Polishing device

Abstract

The invention provides a grinding device. The grinding device comprises a base and a grinding wheel, the conveying mechanism is mounted on the base and used for conveying workpieces in the conveying direction; the lifting polishing assembly comprises a lifting mechanism installed on the base, the lifting mechanism is connected with a lifting frame body, the lifting mechanism can drive the lifting frame body to ascend and descend in the vertical direction, at least two polishing mechanisms are installed on the lifting frame body and located above the conveying mechanism, and the polishing faces of the polishing mechanisms face the conveying mechanism; the grinding mechanisms are arranged at intervals in the conveying direction. Due to the fact that the at least two grinding mechanisms are installed on the lifting frame body, on one hand, secondary grinding of a workpiece can be achieved, the grinding success rate is guaranteed, the heights of all the grinding mechanisms installed on the lifting frame body can be adjusted at the same time through lifting of the lifting mechanism, and different grinding depths can be switched more quickly; and the polishing requirements of workpieces with different thicknesses are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of polishing devices, in particular to a polishing device. BACKGROUND

[0002] The pads and pins of a circuit board are prone to oxidation, thereby affecting the welding stability. In order to improve the stable electrical connection between the components and the pads after welding, the circuit board is often polished before welding to remove the oxidation layer at the pads of the circuit board.

[0003] In the related art, the circuit board is often polished manually, which is inefficient and cannot meet the high-efficiency welding requirement. Moreover, the polishing thickness is difficult to control, and the polishing depth is often too shallow or too deep. It can be understood that if the polishing depth is too shallow, the oxidation layer may not be completely removed, which affects the subsequent welding. If the polishing depth is too deep, the pads may be directly polished away, which cannot meet the subsequent welding work. SUMMARY

[0004] The present application provides a polishing device for improving the efficiency and quality of polishing a circuit board.

[0005] The present application provides a polishing device, comprising a base; a conveying mechanism mounted on the base, the conveying mechanism being used to convey a workpiece along a conveying direction; and a lifting and polishing assembly, comprising a lifting mechanism mounted on the base, the lifting mechanism being connected with a lifting frame, the lifting mechanism being capable of driving the lifting frame to lift along a vertical direction, at least two polishing mechanisms being mounted on the lifting frame, the polishing mechanisms being located above the conveying mechanism, the polishing surfaces of the polishing mechanisms facing the conveying mechanism, and each polishing mechanism being arranged along the conveying direction.

[0006] In one embodiment, the lifting frame comprises a plurality of screw rods, each screw rod extending along the vertical direction, and each screw rod being spaced apart from each other; the lifting mechanism comprises a lifting drive member, the lifting drive member being connected with a transmission chain, the transmission chain being connected with a plurality of transmission sprockets, each transmission sprocket being connected with a torsion member, the torsion member being provided with an internal thread corresponding to the screw rod, and the transmission sprocket and the screw rod are one-to-one threadedly connected, when the transmission chain is driven by the lifting drive member to act, the transmission chain can drive each transmission sprocket to rotate synchronously, so that each screw rod rises or descends synchronously.

[0007] In one embodiment, the lifting frame body comprises a mounting frame and four screw rods, the screw rods and the polishing mechanism are mounted on the mounting frame, the four screw rods form a polishing area, and each polishing mechanism is arranged in the polishing area. In one embodiment, the polishing mechanism comprises a first roller, a second roller and a polishing belt, the polishing belt extends in a closed manner, the first roller and the second roller are arranged on the inner side of the polishing belt and respectively abut the inner surface of the polishing belt to drive the polishing belt to polish the workpiece. In one embodiment, the polishing mechanism further comprises a support frame located on the inner side of the polishing belt, the support frame is connected with the mounting frame, the support frame is connected with a first support and a second support, the first roller is rotatably mounted on the first support, and the second roller is rotatably mounted on the second support.

