Paint spraying equipment for long-shaped furniture boards

Abstract

The present invention discloses a painting device for long-shaped furniture boards, comprising: a workbench, a painting rack mechanism, two board positioning mechanisms, and two painting mechanisms; the painting rack mechanism includes a rack body, two mounting frames, a lifting mechanism, and a flipping mechanism. The two mounting frames are symmetrically hinged to the front and rear ends of the rack body respectively, and the lifting mechanism is fixed on the workbench and used to drive the rack body to lift; the board positioning mechanism includes a placement board, four corner clamping members, and a plurality of side clamping members. The four corner clamping members are respectively installed at the four corners of the placement board, and the plurality of side clamping members are respectively installed on the left and right sides of the placement board along the front-rear direction. The corner clamping members and the side clamping members are used to clamp the four corners of the board; the two painting mechanisms are respectively located in front of and behind the rack body, and each painting mechanism includes a painting rack and a paint gun. The beneficial effect of the present invention is that it can handle the painting of multiple groups of long-shaped furniture board pieces and is applicable to board pieces with non-flat painting end faces.

Description

Technical Field

[0001] The present invention relates to a painting device, in particular to a painting device for long-shaped furniture boards. Background Art

[0002] In the field of furniture production, painting furniture boards is one of the key processes to improve the quality of furniture. Basically, in the relevant industries, a paint spray gun is used in combination with other related equipment to spray paint on the entire surface of the boards. For the equipment for painting boards, as disclosed in the prior art publication number CN107876291B, a board painting device is provided, and its structure includes a paint spraying box device structure, a right box door, a lock, a left box door, a hinge, an operating table, a support rod, a roller, a conveyor belt, operating buttons, a display screen, a fixing frame, and a cross bar. The right end of the operating table is connected to the right end of the right box door through a hinge, the left end of the right box door is connected to the right end of the left box door through a lock, and the left end of the right box door and the right end of the left box door are in clearance fit. Operating buttons are provided on the top of the operating table, and the bottom of the operating buttons is vertically connected to the top of the operating table. In the board painting device of the present invention, the device automatically completes the painting process, and the painting effect is extremely uniform. When the board comes out of the outlet slot, the device automatically stops working, which is environmentally friendly and energy-saving, eliminating the cumbersome steps of manual painting, improving work efficiency and quality, and thus increasing the production volume of painted boards. Although this technology solves the problems of serious manual operation in the existing board painting equipment, time-consuming, laborious, low work efficiency, delaying the work process, affecting the production of painted boards, and thus reducing the production sales volume. However, there are still deficiencies. Such a painting device can only paint boards with flat end faces. For boards with non-flat end faces, especially boards with grooves or arc surfaces, there are problems such as incomplete local painting or even local painting dead corners, resulting in uneven paint spraying on the surface of the boards, affecting the painting quality and the quality of the final furniture products. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a painting device for long-shaped furniture boards, which can handle the painting of multiple groups of long-shaped furniture board parts, and can be better applicable to board parts with non-flat painting end faces, and can perform full-coverage and uniform painting treatment to avoid large deviations in the thickness of the paint layer on the painted surface.

[0004] The present invention is achieved by the following technical solutions.

[0005] A painting device for long-shaped furniture boards includes: a workbench, a painting rack mechanism, two board positioning mechanisms, and two painting mechanisms;

[0006] The spray painting rack mechanism includes a rack body, two mounting frames, a lifting mechanism, and a flipping mechanism. The two mounting frames are symmetrically hinged to the front and rear ends of the rack body respectively, and the mounting frames can be flipped along the left - right direction as the axis. The lifting mechanism is fixed on the workbench and is used to drive the rack body to lift and lower.

[0007] The sheet positioning mechanism includes a placement plate, four corner clamping parts, and a plurality of side clamping parts. The four corner clamping parts are respectively installed at the four corners of the placement plate, and the plurality of side clamping parts are respectively installed along the front - rear direction on the left and right sides of the placement plate. The corner clamping parts and the side clamping parts are used to clamp the four corners of the sheet. The side clamping parts can be adjusted in position along the front - rear direction, and the corner clamping parts and the side clamping parts can be adjusted in position along the left - right direction.

