Grinding device

Abstract

The invention relates to a coping device, and belongs to the field of trimming devices. A sharpening device comprises a workbench and a guide seat movably locked on the workbench, the guide seat is provided with an avoiding structure used for avoiding a sharpening knife, and then the distance between the guide seat and a sharpening knife penetrating hole can be adjusted; the distance between the guide face of the guide seat and the sharpening knife can be adjusted, the relative distance between the edge, abutting against the guide seat, of the to-be-sharpened piece and the edge, needing to be sharpened, of the sharpening knife can be changed, and the edges, at other positions, of the to-be-sharpened piece can be sharpened conveniently. Therefore, the problems that in the prior art, due to the fact that a guide base is fixedly arranged on a workbench, the distance between the guide base and a sharpening knife on the workbench cannot be adjusted, the positions except the edge of the part to be sharpened cannot be sharpened, and the precision cannot be adjusted due to the fact that machining can only be conducted with the fixed sharpening amount are solved.

Description

Technical Field

[0001] The invention relates to a grinding device and belongs to the field of trimming devices. Background Art

[0002] Transformers are important equipment in power equipment, among which oil-immersed transformers can achieve good insulation. In the production process of oil-immersed transformers, insulating parts are needed to separate adjacent parts that need to be insulated. Usually, these insulating parts are made of special cardboard. In the production process, especially the cutting process, burrs and sharp corners will inevitably appear on the insulating cardboard. The transformer is a high-voltage environment. These burrs and sharp corners will cause tip discharge. Therefore, in the production process of insulating parts, it is also necessary to repair the edges to remove excess burrs and sharp corners.

[0003] For trimming the edge of a component, there are trimming tools for trimming wooden boards and other boards in the prior art. For example, a Chinese utility model patent with an authorization announcement date of May 28, 2024 and an authorization announcement number of CN221021425U discloses a trimming device for interior decoration decorative boards, which includes a workbench and a baffle plate arranged on the workbench surface, the baffle plate includes a straight plate section and an avoidance groove located between the two straight plate sections, and a trimming knife (i.e., a grinding knife) is also arranged on the workbench surface at the avoidance groove, and a trimming knife perforation (i.e., a grinding knife perforation) for the trimming knife to pass through is arranged on the workbench, and part of the blade of the trimming knife protrudes from the baffle plate. In addition, a limiting structure that can slide along the workbench surface to clamp the workpiece to be polished is also arranged on the workbench, and the workpiece to be polished is clamped between the baffle plate and the limiting structure, and the edge to be polished is made to fit with the board surface of the baffle plate. When the workpiece to be polished is moved, the trimming knife can polish the edge of the workpiece to be polished to complete the trimming.

[0004] However, in the above technical solution, the positions of the baffle and the trimming knife are relatively fixed. When trimming, only the outermost edges can be ground. In the insulating parts, there are also cases where there is a hole in the center and the edge of the inner hole needs to be ground. For such parts, existing grinding tools cannot perform grinding. In addition, in the above technical solution, the distance between the grinding knife and the guide surface of the baffle (i.e., the guide seat) is constant, which means that when the part to be ground moves on the guide seat, the grinding amount is fixed each time, and the grinding accuracy is positively correlated with the grinding amount, and the grinding accuracy cannot be controlled and adjusted. In the electrical field, for the processing of insulating parts in high-voltage environments, in order to ensure their high insulation, it is necessary to ensure the grinding effect of the edges, which requires that the grinding amount can be adjusted according to the processing requirements, but the above solution cannot achieve this goal. Summary of the invention

[0005] The object of the present invention is to provide a grinding device for solving the problems in the prior art that a guide seat is fixedly arranged on a workbench, resulting in the inability to adjust the distance between the guide seat and the grinding knife on the workbench, thereby resulting in the inability to grind areas other than the edge of the workpiece to be grinded, and the inability to adjust the accuracy because processing can only be performed with a fixed grinding amount.

