Metal shell surface polishing device for tablet computer production

Abstract

The invention discloses a metal shell surface polishing device for tablet personal computer production, and particularly relates to the technical field of devices for tablet personal computer production, the metal shell surface polishing device for tablet personal computer production comprises a base, clamping guide structures are arranged at the upper end of the base in a bilateral symmetry mode, and circulating driving structures located in an inner cavity of the base are arranged on the sides, close to each other, of the two clamping guide structures; a polishing structure is arranged on the rear portion of the upper end of the base. According to the metal shell surface polishing device for tablet personal computer production, a metal shell is clamped and fixed under the action of the clamping guide structure, oil stains and metal scraps on the surface of the metal shell are cleaned through the cleaning brush, the impurities are prevented from remaining on the surface of the metal shell, and the surface polishing effect is improved. And meanwhile, by means of cooperation of the circulation driving structure and the clamping guiding structure, the metal shell is overturned after one face is polished, the other face of the metal shell is polished in the reset process, automatic overturning and polishing are achieved, and the machining efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of devices for tablet computer production, and in particular to a metal shell surface polishing device for tablet computer production. Background Art

[0002] With the rapid development of the electronic equipment market, consumers have higher and higher requirements for the appearance design and manufacturing process of electronic products. Especially for portable devices such as tablet computers, the surface quality of the metal shell directly affects the appearance texture and user experience of the product. Therefore, the surface polishing process of the metal shell occupies an important position in the production of tablet computers.

[0003] Chinese patent announcement number CN209811992U discloses a metal shell surface polishing device for tablet computer production, including a left adjustment plate, a right adjustment plate, a left clamping plate, a right clamping plate, multiple groups of left plug-in columns, multiple groups of right plug-in columns, a left fixed plate, a right fixed plate, a left threaded tube, a right threaded tube, a left threaded rod, a right threaded rod and an adjustment shaft; it also includes a left support plate, a right support plate, a top plate, four groups of adjustment screws, four groups of upper connecting springs, four groups of adjustment nuts, a lifting plate, a left mounting plate, a right mounting plate, a wool roller and a base.

[0004] However, in actual use, the device still needs to be placed and polished manually, and its efficiency depends on the efficiency of manual operation, making it difficult to achieve continuous automatic processing;

[0005] Moreover, the device cannot realize flipping over the tablet computer shell, and cannot perform polishing on the inner wall, requiring manual flipping for secondary polishing. The complicated operation process leads to relatively low efficiency. Summary of the invention

[0006] The main purpose of the present invention is to provide a metal shell surface polishing device for tablet computer production, which can effectively solve the problem that the existing device cannot realize automatic flipping and continuous polishing, resulting in complicated operation process and affecting processing efficiency.

[0007] To achieve the above object, the technical solution adopted by the present invention is:

[0008] A metal shell surface polishing device for tablet computer production includes a base, a clamping guide structure is symmetrically arranged on the upper end of the base, a circulating drive structure located in the inner cavity of the base is arranged on the side where the two clamping guide structures are close to each other, a cleaning structure is arranged in the middle of the upper end of the base, and a polishing structure is arranged at the rear of the upper end of the base.

[0009] Preferably, the cleaning structure includes a mounting groove opened in the middle of the upper end of the base and a sliding frame symmetrically distributed on the left and right and fixedly connected to the upper end of the base, the left and right sides of the mounting groove are slidably connected to the inner surfaces of the two sliding frames with sliding blocks 2, the lower ends of the four sliding blocks 2 are fixedly connected to return springs, the lower ends of the two return springs located at the upper part are fixedly connected to the upper end of the base, the lower ends of the two return springs located at the lower part are fixedly connected to the bottom wall of the inner cavity of the mounting groove, and the inner surfaces of the two sliding blocks 2 in the same group are connected to a cleaning brush that rotates together.

[0010] Preferably, the polishing structure includes a gearbox fixedly connected to the left upper end of the base, the gearbox input end is fixedly connected to a drive motor, one of the output ends of the gearbox is fixedly connected to a polishing roller brush, the outer surfaces of the connecting shafts at the left and right ends of the polishing roller brush are rotatably connected to brackets fixedly connected to the upper end of the base, and the output end of the gearbox located on the right is transmission-connected to the circulating drive structure.

