A surface polishing device for a plate impregnation tank production

Abstract

The application discloses a surface polishing device for plate impregnation tank production and relates to the polishing technical field.The surface polishing device comprises a fixing frame, a driving motor is installed on the side wall of the fixing frame, first friction wheels, second friction wheels and two third friction wheels are arranged at the four corners of the fixing frame, the output end of the driving motor is fixed with the first friction wheels, polishing belts are externally sleeved between the first friction wheels, the second friction wheels and the two third friction wheels, the metal iron sheet is arranged in a straight line or in an arc, the end face of the tank body and the inner wall of the tank body can be in full contact with the polishing belts and the metal iron sheet, the polishing belts are ensured to be in close contact with the tank body, the polishing force is larger, the polishing effect is better, the polishing area is larger, the polishing efficiency is higher, the movable wheels are always in contact with the inner wall of the tank body, the outer wall of the tank body and the end face of the tank body against the metal iron sheet and the polishing belts, the polishing of the polishing belts on the tank body is ensured to be more complete, and the tank body is ensured to be polished to be smoother at different positions.

Description

Technical Field

[0001] This invention relates to the field of polishing technology, specifically to a surface polishing device for the production of sheet metal impregnation tanks. Background Technology

[0002] Grinding machines are portable surface treatment devices operated manually. They are compact, flexible in operation, and widely used in industrial equipment maintenance and other scenarios. In the grinding of sheet metal impregnation tanks, manual grinding machines are key tools. They are mainly used to treat the inner and outer surfaces of the tank and the weld seams at the interfaces. During operation, it is necessary to maintain a uniform speed, avoid cross-grinding that leaves marks, and strictly control the force to prevent deformation of the tank wall. This ensures the sealing and service life of the impregnation tank and lays a good foundation for the subsequent sheet metal impregnation process. It is suitable for the fine grinding needs of small impregnation tanks.

[0003] In the existing technology, the surface grinding device for the production of plate impregnation tanks has certain drawbacks. During the grinding operation, the grinding belt is prone to loosening when it comes into contact with the surface of the impregnation tank. Although a pre-tensioning component is provided to pre-tension and limit the grinding belt, in the actual grinding process, the rotation of the tank and the friction of the grinding belt will still cause the grinding belt to be stretched and twisted. The deformed grinding belt cannot always fit the outer arc surface and end face of the tank, which easily leads to local suspension and uneven contact. The grinding quality and grinding efficiency are relatively low. Summary of the Invention

[0004] The purpose of this invention is to provide a surface polishing device for the production of sheet metal impregnation tanks, so as to solve the problems mentioned in the background art.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A surface polishing device for producing plate impregnation tanks includes a fixed frame. A drive motor is mounted on the side wall of the fixed frame, and a first friction wheel, a second friction wheel, and two third friction wheels are arranged at the four corners of the fixed frame. The output end of the drive motor is fixed to the first friction wheel. A polishing belt is sleeved between the first friction wheel, the second friction wheel, and the two third friction wheels. A tight-fitting assembly is arranged at the two corners of the fixed frame and between the two third friction wheels. The tight-fitting assembly includes a first fixing block and a second fixing block. The first fixing block and the second fixing block are both installed at the two corners of the fixed frame. A deformable sheet metal is connected between the first fixing block and the second fixing block. The sheet metal is slidably connected to the inner surface of the polishing belt. The sheet metal is adapted to the side wall and end face of the tank. The polishing belt is located between the sheet metal and the tank. The sheet metal and the polishing belt are in close contact to ensure that the polishing belt is in full contact with the tank.

[0007] As a preferred embodiment of the present invention, the second fixing block is internally connected to a first fixing pin, one end of the metal sheet is provided with a connecting hole, and the metal sheet is fitted with the first fixing pin through the connecting hole. The first fixing block is internally connected to a second fixing pin, the other end of the metal sheet is wrapped around the outside of the second fixing pin, and the other end of the metal sheet is connected to the second fixing pin by friction locking.

