阅读说明：本技术 一种针对鞋帮的均匀涂胶装置 (Even rubber coating device to upper of a shoe ) 是由 王玉瑞 于 2021-01-11 设计创作，主要内容包括：本发明公开了一种针对鞋帮的均匀涂胶装置,包括操作箱以及设置于所述操作箱中的操作腔,所述操作腔周壁上固定设有环形电动导轨,所述环形电动导轨上设有能沿其滑动的环形滑动块,本发明设有自动喷胶装置,且能顺着鞋帮内壁进行喷射,减少胶浆滴落的浪费现象,且本发明设有回收刮擦板与回收箱,使得胶浆在鞋帮表面能被均匀涂抹,并且能将多余的胶浆进行回收,减少资源的消耗,且本发明还设有确定鞋帮大小的功能,使得对鞋帮内部进行胶浆的均匀刮擦时始终贴合鞋帮内壁上,使得胶浆始终能均匀的涂抹在不同大小的鞋帮内壁表面,增大本发明适用范围,同时本发明实现了处理过程自动化,大大提高了处理效率,节省了劳动力。(The invention discloses a uniform gluing device for uppers, which comprises an operation box and an operation cavity arranged in the operation box, wherein an annular electric guide rail is fixedly arranged on the peripheral wall of the operation cavity, an annular sliding block capable of sliding along the annular electric guide rail is arranged on the annular electric guide rail, the automatic gluing device is arranged in the automatic gluing device and can spray along the inner wall of the uppers, so that the waste phenomenon of glue dripping is reduced, a recovery scraping plate and a recovery box are arranged in the automatic gluing device, so that glue can be uniformly smeared on the surface of the uppers, redundant glue can be recovered, the consumption of resources is reduced, the size of the uppers is determined, the glue can be always attached to the inner wall of the uppers when being uniformly scraped inside the uppers, so that the glue can be uniformly smeared on the surfaces of the inner walls of the uppers with different sizes all the time, the application range of the automatic gluing device is enlarged, and the automatic treatment process is, greatly improving the treatment efficiency and saving the labor force.)

1. The utility model provides a to even rubber coating device of upper of a shoe, includes the control box and set up in the control box operation chamber, its characterized in that: an annular electric guide rail is fixedly arranged on the peripheral wall of the operation cavity, an annular sliding block capable of sliding along the annular electric guide rail is arranged on the annular electric guide rail, a measuring box is fixedly arranged on the annular sliding block, a measuring cavity is arranged in the measuring box, moving grooves are symmetrically arranged on the front side and the rear side of the measuring cavity, a moving plate capable of moving along the moving groove is arranged in the moving grooves, the moving plate moves in the measuring cavity simultaneously, a sensor is fixedly arranged on the right wall of the measuring cavity, the sensor is elastically connected with the moving plate through an extrusion spring, a top pressing plate is fixedly arranged at the left end of the moving plate, a rotating shaft is rotatably arranged on the top pressing plate, a rotating wheel is fixedly arranged on the rotating shaft, a shoe sole can be placed at the bottom of the operation cavity, a shoe heel is placed on the shoe sole, an annular sliding groove is fixedly arranged, the shoe heel lifting device is characterized in that a follow-up block capable of moving along the annular chute is arranged on the annular chute, a supporting telescopic rod is fixedly arranged on the follow-up block, a connecting block is fixedly arranged above the supporting telescopic rod, a gluing box is fixedly arranged above the connecting block, a gluing cavity is arranged in the gluing box, a winding motor is fixedly arranged on the left wall of the gluing cavity, a winding shaft is rotatably arranged on the winding motor, a winding drum is fixedly arranged on the winding shaft, a stay wire is wound on the winding drum, the lower end of the stay wire is fixedly connected with a heavy object, the winding drum can be driven to rotate by the gravity of the heavy object, the height of the shoe heel can be judged by the number of rotation turns of the winding drum, a vertical telescopic rod is fixedly arranged at the top of the gluing cavity, a concave plate is fixedly arranged below the vertical telescopic rod, a transverse telescopic rod is fixedly arranged at the right end of the concave plate, the rotary motor is rotatably provided with a rotating shaft, the rotating shaft is fixedly provided with a scraper, the scraper is internally provided with allowance grooves which are vertically symmetrical, the upper end and the lower end of the scraper are fixedly provided with symmetrical recovery boxes, the recovery boxes are internally provided with recovery cavities, the communication parts of the recovery cavities and the allowance grooves are fixedly provided with one-way through valves, the left wall of the recovery cavity is fixedly provided with an extrusion telescopic rod, the right end of the extrusion telescopic rod is fixedly provided with a pushing extrusion plate, the pushing extrusion plate can divide the recovery cavities into two parts, the right side of the recovery cavities is provided with a discharge hinge, the discharge hinge is fixedly provided with a discharge plate, the discharge plate can rotate along the discharge hinge, the discharge plate is elastically connected with the recovery cavities through supporting springs, the left end of the recovery cavities is fixedly provided with a vent pipe, and the vent pipe communicates the recovery cavities with the outside, a return pipe is fixedly arranged at the top of the gluing cavity, the return pipe is positioned at the right side of the concave plate, the right end of the return pipe is fixedly connected with a communicating pipeline, the right end of the communicating pipe is fixedly connected with a gluing storage box, the inside of the communicating pipe is communicated with the inside of the return pipe and the inside of the gluing storage box, the glue spreading storage box is fixed on the right wall of the glue spreading cavity, a spray head is fixedly arranged below the glue spreading storage box, the spray head is obliquely arranged, so that when the spray head sprays out the mucilage in the gluing storage box, the mucilage can be better sprayed on the inner wall of the shoe heel, the waste caused by the splashing of the mucilage is prevented, a control valve is fixedly arranged between the spray head and the gluing storage box and is electrically connected with the coiling motor, the amount of the spray head sprayed when the heel is detected to be short is reduced, and the waste of the glue is prevented.

