Concave-convex surface polishing and wire drawing equipment

Abstract

The invention belongs to the technical field of machining equipment, and provides concave-convex surface polishing and wire drawing equipment which comprises a grinding device and a mechanical arm, the grinding device comprises a grinding mechanism and a driving mechanism, and the driving mechanism is used for driving the grinding mechanism to do reciprocating translational motion; the grinding mechanism comprises an abrasive belt, a roller set, a first motor and a supporting plate, the roller set comprises a first roller and a second roller, and the first motor is used for driving the roller set to drive the abrasive belt to operate; the abrasive belt is provided with a first machining position located above the supporting plate and a second machining position located on the second roller. A rotating head is arranged at the operating end of the mechanical arm, a first clamping seat and a second clamping seat are arranged on the rotating head, a first mounting part is arranged on the first clamping seat, and a second mounting part is arranged on the second clamping seat; the rotating head can rotate forwards and backwards to drive the first mounting part to move to a first machining position or move the second mounting part to a second machining position. The problems that an existing workpiece with a concave-convex surface is difficult in wire drawing treatment and low in machining efficiency are solved.

Description

Technical Field

[0001] The present application belongs to the technical field of mechanical processing equipment, and in particular relates to a concave-convex surface polishing and wire drawing equipment. Background Art

[0002] After machining, products need to be polished due to high surface roughness, especially 3D printed products. At present, automatic polishing equipment is suitable for the grinding of flat products. For products with concave and convex surfaces, only manual polishing can be adopted, which is not only inefficient, but also requires high requirements on operators to ensure consistent polishing strength. For some small parts, such as watch buckles, handheld polishing is more difficult.

[0003] In addition, some products need to be wire-drawn after polishing and grinding, so that linear textures are formed on the processed surface of the workpiece. The method adopted in the prior art is to perform wire-drawing on both sides of the workpiece synchronously from both sides of the workpiece, so that linear textures are synchronously formed on both sides of the workpiece. However, as customers' requirements for products increase, for the wire-drawing of workpieces with concave and convex sides, one of the two sides of the workpiece is convex and the other is concave. Since both sides are concave and convex, the above-mentioned traditional method of synchronous grinding with two wire-drawing rollers cannot be used. Only two independent wire-drawing devices can be set up, one device handles the wire-drawing of the concave surface of the workpiece, and the other device handles the wire-drawing of the convex surface of the workpiece. The workpiece needs to be switched between the two processing devices, which makes the operation cumbersome, increases the difficulty, and reduces the production efficiency. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a concave-convex surface polishing and wire drawing device to solve the technical problems of the prior art in that wire drawing of workpieces with concave-convex surfaces is difficult and the processing efficiency is low.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted in this application is: to provide a concave-convex surface polishing wire drawing equipment, comprising:

[0006] A grinding device, comprising a grinding mechanism and a driving mechanism, wherein the driving mechanism is used to drive the grinding mechanism to perform reciprocating translational motion so that a linear texture is formed on the surface of the workpiece being ground;

[0007] The grinding mechanism comprises a sanding belt, a roller group, a first motor and a support plate, wherein the sanding belt is sleeved on the roller group; the first motor is used to drive the roller group to drive the sanding belt to operate;

[0008] The roller group includes at least a first roller and a second roller, the support plate is arranged between the first roller and the second roller, and the abrasive belt portion located above the support plate is arranged as a first processing position for processing a convex surface of a workpiece; the outer peripheral profile of the second roller matches the concave surface of the workpiece, and the abrasive belt portion on the second roller is arranged as a second processing position for processing a concave surface of the workpiece;

[0009] A robotic arm, wherein a rotating head is provided on the operating end of the robotic arm, and a first clamping seat and a second clamping seat for respectively mounting workpieces are provided on the rotating head, wherein the first clamping seat has a first mounting portion for exposing a convex surface of the workpiece, and the second clamping seat has a second mounting portion for exposing a concave surface of the workpiece; the rotating head can rotate forward and reversely to drive the first mounting portion to move to the first processing position, or move the second mounting portion to the second processing position.

[0010] The concave-convex surface polishing and wire drawing equipment provided by the present application has the beneficial effect that: compared with the prior art, the concave-convex surface polishing and wire drawing equipment of the present application is redesigned for the wire drawing process of a workpiece with concave-convex double surfaces. On the one hand, a first processing position for processing the convex surface of the workpiece and a second processing position for processing the concave surface of the workpiece are provided on the grinding mechanism of the grinding device, so that a processing position for processing the concave-convex double surfaces is integrated on one device. On the other hand, the operating end of the mechanical arm is improved, and a rotating head is provided on the operating end. The rotating head is provided with a first clamping seat and a second clamping seat that can respectively mount the workpiece. The first mounting portion on the first clamping seat exposes the convex surface of the workpiece, and the second mounting portion on the second clamping seat exposes the concave surface of the workpiece. The short-range switching of the processing position of the workpiece can be quickly realized by rotating the rotating head in the forward or reverse direction, which is conducive to reducing the time-consuming and proofreading operation of disassembling the workpiece after processing from one device and then installing it on another device for further processing, effectively improving the convenience of operation and the yield rate, thereby improving production efficiency.

