Printer top cover sheet metal grinding device

Abstract

The present invention discloses a printer top cover sheet metal polishing device, which relates to the technical field of top cover sheet metal polishing, including a polishing table and a polishing piece, wherein the polishing table is a rectangular support table, and the polishing piece is adjustably arranged inside a placement groove of the rectangular support table, and a plurality of transmission rods are rotatably provided on the inner side wall of the rectangular support table, two cylindrical polishing heads form a group, and the outer wall of the connecting block is symmetrically provided with two L-shaped support rods, and a T-shaped sliding rod is slidably inserted into the interior of each T-shaped buffer groove, and the two T-shaped sliding rods between the same group of cylindrical polishing heads are symmetrically distributed with the corresponding transmission rod as the center, and the bottom end of the T-shaped sliding rod is fixedly inserted into the bottom end surface of the placement groove, and the outer wall of each cylindrical polishing head is provided with a second transmission tooth groove that meshes with the first transmission tooth groove. The present invention has the function of quickly adjusting the polishing range according to the size of the sheet metal blank to be polished, and can perform comprehensive polishing operations on sheet metals of different sizes, thereby improving the polishing efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of top cover sheet metal grinding, in particular to a device for grinding the top cover sheet metal of a printer. Background Art

[0002] The sheet metal of the top cover of the printer is an essential component of the printer, and is usually formed by batch casting with a mold. The surface of the sheet metal blank of the top cover of the printer after mold casting has certain burrs. If the blank is directly assembled on the top cover of the printer, the presence of the burrs will cause the top cover of the printer to be unable to be accurately inserted into the installation position. Even if the blank is forcibly installed on the top cover of the printer, the burrs on the surface of the blank are very likely to pierce the hands of the staff. Therefore, the sheet metal blank of the top cover of the printer needs to be polished, and the polishing range of the polishing head of the existing blank polishing equipment is fixed. During polishing, the position of the sheet metal needs to be continuously adjusted. Only when the surface of the sheet metal passes through the polishing head can the comprehensive polishing operation be performed, which is time-consuming and labor-intensive, and affects the polishing efficiency of the sheet metal. Therefore, a sheet metal polishing device for the top cover of the printer is designed here to solve the above problems. Summary of the Invention

[0003] The object of the present invention is to provide a printer top cover sheet metal grinding device to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for polishing sheet metal of the top cover of a printer, comprising a polishing table and a polishing piece, wherein the polishing table is a rectangular support table, which is tilted and has two L-shaped brackets fixed on the back of the rectangular support table. The two L-shaped brackets are used to tilt and fix the rectangular support table, and the rectangular support table serves as a place for polishing the sheet metal of the top cover of the printer.

[0005] A placement slot is provided on the rectangular support platform, and the polishing piece can be adjusted and set inside the placement slot of the rectangular support platform. The top cover sheet metal of the printer to be polished is placed on the polishing piece. The polishing piece can perform a comprehensive polishing operation on one side of the top cover sheet metal of the printer. After polishing one side, turn it over and polish the other side again until the polishing is completed.

[0006] Several transmission rods are rotatably provided on the side wall of one side of the inner side of the rectangular support platform. The outer wall of each transmission rod is provided with a first transmission tooth groove, and the outer wall of each cylindrical grinding head is provided with a second transmission tooth groove that engages with the first transmission tooth groove. The second transmission tooth groove of each cylindrical grinding head is engaged with the first transmission tooth groove of each corresponding outer wall of the transmission rod. The rotating transmission rod can be driven by the engagement of the first transmission tooth groove with the second transmission tooth groove, thereby driving each cylindrical grinding head to rotate synchronously.