[0008] In one embodiment, the polishing mechanism further comprises a polishing drive motor mounted on the mounting frame and located below the conveying mechanism, the polishing drive motor is connected with the first roller through a belt to drive the first roller to rotate. In one embodiment, the lifting frame body is further provided with a dust removal mechanism, the dust removal mechanism is located at the rear side of the polishing mechanism to collect the residues generated during polishing of the polishing mechanism.

[0009] In one embodiment, the dust removal mechanism comprises a dust removal cover, a suction port is arranged at the top of the dust removal cover, and the suction port is used to communicate with a suction device.

[0010] In one embodiment, the front side and the rear side of the polishing mechanism are provided with pressing rollers, and the pressing rollers are rotatably mounted on the lifting frame body. In one embodiment, the conveying mechanism is a conveyor belt.

[0011] Compared with the prior art, the application has the advantages that, because the conveying mechanism is arranged below the polishing mechanism, the workpiece can be placed on the conveying mechanism, the conveying mechanism is used to automatically convey the workpiece, and the polishing mechanism arranged on the conveying mechanism is used to automatically polish the workpiece, thereby reducing the working intensity of the workers and improving the polishing efficiency of the circuit board. Because the polishing mechanism is arranged on the lifting frame body of the lifting mechanism, the height of the lifting frame body and the polishing mechanism can be adjusted by the lifting mechanism, so that the polishing depth of each workpiece is consistent, thereby improving the stability of the polishing quality and avoiding the problem of low polishing quality caused by unstable polishing depth. Meanwhile, because at least two polishing mechanisms are arranged on the lifting frame body, on the one hand, the secondary polishing of the workpiece can be realized to ensure the polishing success rate, and the height of all the polishing mechanisms arranged on the lifting frame body can be adjusted by the lifting of the lifting mechanism, so that different polishing depths can be switched more quickly to meet the polishing requirements of workpieces of different thicknesses. BRIEF DESCRIPTION OF DRAWINGS

[0012] Hereinafter, the application will be described in more detail based on the embodiments and with reference to the drawings.

[0013] Figure 1 is a front view of a polishing device in an embodiment of the application; Figure 2 is a perspective view of a lifting polishing assembly in an embodiment of the application; Figure 3 is a perspective view of a base in an embodiment of the application; Figure 4 is a right view of a polishing device in an embodiment of the application; Figure 5 is a top view of a base in an embodiment of the application; Figure 6 is a sectional view of a base in an embodiment of the application; Figure 7 is a perspective view of a polishing device in an embodiment of the application; Figure 8 is a perspective view of a polishing device in an embodiment of the application; Figure 9 is a sectional view of a polishing device in an embodiment of the application; Figure 10 is a sectional view of a polishing device in an embodiment of the application; Figure 11 is a rear perspective view of a polishing device in an embodiment of the application.

[0014] Reference signs: 100, base; 110, support rod; 200, conveying mechanism; 210, conveying drive motor; 300, lifting polishing assembly; 310, lifting mechanism; 311, lifting drive; 312, transmission chain; 313, transmission sprocket; 314, torsion member; 320, lifting frame; 321, screw rod; 330, polishing mechanism; 331, first roller shaft; 332, second roller shaft; 333, polishing belt; 334, support frame; 335, first support; 3351, waist-shaped hole; 336, second support; 337, polishing drive motor; 338, belt; 3391, first adjusting member; 3392, second adjusting member; 340, compression roller shaft; 400, dust removal mechanism; 410, dust removal cover; 420, suction port. DETAILED DESCRIPTION

[0015] The application will be further described below with reference to the drawings.

[0016] Referring to Figures 1 to 3 The application provides a polishing device, which comprises a base 100, a conveying mechanism 200 and a lifting polishing assembly 300.

[0017] The conveying mechanism 200 is installed on the base 100, and the conveying mechanism 200 is used for conveying workpieces along a conveying direction, so that the automatic conveying of the workpieces can be realized, the feeding work during manual polishing is saved, and the polishing efficiency is improved.