[0011] Preferably, the clamping and guiding structure includes a guiding assembly fixedly connected to the upper end of the base, a clamping and fixing assembly is provided on the inner surface of the guiding assembly, a Z-shaped guiding groove slidably connected to the clamping and fixing assembly is provided at a position on the upper end of the base located on one side of the clamping and fixing assembly, and an auxiliary assembly is provided at the rear of the guiding assembly close to one side of the clamping and fixing assembly.

[0012] Preferably, the guiding assembly comprises a P-shaped block, a straight groove slidably connected to the clamping and fixing assembly is provided on one side of the P-shaped block close to the clamping and fixing assembly, a fan-shaped groove is provided at the tail end of the straight groove, and the fan-shaped groove starts from the tail end of the straight groove and then returns to the upper part of the tail end of the straight groove along a fan-shaped trajectory and is connected with the straight groove.

[0013] Preferably, the clamping and fixing assembly includes rollers symmetrically distributed frontally and rearwardly, the ends of the two rollers away from the P-shaped block are fixedly connected to a connecting rod, the outer surfaces of the two connecting rods are slidably connected to L-shaped blocks, and two compression springs fixedly connected to the connecting rod are arranged in the groove connecting the L-shaped block and the connecting rod, the L-shaped block is L-shaped and its vertical and horizontal opposite sides are fixedly connected to sliding rods, and the outer surface of the sliding rod is fixedly connected to a rubber contact block slidably connected to the outer surface of the sliding rod through a compression spring.

[0014] Preferably, the clamping and fixing assembly also includes a piston rod sleeved on the outer surfaces of the two connecting rods, the inner surfaces of the two piston rods are rotatably connected to the outer surfaces of the connecting rods, the sides of the two piston rod outer surfaces close to each other are slidably connected to a spring rod, and the two L-shaped blocks are symmetrically fixedly connected up and down with a limit rod that is adapted to the width of the Z-shaped guide groove.

[0015] Preferably, the auxiliary component includes a support rod fixedly connected to the rear end of the vertical part of the P-shaped block, and the support rod is fixedly connected to an elastic shaft on one side close to the clamping and fixing component, and the outer surface of the elastic shaft is fixedly connected to an arc block 2, and the arc surface portion of the arc block 2 is tangent to the vertical trajectory of the fan-shaped groove.

[0016] Preferably, the circulating drive structure includes a straight slide groove opened in the upper part of the base between the Z-shaped guide groove and the guide assembly, the inner surface of the straight slide groove is slidably connected to a driven assembly, the driven assembly is fixedly connected to a chain belt on the side away from the guide assembly, the inner surface of the chain belt is symmetrically meshed with sprockets driving the chain belt, the two sprockets located at the front are commonly fixedly connected to a driving shaft, the driving shaft is connected to one of the output ends of the gearbox through a belt drive, an arc-shaped limiting groove is opened at the front of one side of the P-shaped block close to the straight slide groove, and the inner surface of the arc-shaped limiting groove is slidably connected to a toggle plate rotatably connected to the P-shaped block through a torsion spring shaft.

[0017] Preferably, the driven component includes a slider 1 that is slidably connected to the inner surface of the straight slide groove, a slider 1 is provided at the upper end, a slide groove 1 is slidably connected to the inner surface of the slide groove 1 with an arc block 1, a lower end of the arc block is fixedly connected to the bottom wall of the inner cavity of the slide groove 1 with a compression spring 1, a slider 1 is provided at one end close to the chain belt, a toggle rod fixedly connected to the adjacent side wall of the chain belt on the inner surface of the slide groove 2 is slidably connected, and the height of the slide groove 2 is greater than the height of the chain belt.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention utilizes the clamping and guiding structure to clamp and fix the metal shell, and drives the metal shell clamped by the clamping and guiding structure to move backward on the upper part of the base through the action of the circulating driving structure. In this process, the oil stains and metal debris on the surface of the metal shell are cleaned by a cleaning brush to prevent these impurities from remaining on the surface of the metal shell and reduce the influence of impurities on the polishing effect. At the same time, the cooperation of the circulating driving structure and the clamping and guiding structure is utilized to flip the metal shell after polishing one side, and polish the other side during the resetting process, thereby realizing automatic flipping and polishing, reducing the operation process of the operators during the polishing process, and improving the processing efficiency.