[0007] The grinding piece includes several cylindrical grinding heads, two cylindrical grinding heads form a group, and a connecting block is rotatably connected between the two cylindrical grinding heads in the same group. Two L-shaped support rods are symmetrically provided on the outer wall of the connecting block, and a T-shaped buffer groove is provided at the bottom end of each L-shaped support rod. A T-shaped sliding rod is slidably inserted into the interior of each T-shaped buffer groove. The two T-shaped sliding rods between the cylindrical grinding heads in the same group are symmetrically distributed with the corresponding transmission rod as the center, and the bottom end of the T-shaped sliding rod is fixedly plugged into the bottom end surface of the placement groove, and the two adjacent groups of cylindrical grinding heads are close to each other. The two cylindrical grinding heads are rotated and fitted together. According to the grinding requirements, several rows of parallel distributed and rotatable groups of cylindrical grinding heads are set up to grind the sheet metal of the top cover of the printer. The T-shaped sliding rod is fixed to the bottom end surface of the placement slot, and the T-shaped buffer groove of the L-shaped support rod is slid downward along the outer wall of the T-shaped sliding rod, so that the connecting block drives the two cylindrical grinding heads at both ends to adjust toward one end close to the transmission rod, so that the second transmission tooth groove of each cylindrical grinding head can be engaged with the first transmission tooth groove on the outer wall of each corresponding transmission rod to realize power transmission.

[0008] Place the sheet metal blank of the printer top cover to be polished on several cylindrical polishing heads. As long as the sheet metal blank of the printer top cover is positioned and does not change its position, the rotating cylindrical polishing head can quickly polish one side of the sheet metal blank of the printer top cover without changing its position. After the single-side polishing is completed, turn the sheet metal blank of the printer top cover over and perform polishing on the other side of the sheet metal blank.

[0009] The top end of the T-shaped sliding rod is connected to a spring located inside the T-shaped buffer groove. The elastic force of the spring is used to push the L-shaped support rod upward along the outer wall of the T-shaped sliding rod in real time, so that the cylindrical grinding head can be lifted up and separated from the transmission rod.

[0010] In a further embodiment, a transmission groove is opened on the inner side wall of the rectangular support platform, the end of the transmission rod extends to one end close to the transmission groove, and a motor is fixedly provided on the outer wall of the rectangular support platform. The power shaft of the motor rotates and extends to the inside of the transmission groove and is fixedly provided with a linkage rod. The outer wall of the linkage rod is fixedly sleeved with a plurality of evenly spaced first bevel gears, and the end of the transmission rod is fixedly connected to a second bevel gear that meshes with the first bevel gear. The motor provides power to drive the linkage rod to rotate inside the transmission groove, and the first bevel gear rotates synchronously with the rotating linkage rod. Each rotating first bevel gear can drive the second bevel gear at the end of the transmission rod to rotate synchronously, so that each transmission rod rotates synchronously in the same direction, and the rotating transmission rod is used as a transmission member.

[0011] In a further embodiment, a clamping mechanism with an adjustable clamping gap size is provided on the upper end of the rectangular support platform. The clamping gap size of the clamping mechanism is adjusted according to the size of the sheet metal blank on the top cover of the printer. The clamping gap of the device meets the requirements of clamping the sheet metal blank to be polished, thereby improving stability during polishing.

[0012] The clamping mechanism includes two clamping plates, which are distributed parallel to each other on the left and right, and an adjustable clamping gap is provided between the two clamping plates. The clamping plates on both sides are moved toward the side close to the sheet metal blank until the sheet metal blank is clamped. The two clamping plates are used to stably clamp the sheet metal blank to avoid up and down shaking during the grinding process.

[0013] In a further embodiment, an inverted T-shaped slide is provided on the upper end of the rectangular support platform, and the slides are located on the front and rear sides of the placement groove. The bottom end of the splint is fixed with two inverted T-shaped sliders that are respectively slidably engaged with the interior of the front and rear inverted T-shaped slides. The inverted T-shaped sliders are used to slide along the interior of the inverted T-shaped slide, which can not only ensure that the splint can stably adjust the clamping position, but also prevent the splint from detaching from the inverted T-shaped slide.

