CN108000292B - Special-shaped sander - Google Patents

Abstract

The invention relates to the field of woodworking machinery and discloses a special-shaped sander, which comprises a main motor, a synchronous toothed belt, an annular rack, a driving mechanism, a plurality of grinding wheels and sand racks corresponding to the grinding wheels one by one; teeth are distributed on the inner side and the outer side of the synchronous toothed belt, and the synchronous toothed belt is in an annular shape matched with the shape of the annular rack; the main motor is oppositely arranged at the inner sides of two ends of the synchronous toothed belt, a first gear arranged on an output shaft of the main motor is meshed with the inner sides of the synchronous toothed belt, the synchronous toothed belt is arranged in the annular rack, windows are formed in two sides of the annular rack, a plurality of grinding wheels and sand racks are arranged on the annular rack and are oppositely arranged at the outer sides of the windows, the grinding wheels are meshed with the outer sides of the synchronous toothed belt through second gears, and a driving mechanism is connected with the upper ends of the sand racks and used for driving the sand racks to reciprocate above the corresponding windows of the annular rack. The invention can solve the problems of low sanding efficiency, numerous equipped motors, complex control system, uneven sanding and the like in the prior art.

Description

A special-shaped sanding machine

Technical field

The invention relates to the technical field of woodworking machinery, and in particular to a special-shaped sander.

Background technique

The sanding process belongs to the grinding field in wood cutting. It uses abrasive tools such as abrasive belts, sandpaper or grinding wheels instead of cutting tools to process the workpiece. The purpose is to remove surface materials, burrs, milling and other processing marks on the workpiece, so that the workpiece reaches a certain level. Thickness size or surface quality requirements. For example, the sanding of the paint surface of wood products requires extremely fine sanding, which is not only directly related to the quality of the final surface paint, but also affects the amount of expensive paint used. The sanding machine manufacturing industry is a finishing equipment manufacturing industry for furniture, wood products, building materials and decoration industries. Among wood processing machinery, special-shaped curved surface sanders are a very common type. They are suitable for fine sanding and primer sanding of surfaces such as wooden doors, wooden windows, musical instruments, and wooden crafts.

In terms of structure, most of the existing special-shaped sanding machines are workpiece-passing machines, using multiple sets of brush-type grinding wheels and equipped with multiple motors. While the grinding wheel rotates, the sand frame moves laterally. However, this form of special-shaped sanding machine has a large overall size and is not compact in structure. It is not suitable for special-shaped sanding of long and narrow workpiece surfaces. Moreover, if multiple grinding wheels are working at the same time, some of the grinding wheels will be idling, resulting in a waste of energy and limited sanding efficiency. Multiple sets of sand racks are equipped with a large number of motors, which increases the weight of the rack and requires higher requirements for rack materials and control. The system is more complex, which also increases the cost of the sander.

Contents of the invention

(1) Technical problems to be solved

The purpose of the present invention is to provide a special-shaped sanding machine to solve the problems of low sanding efficiency of the existing sanding machine, a large number of motors equipped with the sanding machine, and a complex control system.

(2) Technical solutions

In order to solve the above technical problems, embodiments of the present invention provide a special-shaped sander, which includes a main motor, a synchronous toothed belt, an annular frame, a driving mechanism, a plurality of grinding wheels and a sand frame corresponding to the grinding wheels;

Teeth are arranged on both inner and outer sides of the synchronous toothed belt, and the synchronous toothed belt is in an annular shape matching the shape of the annular frame;

The main motor is arranged relatively inside the two ends of the synchronous toothed belt. The output shaft of the main motor is connected with a first gear. The first gear meshes with the inside of the synchronous toothed belt. The synchronous toothed belt The toothed belt is adapted to be installed in the annular frame. There are windows on both sides of the annular frame. A plurality of grinding wheels are installed on the annular frame through the sand frame and are opposite to each other respectively. Located on the outside of the window, the grinding wheel meshes with the outside of the synchronous toothed belt through a second gear, and the driving mechanism is connected to the upper end of the sand frame for driving the sand frame along the annular shape. The linear guide rails on the corresponding windows of the rack make reciprocating motions.

In an embodiment of the present invention, the annular frame includes two straight line segments arranged in parallel and arc segments provided at both ends of the straight line segment for connecting the two straight line segments.

