CN112958750B

CN112958750B - Aluminum alloy ingot casting automation line

Info

Publication number: CN112958750B
Application number: CN202110140276.XA
Authority: CN
Inventors: 费久港; 李成刚; 李继军
Original assignee: Sichuan Ouya High Strength Aluminium Industry Co ltd
Current assignee: Sichuan Ouya High Strength Aluminium Industry Co ltd
Priority date: 2021-02-02
Filing date: 2021-02-02
Publication date: 2022-08-30
Anticipated expiration: 2041-02-02
Also published as: CN112958750A

Abstract

The invention discloses an automatic production line of aluminum alloy ingots, wherein a first motor is connected with a rotating plate through a first rotating rod, a scraping plate is arranged on the other side of the rotating plate, a first air cylinder is fixedly connected to the rear part of the scraping plate, a first conveying belt is arranged on the lower part of the front part of a conveying channel, a tire groove is fixedly connected to the surface of the first conveying belt, a supporting plate is slidably connected to the side end of a tire mold, a top plate is welded on one side of the upper part of the supporting plate, a spring is fixedly connected to one side of the lower part of the top plate, a sliding rod is arranged on the other side of the lower part of the top plate, the sliding rod is rotatably connected with a fixed column through a rotating block, the fixed column is connected with a second rotating rod through a rotating disc, one end of the second rotating rod is fixedly connected with a second motor, a third supporting frame is arranged on the front part of the second conveying belt, a fixed plate is welded on the upper part of the outer wall of the third supporting frame, the fixed plate is connected with a positioning block through a third air cylinder, and a clamping groove is arranged on the front part of the positioning block, can remove impurities on the aluminum liquid, does not adopt knocking and grinding, protects equipment, positions aluminum ingots and is convenient to grab materials.

Description

Aluminum alloy ingot casting automation line

Technical Field

The invention belongs to the technical field of aluminum ingot production, and particularly relates to an automatic production line of aluminum alloy ingots.

Background

Ingots are made by pouring molten metal into permanent or reusable molds. After solidification, the ingots (or bars, slabs or billets, depending on the container) are further machined into a variety of new shapes. The cast ingot is an as-cast structure and has larger columnar crystals and loose centers. Therefore, the cylindrical crystals must be broken into fine grains by large plastic deformation, and loose compaction is carried out, so that excellent metal structure and mechanical properties can be obtained.

Present aluminum alloy ingot casting apparatus for producing, the smelting pot is when carrying liquid aluminium liquid, aluminium liquid surface has miscellaneous goods to float, if do not handle the later stage and get into the setting stage, can image product's quality, it all adopts the manual work to fish for to handle impurity generally, inefficiency, it is artifical many, simultaneously behind aluminium ingot shaping injection molding, the aluminium ingot generally needs the drawing of patterns, current structure of wearing and tearing is the knock type, long-time knocking causes certain damage to whole device, influence the utility life of equipment, aluminium ingot after the drawing of patterns simultaneously can advance the conveyer belt and get into to arrange and snatch the unloading stage, in the current device, the aluminium ingot can appear offset because vibrations in the data send process, be unfavorable for the mechanical unloading in later stage.

Disclosure of Invention

The invention aims to: in order to solve the problems, an automatic production line for aluminum alloy ingots is provided.

