation process and after the installation.

In some embodiments of the present invention, as shown with reference to fig. 4 and 5, the upper end surface of the wind delivery channel 1201 is provided with a slope 1205, the slope 1205 sloping downward in a direction away from the top wall of the stationary assembly 120. The inclined surface 1205 is inclined to facilitate the air to flow through the air duct 1201 rapidly and then to flow out of the first outlet opening 1102 into the curing space 1407. it can be understood that the curing object is placed in the curing space 1407, and the curing space 1407 is used as a curing area.

In some embodiments of the present invention, referring to fig. 4 and 5, the fixing assembly 120 is provided with a first water cooling channel 1206, a first water inlet 1207 and a first water outlet 1208, the first water cooling channel 1206 is disposed inside the fixing assembly 120 along the front-back direction, and the first water inlet 1207 and the first water outlet 1208 are respectively disposed on two side walls or the same side wall of the fixing assembly 120 along the front-back direction. It can be understood that, the two ends of the first water-cooling channel 1206 are provided with a first water inlet 1207 and a first water outlet 1208, and the first water inlet 1207 and the first water outlet 1208 are respectively arranged on two side walls or the same side wall of the fixing component along the front-back direction. Water enters the water cooling channel from the first water inlet 1207 and then flows out from the first water outlet 1208 to cool the light-emitting mechanism 1301, so that the light-emitting mechanism 1301 is cooled by cooling water in a circulating manner; the structure has fast heat dissipation, greatly improves the heat dissipation effect of the light-emitting mechanism 1301, ensures that the damage rate of the light-emitting mechanism 1301 is low, and prolongs the service life of the light-emitting mechanism 1301.

The light-emitting structure adopts an LED light source, and can also adopt a high-pressure mercury lamp, a metal halogen lamp and the like.

In some embodiments of the present invention, referring to fig. 4 and 5, the first water-cooling channel 1206 comprises a plurality of water-cooling channel segments, which are sequentially connected and spaced apart from each other along the left-right direction. The overall water cooling area is enlarged, the heat dissipation efficiency is increased, the heat dissipation effect of the light-emitting mechanism 1301 is improved, and the service life of the UV curing machine 100 is prolonged.

In some embodiments of the present invention, referring to fig. 4 and 5, the upper housing 110 further includes a light shield 1107, and the light shield 1107 is disposed on two sidewalls of the upper housing 110 to limit a propagation path of light emitted from the light source assembly 130. The light emitted by the light-emitting mechanism 1301 is prevented from irradiating the UV curing machine 100 through the first air outlet 1102, which may affect the health of the operator.

The bottom of the mask 1107 is further provided with a second air outlet 1108, and the second air outlet 1108 is communicated with the first air outlet 1102. Meanwhile, a second air outlet 1108 is formed in the bottom of the light shield 1107, so that the wind energy passing through the curing space 1407 can flow out of the curing machine quickly, the subsequent air inlet is prevented from being influenced, and the overall heat dissipation efficiency is improved.

In some embodiments of the present invention, referring to fig. 6, the lower box 140 further includes a water cooling mechanism 1403, the water cooling mechanism 1403 is fixedly installed at the bottom of the material discharging plate 1401, the water cooling mechanism 1403 is provided with a second water cooling channel 1404, a second water inlet 1405 and a second water outlet 1406, the second water cooling channel 1404 is disposed inside the water cooling mechanism 1403 along the front-back direction, and the second water inlet 1405 and the second water outlet 1406 are disposed on two side walls or the same side wall of the water cooling mechanism 1403 along the front-back direction. The cooling water enters the second water cooling channel 1404 from the second water inlet 1405 and then flows out of the second water outlet 1406 to perform water cooling heat dissipation on the discharge plate 1401, the discharge plate 1401 is irradiated by the light-emitting mechanism 1301, the temperature is raised, condensate placed on the discharge plate 1401 can be influenced, the water cooling of the discharge plate 1401 is realized by adding the water cooling mechanism 1403, the cooling water circulation cooling of the discharge plate 1401 is achieved, the structure is fast in heat dissipation, the heat dissipation effect of the discharge plate 1401 is greatly improved, the condensate damage rate on the discharge plate 1401 is low, and the loss is reduced.

In some embodiments of the present invention, as shown in fig. 6, the top of the material placing plate 1401 is provided with a plurality of cooling fins extending in the front-back direction, and the plurality of cooling fins are spaced apart from each other in the left-right direction, so that a cooling channel is formed between two adjacent cooling fins. The design of the radiating fins increases the radiating area of the discharging plate 1401, improves the radiating efficiency, and simultaneously, the radiating channel formed between two adjacent radiating fins provides a good flowing path for cooling air, so that the radiation of the cooling air to the curing space 1407 is increased.