[0014] In a further embodiment, a threaded hole is provided at one end of each of the two splints, and a threaded adjustment rod is rotatably inserted into the threaded holes of the two splints. The threaded holes of the two splints rotate in opposite directions. By manually rotating the threaded adjustment rod, the two splints can be adjusted to move closer to or further away from each other.

[0015] In a further embodiment, clamping notches are provided at the bottoms of the opposite side walls of the two clamping plates, and the inner walls of the clamping notches are provided with downward pressing slopes. When the two clamping plates are put together, the two downward pressing slopes can be used to press down the sheet metal of the top cover of the printer, so as to facilitate pressing down the cylindrical grinding head in contact with the sheet metal of the top cover of the printer, so that the second transmission tooth groove of the cylindrical grinding head engages with the first transmission tooth groove on the outer wall of the corresponding transmission rod, and the cylindrical grinding head is driven by the rotating transmission rod and rotates synchronously, thereby realizing a fast grinding operation.

[0016] In a further embodiment, the bottom end surface of the splint is flush with the highest point of the top of the outer wall of each cylindrical grinding head, so that the sheet metal of the top cover of the printer can be pressed down by the two downward pressing inclined surfaces, and the cylindrical grinding head can be pressed down directly, avoiding the height difference, which causes the second transmission tooth groove of the cylindrical grinding head to be unable to engage with the corresponding first transmission tooth groove on the outer wall of the transmission rod, resulting in a lack of power connection.

[0017] In a further embodiment, the downward pressing slope is rotated through the ball-shaped groove and has a plurality of rolling balls embedded therein.

[0018] In a further embodiment, an arc-shaped handle is fixedly provided on the outer wall of one end of the clamping plate close to the threaded hole, and the arc-shaped handle is used to facilitate operation of the two clamping plates to adjust the clamping position on the rectangular support platform.

[0019] Preferably, a grinding method based on the above-mentioned printer top cover sheet metal grinding device includes the following steps:

[0020] A1. When grinding the sheet metal blanks on the top cover of the printer, directly place the sheet metal blanks of different sizes on a plurality of rows of cylindrical grinding heads. The sheet metal blanks are placed on the cylindrical grinding heads. The cylindrical grinding heads are pressed down by the gravity of the top cover sheet metal blanks. The cylindrical grinding heads can be pressed down by the connecting block. The T-shaped buffer groove of the L-shaped support rod can be slid downward along the outer wall of the T-shaped sliding rod. The second transmission tooth groove engages with each first transmission tooth groove. The transmission rod can drive the cylindrical grinding head to rotate and grind a single side of the sheet metal part.

[0021] A2. Use the elastic force of the spring to push the L-shaped support rod upward along the outer wall of the T-shaped sliding rod in real time, so that the cylindrical grinding head can be lifted up and separated from the transmission rod. In the absence of external force, the position of the cylindrical grinding head that is not pressed down by the gravity of the top cover sheet metal blank can remain unchanged. This avoids the transmission between the cylindrical grinding head that is not carrying the top cover sheet metal blank and the transmission rod, resulting in idling grinding and power waste.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention relates to a sheet metal grinding device for a printer top cover. When the sheet metal blanks for the printer top cover are ground, sheet metal blanks of different sizes are directly placed on a plurality of rows of columnar grinding heads, and at the same time, the clamping plates on both sides are moved toward the side close to the sheet metal blanks until the sheet metal blanks are clamped. This changes the grinding method of the existing blank grinding equipment in which the grinding range of the grinding head is fixed. During grinding, comprehensive grinding operations can be performed on sheet metals of different sizes, thereby improving the grinding efficiency of sheet metal parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is an exploded view of the main structure of the present invention;

[0025] Figure 2 Schematic diagram of the grinding table and L-shaped bracket structure of the present invention;

[0026] Figure 3 It is a schematic diagram of the local structure of the present invention;

[0027] Figure 4 It is an exploded view of the local structure of the present invention;

[0028] Figure 5 This is a side structural cross-sectional view of the grinding piece of the present invention;

[0029] Figure 6 For the present invention Figure 1 A magnified view of the structure at center A;

[0030] Figure 7 It is a schematic diagram of a single splint structure of the present invention.