[0008] As a preferred embodiment of the present invention, a third fixing pin and a square block are provided on the inner wall of the first fixing block and on one side of the second fixing pin. The third fixing pin and the square block are integrally manufactured. A clamping block is installed on the outside of the square block and inside the first fixing block. Anti-slip teeth are provided at the contact point between the clamping block and the metal sheet. The metal sheet is located in the gap between the second fixing pin and the third fixing pin. The anti-slip teeth generate friction after pressing the surface of the metal sheet. The anti-slip teeth are used to prevent the metal sheet from sliding relative to the second fixing pin.

[0009] As a preferred embodiment of the present invention, both the interior of the clamping block and the interior of the first fixing block are provided with square grooves. The square grooves are arranged horizontally inside the interior of the clamping block and the interior of the first fixing block. The square block passes through the interior of the square groove of the clamping block and the interior of the square groove of the first fixing block. The square block and the square groove are detachable and can be installed separately. The square block and the square groove are used to restrict the rotation of the clamping block. The third fixing pin is used to remove the square block from the interior of the square groove.

[0010] As a preferred embodiment of the present invention, a fourth fixing pin is provided inside the first fixing block and the second fixing block respectively. The two fourth fixing pins are arranged laterally inside the first fixing block and the second fixing block respectively. Guide wheels are sleeved on the outside of the fourth fixing pins of the first fixing block and the second fixing block. The outside of the guide wheels is used to guide the grinding belt.

[0011] As a preferred embodiment of the present invention, a connecting frame is mounted on the surface of the fixed frame. The connecting frame is located at the symmetrical axis position of the two third friction wheels. An extrusion assembly is provided at the end of the connecting frame. The extrusion assembly includes a fixing strip, which is welded to the side wall of the connecting frame. Several sets of cylinders are installed inside the fixing strip. A fixing sleeve is welded to the end of each cylinder. A fifth fixing pin and a movable wheel of the same specification are installed inside each fixing sleeve. The fifth fixing pin is rotatably connected to the fixing sleeve. The movable wheel is used to abut against the grinding belt to keep the metal sheet and the can in contact.

[0012] As a preferred embodiment of the present invention, the number of cylinders is one or three, the movable wheel at the end of each cylinder is in contact with the metal sheet, and one of the cylinders and the movable wheel is located at the symmetrical axis position of the two sets of third friction wheels.

[0013] As a preferred technical solution of the present invention, when the grinding belt between the two third friction wheels is arranged in a straight line, the metal sheet is arranged in a straight line outside the two guide wheels, and each movable wheel is arranged in a straight line, and the grinding belt is used to grind the surface of the tank.

[0014] As a preferred technical solution of the present invention, each of the movable wheels is arranged in an arc shape, and the grinding belt between the two third friction wheels is arranged in an arc shape under the action of the inner wall of the tank. The curvature of each movable wheel is adapted to the curvature of the inner wall of the tank, and the grinding belt is used to grind the inner wall of the tank.

[0015] As a preferred technical solution of the present invention, each of the movable wheels is arranged in an arc shape, and the grinding belt between the two third friction wheels is arranged in an arc shape under the action of the outer wall of the tank. The arc of each movable wheel is adapted to the arc of the outer wall of the tank, and the grinding belt is used to grind the outer wall of the tank.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] Equipped with a tight-fitting component, the metal sheet is arranged in a straight line or an arc. The end face and inner wall of the can can fully contact the grinding belt and the metal sheet, ensuring that the grinding belt is in close contact with the can. The grinding force is greater, resulting in a better grinding effect, and the grinding area is larger, resulting in higher grinding efficiency.

[0018] The device is equipped with guide wheels, which not only guide the grinding belt between the two third friction wheels, but also allow the sheet metal to be arranged in a straight line around the outside of the two guide wheels. The guide wheels ensure that the sheet metal is in contact with the grinding belt, which is beneficial for grinding the grinding belt and the end face of the tank.

