Multi-station sanding machine

Abstract

The invention belongs to the technical field of sanding machines, and particularly relates to a multi-station sanding machine which comprises a rack and a fixed table plate, and a sanding belt is mounted on the fixed table plate; a pressing roller is installed on the fixed table plate, a partition plate is rotatably installed on the pressing roller, and the pressing roller is located above the abrasive belt. A main collecting box is installed on the fixed table plate, the opening shape of the main collecting box is attached to the discharging end of the abrasive belt, a collecting opening is formed in the fixed table plate, and a secondary collecting box is installed in the collecting opening. A sealing cover is installed on the partition plate, the whole sealing cover inclines towards the discharging end, and the main collecting box, the secondary collecting box and the sealing cover are made of transparent materials. The sanding machine is simple in structure, chippings and dust are sequentially and repeatedly collected through mutual cooperation of the main collecting box and the secondary collecting box, the chipping and dust intercepting and collecting effect is improved, normal use of the sanding machine is guaranteed, and the body health of workers is prevented from being affected.

Description

Technical Field

[0001] The invention belongs to the technical field of sanding machines, in particular to a multi-station sanding machine. Background Art

[0002] Sanding machines are used to grind materials and objects that are uneven, of uneven thickness, and do not meet process requirements. Traditional sanding machines use physical removal methods such as sandpaper, grinding cloth, grinding wheels, and sandpaper to make the surface of the workpiece smoother and flatter, thereby meeting process requirements.

[0003] When the sanding machine is working, the sanding belt will shave off dust and debris from the workpiece. These dust and debris will spread into the working environment, polluting the working environment and affecting the health of the workers. At the same time, when the sanding machine works continuously, dust and debris will adhere to the sanding belt, affecting the sanding effect of the sanding machine and affecting the normal use of the sanding machine. Summary of the invention

[0004] In order to make up for the shortcomings of the prior art, the main collection box and the secondary collection box are used to cooperate with each other to collect debris and dust in sequence for multiple times, thereby improving the interception and collection effect of debris and dust, ensuring the normal use of the sanding machine and avoiding affecting the health of the staff. The present invention proposes a multi-station sanding machine.

[0005] The technical solution adopted by the present invention to solve the technical problem is as follows: the multi-station sanding machine described in the present invention comprises a frame, a fixed table is installed on the frame, mounting blocks are symmetrically installed on the fixed table, a rotating shaft is installed on the mounting block, an abrasive belt is installed on the rotating shaft, a driving motor is installed in the frame, the rotating shaft is connected to the driving motor through a transmission belt, a supporting plate is installed on the fixed table, and the supporting plate supports the abrasive belt; The fixed platen is provided with a lifting bracket, the lifting bracket is located at both sides of the abrasive belt, the lifting bracket is provided with a mounting plate, a plurality of pressure rollers are provided between the mounting plates, a stepping motor is provided on the mounting plate, the stepping motor controls the rotation of the pressure rollers, a partition plate is rotatably provided on the pressure rollers, and the pressure rollers are located above the abrasive belt; The end where the workpiece enters the abrasive belt is the feeding end, and the end where the workpiece leaves the abrasive belt is the discharging end; A main collecting box is installed on the fixed table, and the main collecting box is located at a position close to the discharge end of the fixed table, and the opening of the main collecting box faces the abrasive belt, and the opening shape of the main collecting box fits the discharge end of the abrasive belt. A collecting port is opened on the fixed table, and a secondary collecting box is installed in the collecting port, and the secondary collecting box is located between the feed end and the discharge end. A closed cover is installed on the partition plate, a blocking curtain is installed on one end of the closed cover close to the discharge end, the closed cover is tilted toward the discharge end as a whole, and the main collecting box, the secondary collecting box and the closed cover are made of transparent materials.

[0006] Preferably, a sponge layer is installed on the upper surface of the main collecting box, the upper surface of the sponge layer is higher than the upper surface of the sanding belt, one end of the sponge layer close to the sanding belt is arc-shaped, and a plastic film is pasted on the surface of the sponge layer; The lower end of the barrier curtain contacts the sponge layer.

[0007] Preferably, a bracket plate is installed in the main collecting box, and an elastic sheet is installed on the bracket plate. The upper end of the elastic sheet is close to the position where the discharge end of the sanding belt first enters the main collecting box, and the lower end of the elastic sheet does not contact the inner wall of the main collecting box. The elastic sheet is arc-shaped.

[0008] Preferably, the elastic sheet is made of metal material, has good elasticity, is grounded by fixing the table and the frame, and has a smooth surface. The support plate is located at one end of the elastic sheet close to the abrasive belt.

[0009] Preferably, the main collecting box comprises a support plate, a large blocking plate and a small blocking plate, wherein the support plate and the large blocking plate divide the main collecting box into a large storage area, the lower end of the elastic sheet is located in the large storage area, and the support plate and the small blocking plate divide the main collecting box into a small storage area, wherein the small storage area is close to the abrasive belt; A brush roller is installed on the small blocking plate, and the bristles on the brush roller sweep the surface of the sand belt. The rotation speed of the brush roller is lower than the speed of the sand belt under the damping effect. The brush roller is located in the small storage area and below the elastic sheet.