[0031] In the figure: 1. Rectangular support platform; 11. Transmission rod; 12. Motor; 13. L-shaped bracket; 14. Inverted T-shaped slide; 15. Transmission groove; 16. First bevel gear; 17. Linkage rod; 18. Second bevel gear; 2. Grinding piece; 21. Cylindrical grinding head; 22. L-shaped support rod; 23. T-shaped sliding rod; 24. Spring; 25. Connecting block; 3. Clamping mechanism; 31. Clamping plate; 32. Inverted T-shaped slider; 33. Threaded adjustment rod; 34. Arc handle. DETAILED DESCRIPTION

[0032] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts are within the scope of protection of the present invention.

[0033] Example 1

[0034] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 6 The present embodiment provides a printer top cover sheet metal grinding device, including a grinding table and a grinding piece 2. The grinding table is a rectangular support table 1. The rectangular support table 1 is tilted and two L-shaped brackets 13 distributed left and right are fixed on the back of the rectangular support table 1. The two L-shaped brackets 13 are used to tilt and fix the rectangular support table 1. The rectangular support table 1 serves as a place for grinding the printer top cover sheet metal.

[0035] A placement slot is provided on the rectangular support platform 1, and the polishing piece 2 can be adjustably set inside the placement slot of the rectangular support platform 1. The top cover sheet metal of the printer to be polished is placed on the polishing piece 2. The polishing piece 2 can perform a comprehensive polishing operation on one side of the top cover sheet metal of the printer. After polishing one side, turn it over and polish the other side again until the polishing is completed.

[0036] A plurality of transmission rods 11 are rotatably provided on a side wall of one side of the rectangular support platform 1 . The transmission rods 11 rotate inside the rectangular support platform 1 and serve as transmission parts.

[0037] A transmission groove 15 is provided on the inner side wall of the rectangular support platform 1, and the end of the transmission rod 11 extends to one end close to the transmission groove 15. A motor 12 is fixedly provided on the outer wall of the rectangular support platform 1, and the power shaft of the motor 12 rotates and extends to the inside of the transmission groove 15 and is fixedly provided with a linkage rod 17. The outer wall of the linkage rod 17 is fixedly sleeved with several evenly spaced first bevel gears 16, and the end of the transmission rod 11 is fixedly connected to a second bevel gear 18 that meshes with the first bevel gear 16. The motor 12 provides power to drive the linkage rod 17 to rotate inside the transmission groove 15, and the first bevel gear 16 rotates synchronously with the rotating linkage rod 17. Each rotating first bevel gear 16 can drive the second bevel gear 18 at the end of the transmission rod 11 to rotate synchronously, so that each transmission rod 11 rotates synchronously in the same direction, and the rotating transmission rod 11 is used as a transmission member.

[0038] The grinding part 2 includes several cylindrical grinding heads 21, which are rotatably set at the upper end of the transmission rod 11. A first transmission tooth groove is provided on the outer wall of each transmission rod 11, and a second transmission tooth groove is provided on the outer wall of each cylindrical grinding head 21 that engages with the first transmission tooth groove. The second transmission tooth groove of each cylindrical grinding head 21 is engaged with the first transmission tooth groove on the outer wall of each corresponding transmission rod 11. The rotating transmission rod 11 can be driven by the engagement of the first transmission tooth groove with the second transmission tooth groove, thereby driving each cylindrical grinding head 21 to rotate synchronously.

[0039] The sheet metal blank of the printer top cover to be polished is placed on several cylindrical polishing heads 21. As long as the sheet metal blank of the printer top cover is positioned and does not change its position, the rotating cylindrical polishing head 21 can quickly polish one side of the sheet metal blank of the printer top cover whose position remains unchanged. After the single-side polishing is completed, the sheet metal blank of the printer top cover is turned over and the other side of the sheet metal blank of the printer top cover can be polished.