[0018] The lifting polishing assembly 300 comprises a lifting mechanism 310 installed on the base 100, the lifting mechanism 310 is connected with a lifting frame 320, at least two polishing mechanisms 330 are installed on the lifting frame 320, the polishing mechanisms 330 are located above the conveying mechanism 200, and polishing surfaces of the polishing mechanisms 330 face the conveying mechanism 200.

[0019] That is to say, during the conveying of the workpieces by the conveying mechanism 200, the workpieces will move below the polishing mechanisms 330 and be attached to the polishing surfaces of the polishing mechanisms 330, so that the polishing surfaces of the polishing mechanisms 330 are used to polish the workpieces.

[0020] The polishing mechanisms 330 on the lifting frame 320 are arranged at intervals along the conveying direction, that is to say, when the workpieces move along the conveying direction under the action of the conveying mechanism 200, the workpieces will pass through the polishing mechanisms 330 installed on the lifting frame 320 in sequence, so that the polishing mechanisms 330 are used to polish the same workpiece, and the polishing effect on the workpieces is ensured.

[0021] The lifting mechanism 310 can drive the lifting frame 320 to lift along the vertical direction, so that the height of the polishing mechanism 330 mounted on the lifting frame 320 can be adjusted, and the height difference between the polishing mechanism 330 and the conveying mechanism 200 can be adjusted.

[0022] It can be understood that when the workpiece with a small thickness needs to be polished, the height of the lifting frame 320 can be adjusted downward by the lifting mechanism 310, so that the plurality of polishing mechanisms 330 mounted on the lifting frame 320 can be lowered synchronously, so that the polishing mechanism 330 can polish the workpiece with a small thickness.

[0023] When the workpiece with a large thickness needs to be polished, the height of the lifting frame 320 can be adjusted upward by the lifting mechanism 310, so that the plurality of polishing mechanisms 330 mounted on the lifting frame 320 can be raised synchronously, so that the polishing depth of the polishing mechanism 330 is not too deep due to the small gap between the polishing mechanism 330 and the conveying mechanism 200.

[0024] That is, the polishing device provided by the application can not only improve the polishing efficiency of the workpiece, realize batch polishing of the workpiece, but also can realize multiple polishing of a workpiece to ensure the polishing effect of the workpiece, and can also adjust the height of the plurality of polishing mechanisms 330 by driving the lifting frame 320 to lift by the lifting mechanism 310, so as to adapt to the polishing requirements of workpieces with different thicknesses. The polishing efficiency and polishing quality are improved, and the polishing work of workpieces with different thicknesses can be coped with.

[0025] In some implementations, polishing mechanisms 330 with different polishing accuracies can be arranged on the lifting frame 320, for example, the polishing accuracy of each polishing mechanism 330 can be gradually increased along the conveying direction, so that the workpiece can first contact the polishing mechanism 330 with low polishing accuracy to complete preliminary polishing when conveying along the conveying direction, and then pass through the polishing mechanism 330 with high polishing accuracy for fine polishing or polishing, so that the polishing accuracy of the workpiece meets the design requirements.

[0026] The polishing accuracy of the polishing mechanism 330 can be controlled by controlling the roughness of the polishing surface of the polishing belt 333.

[0027] Referring to Figures 2 to 6 In some implementations, the lifting frame 320 includes a plurality of screw rods 321, the screw rods 321 extend along the vertical direction, and each screw rod 321 is spaced apart from each other.

[0028] The lifting mechanism 310 comprises a lifting driving member 311 connected with a transmission chain 312, the transmission chain 312 is simultaneously connected with a plurality of transmission sprockets 313, each of the transmission sprockets 313 is respectively connected with a torsion member 314, the torsion member 314 is provided with an internal thread corresponding to the screw rod 321, and the transmission sprocket 313 and the screw rod 321 are one-to-one threadedly connected. When the lifting driving member 311 drives the transmission chain 312 to act, the transmission chain 312 can drive each transmission sprocket 313 to rotate synchronously, so as to make each screw rod 321 rise or descend synchronously.