[0010] Preferably, a shielding plate is installed on one side of the collecting port close to the feeding end, and the shielding plate is tilted upwards and does not contact the abrasive belt.

[0011] Preferably, a baffle ring is installed at the edge of the sanding belt in the width direction, the lower surface of the side plate on the closing cover is located below the upper surface of the baffle ring, and the side plate and the baffle plate are close to each other.

[0012] Preferably, a groove is provided on the side of the retaining ring facing the sand belt, an adsorption layer is installed in the groove, the adsorption layer is magnetic, and fluff is provided on the surface of the adsorption layer; A scraper is installed on the small blocking plate. The scraper is inserted into the groove and is arc-shaped.

[0013] The beneficial effects of the present invention are as follows: 1. The multi-station sanding machine described in the present invention intercepts and collects the debris and dust generated by belt grinding in sequence for multiple times by arranging a main collecting box, a brush roller, a collecting port, and a secondary collecting box, thereby improving the collection effect of the debris and dust. At the same time, the movement of the debris and dust is guided by an elastic sheet and a shielding plate, thereby promoting the debris and dust to enter the collecting box, and shielding the debris and dust in the collecting box, thereby reducing the possibility of the debris and dust being affected and scattered again.

[0014] 2. The multi-station sanding machine described in the present invention isolates and closes the working area of ​​the sanding machine where the sanding belt sands the workpiece relative to the external environment by arranging a partition plate, a closed cover, a blocking curtain and a sponge layer, thereby reducing the possibility of debris and dust generated during the sanding process being scattered and flying around, and guiding and directing the debris and dust, making it convenient to intercept and collect the debris and dust.