[0020] 2. The present invention clamps and fixes the metal shell of the tablet computer through the cooperation of the clamping and fixing component and the Z-shaped guide groove under the action of the circulating drive structure. At the same time, after polishing one side, the fan-shaped groove and the clamping and fixing component are cooperated, and the clamping and fixing component is turned over by the auxiliary component to expose the other side to the action range of the polishing structure, and is polished twice. There is no need to manually turn over the metal shell, which reduces the operating steps of the polishing process and improves production efficiency.

[0021] 3. The present invention utilizes the cooperation between the Z-shaped guide groove and the limit rod to loosen the polished metal shell surface when returning to the initial position, without the need to manually release the fixation of the metal shell surface, thereby simplifying the operation process and operation steps, and thus improving the operating efficiency of the operator.

[0022] 4. The present invention drives the chain belt to move in the toggle plate through the cooperation of the sprocket, the drive shaft and the gearbox, thereby utilizing the cooperation of the chain belt and the toggle rod to drive the toggle rod to slide back and forth in the toggle plate, thereby driving the clamping and fixing assembly to slide in the guide assembly through the action of the arc block 1 and the connecting rod, and cooperating with the action of the toggle plate and the arc-shaped limit groove so that the arc block 1 and the connecting rod are automatically separated after completing a round of polishing operation, thereby restoring each component to its initial position without the need for operator intervention to reset, thereby achieving continuous polishing operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a structural schematic diagram of the polishing structure of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the cleaning structure of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the clamping and guiding structure of the present invention;

[0027] Figure 5 It is a schematic diagram of the trajectory of the Z-shaped guide groove of the present invention;

[0028] Figure 6 A schematic diagram of the trajectory distribution of the guide assembly of the present invention;

[0029] Figure 7 It is a schematic diagram of the connection relationship between the guide assembly and the clamping and fixing assembly of the present invention;

[0030] Figure 8 It is a structural schematic diagram of the clamping and fixing assembly of the present invention;

[0031] Fig. 9 It is a schematic diagram of the positional relationship between the clamping and fixing assembly and the circulating driving structure of the present invention;

[0032] Fig.10 For the present invention Figure 4 A is an enlarged schematic diagram of the local structure at center A;

[0033] Fig.11 It is a schematic diagram of the explosion effect of the driven component of the present invention.

[0034] In the figure: 1, base; 2, circulating drive structure; 21, straight slide; 22, toggle plate; 23, chain belt; 24, arc limit groove; 25, driven assembly; 251, slider 1; 252, slide 1; 253, arc block 1; 254, compression spring 1; 255, toggle rod; 256, slide 2; 26, sprocket; 261, drive shaft; 3, clamping guide structure; 31, guide assembly; 311, P-shaped block; 312, straight groove; 313, fan-shaped groove; 32, clamping and fixing assembly; 321, roller; 322, L-shaped Block; 323, spring rod; 324, piston rod; 325, compression spring 2; 326, rubber contact block; 327, slide rod; 328, limit rod; 329, connecting rod; 33, Z-shaped guide groove; 34, auxiliary component; 341, support rod; 342, elastic shaft; 343, arc surface block 2; 4, cleaning structure; 41, sliding frame; 42, cleaning brush; 43, slider 2; 44, reset spring; 45, mounting groove; 5, polishing structure; 51, bracket; 52, polishing roller brush; 53, gearbox; 54, drive motor. DETAILED DESCRIPTION

[0035] 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.

[0036] Embodiment 1, as Figure 1 As shown, a metal shell surface polishing device for tablet computer production includes a base 1, a clamping guide structure 3 is symmetrically arranged on the upper end of the base 1, a circulating driving structure 2 located in the inner cavity of the base 1 is arranged on the side where the two clamping guide structures 3 are close to each other, a cleaning structure 4 is arranged in the middle of the upper end of the base 1, and a polishing structure 5 is arranged at the rear of the upper end of the base 1.

[0037] Specifically, to clean the surface of the metal casing, refer to Figure 2 and Figure 3 The cleaning structure 4 includes a mounting groove 45 opened in the middle of the upper end of the base 1 and a sliding frame 41 symmetrically distributed and fixedly connected to the upper end of the base 1. Sliding blocks 43 are slidably connected to the inner surfaces of the two sliding frames 41 on the left and right sides of the mounting groove 45. The lower ends of the four sliding blocks 43 are fixedly connected to return springs 44. The lower ends of the two return springs 44 located at the upper part are fixedly connected to the upper end of the base 1. The lower ends of the two return springs 44 located at the lower part are fixedly connected to the bottom wall of the inner cavity of the mounting groove 45. The inner surfaces of the two sliding blocks 43 in the same group are connected to a cleaning brush 42 for common rotation.