[0019] Equipped with an extrusion assembly, the relative positions of the three movable wheels are changed according to the different positions of the can body in contact with the grinding belt. The movable wheels, against the metal sheet and the grinding belt, are always in contact with the inner wall, outer wall and end face of the can body, ensuring that the grinding belt grinds the can body thoroughly and that different parts of the can body are ground smooth. Attached Figure Description

[0020] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 This is a main structural diagram of a surface polishing device for producing sheet metal impregnation tanks according to the present invention;

[0022] Figure 2 This is a schematic diagram of the grinding belt and connecting frame of a surface grinding device for producing sheet metal impregnation tanks according to the present invention;

[0023] Figure 3This is a schematic diagram of the tightly fitting component of a surface polishing device for producing sheet metal impregnation tanks according to the present invention;

[0024] Figure 4 This is a schematic diagram of the metal sheet of a surface polishing device for producing a plate impregnation tank according to the present invention;

[0025] Figure 5 This is a schematic diagram of the clamping block and anti-slip teeth of a surface polishing device for producing sheet metal impregnation tanks according to the present invention;

[0026] Figure 6 This is a schematic diagram of the fourth fixing pin and guide wheel of a surface polishing device for producing sheet metal impregnation tanks according to the present invention;

[0027] Figure 7 This is a schematic diagram showing the guide wheel guiding the grinding belt of a surface grinding device for producing a sheet metal impregnation tank according to the present invention.

[0028] Figure 8 This is a schematic diagram of the extrusion assembly of a surface polishing device for producing sheet metal impregnation tanks according to the present invention;

[0029] Figure 9 This is a schematic diagram showing the contact state between the movable wheel and the inner wall of the tank of a surface polishing device for producing sheet metal impregnation tanks according to the present invention.

[0030] Figure 10 This is a schematic diagram showing the contact state between the movable wheel and the outer wall of the tank of a surface polishing device for producing sheet metal impregnation tanks according to the present invention.

[0031] In the diagram: 1. Fixing frame; 2. Drive motor; 3. First friction wheel; 4. Second friction wheel; 5. Third friction wheel; 6. Grinding belt; 7. Connecting frame; 8. Tight-fitting assembly; 81. First fixing block; 82. Second fixing block; 83. Metal sheet; 84. First fixing pin; 85. Second fixing pin; 86. Third fixing pin; 87. Square block; 88. Pressing block; 89. Square groove; 810. Anti-slip teeth; 811. Fourth fixing pin; 812. Guide wheel; 9. Extrusion assembly; 91. Fixing strip; 92. Cylinder; 93. Fixing sleeve; 94. Movable wheel; 95. Fifth fixing pin. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0034] Example 1:

[0035] Please see Figure 1 - Figure 5 As shown, a surface polishing device for producing plate impregnation tanks includes a fixed frame 1. A drive motor 2 is installed on the side wall of the fixed frame 1, and a first friction wheel 3, a second friction wheel 4, and two third friction wheels 5 are arranged at the four corners of the fixed frame 1 in a quadrilateral structure. The output end of the drive motor 2 is fixed to the first friction wheel 3. The drive motor 2 drives the first friction wheel 3 to rotate. A polishing belt 6 is sleeved on the outside between the first friction wheel 3, the second friction wheel 4, and the two third friction wheels 5. Under the frictional force of the polishing belt 6, the first friction wheel 3 rotates, driving the second friction wheel 4 and the two third friction wheels 5 to rotate, so that the polishing belt 6 between the two third friction wheels 5 can polish the tank body. A tight-fitting component 8 is provided at the two corners of the fixed frame 1 and between the two third friction wheels 5. The tight-fitting component 8 includes a first fixing block 81 and a second fixing block 82. The first fixing block 81 and the second fixing block 82 are both installed at the two corners of the fixed frame 1. The positions of the first fixing block 81 and the second fixing block 82 correspond to the positions of the two third friction wheels 5, respectively. A deformable metal sheet 83 is connected between the first fixing block 81 and the second fixing block 82. The metal sheet 83 is slidably connected to the inner surface of the grinding belt 6, so that the grinding belt 6 will not grind the surface of the metal sheet 83. The metal sheet 83 is adapted to the side wall and end face of the tank. The grinding belt 6 is located between the metal sheet 83 and the tank. The metal sheet 83 fits snugly with the grinding belt 6 to ensure that the grinding belt 6 is in full contact with the tank. The end face or side of the tank... When the can wall comes into contact with the grinding belt 6, the grinding belt 6 can be used to grind the can body. The metal sheet 83 can be straightened or formed into an arc shape as needed. When the end face of the can body comes into contact with the grinding belt 6, the grinding belt 6 can be supported by the straight metal sheet 83 to ensure that the grinding belt 6 is in close contact with the end face of the can body. When the side wall of the can body comes into contact with the grinding belt 6, the grinding belt 6 can be supported by the arc-shaped metal sheet 83 to ensure that the grinding belt 6 is in close contact with the side wall of the can body.