In some embodiments of the present invention, referring to fig. 1, 5, 6 and 7, the upper case 110 and the lower case 140 are provided with a turning assembly along the same side of the front-back direction, so that the upper case 110 can be turned over relative to the lower case 140, the turning assembly includes a first turning piece 1501 and a second turning piece 1502, the first turning piece 1501 is disposed on the upper case 110, the second turning piece 1502 is disposed on the lower case 140, and the first turning piece 1501 is connected to the second turning piece 1502 through a pin. The opening of the UV curing machine 100 is facilitated, the structure is simple, and the installation is convenient.

The hinge can be adopted by the turnover assembly, the hinge comprises a first hinge and a second hinge, the first turnover part 1501 is the first hinge, and the second turnover part 1502 is the second hinge, so that the turnover assembly is simple to manufacture and convenient to use.

In some embodiments of the present invention, referring to fig. 6 and 8, a fastening component is disposed on one side of the upper case 110 and the lower case 140 away from the flipping component, the fastening component includes a first fastening component 1601 and a second fastening component 1602, the first fastening component 1601 is matched with the second fastening component 1602, so that the upper case 110 is fixed relative to the lower case 140, the upper case 110 is disposed with the first fastening component 1601, and the lower case 140 is disposed with the second fastening component 1602. In the working process of the UV curing machine 100, the first fastener 1601 is in snap fit with the second fastener 1602, so as to limit the relative positions of the upper box 110 and the lower box 140 of the UV curing machine 100, and ensure the stability of the UV curing machine 100 in the working state.

The first buckling piece 1601 is one of a clamping block and a clamping groove which are mutually clamped and matched, the second buckling piece 1602 is the other of the clamping block and the clamping groove, assembly and disassembly are easy, operation is simple, and assembly time is saved.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A UV curing machine, comprising:

the air inlet is arranged on the top wall of the upper box body, the first air outlet is arranged on the lower edges of the two side walls of the upper box body along a first direction, and the light-transmitting through groove is arranged on the bottom wall of the upper box body;

the fixing component is arranged inside the upper box body along a second direction, the second direction is perpendicular to the first direction, the fixing component and the top wall of the upper box body define an air outlet cold cavity, the fixing component and the bottom wall of the upper box body define a lamp cavity, the fixing component is provided with an air delivery channel and an installation position, the air delivery channel is respectively communicated with the air outlet cold cavity and the first air outlet, and the installation position is arranged on the bottom wall of the fixing component;

2. The UV curing machine according to claim 1, wherein the upper box body is further provided with a slide way, the slide way extends along the second direction and is arranged on two inner side walls of the box body, the fixing assembly is further provided with a slide block, the slide block is arranged on edges of two sides of a top wall of the fixing assembly, and the slide block is in sliding fit with the slide way so that the fixing assembly can be slidably arranged in the box body.

3. The UV curing machine according to claim 1, wherein an upper end surface of the air delivery passage is provided with a slope that is inclined downward in a direction away from a top wall of the fixing assembly.

4. The UV curing machine according to claim 1, wherein the fixing component is provided with a first water cooling channel, a first water inlet and a first water outlet are arranged at two ends of the first water cooling channel, and the first water inlet and the first water outlet are respectively arranged on two side walls or the same side wall of the fixing component along the second direction.

5. The UV curing machine according to claim 4, wherein the first water-cooling channel comprises a plurality of water-cooling channel sections, and the plurality of water-cooling channel sections are sequentially connected and are arranged at intervals along the first direction.

6. The UV curing machine of claim 1, wherein the upper box further comprises light shields disposed on two side walls of the upper box to limit the propagation path of the light emitted from the light source assembly.

7. The UV curing machine according to claim 4, wherein the lower box further comprises a water cooling mechanism, the water cooling mechanism is fixedly mounted at the bottom of the material placing plate, the water cooling mechanism is provided with a second water cooling channel, a second water inlet and a second water outlet, the second water cooling channel is arranged inside the water cooling mechanism along a second direction, and the second water inlet and the second water outlet are arranged on two side walls or the same side wall of the water cooling mechanism along the second direction.

8. The UV curing machine according to claim 1, wherein a plurality of heat dissipation fins are arranged at intervals along the second direction, and a heat dissipation channel is formed between two adjacent heat dissipation fins.

9. The UV curing machine according to claim 8, wherein a turnover assembly is disposed on the same side of the upper box body and the lower box body along the second direction, the turnover assembly includes a first turnover member and a second turnover member, the first turnover member is disposed on the upper box body, the second turnover member is disposed on the lower box body, and the first turnover member and the second turnover member are connected through a pin shaft.

10. The UV curing machine according to claim 9, wherein a fastening component is disposed on a side of the upper box body and a side of the lower box body away from the turnover component, the fastening component includes a first fastening component and a second fastening component, the first fastening component and the second fastening component are in fastening engagement, the first fastening component is disposed on the upper box body, and the second fastening component is disposed on the lower box body.