[0040] The grinding range of the grinding head of the existing blank grinding equipment is fixed. During grinding, the position of the sheet metal part needs to be constantly adjusted. Only when the surface of the sheet metal part passes through the grinding head can the comprehensive grinding operation be performed, which is time-consuming and labor-intensive and affects the grinding efficiency of the sheet metal part. By setting a sufficient number of cylindrical grinding heads 21, grinding operations can be performed on the sheet metal blanks of the top cover of printers of different sizes. As long as the number of cylindrical grinding heads 21 is sufficient, the surface to be ground of the sheet metal blanks of the top cover of printers of different sizes can be fully covered, thereby realizing comprehensive grinding operations.

[0041] Example 2

[0042] See also Figure 1-5 , further improvements were made on the basis of Example 1:

[0043] The rotation of each transmission rod 11 drives the corresponding cylindrical grinding head 21 to rotate, which can realize the grinding of sheet metal blanks of the top cover of the printer of different sizes. However, the above grinding method requires a large number of cylindrical grinding heads 21. Although it can meet the grinding needs of cylindrical grinding heads 21 of different sizes, it does not have the function of quickly adjusting the grinding range according to the size of the sheet metal blank to be ground. No matter how large the size of the sheet metal blank to be ground is, the grinding range remains unchanged. If the grinding operation is performed on a smaller sheet metal blank, the grinding power will be wasted, resulting in a higher grinding cost.

[0044] The two cylindrical grinding heads 21 are a group, and a connecting block 25 is rotatably connected between the two cylindrical grinding heads 21 of the same group. The two cylindrical grinding heads 21 are connected by a connecting block 25. The outer wall of the connecting block 25 is symmetrically provided with two L-shaped support rods 22, and the bottom end of each L-shaped support rod 22 is provided with a T-shaped buffer groove. A T-shaped sliding rod 23 is slidably inserted into the interior of each T-shaped buffer groove. The two T-shaped sliding rods 23 between the cylindrical grinding heads 21 of the same group are aligned with the corresponding transmission rod 11 as the center. The distribution is balanced, and the bottom end of the T-shaped sliding rod 23 is fixedly plugged into the bottom end surface of the placement groove. The T-shaped sliding rod 23 is fixed to the bottom end surface of the placement groove, and the T-shaped buffer groove of the L-shaped support rod 22 is slid downward along the outer wall of the T-shaped sliding rod 23, so that the connecting block 25 drives the two cylindrical grinding heads 21 at both ends to adjust toward one end close to the transmission rod 11, so that the second transmission tooth groove of each cylindrical grinding head 21 can be engaged with the first transmission tooth groove on the outer wall of each corresponding transmission rod 11 to realize power transmission.

[0045] When the sheet metal blanks on the top cover of the printer are to be polished, sheet metal blanks of different sizes are directly placed on several rows of cylindrical polishing heads 21. The sheet metal blanks are placed on the cylindrical polishing heads 21. The cylindrical polishing heads 21 are pressed down by the gravity of the sheet metal blanks on the top cover. The cylindrical polishing heads 21 can be pressed down and transmitted through the connecting block 25. The T-shaped buffer groove of the L-shaped support rod 22 can be slid downward along the outer wall of the T-shaped sliding rod 23. The second transmission tooth groove engages with each first transmission tooth groove. The transmission rod 11 can drive the cylindrical polishing head 21 to rotate to perform a single-sided polishing operation on the sheet metal.

[0046] The top end of the T-shaped sliding rod 23 is connected to a spring 24 located inside the T-shaped buffer groove. The elastic force of the spring 24 is used to push the L-shaped support rod 22 upward along the outer wall of the T-shaped sliding rod 23 in real time, so that the cylindrical grinding head 21 can be lifted up and separated from the transmission rod 11. In the absence of external force, the position of the cylindrical grinding head 21 that is not pressed down by the gravity of the top cover sheet metal blank can remain unchanged. This avoids the transmission between the cylindrical grinding head 21 that does not carry the top cover sheet metal blank and the transmission rod 11, resulting in idling grinding and power waste.