In an embodiment of the present invention, the window is provided in the straight line segment, and the length of the window matches the length of the straight line segment.

In the embodiment of the present invention, the driving mechanism is a driving cylinder, the telescopic end of the driving cylinder is connected to the upper end of the sand frame, and the fixed end of the driving cylinder is fixed on the arc section of the annular frame. .

In an embodiment of the present invention, the linear guide rails are respectively provided at the upper ends of the linear sections of the annular frame, and the sand frame can reciprocate on the linear slide rails.

In the embodiment of the present invention, there are two driving cylinders, and the two driving cylinders are arranged diagonally on both sides of the annular frame.

In the embodiment of the present invention, the grinding wheel is connected to the sand frame through a vertical grinding wheel shaft, and a bearing is provided at the connection between the grinding wheel shaft and the sand frame.

In an embodiment of the present invention, the second gear is provided on the grinding wheel shaft, and auxiliary positioning wheels are provided on the upper and lower sides of the grinding wheel shaft located on the second gear.

In an embodiment of the present invention, the sand frame includes a rectangular frame, the top and bottom of the rectangular frame are provided with extensions extending to the same side, and the grinding wheel shaft passes through the bottom and bottom of the rectangular frame sequentially from bottom to top. The top, and the extension part is slidably connected to the upper and lower sides of the annular frame.

In an embodiment of the present invention, a plurality of the grinding wheels and sand frames are evenly distributed on both sides of the length direction of the annular frame according to the size requirements of the sanding machine;

The teeth on the inner and outer sides of the synchronous toothed belt have the same shape and size;

The output shaft of the main motor is connected to the first gear through a coupling.

(3) Beneficial effects

Compared with the prior art, the present invention has the following advantages:

The invention provides a special-shaped sanding machine, which includes a main motor, a synchronous toothed belt, an annular frame, a plurality of grinding wheels and a sand frame corresponding to the grinding wheels; the inner and outer sides of the synchronous toothed belt Both are arranged with teeth, and the synchronous toothed belt is in an annular shape matching the shape of the annular frame; the main motor is relatively arranged inside the two ends of the synchronous toothed belt, and the output of the main motor The shaft is connected with a first gear, and the first gear meshes with the inner side of the synchronous toothed belt. The synchronous toothed belt is adaptively provided in the annular frame. Both sides of the annular frame A window is provided, and a plurality of grinding wheels are installed on the annular frame through the sand frame and are relatively located outside the window. The grinding wheels pass through the second gear and the double-sided synchronous toothed belt. Outer engagement. In the invention, two main motors drive the synchronous toothed belt to perform circular motion, and drive multiple grinding wheels to rotate at the same speed at the same time, thereby completing the fine grinding and polishing of the workpiece surface. Its structural form is more reasonable. It adopts synchronous toothed belt transmission so that multiple grinding wheels can realize synchronous rotation of the grinding wheels with only two main motors to complete the sanding work. The number of motors used is much less than that of traditional special-shaped sanding machines, saving money. The manufacturing cost of the sanding machine is reduced, the control system is simplified, and the operation is easier. At the same time, the load capacity of the ring frame is reduced, which is beneficial to ensuring the safety of the sander; it has a compact structure, high transmission efficiency, and lower power consumption than the traditional sanding section, and is suitable for sanding workpieces of various specifications. Features.

And the driving mechanism is connected to the upper end of the sand frame, and is used to drive the sand frame to reciprocate along the corresponding window of the annular frame, so that the sanding surface is wider and the sanding is more uniform.

Description of the drawings

Figure 1 is a three-dimensional schematic view of a special-shaped sanding machine according to an embodiment of the present invention;

Figure 2 is a front view of a special-shaped sander according to an embodiment of the present invention;

Figure 3 is a side view of a special-shaped sander according to an embodiment of the present invention;

Figure 4 is a top view of a special-shaped sander according to an embodiment of the present invention;

Figure 5 is a schematic diagram of the production line layout of a special-shaped sanding machine according to an embodiment of the present invention (the arrow indicates the workpiece feeding direction);

In the picture: 1: main motor; 2: first gear; 3: synchronous toothed belt; 31: teeth; 4: second gear; 5: sand frame; 51: rectangular frame; 6: grinding wheel; 7: grinding wheel shaft; 8: Ring frame; 81: Window; 9: Driving cylinder; 10: Linear guide rail; 11: Auxiliary positioning wheel.