The technical scheme adopted by the invention is as follows: an automatic production line for aluminum alloy ingots comprises a smelting furnace, wherein a transmission channel is fixedly connected to one side of the lower portion of the smelting furnace, a first support frame is arranged in the middle of the transmission channel, a first motor is fixedly connected to one side of the upper portion of the first support frame, the first motor is connected with a first rotating rod through a power output shaft, a rotating plate is welded to the outer wall of the first rotating rod, an inclined plate is arranged on one side of the rotating plate, a collecting box is arranged on the lower portion of the inclined plate, a scraping plate is arranged on the other side of the rotating plate, a first air cylinder is fixedly connected to the rear portion of the scraping plate, a first conveying belt is arranged on the lower portion of the front portion of the transmission channel, a tire groove is fixedly connected to the surface of the first conveying belt, a supporting plate is slidably connected to the side end of the tire groove, a top plate is welded to one side of the upper portion of the supporting plate, a spring is fixedly connected to one side of the lower portion of the top plate, and a sliding rod is arranged on the other side of the lower portion of the top plate, the outer wall of the upper part of the sliding rod is connected with a sleeve block in a sliding way, the outer wall of the sleeve block is welded with a connecting rod, one end of the connecting rod is welded with a supporting plate, the top of the supporting plate is welded with a second supporting frame, the bottom of the slide bar is rotationally connected with a rotating block, the inner wall of the rotating block is rotationally connected with a fixed column, one end of the fixed column is welded with a turntable, the center of one side of the turntable is welded with a second rotating rod, one end of the second rotating rod is fixedly connected with a second motor, a second conveyor belt is arranged at the lower part of the front end of the first conveyor belt, a third support frame is arranged around the front part of the second conveyor belt, a fixed plate is welded on the upper part of the outer wall of the third support frame, the upper portion of the fixed plate is fixedly connected with a third air cylinder, the top of the third air cylinder is fixedly connected with a positioning block, and the front portion of the positioning block is provided with a clamping groove.

In a preferred invention mode, one side of the inclined plate is welded on the first support frame, the first air cylinder is fixedly connected on the first support frame, and one side of the collecting box is fixedly connected on the first support frame.

In a preferred invention, the number of the rotating plates is four, an included angle between every two first rotating rods is 90 degrees, the rotating plates are arranged on the first rotating rods, the rotating plates are L-shaped, and the width of the rotating plates is matched with the width of the conveying channel.

In a preferred invention mode, the number of the supporting plate, the spring and the top plate is two, the formed structures are respectively arranged on the left side wall and the right side wall of the tire groove, the supporting plate is L-shaped, and the lower surface of the supporting plate is flush with the inner bottom surface of the tire groove.

In a preferable invention, the number of the slide bar, the sleeve block, the connecting rod, the support plate, the rotating block, the fixing column, the turntable, the second rotating rod and the second motor is two, and the two structures are respectively and symmetrically arranged on the left side and the right side of the tire groove.

In a preferred mode of the invention, the bottom of the spring is fixedly connected to the tire groove, and the front part of the second motor is fixedly connected to the second support frame.

In a preferred invention, the number of the second cylinders is two, and the two second cylinders are respectively arranged on the left side and the right side of the lower portion of the limit plate.

In a preferred mode of the invention, the sipes are sequentially arranged on the surface of the first conveyor belt at equal intervals, and the second conveyor belt is a double-chain conveyor belt.

In a preferred invention, a bottom plate is welded on the inner wall of the third support frame, a second cylinder is fixedly connected to the top of the bottom plate, and a limiting plate is fixedly connected to the top of the second cylinder.

In a preferred invention, the number of the fixing plate, the third cylinder, the positioning block and the clamping groove is two, and the formed structures are symmetrically arranged on the left outer wall and the right outer wall of the third supporting frame respectively.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. according to the invention, the first motor on the first support frame drives the first rotating rod to rotate, so that the rotating plate rotates into the conveying channel, the impurities remained on the surface of the aluminum liquid are intercepted, when a certain amount of impurities are obtained, the first rotating rod is rotated for 90 degrees, the rotating plate reaches a discharging position, the first air cylinder is started, the impurities on the rotating plate are scraped by using the scraper plate, the impurities are conveyed into the collecting box of the conveying channel by the inclined plate, centralized treatment is carried out, four rotating plates are circulated and practical, the impurity removing efficiency is greatly improved, an automatic mechanical deslagging method is adopted, manual removal is not needed, manpower is saved, and meanwhile, the aluminum ingot casting mold in the later period is not influenced by the impurities.

2. According to the invention, the second motor on the second support frame drives the second rotating rod to rotate to drive the fixed column on the rotary table to rotate, so that the sliding rod connected to the fixed column through the rotating block in a rotating mode can move up and down under the guide of the sleeve block to jack up the top plate welded on the supporting plate back and forth, and therefore, an aluminum ingot in the tire groove is loosened, the aluminum ingot is not deshed in a knocking mode, the equipment is prevented from being damaged, and meanwhile, the practical service life of the equipment is prolonged.