[0047] The invention changes the existing blank grinding equipment's grinding head's fixed grinding range grinding method. When grinding, it can realize the comprehensive grinding operation of sheet metals of different sizes, thereby improving the grinding efficiency of sheet metal parts.

[0048] The two adjacent groups of cylindrical grinding heads 21 that are close to each other are rotated and fitted together. According to the grinding requirements, several rows of parallel distributed and rotatably fitted groups of cylindrical grinding heads 21 are set up to be used for grinding the sheet metal of the top cover of the printer. The rotating cylindrical grinding heads 21 are used to perform a comprehensive grinding operation on the surface to be polished of the sheet metal of the top cover of the printer to maximize the grinding efficiency.

[0049] Example 3

[0050] See also Figure 1 、 Figure 2 ,and Figure 7 , further improvements were made on the basis of Example 2:

[0051] A clamping mechanism 3 with an adjustable clamping gap is provided at the upper end of the rectangular support platform 1. When the sheet metal blank on the top cover of the printer is to be polished, sheet metal blanks of different sizes are directly placed on several rows of cylindrical polishing heads 21. At the same time, the clamping gap of the clamping mechanism 3 is adjusted according to the size of the sheet metal blank on the top cover of the printer. The clamping gap of the device meets the requirements of clamping the sheet metal blank to be polished, thereby improving the stability during polishing.

[0052] The clamping mechanism 3 includes two clamping plates 31, which are distributed parallel to each other on the left and right, and an adjustable clamping gap is provided between the two clamping plates 31. Sheet metal blanks of different sizes are placed on several rows of cylindrical grinding heads 21, and the clamping plates 31 on both sides are moved toward the side close to the sheet metal blank until the sheet metal blank is clamped. The two clamping plates 31 are used to stably clamp the sheet metal blank to avoid up and down shaking during the grinding process.

[0053] In order to enhance the stability of the splint 31 when sliding to adjust the clamping position, an inverted T-shaped slide 14 is opened at the upper end of the rectangular support platform 1 and is located on the front and rear sides of the placement groove. The bottom end of the splint 31 is fixed with two inverted T-shaped sliders 32 that slide and engage with the interior of the front and rear inverted T-shaped slides 14 respectively. When the splint 31 adjusts the clamping position on the rectangular support platform 1, the inverted T-shaped sliders 32 are used to slide along the inside of the inverted T-shaped slide 14, which can not only ensure that the splint 31 can stably adjust the clamping position, but also prevent the splint 31 from detaching from the inverted T-shaped slide 14.

[0054] When the two clamps 31 clamp the sheet metal blank to be polished, in an unrestricted state, the inverted T-shaped sliders 32 at the bottom ends of the two clamps 31 will slide freely along the inverted T-shaped slide grooves 14, affecting the clamping stability of the sheet metal on the top cover of the printer. It is easy to shake during polishing, affecting the polishing accuracy. By opening threaded holes at one end of the two clamps 31, threaded adjustment rods 33 are rotatably inserted into the threaded holes of the two clamps 31. The threaded holes of the two clamps 31 rotate in opposite directions. By manually rotating the threaded adjustment rods 33, the two clamps 31 can be adjusted to the side closer to or farther away from each other.

[0055] According to the size of the printer top cover sheet metal to be polished, the clamping gap between the two clamping plates 31 is adjusted. It is only necessary to stably clamp the printer top cover sheet metal to avoid excessive deformation caused by excessive clamping force.