[0011] The structure of the grinding mechanism is improved. The grinding mechanism includes a bracket, and the bracket includes a bottom plate and a support plate erected on the bottom plate. The first motor is arranged on the bracket; the first roller and the second roller are both arranged on the support plate and arranged at the same height, so that the sanding belt portion between the first roller and the second roller is a flat surface, and the support plate is located below the flat surface and supports the flat surface. In this way, the support plate forms a support surface at the bottom of the first processing position to play a supporting role when the sanding belt is grinding the convex surface of the workpiece, so that the surface of the sanding belt can stably contact the convex surface of the workpiece, thereby improving the grinding and wire drawing effect of the convex surface of the workpiece.

[0012] In one embodiment, the bracket further includes a lifting mechanism for adjusting the height of the support plate, the lifting mechanism includes a vertical plate and a connecting plate, the vertical plate is arranged on the bottom plate, and a driver and a slide rail are arranged on the vertical plate; the support plate is connected to the slide rail on the vertical plate through the connecting plate; the output end of the driver is connected to the connecting plate, and drives the connecting plate along the slide rail to drive the support plate to move up and down. In this way, the height of the support plate can be adjusted by using the lifting mechanism according to the wear of the sand belt, so that the surface of the sand belt can remain close to the convex surface of the workpiece and continue to grind, effectively improving the utilization rate of the sand belt.

[0013] In one embodiment, the first roller in the roller group is connected to the output end of the first motor, and the second roller is detachably arranged on the support plate. In this way, the second rollers with different inner diameters can be replaced according to workpieces of different specifications, so that the outer peripheral profile of the second roller can be adapted to the concave curvature of workpieces of different specifications, effectively improving the adaptability of use.

[0014] In one embodiment, the roller group further includes a first pressing roller and a second pressing roller arranged on the support plate, wherein the first pressing roller is located below the second pressing roller and is staggered with the second pressing roller; the second pressing roller is arranged close to the first pressing roller, and the setting height of the second pressing roller is located between the second pressing roller and the first pressing roller; at least part of the abrasive belt is wound around the first pressing roller and the second pressing roller. On the one hand, the second roller at the second processing position can be arranged protrudingly, which is beneficial for the operating end of the robot arm to be free from interference from other structures when switching to the second processing position on the grinding device, and effectively improves the fit between the concave surface of the workpiece and the abrasive belt at the second processing position. On the other hand, the first pressing roller and the second pressing roller are staggered with each other on the same horizontal plane, so that at least part of the abrasive belt can be wound around the staggered first pressing roller and second pressing roller, effectively improving the compaction effect of the abrasive belt, thereby improving the tightness of the abrasive belt.

[0015] The structure of the driving mechanism is improved. The driving mechanism includes a mounting frame, a second motor, a rotating rod and a connecting rod. The rotating rod is provided with a connecting hole. One end of the connecting rod is arranged in the connecting hole of the rotating rod through a connecting shaft. The other end of the connecting rod is connected to the bottom plate of the bracket through a rotating shaft. The output shaft of the second motor is connected to the rotating rod. The second motor is used to drive the rotating rod to rotate unidirectionally, so that the connecting rod drives the bracket to reciprocate. In this way, the output shaft of the second motor can drive the rotating rod and the connecting rod to move by rotating unidirectionally, thereby driving the entire grinding mechanism to reciprocate, effectively improving the continuity of the grinding mechanism being driven to reciprocate.

[0016] In one embodiment, the grinding device is further provided with a pair of parallel tracks, and the pair of parallel tracks are both extended in the same direction as the connecting rod; the bracket is provided with connecting feet for mounting on the pair of parallel tracks. In this way, by utilizing the guiding function of the parallel tracks, the grinding mechanism can be translated along the length direction of the tracks during the process of being driven to reciprocate, thereby effectively improving the stability of the grinding mechanism being driven to reciprocate.

[0017] The structure on the operating end of the robot arm is improved, the rotating head is connected to the first clamping seat, the first clamping seat is provided with a first clamp extending in a first direction, and the first mounting portion is located on the extended end of the first clamp; the second clamping seat is connected to one side of the first clamping seat, the second clamping seat is provided with a second clamp extending in a second direction, the first direction is perpendicular to the second direction, and the second mounting portion is located on the extended end of the second clamp. In this way, by using the rotating head on the operating end of the robot arm to perform forward or reverse rotation, the short-range switching of the workpiece between the two processing positions of the grinding device can be quickly realized, effectively saving the clamping time of the workpiece, thereby improving the processing efficiency.

[0018] In one embodiment, the workpiece has a through hole; the first clamp and the second clamp each include at least one set of clamping blocks and adjusting screws, there is a gap between the clamping blocks, the set of clamping blocks is used to penetrate into the through hole of the workpiece and fix the workpiece from the inside with tension; the adjusting screw is used to tighten the gap so that the set of clamping blocks are close to each other to remove the workpiece. In this way, the workpiece is fixed from the inside of the workpiece by using a set of clamping blocks on the clamp, avoiding the need to set a clamping mechanism on the periphery of the workpiece, which is conducive to improving the fit between the workpiece processing surface and the abrasive belt, so that the entire processing surface on the workpiece can be processed in place, thereby improving the yield rate of the workpiece.