[0008] Two spray painting mechanisms are respectively located in front of and behind the rack body. The spray painting mechanism includes a spray painting rack and a spray gun. The spray painting rack can reciprocally move along the left - right direction on the workbench, and the spray gun is fixedly installed on the spray painting rack.

[0009] Further, the rack body includes two brackets and a connecting piece. The brackets are arranged along the front - rear direction and are respectively located on the left and right sides. The connecting piece is fixedly connected to the middle parts of the two brackets respectively. The lifting mechanism is fixedly connected to the connecting piece. The left and right frames of the two mounting frames are symmetrically hinged to the front and rear parts of the two brackets respectively.

[0010] Further, the bracket includes a fixed frame, two translation frames, two translation guide columns, and a translation mechanism. The two translation guide columns are horizontally arranged and are respectively fixed at the front and rear ends of the fixed frame. The two translation frames are respectively slidably sleeved on the two translation guide columns. The translation mechanism can drive the two translation frames to move in opposite directions along the translation guide columns, and the two translation frames are always symmetric about the fixed frame. The two ends of the connecting piece are respectively fixed to the two fixed frames.

[0011] Further, the translation mechanism includes a translation cylinder, a horizontally arranged translation main frame, and two translation brackets. The translation cylinder is fixed on the workbench, its piston rod is vertically arranged and is fixed in the middle of the translation main frame. One ends of the two translation brackets are respectively hinged to the two ends of the translation main frame, and the other ends are respectively hinged to the two translation frames.

[0012] Further, a vertical buffer telescopic rod is arranged in the middle of the bottom end of the fixed frame. The buffer telescopic rod is fixedly connected to the top end of the translation main frame. Limiting blocks are respectively arranged on both sides of the buffer telescopic rod at the bottom end of the fixed frame. Limiting bolts are respectively arranged on both sides of the buffer telescopic rod at the top end of the translation main frame. The two limiting bolts can respectively abut against the two limiting blocks to prevent the buffer telescopic rod from shortening further.

[0013] Furthermore, the flipping mechanism includes a flipping frame, a flipping cylinder, and flipping telescopic rods. The flipping frame is fixed to the frame body. The flipping cylinder is fixed to the top of the flipping frame and above the center of the frame body. The piston rod of the flipping cylinder is arranged vertically downward, and the bottom end thereof is fixedly connected to one end of each of the two flipping telescopic rods. The other ends of the flipping telescopic rods are respectively hinged to the two mounting frames, and the flipping telescopic rods are horizontally arranged in the front-rear direction.

[0014] Furthermore, the lifting mechanism includes a lifting cylinder and a lifting table. The lifting cylinder is fixed to the workbench and below the center of the frame body. Its piston rod is arranged vertically and the top end is fixedly connected to the lifting table, and part of the connecting piece is fixed to the lifting table.

[0015] Furthermore, a protective shell is sleeved outside the lifting cylinder. The bottom end of the protective shell is fixed to the workbench, and multiple reinforcing ribs are arranged on the surface of the protective shell.

[0016] Furthermore, there are two connecting pieces. Two clamping grooves are fixedly arranged on the top surface of the lifting table, and parts of the two connecting pieces are respectively located in the two clamping grooves.

[0017] Furthermore, rotating shafts are respectively fixedly connected to the left and right frames of the mounting frame. Bearings are installed at the positions of the frame body corresponding to the rotating shafts, and the rotating shafts are assembled in the bearings.

[0018] Furthermore, the placing plate where the corner clamping piece is located is provided with a sliding rail in the left-right direction. The corner clamping piece is slidably installed on the sliding rail. A locking screw is inserted into the top surface of the corner clamping piece, and the bottom end of the locking screw can be in close contact with the sliding rail to fix the corner clamping piece.