[0056] The two clamping plates 31 are arranged on the bottom of the opposite side walls of the two clamping plates 31, and the inner wall of the clamping notch is provided with a downward pressing inclined surface. After the sheet metal of the top cover of the printer to be polished is placed on the cylindrical polishing head 21, the two clamping plates 31 are brought together so that the sheet metal of the top cover of the printer is clamped between the downward pressing inclined surfaces of the two clamping plates 31. When the two clamping plates 31 are brought together, the two downward pressing inclined surfaces can be used to press the sheet metal of the top cover of the printer downward, so that the cylindrical polishing head 21 in contact with the sheet metal of the top cover of the printer is pressed downward, so that the second transmission tooth groove of the cylindrical polishing head 21 is engaged with the first transmission tooth groove of the outer wall of the corresponding transmission rod 11. The cylindrical polishing head 21 is driven by the rotating transmission rod 11 and rotates synchronously, thereby realizing a fast polishing operation.

[0057] At the same time, after the two clamps 31 stably clamp the top cover sheet metal of the printer, since a connecting block 25 is provided between the two cylindrical grinding heads 21 of the same group, some parts of the top cover sheet metal of the printer may not be polished. In order to avoid the above situation, the two clamps 31 drive the top cover sheet metal of the printer to swing back and forth slightly to avoid the phenomenon of incomplete polishing due to the existence of the connecting block 25.

[0058] An arc-shaped handle 34 is fixedly provided on the outer wall of one end of the clamping plate 31 close to the threaded hole. The arc-shaped handle 34 is used to facilitate operation of the two clamping plates 31 to adjust the clamping position on the rectangular support platform 1 .

[0059] At the same time, the bottom end surface of the splint 31 is flush with the highest point of the top of the outer wall of each cylindrical grinding head 21, so that the sheet metal of the top cover of the printer can be pressed down by the two downward pressing inclined surfaces, and the cylindrical grinding head 21 can be pressed down directly to avoid the height difference, which causes the second transmission tooth groove of the cylindrical grinding head 21 to be unable to engage with the corresponding first transmission tooth groove on the outer wall of the transmission rod 11, resulting in a phenomenon of power connection failure.

[0060] By rotating several balls embedded in the downward pressing inclined surface through the ball groove, the balls are rolled and fitted with the side walls of the printer's top cover sheet metal, reducing the frictional resistance of the printer's top cover sheet metal when it is pressed down by the downward pressing inclined surfaces on both sides.

[0061] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A printer top cover sheet metal grinding device, comprising a grinding table and a grinding piece (2), wherein the grinding table is a rectangular support table (1), the rectangular support table (1) is tilted and two L-shaped brackets (13) are fixedly provided on the back of the rectangular support table (1) and distributed left and right, and characterized in that: The rectangular support platform (1) is provided with a placement groove, and the polishing piece (2) can be adjusted and arranged inside the placement groove of the rectangular support platform (1); A plurality of transmission rods (11) are rotatably provided on a side wall of one inner side of the rectangular support platform (1), and a first transmission tooth groove is provided on the outer wall of each transmission rod (11); The polishing member (2) includes a plurality of cylindrical polishing heads (21), two cylindrical polishing heads (21) form a group, and a connecting block (25) is rotatably connected between the two cylindrical polishing heads (21) in the same group, and the outer wall of the connecting block (25) is symmetrically provided with two L-shaped support rods (22), and the bottom end of each L-shaped support rod (22) is provided with a T-shaped buffer groove, and the interior of each T-shaped buffer groove is slidably plugged with a T-shaped sliding rod (23), and the two T-shaped sliding rods (23) between the cylindrical polishing heads (21) in the same group are symmetrically distributed with the corresponding transmission rod (11) as the center, and the bottom end of the T-shaped sliding rod (23) is fixedly plugged with the bottom end surface of the placement groove, and the two cylindrical polishing heads (21) close to each other between the adjacent two groups of cylindrical polishing heads (21) are rotatably fitted together, and according to the polishing requirements, a plurality of rows of parallel distributed and rotatably fitted cylindrical polishing heads (21) are provided for polishing the top cover sheet metal of the printer; The outer wall of each cylindrical grinding head (21) is provided with a second transmission tooth groove engaged with the first transmission tooth groove; The top end of the T-shaped sliding rod (23) is connected to a spring (24) located inside the T-shaped buffer groove, and the elastic force of the spring (24) is used to push the L-shaped support rod (22) upward along the outer wall of the T-shaped sliding rod (23) in real time, so that the cylindrical grinding head (21) can be lifted up and separated from the transmission rod (11); A transmission groove (15) is formed on the inner side wall of the rectangular support platform (1), and the end of the transmission rod (11) extends to one end close to the transmission groove (15). A motor (12) is fixedly provided on the outer wall of the rectangular support platform (1). The power shaft of the motor (12) rotates and extends into the interior of the transmission groove (15) and is fixedly provided with a linkage rod (17). A plurality of evenly spaced first bevel gears (16) are fixedly sleeved on the outer wall of the linkage rod (17), and a second bevel gear (18) meshing with the first bevel gear (16) is fixedly connected to the end of the transmission rod (11); The upper end of the rectangular support platform (1) is provided with a clamping mechanism (3) capable of adjusting the size of the clamping gap; The clamping mechanism (3) comprises two clamping plates (31), the two clamping plates (31) are parallelly distributed on the left and right, and an adjustable clamping gap is provided between the two clamping plates (31); The bottom end surface of the clamping plate (31) is flush with the highest point of the top end of the outer wall of each cylindrical grinding head (21); The bottoms of the opposite side walls of the two clamping plates (31) are each provided with a clamping notch, and the inner wall of the clamping notch is provided with a downward pressing inclined surface.