[0019] The structure of the entire concave-convex surface polishing wire drawing device is improved, and the concave-convex surface polishing wire drawing device also includes a water collecting box, and the grinding device is arranged in the water collecting box; the mechanical arm is arranged outside the water collecting box and can transfer the workpiece to the grinding device. The water collecting box is used to collect the water sprayed on the processing position when the grinding device is working, so as to ensure the cleanliness and hygiene of the processing environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1Schematic diagram of the three-dimensional structure of the workpiece Figure 1 ;

[0022] Figure 2 Schematic diagram of the three-dimensional structure of the workpiece Figure 2 ;

[0023] Figure 3 A schematic diagram of the overall structure of a concave-convex surface polishing and drawing device provided in an embodiment of the present application;

[0024] Figure 4 A schematic diagram of the structure of a workpiece provided in an embodiment of the present application in a first processing position of a grinding device;

[0025] Figure 5 A top view of a grinding device provided in an embodiment of the present application;

[0026] Figure 6 Schematic diagram of the three-dimensional structure of the grinding device provided in the embodiment of the present application Figure 1 ;

[0027] Figure 7 A schematic diagram of a structure in which a workpiece provided in an embodiment of the present application is in a second processing position of a grinding device;

[0028] Figure 8 Schematic diagram of the three-dimensional structure of the grinding device provided in the embodiment of the present application Figure 2 ;

[0029] Fig. 9 Schematic diagram of the three-dimensional structure of the grinding device provided in the embodiment of the present application Figure 3 ;

[0030] Fig.10 A schematic diagram of the three-dimensional structure of a bracket on a grinding mechanism provided in an embodiment of the present application;

[0031] Fig.11 Schematic diagram of the explosion structure of the grinding device provided in the embodiment of the present application Figure 1 ;

[0032] Fig.12 A schematic diagram of the assembly structure of the support plate and the connecting plate provided in an embodiment of the present application;

[0033] Fig.13 A front view of a grinding device provided in an embodiment of the present application;

[0034] Fig.14 Schematic diagram of the three-dimensional structure of the grinding device provided in the embodiment of the present application Figure 4 ;

[0035] Fig.15 Schematic diagram of the explosion structure of the grinding device provided in the embodiment of the present application Figure 2 ;

[0036] Fig.16 A schematic diagram of the internal structure of a driving mechanism provided in an embodiment of the present application;

[0037] Fig.17 A schematic diagram of the three-dimensional structure of the operating end of the robotic arm provided in an embodiment of the present application;

[0038] Fig.18 This is a schematic diagram of the enlarged structure of the operating end of the robotic arm provided in an embodiment of the present application.

[0039] Among them, the reference numerals in the figure are:

[0040] 100-workpiece; 101-convex surface; 102-concave surface;

[0041] 200-Robotic arm;

[0042] 300-grinding device;

[0043] 400-water collecting tank;

[0044] 1-rotating head; 11-first clamping seat; 111-first mounting portion; 12-second clamping seat; 121-second mounting portion; 13-first clamp; 14-second clamp; 15-fastener; 16-clamping block; 161-gap; 17-adjusting screw;

[0045] 2-grinding mechanism; 21-abrasive belt; 22-roller group; 221-first roller; 222-second roller; 223-first pressure roller; 224-second pressure roller; 23-first motor; 24-support plate; 25-first processing position; 26-second processing position;

[0046] 3-driving mechanism; 31-mounting frame; 32-second motor; 321-limiting pin; 33-rotating rod; 331-connecting hole; 332-fixing protrusion; 333-through hole; 334-fixing groove; 34-connecting rod; 341-connecting shaft; 35-track;

[0047] 4-bracket; 41-bottom plate; 42-support plate; 43-partition plate; 44-vertical plate; 441-slide rail; 45-connecting plate; 451-installation slot; 46-driver; 47-connecting foot. DETAILED DESCRIPTION

[0048] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0049] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0050] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0052] In the related art, for the wire drawing process of a workpiece, a commonly used method is to use a wire drawing roller, which has a linear texture on it, and use the wire drawing roller to grind the processing surface of the workpiece, so that a linear texture is formed on the processing surface of the workpiece.

[0053] For a workpiece with two sides, that is, both the two opposite processing surfaces on the workpiece need to be wire-drawn, a set of symmetrically arranged wire-drawing rollers can be set on the equipment, and the workpiece is passed between the two wire-drawing rollers. The two wire-drawing rollers are operated simultaneously to synchronously draw the two sides of the workpiece, so that linear textures are synchronously formed on both sides of the workpiece.

[0054] However, for workpieces with concave and convex surfaces on both sides, Figure 1 and Figure 2 As shown, the workpiece 100 is an arc-shaped bending body, and the workpiece 100 has a convex surface 101 on one side and a concave surface 102 on the other side. Both the concave surface 102 and the convex surface 101 on the workpiece 100 need to be wire-drawn. Since the workpiece 100 has two concave and convex surfaces, it is impossible to use the above-mentioned synchronous wire drawing roller method for processing. Only two independent wire drawing devices can be set up using the traditional method, one device processes the wire drawing of the concave surface 102 of the workpiece 100, and the other device processes the wire drawing of the convex surface 101 of the workpiece 100. The workpiece 100 needs to be transferred between the two processing devices, which makes the operation cumbersome and difficult, and reduces the production efficiency.