3. According to the aluminum ingot clamping device, the second cylinder on the bottom plate connected with the third support frame drives the limiting plate connected with the top to ascend, the limiting plate is used for adjusting the parallelism of aluminum ingots, meanwhile, the third cylinders on the fixing plates on the left side and the right side of the third support frame are started to drive the positioning block on the top to move forwards, so that the aluminum ingots are clamped into the clamping groove, the offset difference of the left side and the right side of the aluminum ingots is adjusted, the later-stage transmission position of the aluminum ingots is ensured, and later-stage mechanical material grabbing is facilitated.

Drawings

FIG. 1 is a schematic diagram of the front view structure of the present invention;

FIG. 2 is a schematic diagram of a side view internal plane structure of a first support frame according to the present invention;

FIG. 3 is a schematic diagram of a top view internal plan of a first support frame according to the present invention;

FIG. 4 is a schematic diagram of a side view of an internal planar structure of a second support frame according to the present invention;

FIG. 5 is an enlarged view taken at A of FIG. 4 in accordance with the present invention;

FIG. 6 is a schematic diagram of a side view of an internal planar structure of a third support frame according to the present invention.

The labels in the figure are: 1-smelting furnace, 2-transmission channel, 3-first support frame, 4-first motor, 5-first rotating rod, 6-rotating plate, 7-sloping plate, 8-collecting box, 9-scraping plate, 10-first cylinder, 11-first conveyer belt, 12-tyre groove, 13-supporting plate, 14-top plate, 15-spring, 16-sliding rod, 17-sleeve block, 18-connecting rod, 19-supporting plate, 20-second support frame, 21-rotating block, 22-fixed column, 23-rotating disc, 24-second rotating rod, 25-second motor, 26-second conveyer belt, 27-third support frame, 28-fixed plate, 29-third cylinder, 30-position block, 31-clamping groove, 32-bottom plate, 33-a second cylinder and 34-a limit plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.