2. A device for uniformly gluing uppers, according to claim 1, characterised in that: the measuring box is fixedly connected with the supporting telescopic rod through a connecting rod, so that the measuring box can drive the supporting telescopic rod to move, the rotating wheels can move on the surface of the sole, and the sensor can judge the shape and size of the sole through extrusion of the extrusion spring.

3. A device for uniformly gluing uppers, according to claim 1, characterised in that: the gluing device is characterized in that a rotating hinge is arranged on the gluing storage box, a storage box rotating plate is fixedly arranged on the rotating hinge, the gluing storage box can be sealed by the storage box rotating plate, the rotating hinge can drive the storage box rotating plate to rotate, a rotating hinge is arranged on the gluing box, a gluing box rotating plate is fixedly arranged on the rotating hinge, and the gluing box rotating plate is fixedly connected with the storage box rotating plate, so that the gluing box rotating plate can drive the storage box rotating plate to rotate when rotating along the rotating hinge, and the inside of the gluing storage box can be supplemented.

4. A device for uniformly gluing uppers, according to claim 1, characterised in that: the vertical telescopic rod is arranged at the extending part of the gluing cavity, so that the vertical telescopic rod has sufficient extension amount, and the concave plate can extend into the heel.

5. A device for uniformly gluing uppers, according to claim 1, characterised in that: two pipelines in the horizontal direction extend out of the left end of the backflow pipe, the two pipelines can be connected with the corresponding recovery cavity, one-way blocking valves are fixedly arranged in the two pipelines, and redundant mucilage cannot flow back after entering the backflow pipe due to the existence of the one-way blocking valves.

Technical Field

The invention relates to an even gluing device for uppers, and mainly relates to the technical field of gluing mechanisms.

Background

The shoe upper indicates the sole, the part above the boot sole, the step of brushing the upper with the adhesive cement is the most important step in production, manual operation is adopted for brushing the upper with the adhesive cement in the current stage, the shoe upper needs to be held by one hand with a brush during manual operation, the adhesive cement can be caused to drip at the moment, waste is caused, the adhesive cement is easily smeared on the upper less or more easily during manual operation, problems can be caused in subsequent installation of the shoe, the phenomenon of degumming can be caused easily in the shoe due to less smearing, the adhesive cement can be wasted due to more smearing, the sole can be stained with the adhesive cement to affect attractiveness, time and labor are wasted during manual operation, and the invention improves the defects.