[0055] It can be seen that for the wire drawing process of the workpiece 100 with concave and convex surfaces, the current wire drawing equipment cannot meet the processing requirements. Therefore, the applicant has painstakingly studied and designed a device for wire drawing of the workpiece 100 with concave and convex surfaces, breaking the inherent thinking of industry professionals (the inherent thinking refers to the mechanism that can only be set on one device for a processing part of the workpiece 100), and creatively proposed a new concave and convex surface polishing wire drawing equipment, which has a processing part for wire drawing of the convex surface 101 and the concave surface 102 on the workpiece 100, and uses a mechanical arm to automatically adjust the position of the concave and convex surface of the workpiece 100, so that the wire drawing process of the concave and convex surface of the workpiece 100 can be completed on one device, effectively improving the processing efficiency, and solving the technical problems of the prior art that the wire drawing process of the workpiece 100 with concave and convex surfaces is difficult and the processing efficiency is low, which is now described in detail.

[0056] Please also read Figure 3 and Figure 4 The concave-convex surface polishing and drawing equipment includes a mechanical arm 200 and a grinding device 300.

[0057] A rotating head 1 is provided on the operating end of the robot arm 200, and a first clamping seat 11 and a second clamping seat 12 are provided on the rotating head 1 for respectively mounting the workpiece 100. The first clamping seat 11 has a first mounting portion 111 for exposing the convex surface 101 of the workpiece 100, and the second clamping seat 12 has a second mounting portion 121 for exposing the concave surface 102 of the workpiece 100. In this way, the workpieces 100 can be mounted on the first clamping seat 11 and the second clamping seat 12, respectively, so that the convex surface 101 on one workpiece 100 is exposed on the first mounting portion 111, and the concave surface 102 on the other workpiece 100 is exposed on the second mounting portion 121. The robot arm 200 can receive a control command to drive the rotating head 1 to rotate forward or reverse, thereby switching the processing positions of the first mounting portion 111 and the second mounting portion 121 on the grinding device 300.

[0058] For the structure of the grinding device 300, please refer to Figure 5 The grinding device 300 includes at least a grinding mechanism 2 and a driving mechanism 3. The driving mechanism 3 is used to drive the grinding mechanism 2 to perform reciprocating translational motion, so that a linear texture can be formed on the surface (convex surface 101 and concave surface 102) of the workpiece 100 being ground on the grinding mechanism 2.

[0059] Please also read Figure 5 and Figure 6The grinding mechanism 2 includes an abrasive belt 21, a roller group 22, a first motor 23 and a support plate 24. The roller group 22 includes at least a first roller 221 and a second roller 222. The abrasive belt 21 is mounted on the first roller 221 and the second roller 222. The first motor 23 is used to drive the roller group 22 to drive the entire abrasive belt 21 to operate. In this embodiment, the first roller 221 is connected to the output end of the first motor 23, and the first motor 23 drives the first roller 221 to drive the abrasive belt 21 and the second roller 222 to operate.

[0060] Please also read Figure 4 , Figure 6 and Figure 7 , the support plate 24 is disposed between the first roller 221 and the second roller 222, and the abrasive belt portion located above the support plate 24 is set as a first processing position 25 for processing the convex surface 101 of the workpiece 100. It can be understood here that the support plate 24 is used to support the abrasive belt portion on the first processing position 25, and when the robot arm 200 drives the workpiece 100 to move to the first processing position 25, the convex surface 101 of the workpiece 100 is pressed against the abrasive belt portion on the first processing position 25, and the other side of the abrasive belt portion will be pressed against the support plate 24, so that the abrasive belt 21 is kept close to the convex surface 101 of the workpiece 100 for grinding.

[0061] The outer peripheral contour of the second roller 222 matches the concave surface 102 of the workpiece 100, and the abrasive belt portion on the second roller 222 is set as a second processing position 26 for processing the concave surface 102 of the workpiece 100. Therefore, when the robot arm 200 drives the workpiece 100 to move to the second processing position 26, the concave surface 102 of the workpiece 100 is pressed against the abrasive belt portion of the second processing position 26, so that the abrasive belt portion on the second roller 222 grinds the concave surface 102 of the workpiece 100.

[0062] Compared with the prior art, the concave-convex surface polishing and wire drawing equipment provided in the embodiment of the present application is redesigned for the wire drawing processing of the workpiece 100 with concave-convex double sides. On the one hand, a first processing position 25 for processing the convex surface 101 of the workpiece 100 and a second processing position 26 for processing the concave surface 102 of the workpiece 100 are provided on the grinding mechanism 2 of the grinding device 300, so that the processing parts for processing the concave-convex double sides are integrated on one device. On the other hand, the operating end of the robot arm 200 is improved by providing a rotating head 1 on the operating end. The rotating head 1 is provided with a first clamping seat 11 and a second clamping seat 12 on which the workpiece 100 can be mounted respectively. The first mounting portion 111 on the first clamping seat 11 exposes the convex surface 101 of the workpiece 100, and the second mounting portion 121 on the second clamping seat 12 exposes the concave surface 102 of the workpiece 100. The workpiece 100 on the two clamping seats and the first processing position 25 and the second processing position 26 of the above-mentioned grinding device 300 can be quickly switched by rotating the rotating head 1 in the forward or reverse direction, thereby realizing a short-range conversion of two different processing positions.

[0063] In actual operation, after the concave and convex surfaces of a group (two) of workpieces 100 are processed, the clamping positions of the two workpieces 100 can be exchanged to process the concave and convex surfaces on the other side of the group of workpieces 100, thereby realizing batch processing of the workpieces 100 and effectively improving the processing efficiency.

