Polishing and paint spraying device for wooden door production
By combining multi-stage sanding and painting equipment, the problem of roughness on the surface of wooden doors has been solved, achieving a smooth, delicate, and beautiful surface, and improving the texture and painting effect of the wooden doors.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSHAN XINGYUE HOME FURNISHING CO LTD
- Filing Date
- 2025-05-19
- Publication Date
- 2026-05-15
AI Technical Summary
Existing sanding and painting equipment used in wooden door production cannot effectively remove the roughness of the wooden door surface, resulting in an uneven and unsmooth paint finish after painting, which affects the texture and appearance of the wooden door.
A multi-stage sanding device is used, including a coarse sanding component, a fine sanding component, and a polishing component. Combined with a painting device, the wooden door is conveyed by a feeding device for multi-stage sanding and painting. Different grit sandpaper and sanding belts are used for surface treatment, and finally a smooth paint surface is formed.
It achieves a smooth and delicate surface on wooden doors, enhancing their texture and aesthetics, while also providing a smooth and even base for painting, making the paint finish smoother and more durable.
Smart Images

Figure CN224239143U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of wooden door production, and in particular relates to a sanding and painting device for wooden door production. Background Technology
[0002] Wooden doors, also known as doors made of wood, can be categorized into many types based on their material, craftsmanship, and purpose. They are widely used in residential, commercial, and commercial buildings. Styles include European retro, minimalist modern, American, Mediterranean, Chinese, French romantic, and Italian. The production process of wooden doors involves cutting, sanding, and painting, thus requiring a sanding and painting device specifically designed for wooden door production.
[0003] Existing patent CN222222272U discloses a sanding and painting device for wooden door production, relating to the field of wooden door manufacturing. It includes a mounting housing with a dustproof component at the bottom. A paint spray nozzle is located on one side of the bottom of the housing, and the top of the nozzle is connected to one end of a liquid connecting pipe that extends through the interior of one side of the housing. A sanding component is mounted on the other side of the bottom of the housing, and a storage component is located at the top. This invention utilizes a sanding component where a motor powers the sanding blocks to sand the wooden door. Simultaneously, a transmission component collects the sanding debris, and a dust pump, powered by an electric motor and connected to a hood, collects the debris, effectively reducing the amount of sanding debris adhering to the wooden door surface and improving the device's practicality and convenience. However, the sanded wooden door surface is not smooth and fine, and this rough surface is not conducive to painting, hindering the maintenance of a smooth and durable paint finish. Utility Model Content
[0004] The purpose of this utility model is to address the aforementioned technical problems by providing a sanding and painting device for wooden door production. This device sands and polishes the surface of wooden doors, making the surface smooth and delicate, thus enhancing the texture and aesthetics of the wooden doors. At the same time, polishing provides a more uniform and smooth base for spraying, resulting in a smoother and more durable paint finish.
[0005] In view of this, the present invention provides a sanding and painting device for wooden door production, characterized in that it includes a frame, on which a feeding device is provided, and further includes:
[0006] A sanding device is provided at the input end of a feeding device and is used to sand the surface of a wooden door.
[0007] A painting device is located on the side of the sanding device away from the feeding device, and the painting device is used to spray paint onto the surface of the wooden door.
[0008] In this technical solution, the feeding device conveys the wooden door, which is then conveyed to the sanding device to sand the surface, reduce roughness, and make the surface of the wooden door smooth. Finally, the painting device sprays paint on the surface of the wooden door, so that a smooth paint layer is formed on the surface of the wooden door.
[0009] Furthermore, the sanding device includes a coarse sanding component, a fine sanding component, and a polishing component. The coarse sanding component is used to perform initial sanding on the surface of the wooden door, the fine sanding component is used to finely sand the surface of the wooden door, and the polishing component is used to polish the surface of the wooden door.
[0010] Furthermore, the coarse grinding assembly includes:
[0011] Support bases, two support bases are fixedly installed on both sides of the frame;
[0012] A grinding roller, the two ends of which are rotatably mounted on the support base along the width direction of the support frame, and sandpaper is fixedly mounted on the outer circumference of the grinding roller, with a gap between the sandpaper and the impact device.