[0029] That is, the rotation of the plurality of torsion members 314 can be realized by connecting the transmission chain 312 with the plurality of transmission sprockets 313, and then the synchronous rotation and lifting adjustment of the plurality of screw rods 321 are completed, the stability of the lifting process is improved, compared with the independent lifting of each screw rod 321, the inclination of the lifting frame body 320 caused by the uneven lifting height of the lifting frame body 320 is avoided. Compared with the lifting work of supporting the entire lifting frame body 320 by only one screw rod 321, the synchronous lifting of the plurality of screw rods 321 arranged at intervals can make the support force of each region of the lifting frame body 320 relatively balanced, and the instability of the lifting frame body 320 caused by single-point force is avoided.

[0030] Among them, the torsion member 314 for driving the screw rod 321 to rotate and lift can be integrally arranged with the corresponding transmission sprocket 313, or a gear structure can be arranged on the transmission sprocket 313 and engaged with the torsion member 314, so that when the transmission sprocket 313 is driven to rotate by the transmission chain 312, the torsion member 314 can also rotate.

[0031] Of course, in order to ensure that the lifting of the screw rod 321 can drive the lifting of the lifting frame body 320, a sleeve structure can be formed in the lifting frame body 320, so that the screw rod 321 is inserted into the corresponding sleeve structure, and the dislocation of the screw rod 321 relative to the lifting frame body 320 is avoided. A baffle structure located at the top of the screw rod 321 is arranged in the sleeve structure, so that the top of the screw rod 321 abuts against the baffle structure in the sleeve, so that the baffle structure can be lifted upward during the lifting of the screw rod 321, and the main part of the lifting frame body 320 is driven to move upward.

[0032] Referring to Figure 1 , Figure 2 and Figure 3 , in some implementations, the lifting frame body 320 comprises a mounting frame and four screw rods 321, the screw rods 321 and the polishing mechanism 330 are mounted on the mounting frame, the four screw rods 321 enclose a polishing area, and each polishing mechanism 330 is arranged in the polishing area.

[0033] That is, the height adjustment of the lifting frame body 320 is realized by four screw rods 321, which can make the lifting process more stable compared with the single screw rod 321. And because the polishing mechanism 330 is located in the polishing area surrounded by the screw rods 321, on the one hand, the screw rods 321 can be spaced far apart, so as to avoid the horizontal inclination of the mounting frame being too large in the case of height difference between the screw rods 321. On the other hand, the screw rods 321 can form a blocking structure to reduce the risk of workpiece outflow and the risk of foreign matter entering the polishing area.

[0034] Referring to Figure 1 , Figure 7 , Figure 8 and Figure 9 , in some implementations, the polishing mechanism 330 includes a first roller 331, a second roller 332, and a polishing belt 333. The polishing belt 333 extends in a circumferential direction and is in a closed form. The first roller 331 and the second roller 332 are both arranged on the inner side of the polishing belt 333 and respectively abut the inner surface of the polishing belt 333 to drive the polishing belt 333 to polish the workpiece.

[0035] That is, the first roller 331 and the second roller 332 can drive the polishing belt 333 to move by rotating, and then the first roller 331 and the second roller 332 abutting the inner surface of the polishing belt 333 can drive the polishing belt 333 to rotate in the circumferential direction, so that the outer surface of the polishing belt 333 facing the conveying mechanism 200 can polish the workpiece.

[0036] In some implementations, the movement direction of the lower surface of the polishing belt 333 is opposite to the conveying direction, that is, when the workpiece moves along the conveying direction under the action of the conveying mechanism 200, the lower surface of the polishing belt 333 abuts the workpiece on the conveying mechanism 200, and the movement direction of the upper surface of the polishing belt 333 is opposite to the conveying direction of the workpiece, so as to improve the polishing effect of the polishing belt 333 on the workpiece.

[0037] It can be understood that the rotation speed of the polishing belt 333 can be adjusted by controlling the rotation speed of the first roller 331 or the second roller 332, so as to adjust the polishing speed of the workpiece.