[0015] 3. The multi-station sanding machine described in the present invention, by setting side plates and baffle rings, makes the side plates and baffle rings contact each other, which is convenient for the closing cover to close the working area on the sanding belt, and avoids the side plates directly contacting the surface of the sanding belt, which leads to serious wear of the side plates and gaps between the side plates and the sanding belt, which makes it easy for debris and dust to pass through the gaps, polluting the working environment and affecting the normal use of the sanding machine. At the same time, the side plates block the baffle rings, thereby limiting the position of the sanding belt and ensuring the stable position of the sanding belt during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] Figure 1 It is a stereoscopic diagram of the sanding machine of the present invention from a first viewing angle; Figure 2 is a stereogram of the sanding machine of the present invention from a second viewing angle; Figure 3 It is a schematic diagram of the installation position of the pressure roller in the sanding machine of the present invention; Figure 4 It is a partial cross-sectional view of the sanding belt and the closing cover in the sanding machine of the present invention; Figure 5 is a cross-sectional view of a main collecting box in the sanding machine of the present invention from a first viewing angle; Figure 6 is a cross-sectional view of the main collecting box in the sanding machine of the present invention from a second viewing angle; Figure 7 It is a structural schematic diagram of the main collecting box in the sanding machine of the present invention; Figure 8 yes Figure 3 A partial enlarged view of the middle part; Fig. 9 yes Figure 4 A partial enlarged view of point B in the middle; Fig.10 yes Figure 5 A partial enlarged view of point C in the middle; Fig.11 yes Figure 7 A partial enlarged view of point D in the middle; In the figure: frame 1, fixed table 11, collecting port 12, secondary collecting box 121, baffle 122, sanding belt 2, mounting block 21, rotating shaft 22, supporting plate 23, pressing roller 3, mounting plate 31, lifting bracket 311, stepping motor 312, partition plate 32, closing cover 33, side plate 331, blocking curtain 332, main collecting box 4, large storage area 41, large blocking plate 411, small storage area 42, small blocking plate 421, bracket plate 43, elastic sheet 44, brush roller 45, sponge layer 46, scraper 47, baffle ring 5, adsorption layer 51, feed end F, discharge end E. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0019] like Figures 1 to 11 As shown, a multi-station sanding machine of the present invention comprises a frame 1, a fixed platen 11 is mounted on the frame 1, a mounting block 21 is symmetrically mounted on the fixed platen 11, a rotating shaft 22 is mounted on the mounting block 21, a sanding belt 2 is mounted on the rotating shaft 22, a driving motor is mounted in the frame 1, the rotating shaft 22 is connected to the driving motor through a transmission belt, a supporting plate 23 is mounted on the fixed platen 11, and the supporting plate 23 supports the sanding belt 2; The fixed platen 11 is provided with a lifting bracket 311, the lifting bracket 311 is located at both sides of the abrasive belt 2, the lifting bracket 31 is provided with a mounting plate 31, a plurality of groups of pressing rollers 3 are installed between the mounting plates 31, a stepping motor 312 is provided on the mounting plate 31, the stepping motor 312 controls the rotation of the pressing rollers 3, a partition plate 32 is rotatably provided on the pressing rollers 3, and the pressing rollers 3 are located above the abrasive belt 2; The end where the workpiece enters the abrasive belt 2 is the feeding end F, and the end where the workpiece leaves the abrasive belt 2 is the discharging end E; A main collecting box 4 is installed on the fixed platen 11, and the main collecting box 4 is located on the fixed platen 11 near the discharge end E. The opening of the main collecting box 4 faces the abrasive belt 2, and the opening shape of the main collecting box 4 fits the discharge end E of the abrasive belt 2. A collecting port 12 is opened on the fixed platen 11, and a secondary collecting box 121 is installed in the collecting port 12. The secondary collecting box 121 is located between the feed end F and the discharge end E. A closed cover 33 is installed on the partition plate 32, and a blocking curtain 332 is installed at one end of the closed cover 33 close to the discharge end E. The closed cover 33 is tilted toward the discharge end E as a whole. The main collection box 4, the secondary collection box 121, and the closed cover 33 are made of transparent materials; During operation, the staff places the workpiece to be processed on the sanding machine from the feed end F, so that the workpiece enters between the sanding belt 2 and the pressure roller 3, and is driven by the pressure roller 3 to gradually pass through the surface of the sanding belt 2, so that the sanding belt 2 sands the surface of the workpiece; At the same time, since the pressure roller 3 is installed through the lifting bracket 311, it is convenient for the staff to adjust the height of the lifting bracket 311, change the distance between the pressure roller 3 and the sanding belt 2 at the discharge end E and the feed end F, and the thickness of the workpiece that is ground off when it reaches the discharge end E meets the processing target, avoiding the workpiece from being over-sanded or under-sanded, which affects the effect of the workpiece sanding treatment. At the same time, the staff can also adjust the speed of the stepping motor 312 through the controller, adjust the speed of the workpiece passing through the sanding machine, and fully ensure that the workpiece sanding effect is good; At the same time, when the driving motor drives the sanding belt 2 to move at a high speed to perform post-sanding treatment on the surface of the workpiece, the debris and dust polished off from the surface of the workpiece by the sanding belt 2 will be driven toward the discharge end E. At this time, the debris and dust driven by the sanding belt 2 are collected and intercepted by the main collecting box 4 installed at the discharge end E: after the debris and dust driven by the sanding belt 2 pass through the discharge end E and enter the main collecting box 4, the sanding belt 2 will change its movement direction around the rotating shaft 22 at the discharge end E, which will cause the driven debris and dust to be thrown into the main collecting box 4, reducing the impact of the sanding belt 2 on the debris and dust, and then causing the debris and dust to fall to the bottom or collide with the inner wall of the main collecting box 4 and fall to the bottom, thereby achieving the interception and collection of the debris and dust, thereby preventing the debris and dust generated during the operation of the sanding machine from scattering everywhere, polluting the working environment, affecting the normal operation of the sanding machine and threatening the health of the staff; At the same time, when the debris and dust driven by the sanding belt 2 enter the main collecting box 4, most of the debris and dust will be collected and intercepted inside the main collecting box 4. At this time, a small part of the debris and dust may continue to be driven by the sanding belt 2 or be carried away by the airflow caused by the high-speed movement of the sanding belt 2. Since a collecting port 12 and a secondary collecting box 121 are provided below the sanding belt 2, the debris and dust carried away by the airflow driven by the sanding belt 2 or moved will fall from the collecting port 12 to the secondary collecting box 121. Since the collecting port 12 is provided on the fixed table 11, and the lower surface of the sanding belt 2 is close to the surface of the fixed table 11, the debris and dust continued to be driven by the sanding belt 2 will fall into the secondary collecting box 121. The debris and dust that slide toward the collecting port 12 under the action of inertia and then fall into the secondary collecting box 121 or are carried by the airflow, when reaching the collecting port 12, the space in the collecting port 12 and the secondary collecting box 121 will become larger relative to the gap between the sanding belt 2 and the fixed table 11, that is, when the airflow reaches the collecting port 12, the space is relatively expanded, so that the speed of the airflow is reduced, so that the carried debris and dust fall from the collecting port 12 to the secondary collecting box 121, so that the main collecting box 4 and the secondary collecting box 121 cooperate with each other, improve the collection effect of the debris and dust generated during the operation of the sanding machine, and avoid the situation where the debris and dust are randomly scattered, pollute the environment, and affect the health of the staff; At the same time, since there are multiple groups of pressure rollers 3 installed, the partition plates 32 installed on the pressure rollers 3 can maintain a stable position, and the partition plates 32 will divide the working area on the sanding belt 2 into multiple workstations, which is convenient for sanding multiple workpieces at the same time, thereby improving the working efficiency of the sanding machine. At the same time, a closed cover 33 is installed on the partition plate 32, so that the process of the sanding belt 2 sanding the workpiece is relatively isolated and closed from the external environment as much as possible, thereby reducing the possibility of debris and dust generated during the sanding process flying around and polluting the working environment. At the same time, the closed cover 33 can also restrain and guide the generated debris and dust, promote the debris and dust to enter the main collection box 4, and improve the interception and collection effect of debris and dust; At the same time, the closed cover 33 is tilted as a whole toward the discharge end E, which makes the end of the closed cover 33 close to the discharge end E relatively low. After the debris and dust contact the inner wall of the closed cover 33, the tilted inner wall will prompt the debris and dust to continue to move toward the discharge end E, thereby improving the collection effect. In addition, the main collecting box 4, the secondary collecting box 121, and the closed cover 33 are prepared by transparent materials, so that the interception and collection effect of the debris and dust can be seen relatively intuitively, so that the staff can clean up the collected debris and dust in time to ensure the normal operation of the sanding machine.