[0036] Please see Figure 3 and Figure 4As shown, the second fixing block 82 is internally connected to a first fixing pin 84. One end of the metal sheet 83 is provided with a connecting hole, and the metal sheet 83 is fitted with the first fixing pin 84 through the connecting hole. The connecting hole of the metal sheet 83 is inserted into the first fixing pin 84 of the second fixing block 82, and the metal sheet 83 can be fixed at the first fixing pin 84. The first fixing block 81 is internally connected to a second fixing pin 85. The other end of the metal sheet 83 is wrapped around the outside of the second fixing pin 85, and the other end of the metal sheet 83 is connected to the second fixing pin 85 by friction locking. The other end of the metal sheet 83 is inserted into the gap between the second fixing pin 85 and the third fixing pin 86, so that the metal sheet 83 can be straightened into a straight line or loosened into an arc shape.

[0037] Please see Figure 4 - Figure 6 As shown, a third fixing pin 86 and a square block 87 are provided on the inner wall of the first fixing block 81 and on one side of the second fixing pin 85. The third fixing pin 86 and the square block 87 are integrally manufactured. There is a gap between the square block 87 and the second fixing pin 85, so that the sheet metal 83 can pass through the gap between the second fixing pin 85 and the square block 87. A clamping block 88 is installed on the outside of the square block 87 and inside the first fixing block 81. The clamping block 88 is sleeved on the outside of the square block 87 to prevent the square block 87 from rotating relative to the clamping block 88. Anti-slip teeth 810 are provided at the contact point between the clamping block 88 and the sheet metal 83. Located in the gap between the second fixing pin 85 and the third fixing pin 86, the anti-slip teeth 810 generate friction after pressing against the surface of the metal sheet 83. The anti-slip teeth 810 are used to prevent the metal sheet 83 from sliding relative to the second fixing pin 85. By installing the anti-slip teeth 810 on the outside of the second fixing pin 85, the metal sheet 83 is clamped between the clamping block 88 and the second fixing pin 85. Thus, the anti-slip teeth 810 of the clamping block 88 can prevent the metal sheet 83 from sliding, ensuring that the metal sheet 83 supports the grinding belt 6 and ensures that the metal sheet 83 is in close contact with the grinding belt 6. The grinding belt 6 has a larger contact area with the tank body, resulting in higher grinding efficiency.

[0038] Please see Figure 4 - Figure 6As shown, both the interior of the clamping block 88 and the interior of the first fixing block 81 are provided with square grooves 89. The square grooves 89 are arranged horizontally inside the interior of the clamping block 88 and the first fixing block 81. The square block 87 passes through the interior of the square grooves 89 of the clamping block 88 and the first fixing block 81. The square block 87 and the square grooves 89 are detachable and can be installed separately. The square block 87 and the square grooves 89 are used to restrict the clamping block 88 from rotating. The third fixing pin 86 is used to remove the square block 87 from the square grooves 89. The square block 87 and the square grooves 89 of the clamping block 88 can prevent the clamping block 88 from rotating, ensuring that the clamping block 88 is in close contact with the metal sheet 83. When necessary, the third fixing pin 86 can be held to remove the square block 87 from the square grooves 89 of the clamping block 88. The shape of the metal sheet 83 can be changed or the metal sheet 83 can be pre-tightened to ensure that the grinding belt 6 is in close contact with the metal sheet 83.

[0039] Please see Figure 6 and Figure 7 As shown, a fourth fixing pin 811 is provided inside the first fixing block 81 and the second fixing block 82. The two fourth fixing pins 811 are arranged laterally inside the first fixing block 81 and the second fixing block 82, respectively. Guide wheels 812 are sleeved on the outside of the fourth fixing pins 811 of the first fixing block 81 and the fourth fixing pins 811 of the second fixing block 82. The outside of the guide wheels 812 is used to guide the grinding belt 6. The two fourth fixing pins 811 are installed inside the first fixing block 81 and the second fixing block 82, respectively, and the guide wheels 812 are sleeved on the outside of each fourth fixing pin 811, so that the guide wheels 812 can rotate freely. The guide wheels 812 can not only guide the grinding belt 6, but also allow the metal sheet 83 to pass through the outside of the two guide wheels 812. The metal sheet 83 is arranged in a straight line so that the metal sheet 83 contacts the grinding belt 6.