Referring to fig. 1-6, an aluminum alloy ingot casting automatic production line, one side of the lower part of a smelting furnace 1 is fixedly connected with a transmission channel 2, the middle part of the transmission channel 2 is provided with a first support frame 3, one side of the upper part of the first support frame 3 is fixedly connected with a first motor 4, the first motor 4 is connected with a first rotating rod 5 through a power output shaft, the outer wall of the first rotating rod 5 is welded with a rotating plate 6, the rotating plate 6 is L-shaped, impurities on molten aluminum are intercepted, the number of the rotating plates 6 is four, an included angle between every two first rotating rods 5 is 90 degrees and is arranged on the first rotating rod 5, the four rotating plates 6 are recycled, the efficiency is improved, the width of the rotating plate 6 is matched with that of the transmission channel 2, one side of the rotating plate 6 is provided with an inclined plate 7, one side of the inclined plate 7 is welded on the first support frame 3, the lower part of the inclined plate 7 is provided with a collecting box 8 for collecting the impurities, centralized processing, one side of the collection box 8 is fixedly connected on the first support frame 3, the other side of the rotating plate 6 is provided with a scraper plate 9, the rear part of the scraper plate 9 is fixedly connected with a first air cylinder 10, the first air cylinder 10 is fixedly connected on the first support frame 3, the automatic mechanical deslagging method does not need manual removal, labor is saved, and meanwhile, the later-stage aluminum ingot casting mold is not influenced by impurities, the lower part of the front part of the transmission channel 2 is provided with a first conveyor belt 11, the surface of the first conveyor belt 11 is fixedly connected with tire grooves 12, the tire grooves 12 are sequentially arranged on the surface of the first conveyor belt 11 at equal intervals, the side ends of the tire grooves 12 are slidably connected with a supporting plate 13 to play a role of lifting the aluminum ingot, one side of the upper part of the supporting plate 13 is welded with a top plate 14, one side of the lower part of the top plate 14 is fixedly connected with a spring 15, the elasticity of the spring 15 is utilized to return the supporting plate 13, the bottom of the spring 15 is fixedly connected on the tire grooves 12, the supporting plate 13, the springs 15 and the top plate 14 are two in number, the formed structures are respectively arranged on the left side wall and the right side wall of the tire groove 12, the supporting plate 13 is L-shaped, the lower surface of the supporting plate 13 is flush with the inner bottom surface of the tire groove 12, the other side of the lower part of the top plate 14 is provided with a slide rod 16, the outer wall of the upper part of the slide rod 16 is slidably connected with a sleeve block 17, the slide rod 16 is guided to move up and down, a connecting rod 18 is welded on the outer wall of the sleeve block 17, a supporting plate 19 is welded at one end of the connecting rod 18, a second supporting frame 20 is welded at the top of the supporting plate 19, a rotating block 21 is rotatably connected at the bottom of the slide rod 16, a fixing column 22 is rotatably connected at the inner wall of the rotating block 21, a rotating disc 23 is welded at one end of the fixing column 22, a second rotating rod 24 is welded at the center of one side of the rotating disc 23, a second motor 25 is fixedly connected with a second motor 25, the front part of the second rotating disc 25 is fixedly connected on the second supporting frame 20, the sliding rod 16, the sleeve block 17, the connecting rod 18, the supporting plate 19, the rotating block 21, the fixed column 22, the turntable 23, the second rotating rod 24 and the second motor 25 are two in number, and the formed structures are respectively and symmetrically arranged on the left side and the right side of the tire groove 12, the equipment is not abraded in a knocking mode, the practical service life of the equipment is prolonged, the second conveying belt 26 is arranged on the lower portion of the front end of the first conveying belt 11, the second conveying belt 26 is conveyed by two chains, the third supporting frame 27 is arranged on the periphery of the front portion of the second conveying belt 26, the bottom plate 32 is welded on the inner wall of the third supporting frame 27, the second air cylinder 33 is fixedly connected to the top of the bottom plate 32, the limiting plate 34 is fixedly connected to the top of the second air cylinder 33, the parallelism of the plate 34 is utilized to adjust the parallelism of the aluminum ingots, the number of the second air cylinders 33 is two, and the second air cylinders are respectively arranged on the left side and the right side of the lower portion of the limiting plate 34, the upper part of the outer wall of the third supporting frame 27 is welded with a fixing plate 28, the upper part of the fixing plate 28 is fixedly connected with a third cylinder 29, the top of the third cylinder 29 is fixedly connected with a positioning block 30, the front part of the positioning block 30 is provided with a clamping groove 31, the fixing plate 28, the third cylinder 29, the positioning block 30 and the clamping groove 31 are two in number, the formed structures are respectively and symmetrically arranged on the left outer wall and the right outer wall of the third supporting frame 27, and the offset difference of the left side and the right side of an aluminum ingot is adjusted through the left positioning block and the right positioning block.