[0006] In order to achieve the above-mentioned purpose, the grinding device in the present invention adopts the following technical scheme: A grinding device comprises a workbench, wherein a guide seat and a grinding knife through-hole for a grinding knife to pass through the workbench are arranged on the workbench surface, a avoidance structure for avoiding the grinding knife is arranged on the guide seat, and a guide surface for fitting with the edge of a workpiece to be ground so as to guide the workpiece to be ground is also arranged on the guide seat, wherein the guide seat is movably locked on the workbench and the moving direction of the guide seat is the same as the extending direction of the normal of the guide surface, so that the grinding knife partially located in the avoidance structure protrudes beyond the preset dimension of the guide surface, thereby grinding the outer edge of the workpiece to be ground, or the grinding knife maintains a preset interval with the avoidance structure and the guide surface, thereby grinding the inner hole edge of the workpiece to be ground.

[0007] Furthermore, the guide seat includes a guide seat body and two slides movably locked on the guide seat body. The avoidance structure is arranged on the guide seat body. The side of the slide facing the workpiece to be repaired constitutes the guide surface. The two slides can be relatively close to or away from each other in the guiding direction of the guide surface.

[0008] Furthermore, a horizontally extending first guide groove is provided on the guide seat body, and the guide seat also includes a first adjusting screw for connecting the guide seat body and the skateboard, the first adjusting screw passes through the first guide groove and is threadedly connected to the skateboard, and the screw rod of the first adjusting screw does not protrude from the guide surface of the skateboard, or the first adjusting screw passes through the skateboard and the first guide groove in sequence and is connected to the nut, and the screw hole on the skateboard is a countersunk hole.

[0009] Furthermore, a baffle plate is provided on the side of the guide seat facing away from the guide surface, the space enclosed by the baffle plate constitutes the avoidance structure, and a knife groove for the grinding knife to pass through is also provided on the baffle plate.

[0010] Furthermore, the workbench is also provided with a pushing structure for pushing the workpiece to be repaired to move along the guide surface.

[0011] Furthermore, the workbench is provided with a slide groove extending along the guiding direction of the guide surface, and the pushing structure includes a slide seat matched with the guide of the slide groove and a pushing base arranged above the slide seat for contacting the workpiece to be repaired.

[0012] Furthermore, the pushing base and the slide can be rotatably assembled together, the pushing base is provided with an arc guide groove, the center of the arc guide groove is located on the rotation axis of the pushing base relative to the slide, and the slide and the pushing base are fixedly connected by a detachable fastener passing through the arc guide groove.

[0013] Furthermore, a guide rail extending along the normal direction of the guide surface is arranged on the workbench, a lockable guide block is arranged on the guide rail, and the guide seat is fixed on the lockable guide block.

[0014] Furthermore, two guide rails are provided and are respectively located on both sides of the guide seat, and guide rail mounting plates are respectively provided on the edges of both sides of the workbench, and a guide rail is fixedly provided on each guide rail mounting plate.

[0015] Furthermore, the grinding device also includes a mounting plate that is detachably connected to the workbench and arranged flush with the workbench, the grinding knife is perforated and arranged on the mounting plate, the plate surface of the mounting plate constitutes a part of the table surface of the workbench, and the bottom of the mounting plate is provided with a mounting structure for detachably installing the trimmer.

[0016] The beneficial effect of the grinding device in the present invention is that the present invention belongs to the invention of element change, and the position of the guide seat relative to the workbench can be adjusted by changing the connection relationship between the guide seat and the workbench. Since the workbench is provided with a fixed grinding knife through-hole for the grinding knife to pass through and the moving direction of the guide seat is perpendicular to the guide surface, when the guide seat moves relative to the workbench, the positions of the corresponding guide seat and the grinding knife through-hole also change, thereby adjusting the distance between the grinding knife and the guide seat, and then the distance between the grinding knife and the guide surface on the guide seat can be adjusted. Since the guide seat is provided with an avoidance structure, the distance of the grinding knife can be adjusted until the grinding knife and the guide surface of the guide seat overlap each other to facilitate the grinding of the outer edge of the workpiece to be ground; the grinding knife and the guide surface can also maintain a preset interval to facilitate the grinding of the inner hole edge of the workpiece to be ground; of course, during the movement, the size of the grinding knife protruding from the guide surface can also be adjusted to adjust the grinding amount, thereby solving the problem in the prior art that the guide seat is fixedly set on the workbench, resulting in the inability to adjust the distance between the guide seat and the grinding knife on the workbench, thereby resulting in the inability to grind places other than the edge of the workpiece to be ground, and the accuracy cannot be adjusted because the processing can only be performed with a fixed grinding amount. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an embodiment of a grinding device in the present invention; Figure 2 It is a structural schematic diagram of a guide seat of an embodiment of a grinding device in the present invention; Figure 3A schematic structural diagram of a guide seat of an embodiment of a grinding device in the present invention from another perspective; Figure 4 A schematic diagram of the structure of a guide rail of an embodiment of a grinding device in the present invention; Figure 5 It is a structural schematic diagram of a driving structure of an embodiment of a grinding device in the present invention; Figure 6 It is a schematic structural diagram of a mounting plate of an embodiment of a grinding device in the present invention.

