Prepreg gluing roll shaft spraying complete machine

Abstract

The invention discloses a prepreg gluing roll shaft spraying complete machine, and belongs to the technical field of gluing roll shaft processing equipment.The prepreg gluing roll shaft spraying complete machine comprises a bottom frame, a polishing mechanism is arranged at the upper end of the bottom frame, two mounting frames fixedly mounted at the upper end of the bottom frame are arranged in the polishing mechanism, and a hydraulic telescopic rod is fixedly mounted on one side of each mounting frame; iron sand can be conveyed through the conveying mechanism, the rotating mechanism can drive the gluing roller shaft to rotate, the iron sand is adsorbed to the outside of the gluing roller shaft under the cooperation of the magnetic rod, then the spraying mechanism can spray non-cohesive gel on the gluing roller shaft, and the UV lamp can quickly dry the sprayed non-cohesive gel. And then, a polishing roller driven by a third motor can play a role in uniformly polishing each layer of cured non-cohesive gel and iron sand, and a hydraulic telescopic rod and a spring are matched to add and polish in a layered manner, so that the roller shaft machining automation is enhanced, the layered uniformity is enhanced, and the finished product manufacturing success rate is enhanced.

Description

Technical Field

[0001] The present invention relates to the field of equipment for processing sizing roller shafts, and particularly to a whole machine for spraying sizing roller shafts of prepregs. Background Art

[0002] Prepregs are very important semi-finished products for circuit boards or copper clad laminates. The sizing machine for prepregs is a very important machine unit in the manufacturing process of prepregs. As the sizing liquid formula for producing prepregs becomes more and more complex, multiple resins are mixed, especially the addition of inorganic fillers has become one of the commonly used technologies in the copper clad laminate industry. The complexity of the formula and the application of fillers cause varying degrees of damage to the equipment for prepregs. Among them, the most obvious is the roller shaft in the roller shaft chamber of the sizing machine for prepregs, and its roller shaft is the most vulnerable to damage.

[0003] Currently, the roller shaft requires multiple processes during spraying. Workers need to spray non-stick glue on the surface of the roller shaft, and then sprinkle iron sand after spraying a layer of non-stick glue. The above steps need to be processed repeatedly. Its operation is not automated enough, and after each layer of iron sand and non-stick glue is cured, the thickness of each layer is uneven, which in turn affects the success rate of finished product production. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a whole machine for spraying sizing roller shafts of prepregs, which overcomes the deficiencies of the prior art that the roller shaft requires multiple processes during spraying. Workers need to spray non-stick glue on the surface of the roller shaft, and then sprinkle iron sand after spraying a layer of non-stick glue. The above steps need to be processed repeatedly. Its operation is not automated enough, and after each layer of iron sand and non-stick glue is cured, the thickness of each layer is uneven, which in turn affects the success rate of finished product production.

[0005] To achieve the above object, the present invention provides the following technical solution: A whole machine for spraying sizing roller shafts of prepregs, including a chassis. A polishing mechanism is provided at the upper end of the chassis. In the polishing mechanism, there are two sets of mounting frames fixedly installed at the upper end of the chassis. On one side of each set of mounting frames, a hydraulic telescopic rod is fixedly installed respectively. The telescopic end of each hydraulic telescopic rod is fixedly installed with a movable block respectively. A spring is sleeved on the outer wall of each hydraulic telescopic rod. One side of the spring is fixedly installed with the mounting frame, and the other end of the spring is fixedly installed with the movable block. The inner walls of the two movable blocks rotatably install the same polishing roller. A third motor is installed on the outer wall of one of the movable blocks, and the output shaft of the third motor is fixedly installed with the polishing roller. A conveying mechanism for conveying iron sand is arranged inside the chassis. A rotating mechanism for rotating the sizing roller shaft is provided at the upper end of the chassis. A magnetic rod for magnetically attracting iron sand is arranged in the rotating mechanism. A spraying mechanism for spraying the sizing roller shaft is provided at the upper end of the rotating structure. Two UV ultraviolet lamps are installed on the inner walls of the rotating mechanisms on both sides of the spraying mechanism.