[0020] As an embodiment of the present invention, a sponge layer 46 is installed on the upper surface of the main collecting box 4, the upper surface of the sponge layer 46 is higher than the upper surface of the sanding belt 2, the end of the sponge layer 46 close to the sanding belt 2 is arc-shaped, and a plastic film is pasted on the surface of the sponge layer 46; The lower end of the blocking curtain 332 contacts the sponge layer 46; Since the upper surface of the sponge layer 46 is higher than the upper surface of the sanding belt 2, when the workpiece leaves the sanding machine from the discharge end E, the sponge layer 46 will fill the gap between the workpiece and the main collecting box 4, thereby improving the sealing and isolation effect between the opening of the main collecting box 4 and the external environment as much as possible, so that the debris and dust driven and entrained by the sanding belt 2 can be effectively intercepted and collected by the main collecting box 4, thereby preventing the debris and dust from floating around and affecting the normal operation and sanding effect of the sanding machine; At the same time, since the sponge layer 46 fills the gap between the workpiece and the main collecting box 4, and the closing cover 33 divides and isolates the working area of ​​the sanding machine from the external environment, the isolation effect between the working area of ​​the sanding machine and the external environment will be further improved, and debris and dust will be prevented from floating around in the external environment, affecting the normal use of the sanding machine and affecting the health of the staff; At the same time, by sticking a plastic layer on the surface of the sponge layer 46, the surface of the sponge layer 46 is made smooth, which facilitates the passage of the workpiece through the surface of the sponge layer 46 and prevents debris and dust from entering the sponge layer 46, affecting the normal use of the sponge layer 46 and shortening the service life of the sponge layer 46.

[0021] As an embodiment of the present invention, a support plate 43 is installed in the main collecting box 4, and an elastic sheet 44 is installed on the support plate 43. The upper end of the elastic sheet 44 is close to the position where the discharge end E of the abrasive belt 2 first enters the main collecting box 4, and the lower end of the elastic sheet 44 does not contact the inner wall of the main collecting box 4. The elastic sheet 44 is arc-shaped; Since the high-speed movement of the sanding belt 2 will drive the generated debris and dust to move together, or the high-speed movement of the sanding belt 2 will drive the air near the surface of the sanding belt 2 to flow quickly, and then the debris and dust are entrained and flown by the flowing air, at this time, by setting the elastic sheet 44, the debris, dust and the flying airflow entering the main collection box 4 will be guided and guided by the elastic sheet 44, so that the debris and dust move downward along the surface of the elastic sheet 44 as much as possible, and then be intercepted and collected, and the influence of the rotation of the sanding belt 2 on the debris and dust is isolated as much as possible, so that they can fall to the bottom of the main collection box 4 by themselves, and the debris and dust are intercepted and collected; At the same time, since the elastic sheet 44 is arc-shaped and is installed at an angle in the main collecting box 4, the distance between the lower end of the elastic sheet 44 and the inner wall of the main collecting box 4 is relatively small, and the space below the elastic sheet 44 is relatively large, that is, the elastic sheet 44 and the main collecting box 4 cooperate with each other to form a space with a relatively small entrance, so that after debris and dust slide off the elastic sheet 44 and enter the space below the elastic sheet 44, the debris and dust are not easily affected by the movement of the sanding belt 2, and the debris and dust are not easy to leave from the space below the elastic sheet 44, thereby ensuring the effect and reliability of intercepting and collecting the debris and dust.

[0022] As an embodiment of the present invention, the elastic sheet 44 is made of metal material, the elastic sheet 44 has good elasticity, the elastic sheet 44 is grounded by fixing the table 11 and the frame 1, and the surface of the elastic sheet 44 is smooth; The support plate 43 is located at one end of the elastic sheet 44 close to the abrasive belt 2; Since the elastic sheet 44 has good elasticity and the bracket plate 43 is located at the end of the elastic sheet 44 close to the sanding belt 2, the end of the elastic sheet 44 away from the sanding belt 2 will be in a free and suspended state, so that the elastic sheet 44 will continuously vibrate and swing up and down under the impact of the airflow, debris and dust driven by the operation of the sanding belt 2 and the vibration generated by the operation of the sanding machine, thereby causing the debris and dust falling on the surface of the elastic sheet 44 to slide down from its surface, so as to prevent the debris and dust from gathering on the surface of the elastic sheet 44 and affecting the interception and collection effect of the debris and dust; At the same time, since the surface of the elastic sheet 44 is smooth and the elastic sheet 44 is grounded, the elastic sheet 44 and the debris and dust that fall on its surface will not be affected by static electricity. At the same time, the sliding and falling speed of the debris and dust that fall on its surface is further accelerated, and the accumulation of debris and dust on the surface of the elastic sheet 44 is avoided as much as possible, which affects the normal use of the elastic sheet 44.

