CN110976244A

CN110976244A - Quick drying equipment after painting of single side of wood-plastic product

Info

Publication number: CN110976244A
Application number: CN201911268628.9A
Authority: CN
Inventors: 鄢红英; 严正; 席应旺
Original assignee: Jiangxi Xinsendai Wpc Technology Co ltd
Current assignee: Taizhou Yuanda Jiasi Co ltd
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-04-10
Anticipated expiration: 2039-12-11
Also published as: CN110976244B

Abstract

The invention relates to drying equipment, in particular to quick drying equipment for a wood-plastic product after single-side painting. The technical problem is how to design a wood-plastic product drying device which can dry the wood-plastic product, takes less time and avoids impurities from falling onto the paint to affect the quality of the wood-plastic product after the single-side painting. The utility model provides a wood-plastic products single face postlacquer quick drying equipment, is including the stoving case, both sides lower part is uncovered setting around the stoving case, the support frame is installed in stoving case outer wherein one side, L shape support column is installed in support frame bottom one side of keeping away from the stoving case, the quantity of heater is two at least. According to the invention, the wood-plastic product is placed on the left and right supporting plates, the motor is started to rotate forward, so that the T-shaped push rod can push the wood-plastic product to move backwards into the drying box, and the heater is started, so that paint on the wood-plastic product can be dried, and the drying method is faster than natural drying and saves time.

Description

Quick drying equipment after painting of single side of wood-plastic product

Technical Field

The invention relates to drying equipment, in particular to quick drying equipment for a wood-plastic product after single-side painting.

Background

Wood-plastic, i.e. wood-plastic composite material, is a new type of composite material which is briskly developed in recent years at home and abroad, and means a plate or a section which is produced by mixing polyethylene, polypropylene, polyvinyl chloride and the like instead of common resin adhesives with more than 35-70% of waste plant fibers such as wood flour, rice husks, straws and the like to form a new wood material, and then carrying out plastic processing technologies such as extrusion, mould pressing, injection molding and the like. The method is mainly used in industries such as building materials, furniture, logistics packaging and the like. The wood-plastic composite board is prepared by mixing plastic and wood powder according to a certain proportion and then performing hot extrusion molding, and is called an extruded wood-plastic composite board.

At present, people all place the wood-plastic products after spraying paint in assigned position through natural drying, because the nature of paint, need spend a large amount of time just can dry to at natural drying's in-process, the impurity of air drops easily to paint on, has just also influenced the quality of wood-plastic products, and is in case of doing over again, with regard to more troublesome, still influences the preparation progress of wood-plastic products.

Therefore, a wood plastic product can be dried, the time spent is short, and the phenomenon that impurities fall onto paint to affect the quality of the wood plastic product after single-side painting is avoided.

Disclosure of Invention

In order to overcome the defect that because the nature of paint requires a large amount of time for drying, in the process of natural drying, impurities in the air easily drop to the paint, so that the quality of the wood-plastic product is influenced, the technical problem to be solved is as follows: the utility model provides a can dry wood-plastic product, spend time few, avoided impurity to drop to the paint on influence the wood-plastic product single face of quality fast drying equipment after painting.

The technical scheme of the invention is as follows: a wood-plastic product single-side lacquering back quick drying equipment comprises: the drying box is provided with an opening at the lower parts of the front side and the rear side, the supporting frame is arranged at one side outside the drying box, the L-shaped supporting columns are arranged at one side of the bottom of the supporting frame far away from the drying box, at least two heaters are arranged at two sides in the drying box, supporting rods are distributed at intervals at one side of the drying box far away from the heaters and close to the supporting frame, the rotating rods for guiding the wood-plastic products are distributed at one side of the drying box close to the supporting rods at intervals in a rotating mode, and the guide roller is arranged at one side in the drying box between the rotating rods at two sides; the conveying mechanism is arranged between two sides of the supporting frame close to the drying box and used for placing and conveying the wood-plastic products; the pushing mechanism is arranged between one side of the support frame far away from the drying box and the L-shaped supporting columns and used for pushing the wood-plastic products into the drying box.

Further, conveying mechanism is including supporting shoe, first pivot, drive wheel, belt, backup pad and first baffle, the quantity of supporting shoe is four at least, and per two supporting shoes are located the both sides of support frame, the rotary type is connected with two first pivots between per two supporting shoe medial surfaces, the drive wheel is installed in the both sides of first pivot, the belt is around sending between the both sides drive wheel, interval distribution has the backup pad that can make the wood-plastic product place and stop gear complex between the belt of both sides, first baffle is installed in the backup pad tip towards the stoving case.