[0006] By adopting the above technical solution, during use, the conveying mechanism can convey the iron sand, and the rotating mechanism can drive the glue applicator roller shaft to rotate. With the cooperation of the magnetic rod, the iron sand is adsorbed onto the outer surface of the glue applicator roller shaft. Then, the spraying mechanism can spray non-stick glue onto the glue applicator roller shaft, and the UV ultraviolet lamp can quickly dry the sprayed non-stick glue. Then, the polishing roller driven by the third motor can polish the cured non-stick glue and iron sand in each layer evenly. The hydraulic telescopic rod and the spring cooperate to adapt to layer-by-layer addition and thickening polishing, thereby enhancing the automation of the roller shaft processing, enhancing the layer uniformity, and strengthening the success rate of finished product production.

[0007] As a preferred technical solution of the present invention, the rotating mechanism includes a fixed frame fixedly installed at the upper end of the chassis. A rotating groove is provided on the inner wall of one side of the fixed frame. The inner wall of the fixed frame located inside the rotating groove is rotatably connected to a rotating disk. A second motor is installed on the outer wall of the fixed frame, and the output shaft of the second motor is fixedly installed with the rotating disk.

[0008] By adopting the above technical solution, the chassis can fix the fixed frame, the rotating groove inside the fixed frame can accommodate the rotating disk, and the second motor on the outer wall of the chassis can drive the rotating disk to rotate.

[0009] As a preferred technical solution of the present invention, a circular hole is provided on the inner wall of the fixed frame on the side away from the rotating groove. A bearing is embedded in the inner wall of the fixed frame located inside the circular hole. The inner ring wall of the bearing is embedded with a feeding tray. A limiting ring is fixedly installed on the inner wall of the feeding tray. The magnetic rod is fixedly installed on the inner wall of the feeding tray between the limiting rings.

[0010] By adopting the above technical solution, the circular hole can accommodate the bearing, the feeding tray can be slidably inserted into the bearing. The feeding tray can fix the limiting ring and the magnetic rod, and the limiting ring can be sleeved on the inner wall of the roller shaft, thereby facilitating the feeding of the roller shaft, and the bearing facilitates the rotation of the roller shaft in cooperation.

[0011] As a preferred technical solution of the present invention, a clamping groove is provided on the inner wall of the rotating disk. A cross block is fixedly installed on the side of the magnetic rod away from the feeding tray. The cross block located inside the clamping groove is slidably clamped with the inner wall of the rotating disk.

[0012] By adopting the above technical solution, the cross block is clamped into the clamping groove inside the rotating disk, and then it is convenient to drive the magnetic rod to rotate when the rotating disk rotates, thereby driving the feeding tray to rotate.

[0013] As a preferred technical solution of the present invention, a plurality of electric push rods are fixedly installed on the inner wall of the rotating disc located around the card slot, and a resisting block is fixedly installed at the telescopic end of each group of electric push rods.

[0014] By adopting the above technical solution, the rotating disc can fix the electric push rods, and the electric push rods can drive the resisting blocks to stretch, so as to position the roller shaft.

[0015] As a preferred technical solution of the present invention, mounting holes are formed in the inner top wall of the fixing frame, and the UV ultraviolet lamps located on both sides of the mounting holes are installed on the inner top wall of the fixing frame.

[0016] By adopting the above technical solution, the fixing frame can fix the UV ultraviolet lamps, and the UV ultraviolet lamps can quickly dry the coating.

[0017] As a preferred technical solution of the present invention, the spraying mechanism includes a liquid storage shell fixedly installed at the upper end of the fixing frame, and the liquid storage shell is located inside the mounting hole. A plurality of spray heads are fixedly installed at the lower end of the liquid storage shell, and an external connecting pipe is fixedly installed at the upper end of the liquid storage shell.

[0018] By adopting the above technical solution, the fixing frame can fix the liquid storage shell, and the external connecting pipe can connect the liquid supply mechanism and the liquid storage shell, so as to facilitate the spray heads to spray the roller shaft.

[0019] As a preferred technical solution of the present invention, the conveying mechanism includes two conveying rollers rotatably installed on the inner wall of the bottom frame. The same iron sand conveyor belt is tensioned and sleeved on the outer walls of the two conveying rollers. A first motor is installed on the outer wall of the bottom frame, and the output shaft of the first motor is fixedly installed with one of the conveying rollers.