[0018] In the figure: 1, workbench; 11, mounting plate; 111, grinding knife perforation; 12, slide groove; 21, guide rail; 22, lockable guide block; 31, guide plate; 311, first guide groove; 32, avoidance structure; 321, side plate; 322, bottom plate; 33, knife groove; 34, slide plate; 35, first adjusting screw; 36, connecting plate; 41, slide seat; 42, pushing base; 421, base plate; 422, push plate; 43, push plate; 44, second fastener; 45, arc guide groove; 46, second adjusting screw; 47, second guide groove. DETAILED DESCRIPTION

[0019] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0020] The grinding device in the present invention is provided with a guide seat capable of guiding the workpiece to be ground, and the guide seat is movably locked and arranged on the workbench, so that the distance between the guide seat and the grinding knife perforation can be adjusted. After the grinding knife is installed at the grinding knife perforation, the distance between the guide surface of the guide seat and the grinding knife can be adjusted. Then, the relative distance between the edge of the workpiece to be ground that leans against the guide seat and the edge to be ground by the grinding knife will change, so that it is convenient to grind the edges at other positions on the workpiece to be ground.

[0021] In the embodiment of the grinding device of the present invention: like Figure 1 and Figure 6As shown, the grinding device in this embodiment includes a workbench 1, which has a flat table surface for placing the workpiece to be ground. A grinding knife that can trim the edge of the workpiece to be ground needs to be set on the table surface of the workbench 1, so the workbench 1 is also provided with a mounting plate 11, which is detachably connected to the workbench 1, and a grinding knife through hole 111 for the grinding knife to pass through is set on the mounting plate 11, and the upward plate surface of the mounting plate 11 also constitutes a part of the workbench 1. Bolt holes for mounting a trimmer are set on the mounting plate 11. When in use, the trimmer is turned upside down on the workbench 1, so that the trimmer of the trimmer passes through the grinding knife through hole 111 on the mounting plate 11 upward, and the main body of the trimmer is located below the mounting plate 11. In order to correspond to different grinding knives or trimmers, the mounting plate 11 is detachably assembled on the workbench 1 through threaded fasteners, which is convenient for adapting to more models of trimmers. Of course, in other embodiments, the mounting plate can also be fixed on the workbench, in which case the mounting plate cannot be replaced, and in order to accommodate more trimmers, more bolt holes can be provided on the mounting plate. Alternatively, in other embodiments, no trimmer is provided, but a separate sharpening knife assembly is provided.

[0022] like Figure 1 , Figure 2 and Figure 3 As shown, after the grinding knife is installed on the mounting plate 11, in order to perform a better grinding operation, a guide seat is also provided on the workbench 1, and a guide surface for the workpiece to be ground is formed on the guide seat. In order to achieve grinding of different positions of the workpiece to be ground, the guide seat is movably fixed on the workbench 1 and the moving direction of the guide seat is perpendicular to the guide surface, so that the distance between the guide seat and the grinding knife perforation 111 and the grinding knife can be achieved. At this time, the edge of the workpiece to be ground is guided on the guide seat, and the edge to be ground of the workpiece to be ground can be ground in cooperation with the grinding knife. At the same time, the size relationship between the guide surface of the guide seat and the grinding knife can be changed to change the feed amount.