[0019] Furthermore, sliding rails in the front-rear direction are arranged on the left and right sides of the placing plate. The side clamping piece is slidably installed on the sliding rail. A locking screw is inserted into the top surface of the side clamping piece, and the bottom end of the locking screw can be in close contact with the sliding rail to fix the side clamping piece.

[0020] Furthermore, the side clamping piece includes a mounting part and a clamping part. The mounting part is slidably installed on the sliding rail. The clamping part is provided with at least two adjusting screws arranged in the left-right direction. The adjusting screws pass through the mounting part, and locking nuts are provided to lock the positions.

[0021] Advantages of the present invention:

[0022] The painting mechanism provided by the present invention can cooperate with lifting, translation, and flipping to make any part of the furniture board face the paint gun directly. Moreover, there will be no large deviation in the straight-line distance between any painting part and the paint gun, and the painting density received during painting remains substantially the same, so that the paint layer on the board surface is uniform, improving the quality of the furniture. At the same time, the two board positioning mechanisms can install multiple long-shaped boards and can adjust the clamping position according to the length and width of the board, with good adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front view schematic diagram of a painting device for long-shaped furniture boards;

[0024] Figure 2 It is a front view schematic diagram of the painting mechanism;

[0025] Figure 3 It is a top view schematic diagram of the frame;

[0026] Figure 4 It is a front view schematic diagram of the lifting mechanism;

[0027] Figure 5 It is a top view schematic diagram of the board positioning mechanism. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The present invention will be further described in detail below with reference to the drawings and embodiments.

[0029] Refer to Figures 1 - 5 , a painting device for long-shaped furniture boards, includes: a workbench 1, a painting frame mechanism, two board positioning mechanisms, and two painting mechanisms.

[0030] The painting frame mechanism includes a frame 2, two mounting frames 21, a lifting mechanism, and a flipping mechanism. The two mounting frames 21 are symmetrically hinged to the front and rear ends of the frame 2 respectively, and the mounting frames 21 flip along the left-right direction as the axis. The left and right frames of the mounting frame 21 are respectively fixedly connected with flipping shafts 211, and bearings 212 are installed at the positions of the frame 2 corresponding to the flipping shafts 211, and the flipping shafts 211 are assembled in the bearings 212. The lifting mechanism is fixed on the workbench 1 and is used to drive the frame 2 to lift. The frame 2 has a translation mechanism, which can make the front and rear ends of the frame 2 extend and retract along the front-rear direction, and the telescopic amplitude is the same.

[0031] The two painting mechanisms are respectively located in front of and behind the frame 2. The painting mechanism includes a painting frame 41 and a paint gun 42. The painting frame 41 can reciprocate on the workbench 1 along the left-right direction, and the paint gun 42 is fixedly installed on the painting frame. For the reciprocating movement of the painting frame 41, a slide rail can be set on the workbench 1 and a positive and negative servo motor can be used for driving.

[0032] The installation frame 21 is used to install and fix the plate positioning mechanism, and the plate positioning mechanism is used to fixedly place a plurality of long plates to be painted. The installation frame 21 can achieve height position adjustment, front and rear position adjustment, and rotation angle adjustment through the lifting mechanism, flipping mechanism, and translation mechanism. It is mainly aimed at plates with non-flat end faces, and the plate surface may have grooves, arc structures, etc. This setting of the installation frame 21 can achieve any painted part on the plate surface, whether it is a plane or a curved surface. The plane can be perpendicular to the painting direction, and the curved surface can have a tangent perpendicular to the painting direction. Moreover, the linear distance between the painted part and the painting mechanism will not deviate greatly, that is, the painted density received by the painted part during painting is the same. During actual painting operations, the painting rack reciprocates in the left-right direction, the paint gun continuously sprays paint, and the painting rack mechanism designs mechanical action programming according to plates with different-shaped end faces. The lifting mechanism, flipping mechanism, frame 2, and translation mechanism cooperate with each other to complete the non-discriminatory painting of any part of the plate.