[0020] By adopting the above technical solution, the bottom frame can rotatably support the conveying rollers, the first motor can drive the conveying rollers to rotate, and the conveying rollers and the iron sand conveyor belt cooperate to convey the iron sand.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention can convey iron sand through the conveying mechanism, and the rotating mechanism can drive the glue application roller shaft to rotate. Under the cooperation of the magnetic rod, the iron sand is adsorbed outside the glue application roller shaft. Then the spraying mechanism can spray non-stick glue on the glue application roller shaft, and the UV ultraviolet lamp can quickly dry the sprayed non-stick glue. Then the polishing roller driven by the third motor can polish each layer of solidified non-stick glue and iron sand evenly. The hydraulic telescopic rod and the spring cooperate to adapt to layer-by-layer addition and thickening for polishing, thereby enhancing the automation of roller shaft processing, enhancing the layer uniformity, and strengthening the success rate of finished product production.

[0022] In the present invention, the electric push rod drives the expansion and contraction of the abutting block, and in cooperation with the limiting ring, it can play a positioning role on the inner walls at both ends of the roller shaft. Moreover, the cross-shaped block slides and is clamped into the card slot, which can play a positioning role on the roller shaft and enhance the stability of the roller shaft during rotation.

[0023] In the present invention, the spray head is arranged with an arc-shaped side surface for the roller shaft. The arc surface of the roller shaft can intercept the sprayed coating, and the sprayed coating is in multiple layers, with each spraying layer being relatively thin, thereby further facilitating the rapid drying effect of the UV ultraviolet lamp on it. Description of the Drawings

[0024] Figure 1 is the axonometric schematic diagram of the present invention; Figure 2 is in the present invention Figure 1 enlarged view of part A; Figure 3 is the right-side sectional schematic diagram of the present invention; Figure 4 is in the present invention Figure 3 enlarged view of part B; Figure 5 is in the present invention Figure 3 enlarged view of part C; Figure 6 is the top-view schematic diagram of the fixing frame of the present invention; Figure 7 is the front-view schematic diagram of the magnetic rod of the present invention.

[0025] Description of the Reference Numerals: 1, chassis; 2, conveying mechanism; 201, conveying roller; 202, iron sand conveyor belt; 203, first motor; 3, rotating mechanism; 301, fixing frame; 302, second motor; 303, rotating groove; 304, rotating disk; 305, card slot; 306, cross-shaped block; 307, electric push rod; 308, abutting block; 309, magnetic rod; 310, circular hole; 311, bearing; 312, feeding tray; 313, limiting ring; 314, mounting hole; 4, spraying mechanism; 401, liquid storage shell; 402, spray head; 403, outer connecting pipe; 5, UV ultraviolet lamp; 6, polishing mechanism; 601, mounting frame; 602, hydraulic telescopic rod; 603, spring; 604, movable block; 605, third motor; 606, polishing roller. Detailed Embodiments

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] Please refer to Figures 1 - 7 , a whole machine for spraying an adhesive roller shaft on a semi-cured sheet, including a chassis 1. A polishing mechanism 6 is provided at the upper end of the chassis 1. In the polishing mechanism 6, there are two sets of mounting frames 601 fixedly installed at the upper end of the chassis 1. On one side of each set of mounting frames 601, a hydraulic telescopic rod 602 is fixedly installed respectively. The telescopic ends of each hydraulic telescopic rod 602 are fixedly installed with a movable block 604 respectively. A spring 603 is sleeved on the outer wall of each hydraulic telescopic rod 602. One side of the spring 603 is fixedly installed with the mounting frame 601, and the other end of the spring 603 is fixedly installed with the movable block 604. The same polishing roller 606 is rotatably installed on the inner walls of the two movable blocks 604. A third motor 605 is installed on the outer wall of one of the movable blocks 604. The output shaft of the third motor 605 is fixedly installed with the polishing roller 606. A conveying mechanism 2 for conveying iron sand is arranged inside the chassis 1. A rotating mechanism 3 for rotating the adhesive roller shaft is arranged at the upper end of the chassis 1. A magnetic bar 309 for magnetically attracting iron sand is arranged in the rotating mechanism 3. A spraying mechanism 4 for spraying the adhesive roller shaft is arranged at the upper end of the rotating structure. Two UV ultraviolet lamps 5 are installed on the inner walls of the rotating mechanism 3 on both sides of the spraying mechanism 4. The conveying mechanism 2 can convey the iron sand. The rotating mechanism 3 can drive the adhesive roller shaft to rotate. Under the cooperation of the magnetic bar 309, the iron sand is adsorbed outside the adhesive roller shaft. Then, the spraying mechanism 4 can spray non-stick glue on the adhesive roller shaft. The UV ultraviolet lamp 5 can quickly dry the sprayed non-stick glue. Then, the polishing roller 606 driven by the third motor 605 can polish the cured non-stick glue and iron sand evenly in each layer. The hydraulic telescopic rod 602 and the spring 603 can be adapted to add and thicken the polishing layer by layer, thereby enhancing the automation of the roller shaft processing, enhancing the layer uniformity, and strengthening the success rate of the finished product production.