Detailed ways

Specific implementations of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing and simplifying the present invention. The description does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore is not to be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. Connection, or integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood depending on the specific circumstances.

In the description of the present invention, it needs to be noted that the synchronous toothed belt used in the main drive is driven by two main motors. It is only based on the orientation and positional relationship shown in the drawings. It is only for the convenience of describing the present invention and is not an indication. Or it is implied that the component mentioned cannot have auxiliary components such as a tensioning mechanism; based on the diagram of the drawings, only a grinding wheel and a grinding frame structure are drawn, so this cannot be understood as a limitation of the present invention.

In addition, in the description of the present invention, unless otherwise specified, the meanings of “plurality”, “multiple roots” and “multiple groups” are two or more.

The embodiment of the present invention provides a special-shaped sander. Figure 1 shows a three-dimensional schematic diagram of the special-shaped sander, which includes a main motor 1, a synchronous toothed belt 3, an annular frame 8, a driving mechanism, and a plurality of grinding wheels 6 and a sand frame 5 corresponding to the grinding wheel 6;

Figure 4 shows a top view of the special-shaped sander. Teeth 31 are arranged on both the inner and outer sides of the synchronous toothed belt 3, such as rectangular teeth, trapezoidal teeth, triangular teeth, etc., and the teeth are arranged vertically, that is, the teeth 31 are arranged vertically. Arranged perpendicularly to the length direction of the synchronous toothed belt 3, the synchronous toothed belt 3 is in an annular shape matching the shape of the annular frame 8. In the embodiment of the present invention, the annular shape is an oblong;

As shown in Figure 1, the main motor 1 is arranged relatively inside the two ends of the synchronous toothed belt 3. The output shaft of the main motor 1 is connected to a first gear 2 through a coupling. The first gear 2 meshes with the inner side of the synchronous toothed belt 3. The synchronous toothed belt 3 is suitably installed in the annular frame 8 to form an inner and outer ring structure. There are openings on both sides of the annular frame 8. There is a window 81. A plurality of grinding wheels 6 are fixed on the annular frame 8 through the sand frame 5 and are relatively located outside the window 81. The grinding wheels 6 are synchronized with the grinding wheel through the second gear 4. The outer side of the toothed belt 3 meshes; when the main motor 1 rotates, the first gear 2 coaxially connected with it rotates synchronously, and drives the synchronous toothed belt 3 meshed with it to rotate, thereby driving the second gear 4 to rotate, and then driving the grinding wheel 6 Rotation, the driving mechanism is connected to the upper end of the sand frame 5, and is used to drive the sand frame 5 to reciprocate along the linear guide rail 10 above the corresponding window 81 of the annular frame 8, so that the grinding wheel 6 rotates reciprocating linear motion at appropriate speed. In the present invention, two main motors 1 drive the synchronous toothed belt 3 to perform circular motion, and drive multiple grinding wheels 6 to rotate at the same speed at the same time, thereby completing the fine grinding and sanding of the workpiece surface. Its structural form is more reasonable. It adopts synchronous toothed belt 3 for transmission, so that multiple grinding wheels 6 only need two main motors 1 to realize the synchronous rotation of the grinding wheels 6 to complete the sanding work. The number of motors used is compared with traditional special-shaped sanding machines. It is reduced a lot, saving the manufacturing cost of the sander, simplifying the control system and making it easier to operate. At the same time, the load capacity of the annular frame 8 is reduced, which is beneficial to ensuring the safety of the sanding machine; it has a compact structure, high transmission efficiency, and smaller power consumption than the traditional sanding section, and is suitable for sanding workpieces of various specifications. Light and other characteristics. And the grinding wheel 6 is driven by a driving mechanism to perform linear reciprocating motion. By arranging diagonally distributed driving mechanisms on both sides of the frame, the sanding of the workpiece surface is made more uniform.

In the embodiment of the present invention, the annular frame 8 includes two straight line segments arranged in parallel and arc segments provided at both ends of the straight line segment for connecting the two straight line segments, forming an oblong shape. Reasonably control the diameter of the arc segment to achieve a tight structure. The window 81 is provided in the straight line segment, and the length of the window 81 matches the length of the straight line segment. The grinding wheels 6 are arranged at intervals along the length direction of the window 81 .