Disclosure of Invention

The invention aims to provide an even gluing device for uppers, which overcomes the problems.

The invention is realized by the following technical scheme.

The invention relates to a uniform gluing device for shoe uppers, which comprises an operation box and an operation cavity arranged in the operation box, wherein an annular electric guide rail is fixedly arranged on the peripheral wall of the operation cavity, an annular sliding block capable of sliding along the annular electric guide rail is arranged on the annular electric guide rail, a measuring box is fixedly arranged on the annular sliding block, a measuring cavity is arranged in the measuring box, moving grooves are symmetrically arranged at the front side and the rear side of the measuring cavity, moving plates capable of moving along the moving grooves are arranged in the moving grooves, the moving plates move in the measuring cavity simultaneously, a sensor is fixedly arranged on the right wall of the measuring cavity, the sensor is elastically connected with the moving plates through an extrusion spring, a top pressing plate is fixedly arranged at the left end of the moving plate, a rotating shaft is rotatably arranged on the top pressing plate, a rotating wheel is fixedly arranged on the rotating shaft, and a, the shoe sole is provided with a shoe heel, an annular sliding groove is fixedly arranged above the annular electric guide rail, the annular sliding groove is slightly higher than the shoe heel, a follow-up block capable of moving along the annular sliding groove is arranged on the annular sliding groove, a supporting telescopic rod is fixedly arranged on the follow-up block, a connecting block is fixedly arranged above the supporting telescopic rod, a gluing box is fixedly arranged above the connecting block, a gluing cavity is arranged in the gluing box, a winding motor is fixedly arranged on the left wall of the gluing cavity, a winding shaft is rotatably arranged on the winding motor, a winding drum is fixedly arranged on the winding shaft, a pull wire is wound on the winding drum, the lower end of the pull wire is fixedly connected with a heavy object, the winding drum can be driven to rotate by the gravity of the heavy object, the height of the shoe heel can be judged by the number of rotating turns of the winding drum, and a vertical telescopic rod is fixedly arranged at the, a concave plate is fixedly arranged below the vertical telescopic rod, a transverse telescopic rod is fixedly arranged at the right end of the concave plate, a rotating motor is fixedly arranged at the right end of the transverse telescopic rod, a rotating shaft is rotatably arranged on the rotating motor, a scraping plate is fixedly arranged on the rotating shaft, vertically symmetrical allowance grooves are arranged in the scraping plate, symmetrical recovery boxes are fixedly arranged at the upper end and the lower end of the scraping plate, recovery cavities are respectively arranged in the recovery boxes, one-way through valves are respectively fixedly arranged at the communication parts of the recovery cavities and the allowance grooves, extrusion telescopic rods are respectively fixedly arranged on the left wall of the recovery cavities, pushing extrusion plates are respectively fixedly arranged at the right ends of the extrusion telescopic rods and can divide the recovery cavities into two parts, discharge hinges are respectively arranged at the right sides of the recovery cavities, discharge plates are respectively fixedly arranged on the discharge hinges, and can rotate along the discharge hinges, the discharge plate is elastically connected with the recovery cavity through a supporting spring, the left end of the recovery cavity is fixedly provided with a vent pipe, the vent pipe is used for communicating the recovery cavity with the outside, the top of the gluing cavity is fixedly provided with a return pipe, the return pipe is positioned on the right side of the concave plate, the right end of the return pipe is fixedly connected with a communicating pipeline, the right end of the communicating pipeline is fixedly connected with a gluing storage box, the inside of the communicating pipeline is communicated with the inside of the return pipe and the inside of the gluing storage box, the gluing storage box is fixed on the right wall of the gluing cavity, a nozzle is fixedly arranged below the gluing storage box and is obliquely arranged, so that when the glue in the gluing storage box is sprayed out, the glue can be better sprayed on the inner wall of the shoe heel, the waste caused by the splashing of the glue is prevented, and a control valve is fixedly arranged between the nozzle and, the control valve with spiral motor electric connection for detect when the heel is shorter shower nozzle spun volume reduces, prevents the waste of mucilage.