2. The printer top cover sheet metal grinding device according to claim 1, characterized in that: The upper end of the rectangular support platform (1) is provided with an inverted T-shaped slide groove (14) located at the front and rear sides of the placement groove, and the bottom end of the clamping plate (31) is fixed with two inverted T-shaped sliders (32) that are respectively slidably engaged with the interior of the front and rear inverted T-shaped slide grooves (14).

3. The printer top cover sheet metal grinding device according to claim 2, characterized in that: One end of each of the two clamping plates (31) is provided with a threaded hole, and a threaded adjustment rod (33) is rotatably inserted into the threaded holes of the two clamping plates (31).

4. The printer top cover sheet metal grinding device according to claim 1, characterized in that: The downward pressing inclined surface is rotated through the ball-shaped groove and has a plurality of rolling balls embedded therein.

5. The printer top cover sheet metal grinding device according to claim 3, characterized in that: An arc-shaped handle (34) is fixedly provided on the outer wall of one end of the clamping plate (31) close to the threaded hole.

6. A method for polishing a sheet metal polishing device for a printer top cover, using the sheet metal polishing device for a printer top cover according to claim 1, characterized in that: The steps include: A1. When the sheet metal blank of the top cover of the printer is to be polished, sheet metal blanks of different sizes are directly placed on a plurality of rows of cylindrical polishing heads (21). The sheet metal blank is placed on the cylindrical polishing head (21). The cylindrical polishing head (21) is pressed down by the gravity of the sheet metal blank of the top cover, and the cylindrical polishing head (21) can be pressed down. The T-shaped buffer groove of the L-shaped support rod (22) can be slid downward along the outer wall of the T-shaped sliding rod (23) through the connecting block (25). The second transmission tooth groove is engaged with each first transmission tooth groove. The transmission rod (11) can drive the cylindrical polishing head (21) to rotate, and perform a polishing operation on a single side of the sheet metal. A2. By utilizing the elastic force of the spring (24), the L-shaped support rod (22) is lifted up along the outer wall of the T-shaped sliding rod (23) in real time, the cylindrical grinding head (21) can be lifted up and separated from the transmission rod (11). In the absence of external force, the position of the cylindrical grinding head (21) that is not pressed down by the gravity of the top cover sheet metal blank can remain unchanged. This avoids the transmission between the cylindrical grinding head (21) that does not carry the top cover sheet metal blank and the transmission rod (11), resulting in idling grinding and power waste.

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