The working principle is as follows: when the aluminum material melts aluminum through molten aluminum in the use process of the aluminum alloy ingot casting automatic production line, the aluminum liquid sends the aluminum liquid to a tire groove 12 on a first conveying belt 11 through a conveying channel 2, when the aluminum liquid is conveyed in the conveying channel 2, a first motor 4 on a first support frame 3 is started to drive a first rotating rod 5 to rotate, so that a rotating plate 6 rotates to the conveying channel 2, impurities remained on the surface of the aluminum liquid are intercepted, when a certain amount of the impurities is reached, the first rotating rod is rotated by 590 degrees, the rotating plate 6 reaches a discharging position, a first air cylinder 10 is started, impurities on the rotating plate 6 are scraped by a scraping plate 9, the impurities are conveyed to a collecting box 8 through an inclined plate 7, centralized treatment is carried out, four rotating plates 6 are practical in a circulating mode, the impurity removing efficiency is greatly improved, automatic mechanical deslagging is carried out, and meanwhile, and the aluminum ingot casting mold in the later period is not influenced by the impurities; when aluminum liquid is sent into the tire groove 12 for shaping, when the tire groove 12 is sent into the second support frame 20, the second motor 25 on the second support frame 20 is started to drive the second rotating rod 24 to rotate, the fixed column 22 on the rotating disc 23 is driven to rotate, so that the sliding rod 16 connected to the fixed column 22 through the rotating block 21 rotates to move up and down under the guide of the sleeve block 17, the top plate 14 welded on the supporting plate 13 is jacked up back and forth, the aluminum ingot in the tire groove 12 is loosened, the knocking mode is not adopted for desquamation, the equipment is ensured not to be damaged, the practical service life of the equipment is prolonged, when the sliding rod 16 falls, the supporting plate 14 is driven by the elasticity of the spring 15 to fall back down to reach the original position, after the aluminum ingot is desquamated, the aluminum ingot is transmitted to the blanking area through the second conveyor belt 26, when the aluminum ingot is transmitted to the third support frame 27, the second air cylinder 33 on the bottom plate 32 connected through the third support frame 27 drives the limiting plate 34 connected with the top to rise, the limiting plate 34 is used for adjusting the parallelism of the aluminum ingots, and simultaneously the third cylinders 29 on the fixing plates 28 on the left side and the right side of the third supporting frame 27 are started to drive the positioning blocks 30 on the top to move forwards, so that the aluminum ingots are clamped into the clamping grooves 31, the offset difference of the left side and the right side of the aluminum ingots is adjusted, and the aluminum ingot position is positioned.

In this aluminum alloy ingot casting automation line, drive first rotation pole 5 through first motor 4 on first support frame 3 and rotate, make change board 6 rotate to the transmission and say 2 in, the impurity of intercepting aluminium liquid surface retention, when reacing a quantitative, rotate first rotation pole 590 degrees, make change board 6 reach the material level down, start first cylinder 10, utilize scraper blade 9 to strike off the impurity on changing board 6, in gathering the case 8 with impurity transmission way through swash plate 7, centralized processing, four change 6 circulation practicality of board, improve greatly and get rid of impurity efficiency, and automatic mechanical deslagging method, do not need manual the getting rid of, save artifically, guarantee simultaneously that later stage aluminium ingot casting mould can not receive the influence of impurity.

In this aluminum alloy ingot casting automation line, drive second dwang 24 through second motor 25 on the second support frame 20 and rotate, drive the fixed column 22 on the carousel 23 and rotate, thereby make and rotate the slide bar 16 of connection on fixed column 22 through turning block 21 and reciprocate under the direction of nest block 17, jack-up welding is made a round trip roof 14 on layer board 13, thereby make the aluminium ingot in the child groove 12 not hard up, do not adopt the mode of strikeing to come off and grind, guarantee that equipment does not receive the harm, prolong the practical life of equipment simultaneously.