[0028] Specifically, refer to Figure 1 and Figure 3 , the conveying mechanism 2 includes two conveying rollers 201 rotatably installed on the inner wall of the chassis 1. The same iron sand conveyor belt 202 is tensioned and sleeved on the outer walls of the two conveying rollers 201. A first motor 203 is installed on the outer wall of the chassis 1. The output shaft of the first motor 203 is fixedly installed with one of the conveying rollers 201. The chassis 1 can play a role in rotatably supporting the conveying roller 201. The first motor 203 can drive the conveying roller 201 to rotate. The conveying roller 201 and the iron sand conveyor belt 202 cooperate to convey the iron sand.

[0029] Specifically, referring to Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 7 , the rotating mechanism 3 includes a fixed frame 301 fixedly installed at the upper end of the chassis 1. A rotating groove 303 is formed in the inner wall on one side of the fixed frame 301. A rotating disk 304 is rotatably connected to the inner wall of the fixed frame 301 located inside the rotating groove 303. A second motor 302 is installed on the outer wall of the fixed frame 301, and the output shaft of the second motor 302 is fixedly installed with the rotating disk 304. The chassis 1 can fix the fixed frame 301, and the rotating groove 303 inside the fixed frame 301 can accommodate the rotating disk 304. Moreover, the second motor 302 on the outer wall of the chassis 1 can drive the rotating disk 304 to rotate. A circular hole 310 is formed in the inner wall on the side of the fixed frame 301 away from the rotating groove 303. A bearing 311 is embedded in the inner wall of the fixed frame 301 located inside the circular hole 310. The inner ring wall of the bearing 311 is embedded with a feeding tray 312. A limiting ring 313 is fixedly installed on the inner wall of the feeding tray 312, and a magnetic rod 309 is fixedly installed on the inner wall of the feeding tray 312 between the limiting rings 313. The circular hole 310 can accommodate the bearing 311, and the feeding tray 312 can be slidably inserted into the bearing 311. The feeding tray 312 can fix the limiting ring 313 and the magnetic rod 309. The limiting ring 313 sleeves the inner wall of the roller shaft, thus facilitating the feeding of the roller shaft. And the cooperation of the bearing 311 facilitates the rotation of the roller shaft. A clamping groove 305 is formed in the inner wall of the rotating disk 304. A cross-shaped block 306 is fixedly installed on the side of the magnetic rod 309 away from the feeding tray 312. The cross-shaped block 306 located inside the clamping groove 305 is slidably clamped with the inner wall of the rotating disk 304. By the cross-shaped block 306 being clamped into the clamping groove 305 inside the rotating disk 304, it is convenient to drive the magnetic rod 309 to rotate when the rotating disk 304 rotates, thereby driving the feeding tray 312 to rotate; A plurality of electric push rods 307 are fixedly installed on the inner wall of the rotating disk 304 around the clamping groove 305. The telescopic ends of each group of electric push rods 307 are respectively fixedly installed with a blocking block 308. The rotating disk 304 can fix the electric push rods 307, and the electric push rods 307 can drive the blocking blocks 308 to stretch and retract, thereby positioning the roller shaft.