[0023] As an embodiment of the present invention, the main collecting box 4 includes a bracket plate 43, a large blocking plate 411 and a small blocking plate 421, the bracket plate 43 and the large blocking plate 411 divide the main collecting box 4 into a large storage area 41, the lower end of the elastic sheet 44 is located in the large storage area 41, the bracket plate 43 and the small blocking plate 421 divide the main collecting box 4 into a small storage area 42, and the small storage area 42 is close to the abrasive belt 2; A brush roller 45 is installed on the small blocking plate 421. The bristles on the brush roller 45 sweep the surface of the sand belt 2. The rotation speed of the brush roller 45 is lower than the speed of the sand belt 2 under the damping effect. The brush roller 45 is located in the small storage area 42. The brush roller 45 is located below the elastic sheet 44. When the sanding belt 2 is grinding the workpiece, a part of the debris and dust generated is separated and scattered and then moved by the sanding belt 2, while the other part of the debris and dust will adhere to the surface of the sanding belt 2 and is not easy to separate from the surface of the sanding belt 2. Therefore, after the sanding belt 2 enters the main collecting box 4, the debris and dust driven by the sanding belt 2 and not firmly attached to the surface of the sanding belt 2 will be thrown out horizontally under the action of inertia, and then the elastic sheet 44 will intercept and collect this part of the debris and dust into the large storage area 41; At the same time, the relatively firmly attached debris and dust on the surface of the sand belt 2 will continue to move with the sand belt 2 until the sand belt 2 passes through the area where the brush roller 45 is located, and the bristles on the brush roller 45 are used to clean the surface of the sand belt 2, and the remaining debris and dust attached to the sand belt 2 are cleaned as much as possible, so as to ensure that the surface of the sand belt 2 is clean and the sanding effect of the sand belt 2 on the workpiece is good. At the same time, the debris and dust cleaned by the brush roller 45 will enter the small storage area 42 for storage; At the same time, since a damping mechanism is provided on the shaft of the brush roller 45, the brush roller 45 will encounter resistance when rotating. Therefore, when the sanding belt 2 rotates and the bristles on the brush roller 45 clean the surface of the sanding belt 2, the brush roller 45 will rotate slowly under the drive of the reaction force, avoiding the bristles in a local area of ​​the brush roller 45 from continuously contacting the sanding belt 2, causing serious wear of the brush roller 45 and affecting the normal use of the brush roller 45.

[0024] As an embodiment of the present invention, a shielding plate 122 is installed on one side of the collecting port 12 close to the feed end F, and the shielding plate 122 is tilted upward, and the shielding plate 122 does not contact the abrasive belt 2; By installing a shielding plate 122 at the collecting port 12, the collecting port 12 and the secondary collecting box 121 form an area where the shielding plate 122 is located that is not easily affected by the airflow brought by the movement of the sanding belt 2, so that the debris and dust intercepted and collected in the secondary collecting box 121 are not easily stirred again by the airflow brought by the sanding belt 2, causing the debris and dust to float again; At the same time, since the baffle plate 122 is tilted upward, when the sanding belt 2 passes over the baffle plate 122, the airflow caused by the movement of the sanding belt 2 will also be blocked by the baffle plate 122, thereby significantly reducing the airflow speed through the collecting port 12, and then causing the debris and dust carried by the airflow to fall and be collected, further improving the interception and collection effect of the debris and dust.

[0025] As an embodiment of the present invention, a retaining ring 5 is installed at the edge of the sanding belt 2 in the width direction, and the lower surface of the side plate 331 on the closing cover 33 is located below the upper surface of the retaining ring 5, and the side plate 331 and the retaining plate are close to each other; By installing a retaining ring 5 at the edge of the sanding belt 2, a bulge appears at the edge of the sanding belt 2, which increases the difficulty of dust on the surface of the sanding belt 2 to drift from the edge of the sanding belt 2, and prevents debris and dust generated during the sanding process from entering the gap from the edge of the sanding belt 2 to affect the normal use of the sanding machine, and prevents them from entering the bottom of the sanding belt 2 to affect the normal use of the sanding belt 2; At the same time, the baffle ring 5 is provided to relatively improve the structural strength of the edge of the sanding belt 2, so that the edge of the sanding belt 2 can be in relative contact with the components on the sanding machine, and the position of the sanding belt 2 is restricted, thereby reducing the possibility of deviation of the sanding belt 2 during operation and ensuring the stable operation of the sanding belt 2; At the same time, through the setting of the baffle ring 5, the side plate 331 of the closing cover 33 is covered on the outside of the baffle ring 5 on the sanding belt 2, that is, the side plate 331 and the baffle ring 5 are fitted together to improve the sealing effect of the side plate 331 on the working area on the sanding belt 2, to avoid the lower surface of the side plate 331 directly contacting the sanding belt 2, causing the side plate 331 to be worn, or to avoid the lower surface of the side plate 331 being fitted on the parts on the outside of the sanding belt 2, resulting in the possibility of debris and dust invading from the edge of the sanding belt 2 to the bottom of the sanding belt 2 or the gap of the sander, or to avoid the lower surface of the side plate 331 just contacting the surface of the sanding belt 2, a gap will appear between the side plate 331 and the sanding belt 2, and debris and dust will be likely to fly out.