Furthermore, the measuring box is fixedly connected with the supporting telescopic rod through a connecting rod, so that the measuring box can drive the supporting telescopic rod to move, the rotating wheels can move on the surface of the sole, and the sensor can be extruded by the extrusion spring to judge the shape and size of the sole.

Furthermore, a rotating hinge is arranged on the gluing storage box, a storage box rotating plate is fixedly arranged on the rotating hinge, the gluing storage box can be sealed by the storage box rotating plate, the rotating hinge can drive the storage box rotating plate to rotate, a rotating hinge is arranged on the gluing box, a gluing box rotating plate is fixedly arranged on the rotating hinge, and the gluing box rotating plate is fixedly connected with the storage box rotating plate, so that the gluing box rotating plate can drive the storage box rotating plate to rotate when rotating along the rotating hinge, and the inside of the gluing storage box can be supplemented.

Furthermore, the vertical telescopic rod is arranged at the extending part of the gluing cavity, so that the vertical telescopic rod has sufficient extension capacity, and the concave plate can be ensured to extend into the heel.

Furthermore, two pipelines in the horizontal direction extend out of the left end of the return pipe, both the two pipelines can be connected with the corresponding recovery cavity, one-way blocking valves are fixedly arranged in both the two pipelines, and redundant mucilage cannot flow back after entering the return pipe due to the existence of the one-way blocking valves.

The invention has the beneficial effects that: the automatic glue spraying device is arranged and can spray glue along the inner wall of the upper, so that the waste phenomenon of glue dripping is reduced, the recovery scraping plate and the recovery box are arranged, so that the glue can be uniformly smeared on the surface of the upper, the redundant glue can be recovered, the resource consumption is reduced, the size of the upper is determined, the glue can be always attached to the inner wall of the upper when the glue is uniformly scraped inside the upper, the glue can be uniformly smeared on the surfaces of the inner walls of the upper with different sizes all the time, the application range of the automatic glue spraying device is enlarged, meanwhile, the automation of the treatment process is realized, the treatment efficiency is greatly improved, and the labor force is saved.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the structure a-a in fig. 1.

Fig. 3 is an enlarged schematic view of B in fig. 1.

Fig. 4 is an enlarged schematic view of C in fig. 3.