[0013] A power source is fixedly mounted on the frame, and the output end of the power source is connected to the grinding roller. The power source is used to drive the grinding roller to rotate.
[0014] In this technical solution, the power source can be an electric motor to drive the grinding roller to rotate, and the rotation of the grinding roller will drive the sandpaper to rotate. The sandpaper is 80-120 grit, which is used to grind the surface of the wooden door to remove the wood fibers and smooth the surface.
[0015] Furthermore, a first crank is rotatably mounted on the support base. The length of the first crank is less than the distance from the axis of the support base to the upper surface of the feeding device. One end of the first crank is fixedly connected to the grinding roller. The first crank is used to make the grinding roller grind wooden doors of different thicknesses.
[0016] In this technical solution, when the wooden door reaches the support seat through the feeding device, the front end of the wooden door will touch the polishing roller connected to the first crank. As the wooden door moves, the first crank will rotate along the axis of the support seat. Under the action of gravity, the surface of the polishing roller will always be in contact with the surface of the wooden door. The first crank can make the polishing roller adapt to wooden doors of different thicknesses, making it more practical.
[0017] Furthermore, the grinding assembly includes:
[0018] A fixed base is fixedly mounted on the machine frame. The fixed base is located on the side of the rough grinding component away from the feeding device, and a sliding groove is provided on the fixed base.
[0019] A fixed roller is provided, which is disposed in a sliding groove. There is a gap between the fixed roller and the feeding device. The outer surface of the fixed roller is provided with sandpaper with a larger grit than that of the grinding roller.
[0020] An electric cylinder is fixedly mounted on the frame and is used to control the lifting and lowering of the fixed roller. One end of the electric cylinder is connected to one end of the fixed roller.
[0021] In this technical solution, the sandpaper on the fixed roller has a grit of 240-320. When the wooden door passes under the fixed roller, the movement of the wooden door will drive the fixed roller to rotate, so that the sandpaper on the fixed roller will rub the surface of the wooden door, achieving the effect of fine grinding of the wooden door surface. The electric cylinder controls the fixed roller to rise and fall on the sliding groove so that the outer surface of the fixed roller is in close contact with the surface of the wooden door, in order to adapt to wooden doors of different thicknesses, improve practicality, and at the same time fix the vertical position of the wooden door to prevent the wooden door from shaking.
[0022] Furthermore, a support frame is fixedly mounted on the frame, and the polishing assembly is mounted on the support frame. The polishing assembly includes:
[0023] A contact wheel assembly is disposed above the feed device along the width direction of the frame. The contact wheel assembly is rotatably connected to the support base, and an abrasive belt is provided on the contact wheel.
[0024] A sanding belt drive assembly is fixedly mounted on a support frame and is fixedly connected to a contact wheel. The sanding belt drive assembly is used to drive the contact wheel assembly to rotate.
[0025] In this technical solution, the sanding belt drive assembly can use a drive motor to increase the power of the sanding belt movement. The sanding belt uses a mesh size of 400 or higher. The sanding belt drive assembly drives the contact wheel to rotate, thereby driving the sanding belt to rotate, thus polishing the surface of the wooden door, making the surface of the wooden door smooth, delicate and more beautiful.
[0026] Furthermore, the gap between the lower surface of the contact wheel assembly and the feeding device is less than the thickness of the wooden door. The contact wheel assembly includes a driving wheel and two driven wheels, which are triangular in shape. The driving wheel is rotatably connected to the support frame.
[0027] In this technical solution, the wooden door moves to the bottom of the contact wheel assembly. The wooden door moves forward, causing the driven wheel to rotate around the driving wheel. Under the action of gravity, the driven wheel is in close contact with the surface of the wooden door, so that the sanding belt on the driven wheel polishes the surface of the wooden door. The driven wheel can rotate around the driving wheel, so that the sanding belt can polish wooden doors of different thicknesses.
[0028] Furthermore, the painting apparatus includes:
[0029] A paint bucket is fixedly installed below the machine frame. The paint bucket contains paint, and a water pump is installed on the paint bucket and fixedly installed on the machine frame.
[0030] The nozzle is fixedly installed on both sides of the feeding device, and the nozzle is provided with a nozzle;
[0031] The paint pipe has one end connected to a water pump and the other end connected to a spray pipe.