[0038] In order to enable the first roller 331 and the second roller 332 to drive the polishing belt 333 to rotate, an anti-slip structure can be arranged on the inner surface of the polishing belt 333, and an anti-slip structure can be arranged on the outer surface of the first roller 331 and the second roller 332, so as to increase the friction between the first roller 331, the second roller 332 and the inner surface of the polishing belt 333, reduce the slip of the polishing belt 333, and bring better polishing effect.

[0039] In some implementations, the inner surface of the polishing belt 333 and the outer surfaces of the first roller shaft 331 and the second roller shaft 332 are provided with tooth structures respectively, so that the polishing belt 333 is connected to the first roller shaft 331 and the second roller shaft 332 respectively through the meshing between the teeth and the teeth, and the polishing belt 333 can be polished on the workpiece along with the rotation of the first roller shaft 331 and the second roller shaft 332.

[0040] In some implementations, one of the first roller shaft 331 and the second roller shaft 332 drives the polishing belt 333 and the rotation of the other roller shaft, that is, one of the first roller shaft 331 and the second roller shaft 332 is a driving roller shaft, and the other roller shaft is a driven roller shaft driven by the polishing belt 333, and the driven roller shaft is mainly used to expand the polishing belt 333 from the inside to ensure that the inner surface of the polishing belt 333 is always in contact with the two roller shafts. In some implementations, the two roller shafts can also be controlled to rotate synchronously, and the peripheral edge linear speeds of the two roller shafts are controlled to be the same, so as to achieve the effect of synchronous driving of the polishing belt 333.

[0041] It can be understood that more roller shafts can also be arranged inside the polishing belt 333, for example, three or four roller shafts are arranged to contact different areas of the inner surface of the polishing belt 333 to tension the polishing belt 333, so that the polishing belt 333 can be in contact with the outer surfaces of the roller shafts and rotate with the roller shafts to complete the polishing work.

[0042] Referring to Figures 7 to 9 In some implementations, the polishing mechanism 330 further includes a support frame 334 located on the inner side of the polishing belt 333, the support frame 334 is connected to the mounting frame, the support frame 334 is connected with a first support 335 and a second support 336, and the first roller shaft 331 is rotatably installed on the first support 335 and the second roller shaft 332 is rotatably installed on the second support 336.

[0043] By arranging the support frame 334, the first support 335 and the second support 336, the two roller shafts can be supported, and the polishing belt 333 can be positioned, so as to improve the stability of the polishing mechanism 330.

[0044] Referring to the figure, in some implementations, a first adjusting member 3391 can be provided between the support frame 334 and the first bracket 335. The height difference between the support frame 334 and the first bracket 335 can be adjusted by the first adjusting member 3391, thereby adjusting the height of the first roller 331 installed on the first bracket 335. Alternatively, a second adjusting member 3392 can be provided between the support frame 334 and the second bracket 336. The height difference between the support frame 334 and the second bracket 336 can be adjusted by adjusting the second adjusting member 3392, thereby adjusting the height of the second roller 332 installed on the second bracket 336.

[0045] In the figure, the first adjusting member 3391 is a telescopic mechanism, while the second adjusting member 3392 is a crank-connecting rod mechanism. The first bracket 335 is provided with a vertically extending waist-shaped hole 3351, which can drive the first bracket 335 to move vertically along the support frame 334 through the second adjusting member 3392.

[0046] By setting the first adjusting member 3391 and the second adjusting member 3392, the relative position of the first roller shaft 331 and the second roller shaft 332 can be adjusted. This allows for the reduction of the gap between the first roller shaft 331 and the second roller shaft 332 during the installation or removal of the grinding belt 333. This facilitates the separation of the grinding belt 333 from the outer surfaces of the first roller shaft 331 and the second roller shaft 332, thus reducing the wear and tear on the grinding belt 333. The difficulty of disassembling and assembling 3 is reduced. After the grinding belt 333 is fitted over the first roller shaft 331 and the second roller shaft 332, the height difference between the first roller shaft 331 and the second roller shaft 332 can be increased by controlling the first adjusting member 3391 or the second adjusting member 3392 to ensure the tension of the grinding belt 333, thereby increasing the friction between the grinding belt 333 and the first roller shaft 331 and the second roller shaft 332, and ensuring that the grinding belt 333 can rotate synchronously with the rotation of the first roller shaft 331 and the second roller shaft 332.