[0040] It should be noted that when the first friction wheel 3, the second friction wheel 4, and the two third friction wheels 5 are mounted on the fixed frame 1, the drive motor 2 rotates, causing the first friction wheel 3 to rotate. Under the action of the grinding belt 6, each friction wheel is driven. The grinding belt 6 between the two third friction wheels 5 can grind the end face and side wall of the tank. If necessary, the hydraulic cylinder near the second friction wheel 4 can be extended or retracted to change the position of the second friction wheel 4, thereby tightening the grinding belt 6. By holding the fixed frame 1, the grinding belt 6 between the two third friction wheels 5 is brought into contact with the tank. When the end face of the tank is in contact with the grinding belt 6... When in contact, the metal sheet 83 is in close contact with the surface of the grinding belt 6. When the grinding belt 6 grinds the end face of the can, it not only ensures the flatness of the can but also increases the grinding area. When the outer wall of the can comes into contact with the grinding belt 6, the metal sheet 83 is in a relaxed state and is pressed by the clamping block 88 to prevent the metal sheet 83 and the clamping block 88 from sliding. When the outer wall of the can comes into contact with the grinding belt 6, the metal sheet 83, the grinding belt 6 and the side wall of the can are in close contact, so that the grinding belt 6 can grind the side wall of the can more thoroughly and increase the grinding area.

[0041] Please see Figure 2 , Figure 8 - Figure 10 As shown, a connecting frame 7 is mounted on the surface of the fixed frame 1. The connecting frame 7 is located at the symmetrical axis position of the two third friction wheels 5. An extrusion assembly 9 is provided at the end of the connecting frame 7. The extrusion assembly 9 includes a fixing strip 91, which is welded to the side wall of the connecting frame 7. Several sets of cylinders 92 are installed inside the fixing strip 91. The cylinders 92 are installed in a row inside the fixing strip 91 to ensure that the length of each cylinder 92 is the same. A fixing sleeve 93 is welded to the end of each cylinder 92. A fifth fixing pin 95 and a movable wheel 94 of the same specification are installed inside each fixing sleeve 93. The fifth fixing pin 95 is rotatably connected to the fixing sleeve 93. The movable wheel 94 is used to keep the metal sheet 83 of the grinding belt 6 in contact with the can. The cylinder 92 extends and retracts, causing the fixing sleeve 93 to move. The movable wheel 94 inside the fixing sleeve 93 moves accordingly. The position of each movable wheel 94 can be determined according to the shape of the end face, inner wall, and outer wall of the can, thereby ensuring that the movable wheel 94 makes full contact with the grinding belt 6 and the can.

[0042] Please see Figure 8 - Figure 10As shown, the number of cylinders 92 is one or three. The movable wheel 94 at the end of each cylinder 92 is in contact with the metal sheet 83. One of the cylinders 92 and the movable wheel 94 is located at the symmetrical axis of the two sets of third friction wheels 5. When there is only one cylinder 92, it can be ensured that the movable wheel 94 pushes the metal sheet 83 and the grinding belt 6 to contact the can. The three sets of movable wheels 94 can not only increase the contact area between the metal sheet 83, the grinding belt 6 and the can, but also form a straight line or an arc shape according to the arrangement of the movable wheels 94 to ensure that the grinding belt 6 is tightly attached to the can.

[0043] Please see Figure 8 As shown, when the grinding belt 6 between the two third friction wheels 5 is arranged in a straight line, the metal sheet 83 is arranged in a straight line outside the two guide wheels 812, and each movable wheel 94 is arranged in a straight line. The grinding belt 6 is used to grind the flat surface of the can body, and the metal sheet 83 is wrapped around the outside of the two guide wheels 812, so that the metal sheet 83 is straightened. At this time, the can body, the grinding belt 6 and the metal sheet 83 are arranged in a straight line, so that the grinding belt 6 grinds the end face of the can body.