In the embodiment of the present invention, the driving mechanism is preferably a driving cylinder 9. The telescopic end of the driving cylinder 9 is connected to the upper end of the sand frame 5. The fixed end of the driving cylinder 9 is fixedly mounted on the annular frame 8. arc segment, and the axis of the driving cylinder 9 is arranged along a straight line segment.

In order to facilitate the sliding of the sand frame 5, linear guide rails 10 are respectively provided at the upper ends of the straight sections of the annular frame 8, and the sand frame 5 can reciprocate on the linear guide rails 10.

In the embodiment of the present invention, there are two driving cylinders 9 , and the two driving cylinders 9 are arranged diagonally on both sides of the annular frame 8 , that is, the driving directions of the two driving cylinders 9 are opposite. As a result, the grinding wheels and sand frames on both sides of the annular frame 8 make synchronous linear motion toward or away from each other to improve the uniformity and quality of sanding.

In the embodiment of the present invention, as shown in Figure 3, the grinding wheel 6 is connected to the sand frame 5 through a vertical grinding wheel shaft 7. In order to facilitate the rotation of the grinding wheel shaft 7, the grinding wheel shaft 7 is connected to the sand frame 5. 5 The connection is provided with a bearing; the second gear 4 is provided on the grinding wheel shaft 7, and the two are coaxially arranged to facilitate synchronous rotation of the two, and the grinding wheel shaft 7 is located on the upper and lower sides of the second gear 4 Auxiliary positioning wheels 11 are respectively provided to assist positioning when the grinding wheel and sand frame move.

In an embodiment of the present invention, Figure 2 shows a front view of a special-shaped sander. The sand frame 5 includes a rectangular frame 51. The top and bottom of the rectangular frame 51 are provided with extensions extending to the same side, for example This can be achieved by widening the top and bottom of the rectangular frame 51. The grinding wheel shaft 7 passes through the bottom and top of the rectangular frame 51 in sequence from bottom to top. Bearings are provided at the connections between the top and bottom, and the extension The upper and lower sides of the annular frame 8 can be slidably connected.

In order to ensure that the sanding process is carried out evenly and orderly, in the embodiment of the present invention, a plurality of the grinding wheels 6 and sand frames 5 are evenly distributed on both sides of the length direction of the annular frame 8 .

In the embodiment of the present invention, the teeth 31 on the inner and outer sides of the synchronous toothed belt 3 have the same shape and size to ensure that the plurality of grinding wheels 6 rotate synchronously with the main motor 1 to complete the fine grinding and sanding of the workpiece.

In the embodiment of the present invention, the grinding wheel 6 is a brush-type grinding wheel. The brush-type grinding wheel is a grinding tool composed of multiple sandpaper strips and grinding brushes, and the sandpaper strips and grinding brushes are alternately inserted into the axle groove. When grinding, the brush provides pressure to the sandpaper strip to sand the workpiece.

In order to illustrate the present invention more clearly, the following steps are explained through a specific example. The installation and use of the special-shaped sander includes the following steps:

Step 1: The ring frame 8 is a ring structure, including a straight line segment and an arc segment. In order to make the structure compact, the diameter of the arc segment is reasonably selected to be smaller, and a rectangle is left on the surface of the frame on both sides of the straight segment. Window 81, multiple brush grinding wheels 6 and sand frames 5 are installed and fixed at the window 81 of the annular frame 8 at equidistant intervals;

Step 2: Install the second gear 4 on the grinding wheel shaft 7 so that it can mesh normally with the outside of the synchronous toothed belt 3;

Step 3: Install two main drive motors at corresponding positions in the arc section of the ring frame 8, as shown in Figure 1;

Step 4: Put in the synchronous toothed belt 3. The synchronous toothed belt 3 has a double-sided tooth shape. As shown in Figure 2, the motor shaft drives the synchronous toothed belt 3 to rotate through the coupling, the first gear 2, etc., and then through The second gear 4 on the grinding wheel shaft 7 causes each brush grinding wheel 6 to rotate synchronously to complete the task of fine grinding and polishing of the workpiece surface;