[0038] When the tablet computer metal shell passes through the cleaning brush 42, under the action of the return spring 44, the cleaning brushes 42 on both sides separate from each other but always stick to the surface of the metal shell, and the cleaning brushes 42 are driven to rotate by the friction force;

[0039] Since the metal shell needs to be cut and polished during the pre-processing process, its surface will inevitably be contaminated with dust, metal debris or grease. These dirty impurities will affect the polishing effect during the wool roller polishing process and may even scratch the surface of the metal shell, so the surface of the metal shell needs to be cleaned.

[0040] When the metal shell drives the cleaning brush 42 to rotate under the action of friction, the cleaning brush 42 will clean the oil stains and metal debris on the surface of the metal shell to prevent these dirt and impurities from affecting the polishing effect or causing scratches on the surface of the metal shell.

[0041] Specifically, to achieve the grinding of the metal shell surface, refer to Figure 2 and Figure 3 The polishing structure 5 includes a gearbox 53 fixedly connected to the left upper end of the base 1, the input end of the gearbox 53 is fixedly connected to a drive motor 54, one of the output ends of the gearbox 53 is fixedly connected to a polishing roller brush 52, and the outer surfaces of the connecting shafts at the left and right ends of the polishing roller brush 52 are rotatably connected to a bracket 51 fixedly connected to the upper end of the base 1, and the output end of the gearbox 53 on the right is transmission-connected to the circulating drive structure 2.

[0042] Under the action of the driving motor 54 and the gearbox 53, the polishing roller brush 52 is driven to rotate at a high speed, and the wool brush on the polishing roller brush 52 can polish the surface of the metal shell under high-speed friction.

[0043] It should be noted that the gearbox 53 is a conventional speed changing device, which can convert the rotation speed of the power input by the drive motor 54 to adapt to the speed requirements of different modules. This structure has been widely used in the prior art. In the present invention, it is only used to realize the speed changing function, and its internal structure, operating principle, wiring, and control method will not be described in detail.

[0044] The polishing roller brush 52 adopts a wool roller, which is a multifunctional polishing tool suitable for surface treatment of various materials. At the same time, the natural fiber of the wool roller is very soft, the polishing form is relatively gentle, and polishing can be performed without damaging the surface of the material. The wool roller can be reused and the price is relatively low.

[0045] During the operation of this embodiment, the clamping and guiding structure 3 is utilized to clamp and fix the metal shell, and the circulating driving structure 2 is utilized to drive the metal shell clamped by the clamping and guiding structure 3 to move backward on the upper part of the base 1. During this process, the cleaning brush 42 is used to clean the oil stains and metal debris on the surface of the metal shell to prevent these impurities from remaining on the surface of the metal shell and reduce the influence of impurities on the polishing effect. At the same time, the circulating driving structure 2 and the clamping and guiding structure 3 are used to cooperate to flip the metal shell after polishing one side, and polish the other side during the resetting process, thereby realizing automatic flipping and polishing, reducing the operating procedures of the operator during the polishing process, and improving the processing efficiency.

[0046] Embodiment 2: Based on Embodiment 1, this embodiment clamps and fixes the metal shell of the tablet computer through the cooperation between the clamping and fixing component 32 and the Z-shaped guide groove 33 under the action of the circulating drive structure 2. At the same time, after polishing one side, the clamping and fixing component 32 is turned over by the auxiliary component 34 to expose the other side within the action range of the polishing structure 5, and the metal shell is polished twice. There is no need to manually turn over the metal shell, which reduces the operation steps of the polishing process and improves production efficiency.

[0047] Synchronously, by using the cooperation between the Z-shaped guide groove 33 and the limit rod 328, the polished metal shell surface can be loosened when returning to the initial position, without the need to manually release the fixation of the metal shell surface, thereby simplifying the operation process and operating steps, and thus improving the operating efficiency of the operator.