[0030] Specifically, referring to Figure 1 , Figure 3 , Figure 5 and Figure 6, an installation hole 314 is provided on the inner top wall of the fixing frame 301. The UV ultraviolet lamps 5 on both sides of the installation hole 314 are installed on the inner top wall of the fixing frame 301. The fixing frame 301 can fix the UV ultraviolet lamps 5, and the UV ultraviolet lamps 5 can quickly dry the coating. The spraying mechanism 4 includes a liquid storage shell 401 fixedly installed at the upper end of the fixing frame 301, and the liquid storage shell 401 is located inside the installation hole 314. A plurality of spray heads 402 are fixedly installed at the lower end of the liquid storage shell 401, and an external connecting pipe 403 is fixedly installed at the upper end of the liquid storage shell 401. The fixing frame 301 can fix the liquid storage shell 401, and the external connecting pipe 403 can connect the liquid supply mechanism and the liquid storage shell 401, so as to facilitate the spray heads 402 to spray the roller shaft.

[0031] Working principle: Inject the non-stick coating into the liquid storage shell 401, connect the liquid supply mechanism through the external connecting pipe 403 to ensure smooth coating supply. There is an external sand spraying device above the conveyor belt, and the iron sand is evenly laid on the iron sand conveyor belt 202. The roller shaft to be processed is sleeved on the feeding tray 312, and preliminary positioning is realized through the limiting ring 313. Then the roller shaft is passed through the bearing 311, and the feeding tray 312 is embedded in the inner ring wall of the bearing 311. The cross block 306 of the magnetic rod 309 slides and is clamped into the card slot 305, and then the push block 308 is pushed to expand and contract until it is in close contact with the inner walls at both ends of the roller shaft, completing the precise positioning of the roller shaft and realizing the synchronous connection between the roller shaft and the rotating mechanism 3; Start the second motor 302 to drive the rotating disk 304 and the feeding tray 312 to rotate synchronously, and then drive the roller shaft to rotate at a set speed. Start the first motor 203 to drive the conveying roller 201 and the iron sand conveyor belt 202 to operate, and transport the iron sand to the lower part of the roller shaft. Under the action of the magnetic rod 309, the iron sand is adsorbed on the surface of the rotating roller shaft to form an iron sand layer; Start the spraying mechanism 4, and evenly spray the non-stick coating on the surface of the roller shaft through the spray heads 402 to cover the iron sand layer. Synchronously start the UV ultraviolet lamp 5 to quickly cure the sprayed non-stick glue and form a firm coating; According to the process requirements, repeat the steps of iron sand transportation and adsorption, non-stick glue spraying and curing to form a multi-layer composite coating of iron sand and non-stick glue. After each layer of processing is completed, through the cooperation of the hydraulic telescopic rod 602 and the spring 603, adjust the distance between the polishing roller 606 and the roller shaft to ensure the polishing effect. Start the third motor 605 to drive the polishing roller 606 to rotate at a high speed, polish the cured coating, remove the surface unevenness, and improve the coating uniformity; Turn off each motor and the UV ultraviolet lamp 5, stop the equipment operation, retract the electric push rod 307, release the positioning of the roller shaft, and take out the processed roller shaft from the feeding tray 312; Regularly clean the residual iron sand on the iron sand conveyor belt 202 to ensure the smooth operation of the conveying mechanism 2. Check the spraying mechanism 4 and the liquid storage shell 401, clean the blockage of the spray head 402, and replenish the non-stick coating. Clean the surface of the polishing roller 606 to remove the debris and dirt generated during the polishing process, and an external device vacuum cleaner can be set above the polishing roller 606; This work process realizes the efficient and precise processing of the adhesive roller shaft on the semi-cured sheet through automated spraying and adsorption technologies, combined with hierarchical processing and polishing, improving the success rate of finished product production and product quality.