[0032] In this technical solution, the feeding device conveys the wooden door to the painting device, and the water pump sprays the paint in the paint bucket from the nozzle of the spray pipe onto the surface of the wooden door. As the wooden door moves in the painting device, a complete paint layer is formed on the entire surface of the wooden door.
[0033] The beneficial effects of this utility model are:
[0034] 1. This utility model realizes that the feeding device conveys the wooden door, the wooden door is conveyed to the sanding device to sand the surface to reduce the roughness and make the surface of the wooden door smooth. Finally, the painting device sprays paint on the surface of the wooden door to form a smooth paint surface. Attached image description:
[0035] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0036] Figure 2 This is a front view structural diagram of the wooden door of this utility model during the rough grinding of the components;
[0037] Figure 3 This is a cross-sectional view of the wooden door polishing assembly of this utility model;
[0038] Figure 4 This is a schematic diagram of the coarse grinding component structure of this utility model;
[0039] Figure 5 This is a schematic diagram of the structure of the sanding belt drive assembly of this utility model;
[0040] In the diagram: 1. Frame; 2. Feeding device; 3. Wooden door; 4. Grinding device; 41. Coarse grinding assembly; 411. Support base; 412. Grinding roller; 413. Crank; 42. Fine grinding assembly; 421. Fixed base; 422. Cylinder; 423. Fixed roller; 424. Sliding groove; 43. Polishing assembly; 431. Support frame; 432. Sanding belt; 433. Drive wheel; 434. Driven wheel; 5. Spraying device; 51. Paint bucket; 52. Spray pipe; 53. Nozzle; 54. Water pump; 55. Paint pipe. Detailed Implementation
[0041] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.
[0042] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.
[0043] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0044] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.
[0045] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
[0046] Example 1:
[0047] like Figure 1-5 As shown, this utility model provides a sanding and painting device for the production of wooden doors 3, including a frame 1, on which a feeding device 2 is provided, and further comprising:
[0048] A sanding device 4 is provided at the input end of the feeding device 2 and is used to sand the surface of the wooden door 3.
[0049] A painting device is provided, which is located on the side of the sanding device 4 away from the feeding device 2. The painting device is used to spray paint onto the surface of the wooden door 3.
[0050] The feeding device 2 conveys the wooden door 3, which is then conveyed to the sanding device 4 to sand the surface, reduce roughness, and make the surface of the wooden door 3 smooth. Finally, the surface of the wooden door 3 is sprayed with paint by the spraying device, so that a smooth paint layer is formed on the surface of the wooden door 3.
[0051] The polishing device 4 includes a coarse polishing component 41, a fine polishing component 42, and a polishing component 43. The coarse polishing component 41 is used to perform initial polishing on the surface of the wooden door 3, the fine polishing component 42 is used to fine polish the surface of the wooden door 3, and the polishing component 43 is used to polish the surface of the wooden door 3.
[0052] The coarse grinding component 41 includes:
[0053] Support base 411, two support bases 411 are fixedly installed on both sides of the frame 1;
[0054] Grinding roller 412, both ends of the grinding roller 412 are rotatably mounted on the support base 411 along the width direction of the support frame 431, and sandpaper is fixedly mounted on the outer circumference of the grinding roller 412, and there is a gap between the sandpaper and the impact device.
[0055] A power source is fixedly mounted on the frame 1. The output end of the power source is connected to the grinding roller 412. The power source is used to drive the grinding roller 412 to rotate.
[0056] The power source can be an electric motor to drive the grinding roller 412 to rotate. The rotation of the grinding roller 412 drives the sandpaper to rotate. The sandpaper is 80-120 grit and is used to grind the surface of the wooden door 3 to remove the wood fibers and smooth the surface.
[0057] A first crank 413 is rotatably mounted on the support base 411. The length of the first crank 413 is less than the distance from the axis of the support base 411 to the upper surface of the feed device 2. One end of the first crank 413 is fixedly connected to the grinding roller 412. The first crank 413 is used to make the grinding roller 412 grind wooden doors 3 of different thicknesses.