[0026] As an embodiment of the present invention, a groove is formed on the side of the retaining ring 5 facing the sanding belt 2, and an adsorption layer 51 is installed in the groove. The adsorption layer 51 is magnetic, and fluff is arranged on the surface of the adsorption layer 51. The small blocking plate 421 is provided with a scraper 47, which is inserted into the groove and is arc-shaped; By providing the groove and the adsorption layer 51 on the retaining ring 5, when the debris and dust on the sanding belt 2 approach the retaining ring 5, the debris and dust are easily entered into the groove and fixed by the adsorption layer 51, thereby preventing the debris and dust from floating around and causing the debris and dust to pass over the retaining ring 5 and enter the gap of the sanding machine. At the same time, when the retaining ring 5 reaches the small storage area 42, the scraper 47 on the small blocking plate 421 will scrape and clean the adsorption layer 51 in the groove, so that the debris and dust collected in the groove will be separated and enter the small storage area 42, thereby preventing the debris and dust from continuing to accumulate in the groove and affecting the normal operation of the groove. At the same time, since the adsorption layer 51 is magnetic, it can adsorb and fix the debris and dust generated by ferromagnetic workpieces. After the debris and dust generated by non-ferromagnetic workpieces enter the groove, they will contact the fluff layer on the surface of the adsorption layer 51 and then be adsorbed and fixed in the fluff layer.