[0032] Finally, it should be noted that in the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "vertical", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0033] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A semi-cured sheet sizing roll shaft spraying machine, comprising a chassis (1), characterized in that: At the upper end of the chassis (1), a polishing mechanism (6) is provided. In the polishing mechanism (6), there are two sets of mounting frames (601) fixedly installed at the upper end of the chassis (1). On one side of each set of mounting frames (601), a hydraulic telescopic rod (602) is fixedly installed respectively. The telescopic end of each hydraulic telescopic rod (602) is fixedly installed with a movable block (604). A spring (603) is sleeved on the outer wall of each hydraulic telescopic rod (602). One side of the spring (603) is fixedly installed with the mounting frame (601), and the other end of the spring (603) is fixedly installed with the movable block (604). A polishing roller (606) is rotatably installed on the inner walls of the two movable blocks (604). A third motor (605) is installed on the outer wall of one of the movable blocks (604), and the output shaft of the third motor (605) is fixedly installed with the polishing roller (606). Inside the chassis (1), a conveying mechanism (2) for conveying iron sand is provided. At the upper end of the chassis (1), a rotating mechanism (3) for rotating the glue applicator roller shaft is provided. In the rotating mechanism (3), a magnetic bar (309) for magnetically attracting iron sand is provided. At the upper end of the rotating structure, a spraying mechanism (4) for spraying on the glue applicator roller shaft is provided. Two UV ultraviolet lamps (5) are installed on the inner walls of the rotating mechanisms (3) on both sides of the spraying mechanism (4).

2. The whole machine for spraying a sizing roller shaft of a prepreg, according to claim 1, characterized in that: The rotating mechanism (3) includes a fixed frame (301) fixedly installed at the upper end of the chassis (1). A rotating groove (303) is opened on the inner wall of one side of the fixed frame (301). Inside the rotating groove (303), the inner wall of the fixed frame (301) is rotatably connected with a rotating disk (304). A second motor (302) is installed on the outer wall of the fixed frame (301), and the output shaft of the second motor (302) is fixedly installed with the rotating disk (304).

3. The whole machine for spraying the sizing roller shaft of a semi-cured sheet according to claim 2, characterized in that: A circular hole (310) is opened on the inner wall of the fixed frame (301) on the side away from the rotating groove (303). A bearing (311) is embedded in the inner wall of the fixed frame (301) inside the circular hole (310). A feeding tray (312) is embedded in the inner ring wall of the bearing (311). A limiting ring (313) is fixedly installed on the inner wall of the feeding tray (312). The magnetic bar (309) is fixedly installed on the inner wall of the feeding tray (312) between the limiting rings (313).

4. The whole machine for spraying an adhesive roller shaft on a semi-cured sheet according to claim 3, characterized in that: A clamping groove (305) is opened on the inner wall of the rotating disk (304). A cross block (306) is fixedly installed on the side of the magnetic bar (309) away from the feeding tray (312). The cross block (306) inside the clamping groove (305) is slidably clamped with the inner wall of the rotating disk (304).

5. A spraying machine for a sizing roller shaft of a semi-cured sheet, according to claim 4, characterized in that: A plurality of groups of electric push rods (307) are fixedly installed on the inner wall of the rotating disk (304) around the clamping groove (305). The telescopic end of each group of electric push rods (307) is fixedly installed with a blocking block (308).

6. A spraying machine for a sizing roller shaft of a semi-cured sheet, according to claim 5, wherein: The inner top wall of the fixing frame (301) is provided with a mounting hole (314), and the UV ultraviolet lamps (5) located on both sides of the mounting hole (314) are mounted on the inner top wall of the fixing frame (301).

7. A spraying machine for a sizing roller shaft of a semi-cured sheet, according to claim 6, characterized in that: The spraying mechanism (4) includes a liquid storage shell (401) fixedly installed at the upper end of the fixing frame (301), and the liquid storage shell (401) is located inside the mounting hole (314). A plurality of spray heads (402) are fixedly installed at the lower end of the liquid storage shell (401), and an external connecting pipe (403) is fixedly installed at the upper end of the liquid storage shell (401).

8. A spraying machine for a sizing roller shaft of a semi-cured sheet, characterized in that: The conveying mechanism (2) includes two conveying rollers (201) rotatably installed on the inner wall of the bottom frame (1). The outer walls of the two conveying rollers (201) are tensioned with the same iron sand conveyor belt (202). A first motor (203) is installed on the outer wall of the bottom frame (1), and the output shaft of the first motor (203) is fixedly installed with one of the conveying rollers (201).

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