Step 5: Reasonably select the number of grinding wheels 6 and sand frames 5 that need to be configured. The workpiece is fed through the transport device in the direction shown by the arrow in Figure 5. Start the main motor 1. According to the transmission principle of the synchronous toothed belt 3, each brush The grinding wheel 6 rotates at the same time and at the same speed; the synchronous toothed belt rotates at 3 speeds (that is, the brush grinding wheel at 6 speeds), and the height position of the brush grinding wheel 6 in the vertical direction is adjustable;

Step 6: Install the driving cylinder 9 on the top of the annular frame 8. The driving end of the driving cylinder 9 is connected to the sand frame 5. During sanding, the driving cylinder is started synchronously to drive the grinding wheel and the sand frame to reciprocate along the linear guide rail.

It can be seen from the above embodiments that the structural form of the present invention is more reasonable, and the number of motors used is greatly reduced compared with the traditional special-shaped sander, which saves the manufacturing cost of the sander, simplifies the control system, and makes the operation more convenient. Easy. At the same time, the load capacity of the ring frame 8 is reduced, which is beneficial to ensuring the safety of the sanding machine; it has a compact structure, high transmission efficiency, and smaller power consumption than the traditional sanding section, and is suitable for sanding workpieces of various specifications. Features. Moreover, the sanding uniformity is good and the sanding quality is excellent.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection.

Claims (7)

1. The special-shaped sander is characterized by comprising a main motor, a synchronous toothed belt, an annular rack, a driving mechanism, a plurality of grinding wheels and sand racks which are in one-to-one correspondence with the grinding wheels;

teeth are distributed on the inner side and the outer side of the synchronous toothed belt, and the synchronous toothed belt is in an annular shape matched with the annular rack in shape;

the annular rack comprises two straight line sections arranged in parallel and arc sections arranged at two ends of the straight line sections and used for connecting the two straight line sections; the two driving mechanisms are diagonally arranged on two sides of the annular rack;

the main motor is oppositely arranged at the inner sides of two ends of the synchronous toothed belt, the output shaft of the main motor is connected with a first gear, the first gear is meshed with the inner sides of the synchronous toothed belt, the synchronous toothed belt is arranged in the annular rack in a matching manner, windows are formed in two sides of the annular rack, a plurality of grinding wheels are arranged on the annular rack through the sand rack and are respectively and oppositely arranged at the outer sides of the windows, the grinding wheels are meshed with the outer sides of the synchronous toothed belt through a second gear, and the driving mechanism is connected with the upper ends of the sand rack and is used for driving the sand racks positioned at two sides of the annular rack to do opposite or opposite reciprocating motion along linear guide rails on corresponding windows of the annular rack; the grinding wheel is connected with the sand rack through a vertically arranged grinding wheel shaft, and a bearing is arranged at the joint of the grinding wheel shaft and the sand rack.

2. The profiled sander as set forth in claim 1, wherein the window is provided in the straight section, and the length of the window matches the length of the straight section.

3. The special-shaped sanding machine according to claim 1, wherein the driving mechanism is a driving cylinder, the telescopic end of the driving cylinder is connected with the upper end of the sand frame, and the fixed end of the driving cylinder is fixedly arranged on the circular arc section of the annular frame.

4. The profiled sander as set forth in claim 1, wherein the linear guide rail is provided at the upper ends of the linear sections on both sides of the ring-shaped frame, respectively, and the sanding frame is reciprocatingly movable on the linear guide rail.

5. The special-shaped sanding machine according to claim 1, wherein the second gear is arranged on the grinding wheel shaft, and auxiliary positioning wheels are respectively arranged on the upper side and the lower side of the grinding wheel shaft, which are positioned on the second gear.

6. The profiled sander as set forth in claim 1, wherein the sanding frame comprises a rectangular frame, wherein the top and bottom of the rectangular frame are provided with extensions extending to the same side, the sanding wheel shaft sequentially passes through the bottom and top of the rectangular frame from bottom to top, and the extensions are slidably connected to the upper and lower sides of the annular frame.

7. The profiled sander as set forth in any one of claims 1 to 6, wherein a plurality of said grinding wheels and sand shelves are uniformly distributed on both sides of the length direction of said annular frame according to the sander size requirement;

the shape and the size of teeth on the inner side and the outer side of the synchronous toothed belt are the same;

and an output shaft of the main motor is connected with the first gear through a coupler.