[0047] See Figure 7 , Figure 10 as well as Figure 11 As shown, in some implementations, the radius of the first roller 331 is larger than the radius of the second roller 332, and the first roller 331 is located below the second roller 332. That is to say, when the workpiece contacts the grinding belt 333, the first roller 331 mainly exerts downward pressure on the grinding belt 333 and the workpiece. By setting the radius of the first roller 331 to be larger, the contact area between the grinding belt 333 and the workpiece can be increased, thereby improving the grinding effect of the grinding belt 333 on the workpiece.

[0048] See Figure 1 , Figure 9 as well as Figure 11As shown in FIG. 13, in some embodiments, the polishing mechanism 330 further comprises a polishing driving motor 337, which is installed on the mounting frame and located below the conveying mechanism 200. The polishing driving motor 337 is connected with the first roller shaft 331 through a belt 338 to drive the first roller shaft 331 to rotate. That is, the polishing driving motor 337 drives the belt 338 to rotate, and then the belt 338 drives the first roller shaft 331 to rotate. The first roller shaft 331 drives the polishing belt 333 to rotate to achieve the polishing work of the workpiece.

[0049] In the present application, the polishing driving motor 337 is connected with the first roller shaft 331 through the belt 338, which can make the polishing driving motor 337 and the first roller shaft 331 have a larger axial distance. Thus, the first roller shaft 331 and the polishing driving motor 337 can be distributed on opposite sides of the conveying mechanism 200. Compared with the case that the polishing driving motor 337 is arranged above the conveying mechanism 200 which has a large number of parts, the polishing driving motor 337 is arranged below the conveying mechanism 200 which is more spacious. This reduces the restrictions on the size and installation angle of the polishing driving motor 337, expands the selection range of the polishing driving motor 337, and reduces the installation difficulty of the polishing driving motor 337.

[0050] In the present application, in order to arrange the first roller shaft 331 and the polishing driving motor 337 on the upper and lower sides of the conveying mechanism 200 respectively, the first roller shaft 331 is arranged to be relatively long and one end of the first roller shaft 331 extends to the outside of the conveying mechanism 200. In this way, the belt 338 can connect the first roller shaft 331 and the polishing driving motor 337 on both sides of the conveying mechanism 200.

[0051] Referring to Figure 1 , Figure 7 and Figure 9 As shown in FIG. 13, in some embodiments, the lifting frame 320 further comprises a dust removal mechanism 400, which is located at the rear side of the polishing mechanism 330 to collect the residues generated during the polishing of the polishing mechanism 330.

[0052] Here, the rear side means that the workpiece passes through the polishing mechanism 330 first and then passes through the dust removal mechanism 400. Thus, the dust removal mechanism 400 can suck out the residues generated during the polishing of the workpiece, avoid affecting the subsequent welding work due to too many residues remaining on the workpiece, and remove the residues attached to the polishing surface through the dust removal of the dust removal mechanism 400, thereby avoiding scratching or contaminating the workpiece due to the residues remaining on the polishing surface.

[0053] Referring to Figure 1 , Figure 7 and Figure 9As shown, in some implementations, the dust removal mechanism 400 includes a dust removal cover 410, and the top of the dust removal cover 410 is provided with an air suction port 420 for communicating with the air suction device. That is, the air suction port 420 can be sucked by the air suction device to suck out the residues on the back side of the polishing belt 333, thereby achieving the dust removal effect.