[0044] Please see Figure 9 As shown, each of the movable wheels 94 is arranged in an arc shape, and the grinding belt 6 between the two third friction wheels 5 is arranged in an arc shape under the action of the inner wall of the tank. The extension of each movable wheel 94 causes the movable wheel 94 to push the metal sheet 83 and the grinding belt 6 outward. The three movable wheels 94 are in contact with the inner wall of the tank, and the curvature of each movable wheel 94 is adapted to the curvature of the inner wall of the tank, so that the grinding belt 6 is adapted to the shape of the tank, and the grinding belt 6 is used to grind the inner wall of the tank.

[0045] Please see Figure 10 As shown, each of the movable wheels 94 is arranged in an arc shape, and the grinding belt 6 between the two third friction wheels 5 is arranged in an arc shape under the action of the outer wall of the tank. The extension and retraction of each movable wheel 94 makes the metal sheet 83 and the grinding belt 6 both in a relaxed state. When the outer wall of the tank comes into contact with the metal sheet 83 and the grinding belt 6, the metal sheet 83 and the grinding belt 6 are straightened after contact with the outer wall of the tank. The curvature of each movable wheel 94 is adapted to the curvature of the outer wall of the tank, and the grinding belt 6 is used to grind the outer wall of the tank. The grinding belt 6 can grind the outer wall of the tank.

[0046] It should be noted that when grinding the end face of the tank, the sheet metal 83 can be wrapped around the outside of the guide wheel 812, with the sheet metal 83 and the grinding belt 6 arranged in a straight line. At this time, the end face of the tank contacts the grinding belt 6 and the sheet metal 83, thus the end face of the tank is ground by the grinding belt 6. The grinding area is relatively large, the grinding force is also relatively strong, and the grinding is relatively thorough. When grinding the outer wall of the tank, the outer wall of the tank contacts the two guide wheels 812. The extension and retraction of the three cylinders 92 causes the movable wheel 94 to contact the outer wall of the tank. At this time, the arc formed by the three movable wheels 94 and the arc of the outer wall of the tank... With proper matching, the grinding belt 6 can grind the outer wall of the tank. By moving the fixed frame 1, the grinding belt 6 can grind the arc-shaped outer wall of the tank, and the grinding is more convenient. When it is necessary to grind the inner wall of the tank, the inner wall of the tank comes into contact with the two third friction wheels 5. The extension and retraction of the three cylinders 92 causes the movable wheel 94 to come into contact with the inner wall of the tank. At this time, the arc formed by the three movable wheels 94 matches the arc of the inner wall of the tank, and the grinding belt 6 can grind the inner wall of the tank. By moving the fixed frame 1, the grinding belt 6 can grind the arc-shaped inner wall of the tank, and the grinding is more convenient.

[0047] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A surface polishing device for producing plate impregnation tanks, comprising a fixed frame (1), wherein a drive motor (2) is mounted on the side wall of the fixed frame (1), and a first friction wheel (3), a second friction wheel (4), and two third friction wheels (5) are provided at the four corners of the fixed frame (1), the output end of the drive motor (2) is fixed to the first friction wheel (3), and a polishing belt (6) is externally sleeved between the first friction wheel (3), the second friction wheel (4), and the two third friction wheels (5), characterized in that, At the two corners of the fixing frame (1) and between the two third friction wheels (5), a tight-fitting component (8) is provided. The tight-fitting component (8) includes a first fixing block (81) and a second fixing block (82). The first fixing block (81) and the second fixing block (82) are both installed at the two corners of the fixing frame (1). A deformable metal sheet (83) is connected between the first fixing block (81) and the second fixing block (82). The metal sheet (83) is slidably connected to the inner surface of the grinding belt (6). The metal sheet (83) is adapted to the side wall and end face of the tank. The grinding belt (6) is located between the metal sheet (83) and the tank. The metal sheet (83) is in contact with the grinding belt (6).

2. The surface polishing device for sheet metal impregnation tank production according to claim 1, characterized in that, The second fixing block (82) is internally connected to a first fixing pin (84). One end of the metal sheet (83) is provided with a connecting hole, and the metal sheet (83) is fitted with the first fixing pin (84) through the connecting hole. The first fixing block (81) is internally connected to a second fixing pin (85). The other end of the metal sheet (83) is wrapped around the outside of the second fixing pin (85), and the other end of the metal sheet (83) is connected to the second fixing pin (85) through friction locking.