[0048] Specifically, in order to achieve the movement of the metal shell surface on the device, refer to Figure 4 and Figure 5 The clamping guide structure 3 includes a guide component 31 fixedly connected to the upper end of the base 1, a clamping and fixing component 32 is arranged on the inner surface of the guide component 31, a Z-shaped guide groove 33 slidably connected to the clamping and fixing component 32 is opened at a position on the upper end of the base 1 located on one side of the clamping and fixing component 32, and an auxiliary component 34 is arranged at the rear of the guide component 31 close to the clamping and fixing component 32.

[0049] The guide assembly 31 is used to guide the running path of the clamping and fixing assembly 32. At the same time, the Z-shaped guide groove 33 cooperates with the clamping and fixing assembly 32 to realize automatic clamping and loosening of the metal shell at the initial position, reducing the operating process of the operator on the metal shell.

[0050] Further, to guide the flat housing to move along a predetermined trajectory, refer to Figure 6The guide component 31 includes a P-shaped block 311. A straight groove 312 is provided on one side of the P-shaped block 311 close to the clamping and fixing component 32 and is slidably connected to the clamping and fixing component 32. A fan-shaped groove 313 is provided at the tail end of the straight groove 312. The fan-shaped groove 313 starts from the tail end of the straight groove 312 and then returns to the upper part of the tail end of the straight groove 312 along a fan-shaped trajectory and is connected with it.

[0051] The straight groove 312 formed in the front of the P-shaped block 311 is a straight track, which enables the clamping and fixing assembly 32 to move backward smoothly during operation;

[0052] The fan-shaped groove 313 is a fan-shaped track connected end to end, and its radius is the same as the length of the clamping and fixing component 32, and the connection parts of its various sections are all smooth tracks. When the clamping and fixing component 32 moves from a horizontal track to a vertical track, it will enter the vertical part upward along the smooth track, and enter the arc track at the highest point under the action of the auxiliary component 34, and move forward and downward along the arc track of the fan-shaped groove 313 until it returns to a horizontal state. At this time, the metal flat shell is flipped upside down.

[0053] Further, to hold the flat panel housing on the device for movement, see Figure 7 and Figure 8 The clamping and fixing assembly 32 includes rollers 321 symmetrically distributed frontward and rearward, and the ends of the two rollers 321 away from the P-shaped block 311 are fixedly connected to a connecting rod 329, and the outer surfaces of the two connecting rods 329 are slidably connected to L-shaped blocks 322, and a compression spring 325 fixedly connected to the connecting rod 329 is arranged in the groove connecting the L-shaped block 322 and the connecting rod 329. The L-shaped block 322 is L-shaped and its vertical and horizontal opposite sides are fixedly connected to a sliding rod 327, and the outer surfaces of the sliding rod 327 are fixedly connected to a rubber contact block 326 slidably connected to the outer surface of the sliding rod 327 through a compression spring, and the two L-shaped blocks 322 are symmetrically fixedly connected to limit rods 328 adapted to the width of the Z-shaped guide groove 33.

[0054] There are two clamping and fixing components 32, which are divided into left and right groups, and are clamped on the four corners on both sides of the metal flat shell. When the operator pushes the flat metal shell inward, the rear rubber contact block 326 and the L-shaped block 322 are driven by the force to drive the front L-shaped block 322 to move backward along the Z-shaped guide groove 33 until there is no left and right position difference between the front and rear L-shaped blocks 322. At this time, the rubber contact block 326 fits with the surface of the metal shell and cooperates with the rear L-shaped block 322 and the rubber contact block 326 to clamp and fix it.

[0055] When the limiting rod 328 is in the track of the Z-shaped guide groove 33, it will be affected by the track of the Z-shaped guide groove 33, such as Figure 5 and Figure 7As shown, there is a partial spacing between the front and rear of the Z-shaped guide groove 33. When the front limiting rod 328 is at the front of the Z-shaped guide groove 33, the two L-shaped blocks 322 are staggered in left and right positions. At this time, the front connecting rod 329 slides into the inner cavity of the L-shaped block 322 and the compression spring 2 325 is compressed. At this time, the front rubber contact block 326 is separated from the surface of the metal shell and no longer clamps the surface of the metal shell.