[0054] As shown in Figure 1 , Figure 7 and Figure 9 , the dust removal cover 410 can be arranged in a structure of being large at the bottom and small at the top, and the width gradually decreases from bottom to top, so that the residues can flow upward along the lower side of the dust removal cover 410 under the negative pressure formed by the air suction device to the air suction port 420 above, thereby achieving the dust removal effect.

[0055] It can be understood that the dust removal mechanism 400 can also be arranged as a blowing mechanism to achieve cleaning of the workpiece surface and the polishing belt 333 surface by blowing. Or a movable brush is arranged to achieve cleaning of the workpiece surface and the polishing belt 333 surface. That is, the dust removal mechanism 400 in the present application is not only limited to one kind of air suction dust removal, but also can be other forms of residue cleaning mechanism, and can also be a combination of multiple residue cleaning mechanisms, for example, the dust removal mechanism 400 includes the dust removal cover 410 and the air suction device, and also includes a movable brush arranged at the dust removal cover 410, thereby achieving multiple ways of cleaning and cleaning work, and further reducing residue residues on the workpiece.

[0056] In some implementations, each polishing mechanism 330 corresponds to one dust removal mechanism 400, for example, as shown in the figure, two polishing mechanisms 330 are installed on the lifting frame body 320, and one dust removal mechanism 400 is arranged at the back side of each polishing mechanism 330. That is, when the workpiece is polished by the polishing device of the present application, the workpiece is first polished by the front polishing mechanism 330, and the dust removal mechanism 400 at the back side is used to remove the residues remaining on the workpiece and the residues remaining on the polishing belt 333. After one polishing, the workpiece will be polished again at the second polishing mechanism 330 to ensure that the workpiece can be polished completely, and the workpiece after the second polishing will be dusted at the second dust removal mechanism 400 to avoid residues remaining on the workpiece due to the second polishing.

[0057] It can be understood that when more polishing mechanisms 330 are arranged on the lifting frame body 320, the number of dust removal mechanisms 400 arranged on the lifting frame body 320 can be adjusted, so that the dust removal mechanism 400 corresponds to the polishing mechanism 330 one by one. Ensure that the workpiece can be immediately dusted by the corresponding dust removal mechanism 400 after polishing by each polishing mechanism 330, so as to avoid the decrease of subsequent polishing effect due to the residues remaining on the workpiece surface.

[0058] As shown in Figure 1 , Figure 7 and Figure 9 , in some implementations, the front side and the rear side of the polishing mechanism 330 are provided with the pressing roller shafts 340, which are rotatably installed on the lifting frame body 320. That is, the workpiece will first pass through the pressing roller shafts 340 provided on the front side of the polishing mechanism 330 before contacting the polishing mechanism 330. The pressing roller shafts 340 can press the workpiece downward, so that the workpiece can more smoothly enter the gap between the polishing mechanism 330 and the conveying mechanism 200, facilitating the polishing of the workpiece by the polishing mechanism 330. Moreover, because the pressing roller shafts 340 are provided, the stability of the workpiece can be improved, and the workpiece can be prevented from being skewed during polishing.

[0059] Meanwhile, after the workpiece is polished by the polishing mechanism 330, the workpiece will flow into the pressing roller shafts 340 provided on the rear side of the polishing mechanism 330. By simultaneously fixing the workpiece by the polishing mechanism 330 and the pressing roller shafts 340, the lifting of the workpiece after polishing by the polishing mechanism 330 can be reduced.

[0060] As shown in Figure 1 , Figure 7 and Figure 9 , the lifting frame body 320 is provided with two polishing mechanisms 330, and each polishing mechanism 330 corresponds to a set of pressing roller shafts 340. That is, the pressing roller shafts 340 are also provided between the two polishing mechanisms 330 to ensure that the workpiece is still limited by the pressing roller shafts 340 between the two polishing processes, so that the workpiece cannot be lifted and cannot enter the lower side of the polishing mechanism 330 to complete the polishing process.