In this aluminum alloy ingot casting automation line, second cylinder 33 on the bottom plate 32 connected through third support frame 27 drives the limiting plate 34 that the top is connected and rises, utilize limiting plate 34 to adjust the depth of parallelism of aluminium ingot, start third cylinder 29 on the fixed plate 28 of the third support frame 27 left and right sides simultaneously, drive the locating piece 30 forward movement at top, make aluminium ingot card go into draw-in groove 31, adjust the skew of aluminium ingot left and right sides poor, guarantee the transmission position in aluminium ingot later stage, make things convenient for later stage machinery to grab the material.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides an aluminum alloy ingot casting automation line, includes smelting pot (1), its characterized in that: the smelting furnace is characterized in that a transmission channel (2) is fixedly connected to one side of the lower portion of the smelting furnace (1), a first support frame (3) is arranged in the middle of the transmission channel (2), a first motor (4) is fixedly connected to one side of the upper portion of the first support frame (3), the first motor (4) is connected with a first rotating rod (5) through a power output shaft, a rotating plate (6) is welded to the outer wall of the first rotating rod (5), an inclined plate (7) is arranged on one side of the rotating plate (6), a collecting box (8) is arranged on the lower portion of the inclined plate (7), a scraping plate (9) is arranged on the other side of the rotating plate (6), a first air cylinder (10) is fixedly connected to the rear portion of the scraping plate (9), a first conveying belt (11) is arranged on the lower portion of the front portion of the transmission channel (2), a tire groove (12) is fixedly connected to the surface of the first conveying belt (11), and a supporting plate (13) is slidably connected to the side end of the tire groove (12), the welding of upper portion one side of layer board (13) has roof (14), lower part one side fixedly connected with spring (15) of roof (14), the lower part opposite side of roof (14) is provided with slide bar (16), the upper portion outer wall sliding connection of slide bar (16) has nest block (17), the outer wall welding of nest block (17) has connecting rod (18), the welding of the one end of connecting rod (18) has backup pad (19), the welding of the top of backup pad (19) has second support frame (20), the bottom rotation of slide bar (16) is connected with turning block (21), the inner wall rotation of turning block (21) is connected with fixed column (22), the welding of the one end of fixed column (22) has carousel (23), the welding of one side center of carousel (23) has second dwang (24), the one end fixedly connected with second motor (25) of second dwang (24), a second conveyor belt (26) is arranged on the lower portion of the front end of the first conveyor belt (11), a third support frame (27) is arranged on the periphery of the front portion of the second conveyor belt (26), a fixing plate (28) is welded on the upper portion of the outer wall of the third support frame (27), a third air cylinder (29) is fixedly connected to the upper portion of the fixing plate (28), a positioning block (30) is fixedly connected to the top of the third air cylinder (29), a clamping groove (31) is formed in the front portion of the positioning block (30), the number of the supporting plate (13), the number of the springs (15) and the number of the top plates (14) are two, the supporting plate (13), the springs and the top plates are respectively arranged on the left side wall and the right side wall of the tire groove (12), the supporting plate (13) is L-shaped, the lower surface of the supporting plate (13) is flush with the inner bottom surface of the tire groove (12), and a bottom plate (32) is welded on the inner wall of the third support frame (27), the top fixedly connected with second cylinder (33) of bottom plate (32), the top fixedly connected with limiting plate (34) of second cylinder (33).

2. The automatic production line of aluminum alloy ingots according to claim 1, comprising: one side of the inclined plate (7) is welded on the first support frame (3), the first air cylinder (10) is fixedly connected on the first support frame (3), and one side of the collecting box (8) is fixedly connected on the first support frame (3).

3. The automatic production line for aluminum alloy ingots according to claim 1, characterized in that: the quantity of changeing board (6) is four, and per two the contained angle of first commentaries on classics pole (5) is 90 degrees settings on first commentaries on classics pole (5), the shape of changeing board (6) is L shape, just the width of changeing board (6) with the width looks adaptation of transmission way (2).

4. The automatic production line of aluminum alloy ingots according to claim 1, comprising: the sliding rod (16), the sleeve block (17), the connecting rod (18), the supporting plate (19), the rotating block (21), the fixing column (22), the rotary table (23), the second rotating rod (24) and the second motor (25) are two in number, and the formed structures are symmetrically arranged on the left side and the right side of the tire groove (12) respectively.

5. The automatic production line for aluminum alloy ingots according to claim 1, characterized in that: the bottom of the spring (15) is fixedly connected to the tire groove (12), and the front part of the second motor (25) is fixedly connected to the second support frame (20).

6. The automatic production line of aluminum alloy ingots according to claim 1, comprising: the tire grooves (12) are sequentially arranged on the surface of the first conveyor belt (11) at equal intervals, and the second conveyor belt (26) is conveyed by a double-chain.

7. The automatic production line of aluminum alloy ingots according to claim 1, comprising: the number of the second cylinders (33) is two, and the two cylinders are respectively arranged on the left side and the right side of the lower portion of the limiting plate (34).

8. The automatic production line of aluminum alloy ingots according to claim 1, comprising: the number of the fixing plate (28), the number of the third cylinder (29), the number of the positioning block (30) and the number of the clamping grooves (31) are two, and the formed structures are symmetrically arranged on the left outer wall and the right outer wall of the third supporting frame (27).