[0027] The specific workflow is as follows: The staff places the workpiece to be processed on the sanding machine from the feed end F, so that the workpiece enters between the sanding belt 2 and the pressure roller 3, and is driven by the pressure roller 3 to gradually pass through the surface of the sanding belt 2, so that the sanding belt 2 sands the surface of the workpiece; The height of the lifting bracket 311 is adjusted to change the distance between the pressure roller 3 and the sanding belt 2 at the discharge end E and the feed end F. At the same time, the speed of the stepping motor 312 is adjusted by the controller to adjust the speed of the workpiece passing through the sanding machine; At the same time, when the driving motor drives the sanding belt 2 to move at a high speed, the debris and dust polished from the surface of the workpiece by the sanding belt 2 will be driven toward the discharge end E. At this time, the debris and dust driven by the sanding belt 2 are collected and intercepted by the main collecting box 4 installed at the discharge end E: after the debris and dust driven by the sanding belt 2 pass through the discharge end E and enter the main collecting box 4, the sanding belt 2 will change its movement direction around the rotating shaft 22 at the discharge end E, so that the driven debris and dust will be thrown into the main collecting box 4; At the same time, after the debris and dust driven by the sanding belt 2 enter the main collecting box 4, most of the debris and dust will be collected and intercepted inside the main collecting box 4. At this time, there is a possibility that a small part of the debris and dust will continue to be driven by the sanding belt 2 or be carried away by the airflow brought about by the high-speed movement of the sanding belt 2 and continue to move. The debris and dust driven by the sanding belt 2 or carried away by the moving airflow will fall from the collecting port 12 to the secondary collecting box 121: the debris and dust continued to be driven by the sanding belt 2 will slide toward the collecting port 12 under the action of inertia and then fall into the secondary collecting box 121; or when the debris and dust carried away by the airflow reaches the collecting port 12, the space inside the collecting port 12 and the secondary collecting box 121 will become larger than the gap between the sanding belt 2 and the fixed table 11, that is, when the airflow reaches the collecting port 12, the space is relatively expanded, so that the speed of the airflow is reduced, so that the carried debris and dust fall from the collecting port 12 to the secondary collecting box 121; At the same time, since there are multiple groups of pressure rollers 3 installed, the partition plates 32 installed on the pressure rollers 3 can maintain a stable position, and the partition plates 32 will divide the working area on the sanding belt 2 into multiple stations. At the same time, a closing cover 33 is installed on the partition plates 32; At the same time, the closed cover 33 is tilted toward the discharge end E as a whole, which makes the end of the closed cover 33 close to the discharge end E relatively low. In addition, the main collection box 4, the secondary collection box 121, and the closed cover 33 are made of transparent materials, so that the interception and collection effect of debris and dust can be relatively intuitively seen. Since the upper surface of the sponge layer 46 is higher than the upper surface of the sanding belt 2, when the workpiece leaves the sanding machine from the discharge end E, the sponge layer 46 will fill the gap between the workpiece and the main collecting box 4; At the same time, since the sponge layer 46 fills the gap between the workpiece and the main collecting box 4, and the closing cover 33 divides and isolates the working area of ​​the sanding machine from the external environment, the isolation effect between the working area of ​​the sanding machine and the external environment will be further improved; At the same time, by pasting a plastic layer on the surface of the sponge layer 46, the surface of the sponge layer 46 is made smooth, which facilitates the passage of workpieces on the surface of the sponge layer 46 and prevents debris and dust from entering the sponge layer 46; By providing the elastic sheet 44, the debris, dust and flying airflow entering the main collecting box 4 will be guided and directed by the elastic sheet 44, so that the debris and dust move downward along the surface of the elastic sheet 44 as much as possible; At the same time, since the elastic sheet 44 is arc-shaped and is installed in the main collecting box 4 at an angle, the distance between the lower end of the elastic sheet 44 and the inner wall of the main collecting box 4 is relatively small, and the space below the elastic sheet 44 is relatively large, that is, the elastic sheet 44 and the main collecting box 4 cooperate with each other to form a space with a relatively small entrance; Since the elastic sheet 44 has good elasticity and the bracket plate 43 is located at the end of the elastic sheet 44 close to the sanding belt 2, the end of the elastic sheet 44 away from the sanding belt 2 is in a free and suspended state, so that the elastic sheet 44 will continuously vibrate and swing up and down under the impact of the airflow, debris and dust driven by the operation of the sanding belt 2 and the vibration generated by the operation of the sanding machine; At the same time, since the surface of the elastic sheet 44 is smooth and the elastic sheet 44 is grounded, the elastic sheet 44 and the debris and dust falling on the surface thereof will not be affected by static electricity. After the abrasive belt 2 enters the main collecting box 4, the debris and dust driven by the abrasive belt 2 and loosely attached to the surface of the abrasive belt 2 will be thrown out horizontally under the action of inertia, and then the elastic sheet 44 will intercept and collect the debris and dust into the large storage area 41; At the same time, the relatively firmly attached debris and dust on the surface of the sand belt 2 will continue to move with the sand belt 2 until the sand belt 2 passes through the area where the brush roller 45 is located, and the bristles on the brush roller 45 are used to clean the surface of the sand belt 2. At the same time, the debris and dust cleaned by the brush roller 45 will enter the small storage area 42 for storage; At the same time, since a damping mechanism is provided on the shaft of the brush roller 45, the brush roller 45 will encounter resistance when rotating. Therefore, when the sand belt 2 rotates and the bristles on the brush roller 45 clean the surface of the sand belt 2, the brush roller 45 will rotate slowly driven by the reaction force. By installing a shielding plate 122 at the collecting port 12, the collecting port 12 and the secondary collecting box 121 form an area where the shielding plate 122 is located that is not easily affected by the airflow brought by the movement of the sanding belt 2, so that the debris and dust intercepted and collected in the secondary collecting box 121 are not easily stirred again by the airflow brought by the sanding belt 2; At the same time, since the shielding plate 122 is tilted upward, when the sanding belt 2 passes over the shielding plate 122, the airflow brought by the sanding belt 2 will also be blocked by the shielding plate 122, so that the airflow speed passing through the collecting port 12 is significantly reduced, thereby causing the debris and dust carried by the airflow to fall and be collected; By installing a retaining ring 5 at the edge of the sanding belt 2, a bulge appears at the edge of the sanding belt 2, which increases the difficulty of dust on the surface of the sanding belt 2 to float away from the edge of the sanding belt 2; At the same time, the baffle ring 5 is provided to relatively improve the structural strength of the edge of the abrasive belt 2, so that the edge of the abrasive belt 2 can be relatively in contact with the components on the sanding machine, thereby limiting the position of the abrasive belt 2; At the same time, the baffle ring 5 is provided so that the side plate 331 of the closing cover 33 covers the outside of the baffle ring 5 on the sand belt 2, that is, the side plate 331 and the baffle ring 5 are fitted together to improve the sealing effect of the side plate 331 on the working area on the sand belt 2; By providing the groove and the adsorption layer 51 on the retaining ring 5, when the debris and dust on the sanding belt 2 approach the retaining ring 5, the debris and dust easily enter the groove and are fixed by the adsorption layer 51. At the same time, when the retaining ring 5 reaches the small storage area 42, the scraper 47 on the small blocking plate 421 will scrape and clean the adsorption layer 51 in the groove, so that the debris and dust collected in the groove are separated and enter the small storage area 42. At the same time, since the adsorption layer 51 is magnetic, it can adsorb and fix the debris and dust generated by ferromagnetic workpieces. After the debris and dust generated by non-ferromagnetic workpieces enter the groove, they will contact the fluff layer on the surface of the adsorption layer 51 and then be adsorbed and fixed in the fluff layer.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A multi-station sanding machine, comprising a frame (1), a fixed table (11) being mounted on the frame (1), a mounting block (21) being symmetrically mounted on the fixed table (11), a rotating shaft (22) being mounted on the mounting block (21), a sanding belt (2) being mounted on the rotating shaft (22), a driving motor being mounted in the frame (1), the rotating shaft (22) being connected to the driving motor via a transmission belt, a supporting plate (23) being mounted on the fixed table (11), and the supporting plate (23) supporting the sanding belt (2); A lifting bracket (311) is installed on the fixed table (11), and the lifting bracket (311) is located on both sides of the sanding belt (2). A mounting plate (31) is installed on the lifting bracket (311), and a plurality of groups of pressure rollers (3) are installed between the mounting plates (31). A stepping motor (312) is installed on the mounting plate (31), and the stepping motor (312) controls the rotation of the pressure roller (3). A partition plate (32) is rotatably installed on the pressure roller (3), and the pressure roller (3) is located above the sanding belt (2); The end of the abrasive belt (2) where the workpiece enters is the feeding end (F), and the end of the abrasive belt (2) where the workpiece leaves is the discharging end (E); Features: A main collecting box (4) is installed on the fixed table (11), and the main collecting box (4) is located on the fixed table (11) near the discharge end (E). The opening of the main collecting box (4) faces the abrasive belt (2), and the opening shape of the main collecting box (4) fits the discharge end (E) of the abrasive belt (2). A collecting port (12) is opened on the fixed table (11), and a secondary collecting box (121) is installed in the collecting port (12). The secondary collecting box (121) is located between the feed end (F) and the discharge end (E). A closed cover (33) is installed on the partition plate (32); a blocking curtain (332) is installed at one end of the closed cover (33) close to the discharge end (E); the closed cover (33) is tilted as a whole toward the discharge end (E); and the main collecting box (4), the secondary collecting box (121) and the closed cover (33) are made of transparent material.