Further, pushing mechanism including T shape push rod, rack, servo motor, second pivot, rotary gear and one-way gear, send rack slidingtype place in keep away from between stop gear's support frame one side and L shape support column one side, T shape push rod is installed in the rack one side of keeping away from stop gear, the installation of second pivot rotary type in keep away from stoving case and be close to stop gear's support frame one side, its one side install with rack toothing's rotary gear, rotary gear runs through support frame and rack toothing, servo motor installs in the support frame one side of being close to the second pivot, its output shaft with second pivot tip fixed connection, be two at least with stop gear complex one-way gear's quantity, it install in the both ends of T shape push rod.

Furthermore, the limiting mechanism comprises a first sliding sleeve, a first telescopic rod, a first spring, a limiting plate with grooves, a second sliding sleeve, an L-shaped sliding rod, a limiting block and a second spring, wherein the number of the first sliding sleeve is at least four, every two first sliding sleeves are arranged on two sides of the supporting frame close to the supporting block, the first telescopic rod is slidably connected to one side of the first sliding sleeve close to the drying box in a penetrating way, the end part of the first telescopic rod, far away from the drying box, of the first sliding sleeve is wound with the first spring between the first sliding sleeve close to the drying box, the limiting plate with grooves, capable of limiting the supporting plate in a limiting way, is slidably connected to one side of the first sliding sleeve far away from the drying box, the end part of the first telescopic rod, facing the drying box, of the first sliding sleeve is fixedly connected with the end part of the first telescopic rod, the number of the second sliding sleeve is at least two, its one end run through the support frame with the one-way gear cooperation, its other end with the cooperation of trough of belt limiting plate, the stopper install in one side of L shape slide bar, second spring coupling in keep away from the support frame L shape slide bar one side with between the second sliding sleeve inner wall.

Furthermore, the drying box also comprises at least two hot air blowers which are symmetrically arranged at two sides in the drying box.

The drying box further comprises a third sliding sleeve, a second baffle, a second telescopic rod, a third spring, a guide ring, a reel and two steel wires, wherein the third sliding sleeve is fixedly connected to the opening of the drying box, the second baffle for improving the sealing performance of the drying box is slidably placed in the third sliding sleeve, the second telescopic rod is fixedly connected to one side, away from the supporting rod, of the second sliding sleeve, the number of the guide rings is at least eight, the guide rings are installed on three sides outside the drying box, the third spring is sleeved on the second telescopic rod, one end of the third spring is fixedly connected with one side of the second telescopic rod, close to the second baffle, the other end of the third spring is fixedly connected with one side of the guide ring, close to the rotating rod, the reel is installed at the second rotating end portion, away from the servo motor, the two steel wires are wound on the reel, and one end of the two steel wires penetrates through the guide ring on one side, the other end of the second telescopic rod penetrates through the guide ring on the other side and is fixedly connected with the end part of the second telescopic rod on the other side.

The invention has the beneficial effects that: according to the invention, the wood-plastic product is placed on the left and right supporting plates, the motor is started to rotate forward, so that the T-shaped push rod can push the wood-plastic product to move backwards into the drying box, the heater is started, the paint on the wood-plastic product can be dried, the drying is faster than natural drying, the time is saved, the phenomenon that the quality of the wood-plastic product is influenced by falling of impurities can be avoided, the sealing performance of the drying box can be improved through the action of the second baffle, and the drying effect is improved.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

FIG. 2 is a schematic view of a first partial body structure according to the present invention.

Fig. 3 is an enlarged schematic view of the structure of the present invention a.

FIG. 4 is a schematic view of a second partial body structure according to the present invention.

FIG. 5 is an enlarged schematic view of the present invention B.

Fig. 6 is a partially cut-away perspective view of the present invention.

FIG. 7 is an enlarged schematic view of the present invention C.