[0064] The concave and convex surface polishing and drawing equipment provided in the embodiment of the present application has integrated processing positions on the grinding device 300 for respectively processing the concave surface 102 and the convex surface 101 of the workpiece 100, and is combined with the rotating head 1 on the operating end of the robot arm 200. The forward or reverse rotation of the rotating head 1 can quickly realize short-range switching of the processing position of the workpiece 100, which is beneficial to reducing the time-consuming and proofreading operations of removing the workpiece 100 from one device after processing and then installing it on another device for further processing, effectively improving the operational convenience and yield rate, and thus improving production efficiency.

[0065] For the grinding mechanism 2 on the grinding device 300, in one embodiment of the present application, please refer to Figure 8 and Fig. 9 The grinding mechanism 2 includes a bracket 4 , the bracket 4 includes a base plate 41 and a support plate 42 erected on the base plate 41 , and the first motor 23 is arranged on the bracket 4 .

[0066] Regarding the mounting structure of the support plate 42 on the bottom plate 41, in this embodiment, a plurality of vertically arranged partitions 43 may be preferably provided on the bottom plate 41, and the support plate 42 is arranged on the same side of each partition 43. The plurality of partitions 43 not only play the role of vertically fixing the support plate 42, but also play the role of separation, so that the first motor 23 and other components on the support plate 42 (such as the lifting mechanism described below) can be separated from each other to avoid mutual interference.

[0067] like Fig. 9 As shown, the first roller 221 and the second roller 222 of the roller group 22 are both arranged on the support plate 42, and the first roller 221 and the second roller 222 are both arranged at the same height, so that the sanding belt portion between the first roller 221 and the second roller 222 is a flat surface. The support plate 24 is located below the flat surface and is used to support the flat surface.

[0068] In this way, the support plate 24 forms a supporting surface at the bottom of the first processing position 25 to play a supporting role when the abrasive belt 21 grinds the convex surface 101 of the workpiece 100, so that the surface of the abrasive belt 21 can be in stable contact with the convex surface 101 of the workpiece 100, thereby improving the grinding and wire drawing effect of the convex surface 101 of the workpiece 100.

[0069] In actual applications, the sanding belt 21 is a consumable part. As the processing progresses, the surface working thickness or tension of the sanding belt 21 will gradually decrease, which will affect the grinding effect of the convex surface 101 of the workpiece 100. The sanding belt 21 needs to be replaced in time.

[0070] Here, in order to improve the use saturation and utilization rate of the abrasive belt 21, in one embodiment of the present application, please refer to Fig.10 , Fig.11 and Fig.12 The bracket 4 also includes a lifting mechanism for adjusting the height of the support plate 24. The lifting mechanism includes a vertical plate 44 and a connecting plate 45. The vertical plate 44 is vertically arranged on the bottom plate 41. The vertical plate 44 is provided with a driver 46 and a slide rail 441. The driver 46 can preferably adopt a driving device such as a linear cylinder.

[0071] In coordination, the support plate 24 is installed and connected to the slide rail 441 on the vertical plate 44 through the connecting plate 45. The output end of the driver 46 is connected to the connecting plate 45 and is used to drive the connecting plate 45 along the slide rail 441 to drive the support plate 24 to move up and down.

[0072] In this embodiment, if Fig.11 and Fig.12As shown, the end surface of the vertical plate 44 for connecting with the connecting plate 45 is provided with a slide rail 441; correspondingly, the back of the connecting plate 45 has a mounting groove 451, and is mounted on the slide rail 441 using the mounting groove 451. The support plate 24 is fixed on the connecting plate 45 and extends laterally below the abrasive belt 21. The driver 46 is arranged on one side of the vertical plate 44, and the output end of the driver 46 is connected to the connecting plate 45, and drives the connecting plate 45 to move up and down along the length direction of the slide rail 441, thereby adjusting the height of the support plate 24.

[0073] In this way, the height of the support plate 24 can be adjusted by the lifting mechanism according to the wear of the abrasive belt 21. For example, after the abrasive belt 21 starts to wear, the height of the support plate 24 is gradually raised by the lifting mechanism. Since the robot arm 200 drives the first clamping seat 11 to reach the first processing position 25 and then locks the position, by adjusting the height of the support plate 24, the surface of the abrasive belt 21 can be kept in close contact with the convex surface 101 of the workpiece 100 and continue to grind, thereby effectively improving the utilization rate of the abrasive belt 21.

[0074] In addition, for the contour of the concave surface 102 on the other side of the workpiece 100, the curvature of the concave surface 102 on workpieces 100 of different specifications is different, which makes it difficult for the outer peripheral contour of the second roller 222 to adapt to the curvature shape of the concave surface 102 on workpieces 100 of different specifications, affecting the grinding effect of the concave surface 102 of the workpiece 100.

[0075] To this end, in one embodiment of the present application, please refer to Fig. 9 and Fig.13 , the second roller 222 is detachably disposed on the support plate 42. In this embodiment, the first roller 221 is fixedly connected to the output end of the first motor 23, the second roller 222 is disposed on the support plate 42 via a roller shaft, and the second roller 222 is detachably mounted on the roller shaft.

[0076] In this way, the second roller 222 with different inner diameters can be replaced according to the workpieces 100 of different specifications, so that the outer peripheral contour of the second roller 222 can be adapted to the curvature of the concave surface 102 of the workpiece 100 of different specifications, effectively improving the adaptability of use and ensuring the grinding effect of the concave surface 102 of the workpiece 100.