[0056] Further, in order to cooperate with the straight groove 312 and the fan-shaped groove 313 to drive the flat housing to flip, refer to Figure 8 The clamping and fixing assembly 32 also includes a piston rod 324 sleeved on the outer surfaces of the two connecting rods 329, the inner surfaces of the two piston rods 324 are rotatably connected to the outer surfaces of the connecting rods 329, and the sides of the outer surfaces of the two piston rods 324 that are close to each other are slidably connected with a spring rod 323.

[0057] The piston rods 324 are respectively sleeved on the outer surfaces of the two connecting rods 329 on the same side and are rotatably connected to the connecting rods 329. At the same time, a spring rod 323 is provided between the two piston rods 324 on the same side to buffer and pull the piston rods 324 on both sides to move closer to each other, so that the connecting rods 329 on both sides are driven to move closer to each other through the piston rods 324, thereby clamping the metal shell between the two L-shaped blocks 322.

[0058] At the same time, when the rollers 321 are within the trajectory of the fan-shaped groove 313 , the two rollers 321 can adapt to the trajectory changes of the fan-shaped groove 313 by rotating the piston rod 324 and the connecting rod 329 .

[0059] Further, in order to assist the clamping and fixing assembly 32 in driving the housing to flip, see Figure 6 The auxiliary component 34 includes a support rod 341 fixedly connected to the rear end of the vertical part of the P-shaped block 311, and a flexible shaft 342 is fixedly connected to the side of the support rod 341 close to the clamping and fixing component 32. The outer surface of the flexible shaft 342 is fixedly connected to an arc block 343, and the arc surface part of the arc block 343 is tangent to the vertical trajectory of the fan-shaped groove 313.

[0060] When the roller 321 is in the vertical track of the fan-shaped groove 313 and continues to move upward, it will first contact the arc block 343 and move upward against the arc block 343. At this time, the arc block 343 flips upward under the action of the elastic shaft 342 until the roller 321 passes through the vertical part and is about to enter the arc part. At this time, the arc block 343 pushes the roller 321 forward under the action of the elastic shaft 342 to assist it in entering the arc part of the fan-shaped groove 313.

[0061] Embodiment 3: Based on embodiment 2, this embodiment further drives the chain belt 23 to move in the toggle plate 22 through the cooperation of the sprocket 26, the drive shaft 261 and the gearbox 53, thereby utilizing the cooperation of the chain belt 23 and the toggle rod 255 to drive the toggle rod 255 to slide back and forth in the toggle plate 22, thereby driving the clamping and fixing assembly 32 to slide in the guide assembly 31 through the action of the arc block 1 253 and the connecting rod 329, and cooperating with the action of the toggle plate 22 and the arc-shaped limit groove 24, the arc block 1 253 and the connecting rod 329 are automatically disengaged after completing a round of polishing operation, thereby restoring each component to its initial position without the need for operator intervention and reset, thereby achieving continuous polishing operation.

[0062] Specifically, in order to realize the circular movement of the clamping and fixing assembly 32 in the guide assembly 31, refer to Fig. 9 , Fig.10 and Fig.11 The circulating driving structure 2 includes a straight slide groove 21 opened at the upper end of the base 1 between the Z-shaped guide groove 33 and the guide component 31, and a driven component 25 is slidably connected to the inner surface of the straight slide groove 21. The driven component 25 is fixedly connected to the chain belt 23 on the side away from the guide component 31. The inner surface of the chain belt 23 is symmetrically meshed with sprockets 26 for driving the chain belt 23. The two sprockets 26 located at the front are commonly fixedly connected to a driving shaft 261, and the driving shaft 261 is connected to one of the output ends of the gearbox 53 through a belt drive. An arc-shaped limiting groove 24 is opened at the front of one side of the P-shaped block 311 close to the straight slide groove 21, and a toggle plate 22 rotatably connected to the P-shaped block 311 through a torsion spring shaft is slidably connected to the inner surface of the arc-shaped limiting groove 24.

[0063] Under the action of the gearbox 53 , the drive shaft 261 drives the sprocket 26 to rotate, thereby driving the chain belt 23 to move in a circular motion, and driving the clamping and fixing assembly 32 to move in the guide assembly 31 under the cooperation of the chain belt 23 and the driven assembly 25 .