Labeled as: the automatic steel wire drawing machine comprises a supporting block 1, a first rotating shaft 2, a driving wheel 3, a belt 4, a supporting plate 5, a first baffle 6, a supporting column 7L-shaped, a supporting frame 8, a push rod 9T-shaped, a rack 10, a servo motor 11, a second rotating shaft 12, a rotating gear 13, a one-way gear 14, a first sliding sleeve 15, a first telescopic rod 16, a first spring 17, a limiting plate 18 with grooves, a second sliding sleeve 19, a sliding rod 20L-shaped, a limiting block 21, a second spring 22, a drying box 23, a heater 24, a supporting rod 25, a rotating rod 26, a guide roller 27, a hot air blower 28, a third sliding sleeve 29, a second baffle 30, a second telescopic rod 31, a third spring 32, a guide ring 33, a reel 34 and a steel.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

Example 1

Referring to fig. 1-7, a wood plastic product single-side painting and then fast drying device comprises a conveying mechanism, an L-shaped supporting column 7, a supporting frame 8, a pushing mechanism, a limiting mechanism, a drying box 23, a heater 24, a supporting rod 25, a rotating rod 26 and a guide roller 27, wherein the lower part of the front side outside the drying box 23 is fixedly connected with the supporting frame 8, the front side of the bottom of the supporting frame 8 is fixedly connected with the L-shaped supporting column 7, the pushing mechanism is arranged between the L-shaped supporting column 7 and the supporting frame 8, the conveying mechanism is arranged between the left side and the right side of the supporting frame 8, the left side and the right side of the front side of the bottom of the supporting frame 8 are respectively provided with the limiting mechanism, the limiting mechanisms are in contact fit with the conveying mechanism, the heaters 24 are respectively arranged on the upper parts of the front side and the rear side in the drying box 23, the supporting rods 25 capable, the rotating rods 26 are positioned at the left side and the right side of the supporting rod 25, the rear side of the bottom in the drying box 23 is rotatably provided with a guide roller 27 capable of guiding wood-plastic products, and the guide roller 27 is matched with the supporting rod 25.

Conveying mechanism is including supporting shoe 1, first pivot 2, drive wheel 3, belt 4, backup pad 5 and first baffle 6, the supporting shoe 1 that is equipped with of support frame 8 left and right sides all symmetry formula, the rotary type is connected with first pivot 2 between the front and back both sides supporting shoe 1 upper portion and between the lower part, both parts all rigid coupling has drive wheel 3 around first pivot 2, around having belt 4 between the upper and lower both sides drive wheel 3, evenly spaced rigid coupling has backup pad 5 that can make the wood-plastic product place between the front and back both sides belt 4 lateral surface, backup pad 5 rear end rigid coupling has first baffle 6, backup pad 5 front end and stop gear contact cooperation.

Pushing mechanism is including T shape push rod 9, rack 10, servo motor 11, second pivot 12, rotating gear 13 and one-way gear 14, the slidingtype is equipped with rack 10 between the middle and the support frame 8 top in the middle of the 7 outer tops of L shape support column, rack 10 top rigid coupling has T shape push rod 9, T shape push rod 9 and the contact of support frame 8, one-way gear 14 is all installed at both ends about T shape push rod 9, one-way gear 14 and stop gear cooperation, be connected with second pivot 12 of the middle rotary type of support frame 8 bottom front side, rotating gear 13 is installed to second pivot 12 left part, rotating gear 13 runs through support frame 8 and the meshing of rack 10, servo motor 11 installs in the 8 bottom front side left part of support frame, servo motor 11's output shaft passes through shaft coupling and the 12 left end fixed connection of second pivot.

The limiting mechanism comprises a first sliding sleeve 15, a first telescopic rod 16, a first spring 17, a limiting block 18 with a groove, a second sliding sleeve 19, an L-shaped sliding rod 20, a limiting block 21 and a second spring 22, wherein the first sliding sleeve 15 is symmetrically and fixedly connected to the left and right parts of the front side of the bottom of the supporting frame 8, the limiting block 18 with a groove is slidably arranged at the lower part of the first sliding sleeve 15 at the rear side, the rear end of the limiting block 18 with a groove is in contact fit with the supporting plate 5, the first telescopic rod 16 is slidably arranged at the lower part of the first sliding sleeve 15 at the front side, the rear end of the first telescopic rod 16 is fixedly connected to the front end of the limiting block 18 with a groove, the first spring 17 is wound between the rear part of the first telescopic rod 16 and the rear side of the first sliding sleeve 15 at the front side, the second sliding sleeve 19 is fixedly connected to the left and right parts of the front side of the bottom of the supporting, the outer end of the L-shaped sliding rod 20 is matched with the limiting plate 18 with the groove, a second spring 22 is connected between the bottom of the L-shaped sliding rod 20 and the bottom in the second sliding sleeve 19, a limiting block 21 is fixedly connected to the lower portion of the left side face in the right L-shaped sliding rod 20, a limiting block 21 is fixedly connected to the lower portion of the right side face in the left L-shaped sliding rod 20, and the limiting block 21 is matched with the supporting frame 8.