[0077] In practical applications, the tightness of the abrasive belt 21 is also particularly important, otherwise the surface of the abrasive belt 21 cannot be well attached to the processing surface of the workpiece 100, affecting the grinding effect of the processing surface of the workpiece 100. In order to further improve the tightness of the abrasive belt 21, in one embodiment of the present application, refer to Fig.13 The roller group 22 further includes a first pressing roller 223 and a second pressing roller 224 disposed on the support plate 42 . The first pressing roller 223 is located below the second roller 222 and is staggered with respect to the second roller 222 in an up-and-down manner.

[0078] In this way, the second roller 222 on the second processing position 26 can be set to protrude, which is beneficial for the concave surface 102 of the workpiece 100 to fit easily on the second processing position 26 when the operating end of the robot arm 200 is switched to the second processing position 26 on the grinding device 300, avoiding interference from other structures (such as the structure of the first pressure roller 223), and effectively improving the fit between the concave surface 102 of the workpiece 100 and the abrasive belt 21 on the second processing position 26.

[0079] Among them, Fig.13 As shown, the second pressing roller 224 is disposed close to the first pressing roller 221 , and the second pressing roller 224 is disposed at a height between the second pressing roller 222 and the first pressing roller 223 , and at least a portion of the abrasive belt 21 is wound around the first pressing roller 223 and the second pressing roller 224 .

[0080] In this way, the first pressing roller 223 and the second pressing roller 224 are staggered on the same horizontal plane, so that at least a portion of the abrasive belt 21 can be wound around the staggered first pressing roller 223 and the second pressing roller 224, effectively improving the pressing effect on the abrasive belt 21, thereby improving the tension of the abrasive belt 21 and ensuring the processing effect on the workpiece 100.

[0081] In the grinding device 300 provided in the embodiment of the present application, the driving mechanism 3 is used to drive the entire grinding mechanism 2 to reciprocate during the operation of the grinding device 300, so that a linear texture can be formed on the processing surface of the workpiece 100 being ground to achieve a wire drawing effect.

[0082] Here, for the specific structure of the driving mechanism 3, in one embodiment of the present application, please refer to Fig.14 , Fig.15 and Fig.16 The driving mechanism 3 includes a mounting frame 31 , a second motor 32 , a rotating rod 33 and a connecting rod 34 , and a connecting hole 331 is provided on the rotating rod 33 .

[0083] One end of the connecting rod 34 has a protruding connecting shaft 341, and is set in the connecting hole 331 of the rotating rod 33 through the connecting shaft 341. The other end of the connecting rod 34 is connected to the bottom plate 41 of the bracket 4 through a rotating shaft, so that the connecting rod 34 and the bottom plate 41 of the bracket 4 can be adaptively moved, which is conducive to adapting to the swing amplitude of the connecting rod 34 driven by the rotating rod 33.

[0084] The output shaft of the second motor 32 is connected to the rotating rod 33 , and the second motor 32 is used to drive the rotating rod 33 to perform unidirectional rotation and swing, so that the connecting rod 34 drives the bracket 4 to perform reciprocating translation.

[0085] Preferably, the connecting hole 331 on the rotating rod 33 is a long hole, so that the position of the connecting shaft 341 on the connecting rod 34 on the connecting hole 331 can be adjusted according to usage to adjust the reciprocating distance of the grinding device 300, thereby adjusting the range of wire drawing processing and effectively adapting to different sizes of workpieces 100.

[0086] In this embodiment, if Fig.15 and Fig.16 As shown, a fixing protrusion 332 is provided on the other end of the rotating rod 33 away from the connection with the connecting rod 34, and a through hole 333 is provided in the fixing protrusion 332, and a fixing groove 334 is provided in the through hole 333. In coordination, the second motor 32 is mounted on the top of the rotating rod 33 through the mounting frame 31, and a stop pin 321 is installed on the output shaft of the second motor 32. The output shaft of the second motor 32 passes through the mounting frame 31 and is inserted into the through hole 333 of the fixing protrusion 332, so that the stop pin 321 is buckled on the fixing groove 334. When the output shaft of the second motor 32 rotates, the entire rotating rod 33 will be synchronously driven to rotate and swing.

[0087] Compared with the structure in the related art that the output shaft of the second motor 32 is switched to rotate forward or reverse to drive the grinding mechanism 2 to reciprocate, the switching of the motor in the related art to rotate forward or reverse will cause the reciprocating motion to stop, affecting the continuity of the processing operation. The entire driving mechanism 3 of the embodiment of the present application is similar to the eccentric transmission mechanism that drives the wheels on a train to rotate. The output shaft of the second motor 32 is rotated unidirectionally to drive the rotating rod 33 and the connecting rod 34 to move, thereby driving the entire grinding mechanism 2 to reciprocate, effectively improving the continuity of the grinding mechanism 2 being driven to reciprocate, which is conducive to saving occupied space and ensuring the operation stability of the entire grinding device 300.

[0088] Preferably, if Fig.15 As shown, the grinding device 300 is also provided with a pair of parallel rails 35, and the pair of parallel rails 35 are both extended in the same direction and parallel to the connecting rod 34. The bracket 4 is provided with a connecting foot 47 for mounting on the pair of parallel rails 35.

[0089] In this embodiment, the pair of parallel rails 35 are respectively arranged on both sides of the driving mechanism 3, and the bottom of the bottom plate 41 of the bracket 4 is provided with connecting feet 47 at both ends. The bottom of the connecting feet 47 is provided with an embedding groove, and is installed on the rails 35 using the embedding groove.