Detailed Description

The invention will now be described in detail with reference to fig. 1-4, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The uniform gluing device for the shoe upper, which is described with reference to fig. 1-4, includes an operation box 10 and an operation chamber 11 disposed in the operation box 10, an annular electric guide rail 12 is fixedly disposed on a peripheral wall of the operation chamber 11, an annular sliding block 13 capable of sliding along the annular electric guide rail 12 is disposed on the annular electric guide rail 12, a measurement box 14 is fixedly disposed on the annular sliding block 13, a measurement chamber 25 is disposed in the measurement box 14, movement grooves 26 are symmetrically disposed on front and rear sides of the measurement chamber 25, a movement plate 27 capable of moving along the movement groove 26 is disposed in the movement groove 26, the movement plate 27 moves in the measurement chamber 25 at the same time, a sensor 29 is fixedly disposed on a right wall of the measurement chamber 25, the sensor 29 is elastically connected to the movement plate 27 through an extrusion spring 28, a top pressure plate 15 is fixedly disposed at a left end of the movement plate 27, a rotation shaft 16 is rotatably disposed on, the rotating shaft 16 is fixedly provided with a rotating wheel 17, the bottom of the operation cavity 11 can be provided with a sole 18, the sole 18 is provided with a heel 19, an annular sliding groove 21 is fixedly arranged above the annular electric guide rail 12, the annular sliding groove 21 is slightly higher than the heel 19, the annular sliding groove 21 is provided with a follow-up block 22 capable of moving along the annular sliding groove, the follow-up block 22 is fixedly provided with a supporting telescopic rod 24, a connecting block 30 is fixedly arranged above the supporting telescopic rod 24, a gluing box 31 is fixedly arranged above the connecting block 30, a gluing cavity 32 is arranged in the gluing box 31, a winding motor 33 is fixedly arranged on the left wall of the gluing cavity 32, a winding shaft 35 is rotatably arranged on the winding motor 33, a winding drum 36 is fixedly arranged on the winding shaft 35, a stay wire 37 is wound on the winding drum 36, the lower end of the stay wire 37 is fixedly connected with a heavy object 34, and the winding drum 36 can be driven to rotate by the gravity of the heavy, the height of the heel 19 can be judged through the number of rotation turns of the winding reel 36, a vertical telescopic rod 38 is fixedly arranged at the top of the gluing cavity 32, a concave plate 39 is fixedly arranged below the vertical telescopic rod 38, a transverse telescopic rod 40 is fixedly arranged at the right end of the concave plate 39, a rotating motor 41 is fixedly arranged at the right end of the transverse telescopic rod 40, a rotating shaft 42 is rotatably arranged on the rotating motor 41, a scraping plate 43 is fixedly arranged on the rotating shaft 42, vertically symmetrical allowance grooves 44 are arranged in the scraping plate 43, symmetrical recycling boxes 55 are fixedly arranged at the upper end and the lower end of the scraping plate 43, recycling cavities 56 are respectively arranged in the recycling boxes 55, one-way through valves 57 are respectively fixedly arranged at the communicating parts of the recycling cavities 56 and the allowance grooves 44, extruding telescopic rods 62 are respectively fixedly arranged on the left wall of the recycling cavities 56, and pushing extruding plates 61 are respectively fixedly arranged at the right, the pushing extrusion plate 61 can divide the recovery cavity 56 into two parts, the right side of the recovery cavity 56 is provided with a discharge hinge 59, the discharge hinge 59 is fixedly provided with a discharge plate 58, the discharge plate 58 can rotate along the discharge hinge 59, the discharge plate 58 and the recovery cavity 56 are elastically connected through a support spring 60, the left end of the recovery cavity 56 is fixedly provided with a vent pipe 63, the vent pipe 63 communicates the recovery cavity 56 with the outside, the top of the gluing cavity 32 is fixedly provided with a return pipe 48, the return pipe 48 is positioned on the right side of the concave plate 39, the right end of the return pipe 48 is fixedly connected with a communication pipe 49, the right end of the communication pipe 49 is fixedly connected with a gluing storage box 45, the inside of the communication pipe 49 is communicated with the inside of the return pipe 48 and the inside of the gluing storage box 45, and the gluing storage box 45 is fixed on the right wall of the gluing cavity 32, the fixed shower nozzle 46 that is equipped with in rubber coating storage box 45 below, shower nozzle 46 is the slant setting, makes shower nozzle 46 will can be with its better spout when the adhesive cement in the rubber coating storage box 45 spouts on the inner wall of heel 19, prevent the waste that the splashing of adhesive cement caused, shower nozzle 46 with fixed control valve 47 that is equipped with between rubber coating storage box 45, control valve 47 with spiral motor 33 electric connection makes and detects heel 19 is short-term the amount of shower nozzle 46 spun reduces, prevents the waste of adhesive cement.

Advantageously, the measuring box 14 is fixedly connected with the telescopic supporting rod 24 through a connecting rod 20, so that the measuring box 14 can drive the telescopic supporting rod 24 to move, the rotating wheel 17 can move on the surface of the sole 18, and the sensor 29 is pressed by the pressing spring 28 to judge the shape and size of the sole 18.

Advantageously, a rotating hinge 51 is arranged on the gluing storage box 45, a storage box rotating plate 50 is fixedly arranged on the rotating hinge 51, the storage box rotating plate 50 can close the gluing storage box 45, the rotating hinge 51 can drive the storage box rotating plate 50 to rotate, a rotating hinge 52 is arranged on the gluing box 31, a gluing box rotating plate 53 is fixedly arranged on the rotating hinge 52, and the gluing box rotating plate 53 is fixedly connected with the storage box rotating plate 50, so that the gluing box rotating plate 53 can drive the storage box rotating plate 50 to rotate when rotating along the rotating hinge 52, and the inside of the gluing storage box 45 can be supplemented.

Advantageously, the telescopic vertical bar 38 is provided in the extension of the gluing chamber 32, so that the telescopic vertical bar 38 has a sufficient extension to ensure that the concave plate 39 extends inside the heel 19.

Beneficially, two horizontal pipelines extend from the left end of the return pipe 48, both of the pipelines can be connected to the corresponding recovery cavity 56, and a one-way blocking valve 54 is fixedly arranged in each of the pipelines, and the existence of the one-way blocking valve 54 prevents the excess mucilage from flowing back after entering the return pipe 48.