At first, the wood-plastic products that the operating personnel finishes spraying paint in proper amount are placed on conveying mechanism, the wood-plastic products of the below contacts with 8 tops of support frame, can start pushing mechanism, pushing mechanism function promotes the wood-plastic products rearward displacement on the support frame 8, wood-plastic products rearward displacement contacts with bracing piece 25 in drying box 23, when wood-plastic products completely removed to drying box 23, start pushing mechanism and move forward and reset, pushing mechanism resets and drives stop gear and unclamp conveying mechanism, conveying mechanism function drives wood-plastic products downstream, the wood-plastic products of the below move downstream to support frame 8, stop gear then blocks conveying mechanism once more, start heater 24, heater 24 sends the heat and dries the lacquer on the wood-plastic products. After the lacquer on the wood-plastic product in the drying box 23 is dried, the pushing mechanism is started again, the pushing mechanism pushes the wood-plastic product on the support frame 8 to move backwards again, the wood-plastic product moves backwards after pushing the dried lacquer, the wood-plastic product of the dried lacquer moves backwards to be in contact with the guide roller 27, and then slides out of the drying box 23, the pushing mechanism can be started to reset, and the drying is repeated so as to dry the lacquer on the wood-plastic product continuously. And after all the paint on the wood-plastic product is dried, the heater 24 is turned off.

At first, operating personnel places the wood-plastic products after spraying paint in right amount between left and right sides backup pad 5, and make wood-plastic products and first baffle 6 contact, the wood-plastic products of below contact with support frame 8, stop gear blocks backup pad 5 spacing, and then after pushing mechanism promoted wood-plastic products to the stoving case 23 internal restoration, pushing mechanism drives stop gear function, stop gear function loosens backup pad 5, because of the effect of gravity, wood-plastic products downstream drives backup pad 5 downstream through drive wheel 3 and belt 4, when wood-plastic products of below moved to support frame 8, stop gear resets and fixes backup pad 5, so relapse, can be continuous make wood-plastic products move to support frame 8 on be pushed stoving case 23 internal drying.

After the wood-plastic product is placed, the servo motor 11 can be started to rotate forwards, the servo motor 11 drives the second rotating shaft 12 to rotate forwards, the second rotating shaft 12 drives the rotating gear 13 to rotate forwards, the rotating gear 13 rotates forwards to drive the rack 10 to move backwards, the rack 10 moves backwards to drive the T-shaped push rod 9 to move backwards, the T-shaped push rod 9 moves backwards to drive the one-way gear 14 to move backwards, the one-way gear 14 moves backwards to slide over the limiting mechanism, the T-shaped push rod 9 moves backwards to be in contact with the wood-plastic product, the T-shaped push rod 9 also drives the wood-plastic product to move backwards, when the wood-plastic product completely moves into the drying box 23, the servo motor 11 can be started to rotate backwards, the T-shaped push rod 9 moves forwards to drive the one-way gear 14 to move forwards to reset, the one-way gear 14 moves forwards to be in contact with the limiting mechanism when resetting, and, the lowest wood-plastic product moves to the support frame 8, and the servo motor 11 is closed. Repeating the steps, and then pushing the wood-plastic product into the drying box 23 to dry the paint.

When the servo motor 11 starts to rotate forwards, the one-way gear 14 moves backwards and slides over the L-shaped sliding rod 20, when the servo motor 11 starts to rotate backwards, the one-way gear 14 moves forwards to be in contact with the L-shaped sliding rod 20, the L-shaped sliding rod 20 moves downwards due to the one-way gear 14, the second spring 22 is compressed, the L-shaped sliding rod 20 moves downwards to push the grooved limiting plate 18 to move forwards, the grooved limiting plate 18 moves forwards to drive the first telescopic rod 16 to move forwards, the first spring 17 is compressed, the grooved limiting plate 18 moves forwards to be separated from the supporting plate 5, the wood plastic product drives the supporting plate 5 to move downwards due to the action of gravity, when the lowest wood plastic product moves to the supporting frame 8, the one-way gear 14 is separated from the L-shaped sliding rod 20, the L-shaped sliding rod 20 moves upwards to reset due to the action of the second spring 22, and the first telescopic rod 16 moves backwards to drive the grooved limiting plate 18 to move backwards to block the supporting plate. Therefore, when one wood-plastic product is moved into the drying box 23 for drying, the next wood-plastic product can be moved onto the supporting frame 8.