[0090] In this way, by utilizing the guiding function of the parallel tracks, the grinding mechanism 2 can be translated along the length direction of the tracks when being driven to make reciprocating motion, thereby effectively improving the stability of the grinding mechanism 2 when being driven to make reciprocating motion.

[0091] For the operating end structure on the robot arm 200, in one embodiment of the present application, please refer to Fig.17 and Fig.18 The rotating head 1 is connected to the first clamping seat 11 . The first clamping seat 11 is provided with a first clamp 13 extending in the first direction F1 . The first mounting portion 111 is located on the extending end of the first clamp 13 .

[0092] The second clamping seat 12 is connected to one side of the first clamping seat 11 . A second clamp 14 extending in a second direction F2 is disposed on the second clamping seat 12 . The first direction F1 is perpendicular to the second direction F2 . The second mounting portion 121 is located on the extending end of the second clamp 14 .

[0093] As an example, Fig.17 As shown, in a static state, the first clamp 13 on the first clamp seat 11 is vertically arranged, and the bottom of the first clamp 13 is the first mounting portion 111. The second clamp 14 on the second clamp seat 12 is horizontally arranged, and the end of the second clamp 14 facing the first clamp 13 is the second mounting portion 121.

[0094] In actual operation, please refer to Figure 4 and Fig.17 In the initial state, the first mounting portion 111 on the first clamping seat 11 is arranged downward, so that when the first mounting portion 111 reaches the first processing position 25 on the grinding device 300, the convex surface 101 of the workpiece 100 is pressed against the abrasive belt 21 for grinding. When switching the processing position, please refer to Figure 7 and Fig.17 After the rotating head 1 drives the first clamping seat 11 to rotate 180 degrees, the second clamping seat 12 on one side of the first clamping seat 11 is transferred to the other side. At this time, the second mounting portion 121 on the second fixture 14 is just facing the second processing position 26 on the grinding device 300, and the concave surface 102 on the workpiece 100 is pressed against the abrasive belt portion on the second roller 222 for grinding.

[0095] Thus, by utilizing the rotating head 1 on the operating end of the robot arm 200 to perform forward or reverse rotational motion, the workpiece 100 can be quickly switched between two processing positions of the grinding device 300, effectively saving the clamping time of the workpiece 100 and thereby improving the processing efficiency.

[0096] For the installation structure of the fixture on the clamping seat, in one embodiment of the present application, please refer to Fig.17 The first clamp 13 and the second clamp 14 are both provided with mounting holes (not shown in the figure), and the first clamping seat 11 and the second clamping seat 12 are both provided with screw holes (not shown in the figure) corresponding to the positions of the mounting holes, so that fasteners 15 such as screws can be installed to pass through the mounting holes and the screw holes, and the clamps can be fixed on the clamping seats.

[0097] In this way, there is no need to remove the workpiece 100 from the fixture. The position of the workpiece 100 can be quickly changed by directly disassembling and assembling the fixture, avoiding frequent clamping operations on the workpiece 100 that may cause easy damage to the workpiece 100, thereby improving the protection effect of the workpiece 100.

[0098] like Figure 1 and Figure 2 As shown, since the workpiece 100 is a tiny product and the workpiece 100 is a structure formed by bending a metal strip, and the workpiece 100 has a through hole formed by the metal strip, it is difficult to fix it by setting a clamping structure on the periphery. The clamping structure set on the periphery is easy to cause interference when grinding the workpiece 100, resulting in that part of the machined surface on the workpiece 100 cannot be ground in place, affecting the processing effect and yield rate.

[0099] Here, the clamping structure on the clamp is improved. In one embodiment of the present application, please refer to Fig.18 The first clamp 13 and the second clamp 14 each include at least one set of clamping blocks 16 and an adjusting screw 17, with gaps 161 between the clamping blocks 16. The set of clamping blocks 16 is used to penetrate into the through hole of the workpiece 100 and fix the workpiece 100 from the inside with tension. The adjusting screw 17 is used to tighten the gap 161 so that the set of clamping blocks 16 are close to each other so as to remove the workpiece 100.

[0100] It can be understood here that the sum of the lengths of a set of clamps 16 and the gap 161 is not less than the diameter of the through hole on the workpiece 100, so that the set of clamps 16 can press the workpiece 100 in the through hole of the workpiece 100, and fix the workpiece 100 from the inside of the workpiece 100. When the adjustment screw 17 is operated to bring the set of clamps 16 closer together, the tension of the set of clamps 16 on the workpiece 100 is released, so that the workpiece 100 can be easily removed from the fixture.

[0101] In this way, a group of clamping blocks 16 on the fixture are used to fix the workpiece 100 from the inside of the workpiece 100, avoiding the need to set a clamping mechanism on the periphery of the workpiece 100, which is beneficial to improving the fit between the machined surface of the workpiece 100 and the abrasive belt 21, allowing the entire machined surface on the workpiece 100 to be machined in place, thereby improving the yield rate of the workpiece 100.

[0102] In the actual processing, a spraying device (not shown) is required to spray water on the processing position on the grinding device 300 to cool the workpiece 100 being ground, so as to avoid the high temperature generated during grinding causing the workpiece 100 to be easily deformed and affect the processing quality.

[0103] To this end, in one embodiment of the present application, see Figure 3The concave-convex surface polishing wire drawing device of the embodiment of the present application further includes a water collecting tank 400, and the grinding device 300 is arranged in the water collecting tank 400. The robot arm 200 is arranged outside the water collecting tank 400 and can transfer the workpiece 100 to the grinding device 300.