2. A multi-station sanding machine according to claim 1, characterized in that: A sponge layer (46) is installed on the upper surface of the main collecting box (4), the upper surface of the sponge layer (46) is higher than the upper surface of the abrasive belt (2), one end of the sponge layer (46) close to the abrasive belt (2) is arc-shaped, and a plastic film is pasted on the surface of the sponge layer (46); The lower end of the barrier curtain (332) contacts the sponge layer (46).

3. A multi-station sanding machine according to claim 1, characterized in that: A support plate (43) is installed in the main collecting box (4), and an elastic sheet (44) is installed on the support plate (43). The upper end of the elastic sheet (44) is close to the position where the discharge end (E) of the sand belt (2) first enters the main collecting box (4), and the lower end of the elastic sheet (44) does not contact the inner wall of the main collecting box (4). The elastic sheet (44) is arc-shaped.

4. A multi-station sanding machine according to claim 3, characterized in that: The elastic sheet (44) is made of metal material, the elastic sheet (44) has good elasticity, the elastic sheet (44) is grounded by fixing the table plate (11) and the frame (1), and the surface of the elastic sheet (44) is smooth; The support plate (43) is located at one end of the elastic sheet (44) close to the abrasive belt (2).

5. A multi-station sanding machine according to claim 3, characterized in that: The main collecting box (4) comprises a support plate (43), a large blocking plate (411) and a small blocking plate (421); the support plate (43) and the large blocking plate (411) divide the main collecting box (4) into a large storage area (41); the lower end of the elastic sheet (44) is located in the large storage area (41); the support plate (43) and the small blocking plate (421) divide the main collecting box (4) into a small storage area (42); the small storage area (42) is close to the abrasive belt (2); A brush roller (45) is mounted on the small blocking plate (421), and the bristles on the brush roller (45) sweep the surface of the sand belt (2). The rotation speed of the brush roller (45) is lower than the speed of the sand belt (2) under the action of damping. The brush roller (45) is located in the small storage area (42), and the brush roller (45) is located below the elastic sheet (44).

6. The multi-station sanding machine according to claim 1, characterized in that: A shielding plate (122) is installed on one side of the collecting port (12) close to the feeding end (F); the shielding plate (122) is tilted upwards and does not contact the sanding belt (2).

7. A multi-station sanding machine according to claim 5, characterized in that: A baffle ring (5) is installed at the edge of the sanding belt (2) in the width direction, the lower surface of the side plate (331) on the closing cover (33) is located below the upper surface of the baffle ring (5), and the side plate (331) and the baffle plate are close to each other.

8. A multi-station sanding machine according to claim 7, characterized in that: The retaining ring (5) is provided with a groove on the side facing the sanding belt (2), an adsorption layer (51) is installed in the groove, the adsorption layer (51) is magnetic, and fluff is arranged on the surface of the adsorption layer (51); A scraper (47) is installed on the small blocking plate (421), and the scraper (47) is inserted into the groove. The scraper (47) is arc-shaped.

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