[0023] In order to take into account both the adjustment function of the guide seat relative to the workbench 1 and the guiding function for the workpiece to be repaired, the guide seat needs to be fixed relative to the workbench 1 to facilitate the guidance of the workpiece to be repaired; it can also be guided relative to the workbench 1 to adjust the distance between the guide seat and the grinding knife perforation 111. Specifically, the workbench 1 has two edges that are opposite, parallel, and perpendicular to the guide surface, on which a guide rail mounting plate is fixedly arranged. The upper end surface of the guide rail mounting plate is flush with the table surface of the workbench 1 and protrudes downward from the workbench 1 to avoid interference between the upper end and the guide seat. A guide rail 21 is fixedly arranged on each guide rail mounting plate, such as Figure 4As shown, a lockable guide block 22 is also guided and assembled on the guide rail 21. The lockable guide block 22 has a mobile state of guiding and moving relative to the guide rail 21 and a fixed state of being relatively fixed relative to the guide rail 21. The guide seat includes a guide seat body and a connecting plate 36 fixedly arranged on the guide seat body and extending downward. The connecting plate 36 has two and is respectively located at both ends of the guide seat. The connecting plate 36 is fixedly arranged on the lockable guide block 22. When the lockable guide block 22 is in a mobile state relative to the guide rail 21, the guide seat is in an active state accordingly. When the lockable guide block 22 is fixed relative to the guide rail 21, the guide seat is also in a fixed state. By switching between these two states, it is convenient to adjust the position of the edge to be repaired of the workpiece to be repaired. It is worth noting that the guide rail 21 and the lockable guide block 22 in this embodiment are existing technologies, and mature products on the market can be directly purchased, such as built-in dual-axis linear guides. The stepless adjustment of the guide seat can be achieved through the matching form of the track and the lockable slider, and the adjustment range is larger and the accuracy is higher.

[0024] Of course, in other embodiments, two grooves arranged in parallel may be provided on the workbench, and the guide rails may be arranged in the grooves. In this case, the guide rails are no longer arranged on opposite sides of the workbench. Alternatively, in other embodiments, the number of guide rails may also be adjusted, and the number of guide rails may be set to three or one. Alternatively, in other embodiments, a slide groove may be provided, and the lockable guide block may cooperate with the slide groove through a top screw to facilitate the switching of the two modes of the guide seat. Alternatively, in other embodiments, a connecting plate may no longer be provided, and the lockable guide block and the guide seat may be directly fixed together by bolts. Alternatively, in other embodiments, a track may no longer be provided, and a plurality of fastening holes may be arranged at intervals on the track mounting plate, and the connecting plate may be moved to different positions and then fastened with bolts.

[0025] The guide seat in this embodiment can realize the grinding of the outermost edge of the workpiece to be polished and the grinding of the inner side edge of the workpiece to be polished. Therefore, the guide seat includes a guide plate 31 arranged perpendicular to the moving direction of the guide seat. The guide plates 31 have two, and the two guide plates 31 are arranged at intervals. A avoidance structure 32 for avoiding the grinding knife is also arranged between the two guide plates 31. The plate surfaces of the two guide plates 31 are spaced from each other, which is convenient for grinding the edge of the workpiece to be polished. At this time, the edge of the workpiece to be polished can be placed against the guide seat. The grinding knife slightly protrudes from the guide surface of the guide seat. When the workpiece to be polished moves along the guide seat, the edge of the workpiece to be polished will contact the grinding knife, thereby completing the grinding of the edge of the workpiece to be polished. The avoidance structure 32 includes two side plates 321 perpendicular to the guide plate 31 and a bottom plate 322 arranged parallel to the guide plate 31. The two side plates 321 and the bottom plate 322 surround the grinding knife to form a avoidance groove for avoiding the grinding knife, and also constitute a fence structure for surrounding the blade of the grinding knife to protect the operator. Since the guide seat can move along the workbench 1, in order to avoid the collision between the guide seat and the grinding knife during the movement, a knife groove 33 for the grinding knife to pass through is also provided on the bottom plate 322 of the avoidance groove. The height and width of the knife groove 33 are greater than the size of the grinding knife, so as to facilitate the grinding knife to pass through. Of course, in other embodiments, the avoidance groove may not be provided, and only the knife groove may be provided, or, in other embodiments, only the avoidance groove may be provided, and the knife groove may not be provided, and the spacing between the guide seat and the grinding knife is always maintained during the movement of the guide seat.