Sequence of mechanical actions of the whole device: in an initial state, the supporting telescopic rod 24 drives the gluing box 31 to retract to the original position, the supporting spring 60 is in a natural extension state to support the discharging plate 58, the extrusion spring 28 is in a natural extension state, the sole 18 and the heel 19 are longitudinally arranged at the bottom of the operation cavity 11, the rotating wheel 17 is in contact with the concave part of the sole 18, the supporting telescopic rod 24 extends to enable the gluing box 31 to be positioned right above the sole 18, the winding motor 33 is started to rotate reversely, the winding shaft 35 and the winding drum 36 rotate reversely, the stay wire 37 is loosened, the heavy object 34 moves left and right downwards due to gravity, the winding motor 33 stops after the heavy object 34 abuts against the upper end of the sole 18, at the moment, the length of the heel 19 can be judged according to the number of rotation turns of the winding drum 36, the vertical telescopic rod 38 is started to extend to drive the concave plate 39 to move downwards, the transverse telescopic rod 40 is positioned at the center of the heel 19, the transverse telescopic, meanwhile, the rotating motor 41 is started to drive the rotating shaft 42 to rotate, the rotating shaft 42 drives the scraper 43 to rotate, then the winding motor 33 rotates in the positive direction, so that the winding shaft 35 and the winding drum 36 rotate in the positive direction to wind the pull wire 37, the heavy object 34 is pulled to return to the original position, the annular electric guide rail 12 is started to drive the annular sliding block 13 to slide along the annular sliding block, the measuring box 14 slides along the annular sliding block, at the moment, the rotating wheel 17 rolls along the surface of the sole 18, when the sole 18 is bent, extrusion occurs between the rotating wheel 17 and the sole 18, so that the top pressure plate 15 drives the moving plate 27 to move rightwards, the moving plate 27 moves rightwards along the moving groove 26 to extrude the extruding spring 28, the extruding spring 28 extrudes the sensor 29 to generate pressure data, the surface shape size of the sole 18 can be determined according to the change of the sensor 29, the supporting telescopic rod 24 is driven to move annularly by the connecting rod, meanwhile, the control valve 47 is started to spray the adhesive cement in the adhesive storage box 45 onto the surface of the heel 19 through the spray head 46, the scraper 43 rotates on the surface of the heel 19, so that the scraper 43 can rotationally coat the adhesive cement on the inner wall surface of the heel 19, excessive adhesive cement overflows into the allowance groove 44 during rotational scraping and coating, the adhesive cement flows outwards due to centrifugal force during rotation, the excessive adhesive cement enters the recovery cavity 56 from the allowance groove 44 through the one-way through valve 57 for storage, when the rotary motor 41 stops after the coating of the heel 19 is finished, the transverse telescopic rod 40 and the vertical telescopic rod 38 retract to the original position, at the moment, the left end pipeline of the return pipe 48 is communicated with the recovery cavity 56, the extrusion telescopic rod 62 is started to drive the extrusion plate 61 to move rightwards, so that the adhesive cement in the recovery cavity 56 is driven rightwards, the discharge plate 58 moves rightwards along the discharge hinge 59 due to extrusion, the supporting spring 60 is extruded, the mucilage in the recovery cavity 56 enters the return pipe 48 through the one-way blocking valve 54, after the extrusion plate 61 is pushed to move to the rightmost end, the mucilage all enters the return pipe 48, the extrusion telescopic rod 62 drives the extrusion plate 61 to retract to the original position, the discharge plate 58 is restored to the original state under the elasticity of the supporting spring 60 to seal the recovery cavity 56, the mucilage in the return pipe 48 can be collected sufficiently and then enters the gluing storage box 45 through the communicating pipeline 49 for repeated use, after the mucilage in the gluing storage box 45 is used up, an operator can rotate along the rotating hinge 52 by pulling the gluing box rotating plate 53, the storage box rotating plate 50 is driven to rotate along the rotating hinge 51 to be in a vertical state, and the mucilage in the gluing storage box 45 can be supplemented at the moment.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.