Example 2

Referring to fig. 1, 6 and 7, the present embodiment is different from embodiment 1 mainly in that the present embodiment further includes a hot air blower 28, and the hot air blower 28 is installed on the upper portions of the left and right sides in the drying box 23.

Also comprises a third sliding sleeve 29, a second baffle 30 and a second telescopic rod 31, the drying box 23 is provided with a third sliding sleeve 29 in the middle of the lower portions of the front side surface and the rear side surface, the third sliding sleeve 29 is internally provided with a second baffle 30 in a sliding manner, the upper sides of the middle portions of the outer side surfaces of the second baffles 30 on the front side and the rear side are fixedly connected with a second telescopic rod 31, the middle portions and the upper right side of the front side surface and the rear side surface outside the drying box 23 are provided with a guide ring 33, the right end of the second rotating shaft 12 is fixedly connected with a reel 34, the reel 34 is wound with two steel wires 35, one end of each two steel wire 35 penetrates through the front side guide ring 33 to be fixedly connected with the top end of the front side second telescopic rod 31, the other end of each two steel wire 35 penetrates through the right side guide ring 33 and the rear side to be fixedly connected with the top end of the rear side second telescopic rod 31, and the third spring 32 is wound between the lower portion of the second.

When the wood-plastic product is moved into the drying box 23 for drying, the hot air blower 28 can be started, and the hot air blower 28 releases heat to dry paint on the wood-plastic product. And after all the paint on the wood-plastic product is dried, closing the hot air blower 28. Thus, the drying speed can be accelerated.

When the servo motor 11 starts to rotate positively, the second rotating shaft 12 also drives the reel 34 to rotate positively, the reel 34 rotates positively to roll up the two-section steel wire 35, the two-section steel wire 35 is rolled up to drive the second telescopic rod 31 to move upwards, the third spring 32 is compressed, the second telescopic rod 31 moves upwards to drive the second baffle 30 to move upwards, the second baffle 30 moves upwards to prevent the drying box 23 from being blocked, the wood-plastic product is pushed into the drying box 23, the servo motor 11 is started to rotate reversely, the second rotating shaft 12 rotates reversely to drive the reel 34 to rotate reversely, the two-section steel wire 35 is loosened, due to the action of the third spring 32, the second telescopic rod 31 moves downwards to drive the second baffle 30 to move downwards to seal the drying box 23, and the drying of the paint on the wood-plastic product can be. So, can make the closure of stoving case 23 better, improve the effect of drying.

The above-mentioned embodiments are merely preferred embodiments of the present invention, which are not intended to limit the scope of the present invention, and therefore, all equivalent changes made by the contents of the claims of the present invention should be included in the claims of the present invention.

Claims

1. The utility model provides a wood-plastic products single face postpainting quick drying equipment which characterized by, including:

the drying box (23), the lower parts of the front side and the rear side of the drying box (23) are arranged in an open manner, the support frame (8) is arranged on one side outside the drying box (23), the L-shaped support columns (7) are arranged on one side of the bottom of the support frame (8) far away from the drying box (23), at least two heaters (24) are arranged on the two sides of the drying box (23), support rods (25) are distributed on one side of the drying box (23) far away from the heaters (24) and close to the support frame (8) at intervals, the rotary rods (26) for guiding wood-plastic products are distributed on one side of the drying box (23) close to the support rods (25) at intervals, and the guide rollers (27) are arranged on one side of the drying box (23) between the rotary rods (26) on the two sides;

the conveying mechanism is arranged between two sides of the supporting frame (8) close to the drying box (23) and is used for placing and conveying the wood-plastic products;

the pushing mechanism is installed between one side of the supporting frame (8) far away from the drying box (23) and the L-shaped supporting columns (7) and used for pushing the wood-plastic products into the drying box (23).