[0058] When the wooden door 3 reaches the support base 411 through the feeding device 2, the front end of the wooden door 3 will touch the sanding roller 412 connected to the first crank 413. As the wooden door 3 moves, the first crank 413 will rotate along the axis of the support base 411. Under the action of gravity, the surface of the sanding roller 412 will always be in contact with the surface of the wooden door 3. The first crank 413 can make the sanding roller 412 adapt to wooden doors 3 of different thicknesses, making it more practical.
[0059] The fine grinding component 42 includes:
[0060] Fixed seat 421, the fixed seat 421 is fixedly mounted on the frame 1, the fixed seat 421 is located on the side of the rough grinding component 41 away from the feeding device 2, and the fixed seat 421 is provided with a sliding groove 424;
[0061] Fixed roller 423 is disposed in sliding groove 424. There is a gap between fixed roller 423 and feeding device 2. The outer surface of fixed roller 423 is provided with sandpaper with a larger grit than that of grinding roller 412.
[0062] An electric cylinder 422 is fixedly mounted on the frame 1. The electric cylinder 422 is used to control the lifting and lowering of the fixed roller 423. One end of the electric cylinder 422 is connected to one end of the fixed roller 423.
[0063] The sandpaper on the fixed roller 423 has a grit of 240-320. When the wooden door 3 passes under the fixed roller 423, the movement of the wooden door 3 will drive the fixed roller 423 to rotate, so that the sandpaper on the fixed roller 423 will rub the surface of the wooden door 3, achieving the effect of fine grinding of the surface of the wooden door 3. The electric cylinder 422 controls the fixed roller 423 to rise and fall on the sliding groove 424, so that the outer surface of the fixed roller 423 is in close contact with the surface of the wooden door 3, in order to adapt to wooden doors of different thicknesses, improve practicality, and at the same time fix the vertical position of the wooden door 3 to prevent the wooden door 3 from shaking.
[0064] A support frame 431 is fixedly mounted on the frame 1, and the polishing assembly 43 is mounted on the support frame 431. The polishing assembly 43 includes:
[0065] A contact wheel assembly is disposed above the feed device 2 along the width direction of the frame 1. The contact wheel assembly is rotatably connected to the support base 411, and an abrasive belt 432 is disposed on the contact wheel.
[0066] A sanding belt 432 drive assembly is fixedly mounted on a support frame 431. The sanding belt 432 drive assembly is fixedly connected to a contact wheel and is used to drive the contact wheel assembly to rotate.
[0067] The sanding belt 432 drive assembly can use a drive motor to increase the power for the movement of the sanding belt 432. The sanding belt 432 has a mesh size of 400 or higher. The sanding belt 432 drive assembly drives the contact wheel to rotate, thereby driving the sanding belt 432 to rotate, thus polishing the surface of the wooden door 3, making the surface of the wooden door 3 smooth, delicate and more beautiful.
[0068] The gap between the lower surface of the contact wheel assembly and the feeding device 2 is less than the thickness of the wooden door 3. The contact wheel assembly includes a driving wheel 433 and two driven wheels 434. The driving wheel 433 and the two driven wheels 434 are triangular in shape. The driving wheel is rotatably connected to the support frame 431.
[0069] The wooden door 3 moves to the bottom of the contact wheel assembly. The wooden door 3 moves forward, causing the driven wheel 434 to rotate around the driving wheel 433. Under the action of gravity, the driven wheel 434 is in close contact with the surface of the wooden door 3, so that the sanding belt 432 on the driven wheel 434 polishes the surface of the wooden door 3. The driven wheel 434 can rotate around the driving wheel 433, so that the sanding belt 432 can polish wooden doors 3 of different thicknesses.
[0070] The painting device includes:
[0071] Paint bucket 51 is fixedly installed below the frame 1. Paint is contained in the paint bucket 51. A water pump 54 is installed on the paint bucket 51 and is fixedly installed on the frame 1.
[0072] The nozzle 52 is fixedly installed on both sides of the feeding device 2, and the nozzle 52 is provided with nozzles 53;
[0073] Paint pipe 55, one end of which is connected to water pump 54, and the other end of which is connected to spray pipe 52.
[0074] The feeding device 2 conveys the wooden door 3 to the painting device. The water pump 54 sprays the paint in the paint bucket 51 out from the nozzle 53 of the spray pipe 52. The paint is sprayed onto the surface of the wooden door 3. As the wooden door 3 moves in the painting device, a complete paint layer is formed on the entire surface of the wooden door 3.