[0104] In this way, the water collecting tank 400 is used to collect the water sprayed on the processing position when the grinding device 300 is working, so as to effectively ensure the cleanliness and hygiene of the processing environment.

[0105] Preferably, a water circulation system may be provided on the water collecting tank 400 and the spraying equipment to recycle the water, thereby saving energy and protecting the environment.

[0106] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A concave-convex surface polishing wire drawing equipment, characterized in that: include: A grinding device, comprising a grinding mechanism and a driving mechanism, wherein the driving mechanism is used to drive the grinding mechanism to perform reciprocating translational motion so that a linear texture is formed on the surface of the workpiece being ground; The grinding mechanism comprises a sanding belt, a roller group, a first motor and a support plate, wherein the sanding belt is sleeved on the roller group; the first motor is used to drive the roller group to drive the sanding belt to operate; The roller group includes at least a first roller and a second roller, the support plate is arranged between the first roller and the second roller, and the abrasive belt portion located above the support plate is arranged as a first processing position for processing a convex surface of a workpiece; the outer peripheral profile of the second roller matches the concave surface of the workpiece, and the abrasive belt portion on the second roller is arranged as a second processing position for processing a concave surface of the workpiece; A robotic arm, wherein a rotating head is provided on the operating end of the robotic arm, and a first clamping seat and a second clamping seat for respectively mounting workpieces are provided on the rotating head, wherein the first clamping seat has a first mounting portion for exposing a convex surface of the workpiece, and the second clamping seat has a second mounting portion for exposing a concave surface of the workpiece; the rotating head can rotate forward and reversely to drive the first mounting portion to move to the first processing position, or move the second mounting portion to the second processing position.

2. The concave-convex surface polishing wire drawing equipment according to claim 1, characterized in that: The grinding mechanism includes a bracket, and the bracket includes a base plate and a support plate erected on the base plate. The first motor is arranged on the bracket; the first roller and the second roller are both arranged on the support plate and are arranged at the same height, so that the sanding belt portion between the first roller and the second roller is a flat surface, and the support plate is located below the flat surface and supports the flat surface.

3. The concave-convex surface polishing wire drawing equipment according to claim 2, characterized in that: The bracket also includes a lifting mechanism for adjusting the height of the pallet, and the lifting mechanism includes a vertical plate and a connecting plate. The vertical plate is arranged on the bottom plate, and a driver and a slide rail are provided on the vertical plate; the pallet is installed and connected to the slide rail on the vertical plate through the connecting plate; the output end of the driver is connected to the connecting plate, and drives the connecting plate along the slide rail to drive the pallet to move up and down.

4. The concave-convex surface polishing wire drawing equipment according to claim 2, characterized in that: The first roller in the roller group is connected to the output end of the first motor, and the second roller is detachably disposed on the support plate.

5. The concave-convex surface polishing wire drawing equipment according to claim 2, characterized in that: The roller group also includes a first pressing roller and a second pressing roller arranged on the support plate, the first pressing roller is located below the second pressing roller and is staggered with the second pressing roller in an up-and-down manner; the second pressing roller is arranged close to the first roller, and the setting height of the second pressing roller is located between the second pressing roller and the first pressing roller; at least part of the abrasive belt is wound around the first pressing roller and the second pressing roller.

6. The concave-convex surface polishing wire drawing equipment according to claim 2, characterized in that: The driving mechanism includes a mounting frame, a second motor, a rotating rod and a connecting rod. The rotating rod is provided with a connecting hole. One end of the connecting rod is arranged in the connecting hole of the rotating rod through a connecting shaft, and the other end of the connecting rod is connected to the bottom plate of the bracket through a rotating shaft. The output shaft of the second motor is connected to the rotating rod, and the second motor is used to drive the rotating rod to rotate unidirectionally, so that the connecting rod drives the bracket to reciprocate.

7. The concave-convex surface polishing wire drawing equipment according to claim 6, characterized in that: The grinding device is also provided with a pair of parallel tracks, and the pair of parallel tracks are both extended in parallel with the connecting rod in the same direction; the bracket is provided with connecting feet for being installed on the pair of parallel tracks.

8. The concave-convex surface polishing wire drawing equipment according to claim 1, characterized in that: The rotating head is connected to the first clamping seat, the first clamping seat is provided with a first clamp extending in a first direction, and the first mounting portion is located on an extending end of the first clamp; The second clamping seat is connected to one side of the first clamping seat. The second clamping seat is provided with a second clamp extending in a second direction. The first direction is perpendicular to the second direction. The second mounting portion is located on the extending end of the second clamp.

9. The concave-convex surface polishing wire drawing equipment according to claim 8, characterized in that: The workpiece has a through hole; the first clamp and the second clamp each include at least one set of clamps and adjusting screws, with gaps between the clamps, and the set of clamps is used to penetrate into the through hole of the workpiece and fix the workpiece from the inside with tension; the adjusting screw is used to tighten the gap so that the set of clamps are brought closer to each other to remove the workpiece.

10. The concave-convex surface polishing wire drawing equipment according to any one of claims 1 to 9, characterized in that: The concave-convex surface polishing wire drawing equipment also includes a water collecting tank, and the grinding device is arranged in the water collecting tank; the mechanical arm is arranged outside the water collecting tank and can transfer the workpiece to the grinding device.

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