[0026] When the middle part of the workpiece to be repaired needs to be repaired, the workpiece to be repaired needs to cross the avoidance groove when being guided along the guide seat. When the workpiece to be repaired is small, one end of the workpiece may fall into the avoidance groove and rotate when crossing the avoidance groove on the guide seat. Therefore, a slide plate 34 is also provided on the guide seat. The slide plate 34 is arranged one-to-one with the guide plate 31. The guide plate 31 is provided with a first guide groove 311 extending in the horizontal direction. The slide plate 34 is threadedly connected with a first adjusting screw 35. The screw rod of the first adjusting screw 35 passes through the first guide groove 311. When the first adjusting screw 35 is tightened, the screw head abuts against the guide plate 31 to fix the slide plate 34 relative to the guide plate 31. Through the adjustment of the first adjusting screw 35, the position of the slide plate 34 relative to the guide plate 31 can be changed, and finally the two slide plates 34 can be relatively assembled together, which is convenient for sliding the workpiece to be repaired on the guide seat. Of course, in other embodiments, the first guide groove may not be provided on the guide plate, but a plurality of screw mounting holes arranged at intervals may be provided, and the position of the slide plate may be adjusted by providing the screw mounting holes. Alternatively, in other embodiments, the slide plate may not be provided, in which case the avoidance groove cannot be covered, and only larger-sized parts to be repaired can be processed. Alternatively, in other embodiments, a countersunk hole may be provided on the slide plate, and the screw head of the first adjusting screw may be accommodated in the countersunk hole. A nut threadedly assembled with the first adjusting screw may be provided on the side of the guide plate away from the slide plate, and the slide plate may be installed on the guide plate through the nut.

[0027] like Figure 1 and Figure 5 As shown, when the size of the workpiece to be repaired is small, if the workpiece to be repaired is pushed by hand, the hand may be cut by the blade, resulting in injury to the staff, so a pushing structure for pushing the workpiece to be repaired to move along the guide direction of the guide seat to the workpiece to be repaired is also provided on the workbench 1. Specifically, a slide groove 12 is provided on the workbench 1, and a slide seat 41 matching the slide groove 12 is provided on the pushing structure, and the slide seat 41 is guided and set in the slide groove 12, so as to realize the guided movement of the pushing structure relative to the workbench 1. Of course, in other embodiments, if the movement of the pushing structure relative to the workbench is to be realized, a guide bar with a certain length can also be provided on the workbench, and a groove can be provided on the pushing structure.

[0028] The pushing structure also includes a pushing base 42 disposed above the slide 41. The pushing base 42 includes a base plate 421 and a push plate 43 which are arranged vertically to each other. The base plate 421 contacts the slide 41 and is arranged horizontally, and the push plate 43 is arranged vertically. The base plate 421 is hingedly connected with the slide 41 by bolts, so that the base plate 421 can rotate around the rotation axis of the slide 41. A second fastener 44 is also provided on the slide 41. The second fastener is a bolt and a nut adapted to the bolt. The bolt in the second fastener 44 is installed on the slide 41, and the screw head of the second fastener 44 is located on the side of the base plate 421 away from the guide rod. When the second fastener 44 is tightened, the second fastener 44 can press the base plate 421 and the slide 41. An arc-shaped guide groove 45 is provided on the base plate 421, and the arc-shaped guide groove 45 is arranged around the hinge axis of the base plate 421 and the slide seat 41. The second fastener 44 cooperates with the arc-shaped guide groove 45 to fix the base plate 421 at a corresponding position, so that the push base 42 can be rotatably arranged relative to the slide seat 41. Of course, in other embodiments, the arc-shaped guide groove may no longer be provided, but a plurality of bolt mounting holes evenly spaced around the hinge axis of the push base and the slide seat may be provided. When in use, the second fastener is screwed at different positions to achieve the adjustment of the two.