3. The surface polishing device for sheet metal impregnation tank production according to claim 2, characterized in that, A third fixing pin (86) and a square block (87) are provided on the inner wall of the first fixing block (81) and on the side of the second fixing pin (85). The third fixing pin (86) and the square block (87) are integrally manufactured. A clamping block (88) is installed on the outside of the square block (87) and inside the first fixing block (81). Anti-slip teeth (810) are provided at the contact point between the clamping block (88) and the metal sheet (83). The metal sheet (83) is located in the gap between the second fixing pin (85) and the third fixing pin (86). The anti-slip teeth (810) generate friction after pressing the surface of the metal sheet (83). The anti-slip teeth (810) are used to prevent the metal sheet (83) from sliding relative to the second fixing pin (85).

4. The surface polishing device for sheet metal impregnation tank production according to claim 3, characterized in that, Square slots (89) are provided inside the clamping block (88) and the first fixing block (81). The square slots (89) are arranged horizontally inside the clamping block (88) and the first fixing block (81). The square block (87) penetrates the square slots (89) of the clamping block (88) and the square slots (89) of the first fixing block (81). The square block (87) and the square slots (89) are detachable and can be installed. The square block (87) and the square slots (89) are used to restrict the clamping block (88) from rotating. The third fixing pin (86) is used to remove the square block (87) from the square slots (89).

5. The surface polishing device for sheet metal impregnation tank production according to claim 4, characterized in that, The first fixing block (81) and the second fixing block (82) are both provided with a fourth fixing pin (811). The two fourth fixing pins (811) are arranged laterally inside the first fixing block (81) and the second fixing block (82). The fourth fixing pins (811) of the first fixing block (81) and the fourth fixing pins (811) of the second fixing block (82) are both fitted with guide wheels (812). The guide wheels (812) are used to guide the grinding belt (6).

6. The surface polishing device for sheet metal impregnation tank production according to claim 5, characterized in that, The surface of the fixed frame (1) is equipped with a connecting frame (7). The connecting frame (7) is located at the symmetrical axis position of the two third friction wheels (5). The end of the connecting frame (7) is provided with a pressing assembly (9). The pressing assembly (9) includes a fixing strip (91). The fixing strip (91) is welded to the side wall of the connecting frame (7). Several sets of cylinders (92) are installed inside the fixing strip (91). The end of each cylinder (92) is welded with a fixing sleeve (93). Each fixing sleeve (93) is equipped with a fifth fixing pin (95) and a movable wheel (94) of the same specification. The fifth fixing pin (95) is rotatably connected to the fixing sleeve (93). The movable wheel (94) is used to abut against the grinding belt (6) so that the metal sheet (83) and the can are always in contact.

7. A surface polishing device for sheet metal impregnation tank production according to claim 6, characterized in that, The number of cylinders (92) is one or three. The movable wheel (94) at the end of each cylinder (92) is in contact with the metal sheet (83), and one of the cylinders (92) and the movable wheel (94) is located at the symmetrical axis position of the two sets of third friction wheels (5).

8. A surface polishing device for sheet metal impregnation tank production according to claim 7, characterized in that, When the grinding belt (6) between the two third friction wheels (5) is arranged in a straight line, the metal sheet (83) is arranged in a straight line outside the two guide wheels (812), and each movable wheel (94) is arranged in a straight line, and the grinding belt (6) is used to grind the surface of the tank.

9. A surface polishing device for sheet metal impregnation tank production according to claim 7, characterized in that, Each of the movable wheels (94) is arranged in an arc shape, and the grinding belt (6) between the two third friction wheels (5) is arranged in an arc shape under the action of the inner wall of the tank. The arc of each movable wheel (94) is matched with the arc of the inner wall of the tank, and the grinding belt (6) is used to grind the inner wall of the tank.

10. A surface polishing device for sheet metal impregnation tank production according to claim 7, characterized in that, Each of the movable wheels (94) is arranged in an arc shape, and the grinding belt (6) between the two third friction wheels (5) is arranged in an arc shape under the action of the outer wall of the tank. The arc of each movable wheel (94) is adapted to the arc of the outer wall of the tank, and the grinding belt (6) is used to grind the outer wall of the tank.

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