2. The wood plastic product single-side painting and then fast drying equipment according to claim 1, wherein the conveying mechanism comprises a supporting block (1), a first rotating shaft (2), a driving wheel (3), a belt (4), a supporting plate (5) and a first baffle plate (6), the number of the supporting blocks (1) is at least four, every two supporting blocks (1) are positioned at two sides of the supporting frame (8), two first rotating shafts (2) are rotatably connected between the inner side surfaces of every two supporting blocks (1), the driving wheels (3) are arranged at two sides of the first rotating shaft (2), the belt (4) is wound between the driving wheels (3) at the two sides, supporting plates (5) which can enable wood-plastic products to be placed and are matched with the limiting mechanism are distributed between the belts (4) at the two sides at intervals, the first baffle (6) is arranged at the end part of the supporting plate (5) facing the drying box (23).

3. The wood plastic product single-side painting and then fast drying equipment according to claim 2, characterized in that the pushing mechanism comprises a T-shaped push rod (9), a rack (10), a servo motor (11), a second rotating shaft (12), a rotating gear (13) and a one-way gear (14), the sent rack (10) is slidably placed between one side of the support frame (8) far away from the limiting mechanism and one side of the L-shaped supporting column (7), the T-shaped push rod (9) is installed at one side of the rack (10) far away from the limiting mechanism, the second rotating shaft (12) is rotatably installed at one side of the support frame (8) far away from the drying box (23) and close to the limiting mechanism, the rotating gear (13) meshed with the rack (10) is installed at one side of the support frame (8), the rotating gear (13) penetrates through the support frame (8) and is meshed with the rack (10), the servo motor (11) is installed at one side of the support frame (8) close to, the output shaft of the T-shaped push rod is fixedly connected with the end part of the second rotating shaft (12), and at least two one-way gears (14) matched with the limiting mechanism are arranged at two ends of the T-shaped push rod (9).

4. The wood plastic product single-sided painting and post-drying rapid drying equipment as claimed in claim 3, characterized in that the limiting mechanism comprises a first sliding sleeve (15), a first telescopic rod (16), a first spring (17), a slotted limiting plate (18), a second sliding sleeve (19), an L-shaped sliding rod (20), a limiting block (21) and a second spring (22), the number of the first sliding sleeves (15) is at least four, every two first sliding sleeves (15) are installed at two sides of the supporting frame (8) close to the supporting block (1), the first telescopic rod (16) is slidably connected to one side of the first sliding sleeve (15) close to the drying box (23), the end part far away from the drying box (23) and the first sliding sleeve (15) close to the drying box (23) are wound with the first spring (17), the slotted limiting plate (18) capable of limiting the supporting plate (5) is slidably connected to one side of the first sliding sleeve (15) far away from the drying box (23), its tip towards stoving case (23) with first telescopic link (16) tip fixed connection, the quantity of second sliding sleeve (19) is two at least, and it is installed in support frame (8) one side that is close to first sliding sleeve (15), place in of L shape slide bar (20) slidingtype in second sliding sleeve (19), its one end runs through support frame (8) with one-way gear (14) cooperation, its other end with trough of belt limiting plate (18) cooperation, stopper (21) install in one side of L shape slide bar (20), second spring (22) connect in keep away from L shape slide bar (20) one side of support frame (8) with between second sliding sleeve (19) inner wall.

5. The wood plastic product single-side painting and rapid drying equipment according to claim 4, characterized by further comprising at least two hot air blowers (28), wherein the hot air blowers (28) are symmetrically arranged on two sides in the drying box (23).

6. The wood plastic product single-side painting and then fast drying equipment according to claim 5, characterized by further comprising a third sliding sleeve (29), a second baffle (30), a second telescopic rod (31), a third spring (32) (33), a guide ring (33), a reel (34) and a bisecting steel wire (35), wherein the opening of the drying box (23) is fixedly connected with the third sliding sleeve (29), the second baffle (30) for improving the sealing performance of the drying box (23) is slidably placed in the third sliding sleeve (29), one side of the second baffle, which is far away from the supporting rod (25), is fixedly connected with the second telescopic rod (31), the number of the guide ring (33) is at least eight, the guide ring is installed on three sides outside the drying box (23), the third spring (32) is sleeved on the second telescopic rod (31), and one end of the third spring is fixedly connected with one side of the second telescopic rod (31), which is close to the second baffle (30), the other end with be close to guide ring (33) one side fixed connection of bull stick (26), reel (34) are installed in the second pivot (12) tip of keeping away from servo motor (11), two divide copper wires (35) to wind on reel (34), and its one end is passed one side guide ring (33) with one side second telescopic link (31) tip fixed connection, the other end passes opposite side guide ring (33) with opposite side second telescopic link (31) tip fixed connection.