[0029] A push plate 43 is also provided on the push plate 43, which can be guided relative to the push plate 43, and the push plate 43 is used to directly contact the workpiece to be repaired. A second guide groove 47 extending horizontally is provided on the push plate 43, and a second adjustment screw 46 is provided on the push plate 43. The second adjustment screw 46 is installed on the push plate 43 and passes through the second guide groove 47. When the second adjustment screw 46 is tightened, the second adjustment screw 46 presses the push plates 43 and the push plates 43 together to achieve a fixed connection. When the second adjustment screw 46 is loosened, the push plates 43 and the push plates 43 can move relative to each other along the second guide groove 47. By setting such a structure, it is convenient to adjust the position of the push plate 43, and it is convenient to set the push plate 43 toward the guide seat. After the guide seat moves, the push plate 43 can always be attached to the periphery of the guide seat, which is convenient for repairing small-sized workpieces to be repaired.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims

1. A grinding device, characterized in that: The invention comprises a workbench, on the surface of which a guide seat and a grinding knife through-hole for a grinding knife to pass through the workbench are arranged, a avoidance structure for avoiding the grinding knife is arranged on the guide seat, and a guide surface for fitting with the edge of a workpiece to be ground so as to guide the workpiece to be ground is also arranged on the guide seat, the guide seat is movably locked on the workbench and the moving direction of the guide seat is the same as the extending direction of the normal of the guide surface, so that the grinding knife partially located in the avoidance structure protrudes beyond the preset dimension of the guide surface, thereby grinding the outer edge of the workpiece to be ground, or the grinding knife maintains a preset interval with the avoidance structure and the guide surface, thereby grinding the inner hole edge of the workpiece to be ground.

2. The grinding device according to claim 1, characterized in that: The guide seat includes a guide seat body and two slide plates movably locked on the guide seat body. The avoidance structure is arranged on the guide seat body. The side of the slide plate facing the workpiece to be repaired constitutes the guide surface. The two slide plates can be relatively close to or away from each other in the guiding direction of the guide surface.

3. The grinding device according to claim 2, characterized in that: The guide seat body is provided with a first guide groove extending horizontally, and the guide seat also includes a first adjusting screw for connecting the guide seat body and the slide plate, the first adjusting screw passes through the first guide groove and is threadedly connected to the slide plate, and the screw rod of the first adjusting screw does not protrude from the guide surface of the slide plate, or the first adjusting screw passes through the slide plate and the first guide groove in sequence and is connected to a nut, and the screw through-hole on the slide plate is a countersunk hole.

4. The grinding device according to any one of claims 1 to 3, characterized in that: A baffle plate is arranged on one side of the guide seat facing away from the guide surface, and the space enclosed by the baffle plate constitutes the avoidance structure. The baffle plate is also provided with a knife groove for the grinding knife to pass through.

5. The grinding device according to any one of claims 1 to 3, characterized in that: The workbench is also provided with a pushing structure for pushing the workpiece to be repaired to move along the guide surface.

6. The grinding device according to claim 5, characterized in that: The workbench is provided with a slide groove extending along the guiding direction of the guide surface, and the pushing structure comprises a slide seat matched with the slide groove guide and a pushing base arranged above the slide seat for contacting the workpiece to be repaired.

7. The grinding device according to claim 6, characterized in that: The pushing base and the slide can be rotatably assembled together. The pushing base is provided with an arc guide groove. The center of the arc guide groove is located on the rotation axis of the pushing base relative to the slide. The slide and the pushing base are fixedly connected by a detachable fastener passing through the arc guide groove.

8. The grinding device according to any one of claims 1 to 3, characterized in that: The workbench is provided with a guide rail extending along the normal direction of the guide surface, a lockable guide block is provided on the guide rail, and the guide seat is fixed on the lockable guide block.

9. The grinding device according to claim 8, characterized in that: Two guide rails are provided and are respectively located on both sides of the guide seat, and guide rail mounting plates are respectively provided on the edges of both sides of the workbench, and a guide rail is fixedly provided on each guide rail mounting plate.

10. The grinding device according to any one of claims 1 to 3, characterized in that: The grinding device also includes a mounting plate that is detachably connected to the workbench and arranged flush with the workbench. The grinding knife is perforated and arranged on the mounting plate. The surface of the mounting plate constitutes a part of the workbench surface. The bottom of the mounting plate is provided with a mounting structure for detachably installing the trimmer.

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