[0064] Further, in order to realize the movement and automatic reset of the clamping and fixing assembly 32, refer to Fig.11 The driven component 25 includes a slider 251 that is slidably connected to the inner surface of the straight slide 21, a slide 252 is provided at the upper end of the slider 251, an arc block 253 is slidably connected to the inner surface of the slide 252, a compression spring 254 is fixedly connected to the lower end of the arc block 253 and the bottom wall of the inner cavity of the slide 252, a slide 256 is provided at one end of the slider 251 close to the chain belt 23, a toggle rod 255 that is fixedly connected to the adjacent side wall of the chain belt 23 is slidably connected to the inner surface of the slide 256, and the height of the slide 256 is greater than the height of the chain belt 23.

[0065] First, the chain belt 23 moves and drives the toggle rod 255 to move. At this time, the slider 1 251 will synchronously follow the moving track of the toggle rod 255 and slide in the toggle plate 22 under the cooperation of the toggle rod 255 and the second slide groove 256, until the rear end of the arc block 1 253 is released from the connecting rod 329, and the connecting rod 329 is pushed to drive the roller 321 to slide in the guide assembly 31;

[0066] When the arc block 1 253 pushes the roller 321 to cross the track of the fan-shaped groove 313 and drives the metal shell to flip, the toggle rod 255 flips to the bottom under the action of the chain belt 23, and pushes the slider 1 251 to move forward from the bottom. At this time, the front end of the arc block 1 253 continues to push the connecting rod 329 to make the roller 321 move forward in the guide assembly 31, thereby driving the flipped metal shell to polish the reverse side;

[0067] When the arc block 1 253 pushes the connecting rod 329 to move forward and pass the toggle plate 22, since the toggle plate 22 is restricted by the arc limit groove 24 and cannot flip forward, it will press the arc block 1 253 downward to make it slide downward along the slide groove 1 252. At this time, since the L-shaped block 322 cannot continue to move under the restriction of the Z-shaped guide groove 33, the arc block 1 253 will eventually be pressed until it is lower than the connecting rod 329 and then cross the connecting rod 329 to return to the front of the connecting rod 329, realizing automatic reset.

[0068] The above shows and describes the basic principles and main features of the present invention and the 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 to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A surface polishing device for a metal shell used in tablet computer production, comprising a base (1), characterized in that: The upper end of the base (1) is symmetrically provided with clamping guide structures (3), and the sides of the two clamping guide structures (3) close to each other are provided with a circulating drive structure (2) located in the inner cavity of the base (1). The middle part of the upper end of the base (1) is provided with a cleaning structure (4), and the rear part of the upper end of the base (1) is provided with a polishing structure (5).

2. The surface polishing device for a metal shell used in tablet computer production according to claim 1, characterized in that: The cleaning structure (4) comprises a mounting groove (45) provided in the middle of the upper end of the base (1) and a sliding frame (41) symmetrically distributed on the left and right and fixedly connected to the upper end of the base (1); the left and right sides of the mounting groove (45) are slidably connected to the inner surfaces of the two sliding frames (41); the lower ends of the four sliding frames (43) are fixedly connected to return springs (44); the lower ends of the two return springs (44) located at the upper part are fixedly connected to the upper end of the base (1); the lower ends of the two return springs (44) located at the lower part are fixedly connected to the bottom wall of the inner cavity of the mounting groove (45); and the inner surfaces of the two sliding frames (43) in the same group are rotatably connected to a cleaning brush (42).

3. The surface polishing device for a metal shell used in tablet computer production according to claim 1, characterized in that: The polishing structure (5) comprises a gearbox (53) fixedly connected to the left upper end of the base (1); an input end of the gearbox (53) is fixedly connected to a driving motor (54); one output end of the gearbox (53) is fixedly connected to a polishing roller brush (52); the outer surfaces of the connecting shafts at the left and right ends of the polishing roller brush (52) are both rotatably connected to brackets (51) fixedly connected to the upper end of the base (1); and the output end of the gearbox (53) located at the right part is drivingly connected to the circulating drive structure (2).

4. The surface polishing device for a metal shell used in tablet computer production according to claim 3, characterized in that: The clamping guide structure (3) comprises a guide component (31) fixedly connected to the upper end of the base (1); a clamping and fixing component (32) is arranged on the inner surface of the guide component (31); a Z-shaped guide groove (33) slidably connected to the clamping and fixing component (32) is provided at a position on the upper end of the base (1) located on one side of the clamping and fixing component (32); and an auxiliary component (34) is arranged at the rear of the guide component (31) close to the clamping and fixing component (32).