[0075] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.
Claims
1. A sanding and painting device for wooden door production, characterized in that, Includes a frame (1), on which a feeding device (2) is provided, and further includes: A sanding device (4) is provided at the input end of the feeding device (2) and is used to sand the surface of the wooden door (3). A painting device is provided on the side of the sanding device (4) away from the feeding device (2). The painting device is used to spray paint onto the surface of the wooden door (3).
2. The sanding and painting device for wooden door production according to claim 1, characterized in that, The grinding device (4) includes a coarse grinding component (41), a fine grinding component (42), and a polishing component (43). The coarse grinding component (41) is used to perform initial grinding on the surface of the wooden door (3), the fine grinding component (42) is used to finely grind the surface of the wooden door (3), and the polishing component (43) is used to polish the surface of the wooden door (3).
3. The sanding and painting device for wooden door production according to claim 2, characterized in that, The coarse grinding assembly (41) includes: Support base (411), two support bases (411) are fixedly installed on both sides of the frame (1); A grinding roller (412) is rotatably mounted on a support base (411) at both ends along the width direction of the support frame (431). Sandpaper is fixedly mounted on the outer circumference of the grinding roller (412), and there is a gap between the sandpaper and the impact device. The power source is fixedly mounted on the frame (1), and the output end of the power source is connected to the grinding roller (412). The power source is used to drive the grinding roller (412) to rotate.
4. The sanding and painting device for wooden door production according to claim 3, characterized in that, A first crank (413) is rotatably mounted on the support base (411). The length of the first crank (413) is less than the distance from the axis of the support base (411) to the upper surface of the feed device (2). One end of the first crank (413) is fixedly connected to the grinding roller (412). The first crank (413) is used to make the grinding roller (412) grind wooden doors (3) of different thicknesses.
5. A sanding and painting device for wooden door production according to claim 2, characterized in that, The fine grinding component (42) includes: A fixed seat (421) is fixedly mounted on the frame (1). The fixed seat (421) is located on the side of the rough grinding assembly (41) away from the feed device (2). A sliding groove (424) is provided on the fixed seat (421). A fixed roller (423) is provided in a sliding groove (424). There is a gap between the fixed roller (423) and the feeding device (2). The outer surface of the fixed roller (423) is provided with sandpaper with a larger grit than that of the grinding roller (412). An electric cylinder (422) is fixedly mounted on the frame (1). The electric cylinder (422) is used to control the lifting and lowering of the fixed roller (423). One end of the electric cylinder (422) is connected to one end of the fixed roller (423).
6. The sanding and painting device for wooden door production according to claim 2, characterized in that, A support frame (431) is fixedly mounted on the frame (1), and the polishing assembly (43) is mounted on the support frame (431). The polishing assembly (43) includes: A contact wheel assembly is arranged above the feed device (2) along the width direction of the frame (1). The contact wheel assembly is rotatably connected to the support base (411). A sanding belt (432) is provided on the contact wheel. A sanding belt (432) drive assembly is fixedly mounted on a support frame (431). The sanding belt (432) drive assembly is fixedly connected to a contact wheel. The sanding belt (432) drive assembly is used to drive the contact wheel assembly to rotate.
7. A sanding and painting device for wooden door production according to claim 6, characterized in that, The gap between the lower surface of the contact wheel assembly and the feeding device (2) is less than the thickness of the wooden door (3). The contact wheel assembly includes a driving wheel (433) and two driven wheels (434). The driving wheel (433) and the two driven wheels (434) are triangular in shape. The driving wheel is rotatably connected to the support frame (431).
8. A sanding and painting device for wooden door production according to claim 2, characterized in that, The painting device includes: A paint bucket (51) is fixedly installed below the frame (1). The paint bucket (51) contains paint. A water pump (54) is installed on the paint bucket (51). The water pump (54) is fixedly installed on the frame (1). The nozzle (52) is fixedly installed on both sides of the feeding device (2), and the nozzle (53) is provided on the nozzle (52); A paint pipe (55) is connected at one end to a water pump (54) and at the other end to a spray pipe (52).