[0061] As shown in Figure 4 and Figure 7 , in some implementations, the conveying mechanism 200 is a conveyor belt. That is, during the movement of the workpiece by the conveying mechanism 200, the workpiece is placed on the conveyor belt, and the conveyor belt can provide support force for the workpiece.

[0062] The conveying mechanism 200 in the present application further includes a conveying drive motor 210, which is used to drive the conveyor belt to convey the workpiece in the conveying direction. The conveying drive motor 210 can be installed on the base 100.

[0063] As shown in Figure 1 , Figure 2 and Figure 3 , the base 100 is provided with a support rod 110, and the conveying mechanism 200 is installed on the support rod 110 of the base 100.

[0064] While the present application has been described with reference to the preferred embodiments, it is to be understood that various modifications can change the scope of the present application to which they are not intended to deviate. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided that there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A sharpening device characterized by, It comprises: a base; a conveying mechanism mounted on the base, the conveying mechanism being used to convey workpieces along a conveying direction; and a lifting polishing assembly comprising a lifting mechanism mounted on the base, the lifting mechanism being connected with a lifting frame body, the lifting mechanism being capable of driving the lifting frame body to lift along a vertical direction, at least two polishing mechanisms being mounted on the lifting frame body, the polishing mechanisms being located above the conveying mechanism, and the polishing surfaces of the polishing mechanisms facing the conveying mechanism, each of the polishing mechanisms being arranged in intervals along the conveying direction.

2. The polishing device according to claim 1, wherein the lifting frame body comprises a plurality of screw rods, each of the screw rods extending along the vertical direction, and each of the screw rods being spaced from each other; the lifting mechanism comprises a lifting drive member, the lifting drive member being connected with a transmission chain, the transmission chain being simultaneously connected with a plurality of transmission sprockets, each of the transmission sprockets being connected with a torsion member, the torsion member being provided with an inner thread corresponding to the screw rods, and the transmission sprockets being in one-to-one thread connection with the screw rods, when the transmission chain is driven by the lifting drive member to act, the transmission chain can drive each of the transmission sprockets to rotate synchronously, so that each of the screw rods rises or falls synchronously.

3. The polishing device according to claim 2, wherein the lifting frame body comprises a mounting frame and four screw rods, the screw rods and the polishing mechanisms being mounted on the mounting frame, the four screw rods surrounding a polishing area, and each of the polishing mechanisms being arranged in the polishing area.

4. The polishing device according to any one of claims 1-3, wherein the polishing mechanism comprises a first roller, a second roller and a polishing belt, the polishing belt extending circumferentially and being in a closed shape, the first roller and the second roller being arranged on the inner side of the polishing belt and respectively abutting the inner surface of the polishing belt, so as to drive the polishing belt to polish workpieces.

5. The polishing device according to claim 4, wherein the polishing mechanism further comprises a support frame, the support frame being located on the inner side of the polishing belt, the support frame being connected with the mounting frame, the support frame being connected with a first support and a second support, the first roller being rotatably mounted on the first support, and the second roller being rotatably mounted on the second support.

6. The polishing device according to claim 4, wherein the polishing mechanism further comprises a polishing drive motor, the polishing drive motor being mounted on the mounting frame and located below the conveying mechanism, the polishing drive motor being connected with the first roller through a belt, so as to drive the first roller to rotate.

7. The polishing device according to any one of claims 1-3, wherein a dust removal mechanism is further mounted on the lifting frame body, the dust removal mechanism being located at the rear side of the polishing mechanism, so as to collect residues generated when the polishing mechanism polishes.

8. The polishing device according to claim 7, wherein the dust removal mechanism comprises a dust removal cover, a suction port being arranged at the top of the dust removal cover, the suction port being used to communicate with a suction device.

9. The polishing device according to any one of claims 1-3, wherein, the front side and the rear side of the polishing mechanism are provided with pressing rollers, which are rotatably installed on the lifting frame body.

10. The polishing device according to any one of claims 1-3, wherein, the conveying mechanism is a conveyor belt.

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