5. The surface polishing device for a metal shell used in tablet computer production according to claim 4, characterized in that: The guide assembly (31) comprises a P-shaped block (311), a straight groove (312) slidably connected to the clamping and fixing assembly (32) is provided on one side of the P-shaped block (311) close to the clamping and fixing assembly (32), a fan-shaped groove (313) is provided at the tail end of the straight groove (312), and the fan-shaped groove (313) starts from the tail end of the straight groove (312) and then returns to the upper part of the tail end of the straight groove (312) along a fan-shaped trajectory and is connected with the tail end of the straight groove (312).

6. The surface polishing device for a metal shell used in tablet computer production according to claim 5, characterized in that: The clamping and fixing assembly (32) includes rollers (321) symmetrically distributed frontward and rearward, and the ends of the two rollers (321) away from the P-shaped block (311) are fixedly connected to a connecting rod (329), and the outer surfaces of the two connecting rods (329) are slidably connected to L-shaped blocks (322), and a compression spring (325) fixedly connected to the connecting rod (329) is arranged in the groove connecting the L-shaped block (322) and the connecting rod (329), and the L-shaped block (322) is L-shaped and its vertical and horizontal opposite sides are fixedly connected to a sliding rod (327), and the outer surface of the sliding rod (327) is fixedly connected to a rubber contact block (326) slidably connected to the outer surface of the sliding rod (327) through a compression spring.

7. The surface polishing device for a metal shell used in tablet computer production according to claim 6, characterized in that: The clamping and fixing assembly (32) also includes a piston rod (324) sleeved on the outer surfaces of the two connecting rods (329), the inner surfaces of the two piston rods (324) are rotatably connected to the outer surfaces of the connecting rods (329), the outer surfaces of the two piston rods (324) are close to each other on one side and are slidably connected to a spring rod (323), and the two L-shaped blocks (322) are symmetrically fixedly connected to limit rods (328) that are compatible with the width of the Z-shaped guide groove (33) in the upper and lower directions.

8. The surface polishing device for a metal shell used in tablet computer production according to claim 5, characterized in that: The auxiliary component (34) comprises a support rod (341) fixedly connected to the rear end of the vertical part of the P-shaped block (311); a side of the support rod (341) close to the clamping and fixing component (32) is fixedly connected to an elastic shaft (342); an outer surface of the elastic shaft (342) is fixedly connected to an arc surface block 2 (343); and an arc surface portion of the arc surface block 2 (343) is tangent to the vertical track of the fan-shaped groove (313).

9. The surface polishing device for a metal shell used in tablet computer production according to claim 5, characterized in that: The circulating drive structure (2) comprises a straight slide groove (21) provided at the upper end of the base (1) between the Z-shaped guide groove (33) and the guide assembly (31); a driven assembly (25) is slidably connected to the inner surface of the straight slide groove (21); a side of the driven assembly (25) away from the guide assembly (31) is fixedly connected to the chain belt (23); a sprocket (26) for driving the chain belt (23) is symmetrically meshed on the inner surface of the chain belt (23) in the front and rear; two sprockets (26) located at the front are fixedly connected to a driving shaft (261); the driving shaft (261) is connected to one output end of the gearbox (53) through a belt drive; an arc-shaped limiting groove (24) is provided at the front of one side of the P-shaped block (311) close to the straight slide groove (21); a toggle plate (22) is slidably connected to the inner surface of the arc-shaped limiting groove (24) and is rotatably connected to the P-shaped block (311) through a torsion spring shaft.

10. The surface polishing device for a metal shell used in tablet computer production according to claim 9, characterized in that: The driven component (25) includes a slider (251) slidably connected to the inner surface of the straight slide groove (21); a slide groove (252) is provided at the upper end of the slider (251); an arc block (253) is slidably connected to the inner surface of the slide groove (252); a compression spring (254) is fixedly connected to the lower end of the arc block (253) and the bottom wall of the inner cavity of the slide groove (252); a slide groove (256) is provided at one end of the slider (251) close to the chain belt (23); a toggle rod (255) is slidably connected to the inner surface of the slide groove (256) and fixedly connected to the adjacent side wall of the chain belt (23); and the height of the slide groove (256) is greater than the height of the chain belt (23).

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