[0033] For the frame 2, the frame 2 includes two brackets and two connecting members 22. The brackets are arranged in the front-rear direction and are located on the left and right sides respectively. The two connecting members 22 are respectively fixedly connected to the middle parts of the two brackets. The lifting mechanism is fixedly connected to the connecting members 22. The left and right frames of the two installation frames 21 are symmetrically hinged to the front and rear parts of the two brackets. The bracket includes a fixed frame 231, two translation frames 232, two translation guide columns 233, and a translation mechanism. The two translation guide columns 233 are horizontally arranged and are respectively fixed to the front and rear ends of the fixed frame 231. The two translation frames 232 are respectively slidably sleeved on the two translation guide columns 233. The translation mechanism can drive the two translation frames 232 to move in opposite directions along the translation guide columns 233, and the two translation frames 232 are always symmetrical about the fixed frame 231. The two ends of the connecting member 22 are respectively fixed to the two fixed frames 231. The translation mechanism includes a translation cylinder 234, a horizontally arranged translation main frame 235, and two translation brackets 236. The translation cylinder 234 is fixed on the workbench 1, and its piston rod is vertically arranged and fixed to the middle part of the translation main frame 235. One end of each of the two translation brackets 236 is respectively hinged to the two ends of the translation main frame 235, and the other end is respectively hinged to the two translation frames 232.

[0034] By setting the bracket to be composed of the fixed frame 231 and two symmetrical translation frames 232, the two mounting frames 21 can move in the front-back direction, and this movement is symmetrical. The lifting and flipping of the two mounting frames 21 are synchronized symmetrically (described later), so as to realize simultaneous painting at two places on one frame 2. Of course, the same plates must be painted at the two places, and simultaneous painting cannot be carried out on different plates.

[0035] The articulated setting of the translation main frame 235 and the translation support frame 236, in cooperation with the translation cylinder 234, has smooth mechanical actions and better executes the synchronous reverse movement of the two translation frames 232. By setting two translation cylinders 234, on the one hand, as a power mechanism, it drives the two translation frames 232 to move synchronously and oppositely in the front-back direction, and on the other hand, it also serves as two support components of the entire frame 2, strengthening the structural stability of the frame 2 and avoiding the phenomenon of the frame 2 moving around.

[0036] Considering the stability of the bracket, a vertical buffer telescopic rod 237 is provided in the middle of the bottom end of the fixed frame 231. The buffer telescopic rod 237 is fixedly connected to the top end of the translation main frame 235. Limit blocks 238 are respectively provided on both sides of the buffer telescopic rod 237 at the bottom end of the fixed frame 231, and limit bolts 239 are respectively provided on both sides of the buffer telescopic rod 237 at the top end of the translation main frame 235. The two limit bolts 239 can respectively abut against the two limit blocks 238 to prevent the buffer telescopic rod 237 from shortening further.

[0037] The setting of the buffer telescopic rod 237 has an effect similar to that of a guide post, which can guide the lifting of the translation main frame 235, avoid the deviation of the rotation amplitude of the two translation support frames 236 and thus the phenomenon of jamming, and ensure that the two translation frames 232 always maintain a symmetrical positional relationship. The setting of the limit blocks 238 and the limit bolts 239 can limit the distance between the fixed frame 231 and the translation main frame 235, play a role in protecting the structural stability, and avoid irreversible damage.

[0038] For the flipping mechanism, the flipping mechanism includes a flipping frame 241, a flipping cylinder 242, and a flipping telescopic rod 243. The flipping frame 241 is fixed on the frame 2, and the specific fixing position is two connecting pieces 22. The flipping cylinder 242 is fixed on the top of the flipping frame 241 and above the center of the frame 2. The piston rod of the flipping cylinder 242 is arranged vertically downward, and the bottom ends of the piston rod are respectively fixedly connected to one ends of the two flipping telescopic rods 243. The other ends of the flipping telescopic rods 243 are respectively articulated to the two mounting frames 21, and the flipping telescopic rods 243 are arranged horizontally in the front-back direction.

[0039] Driven by the flipping cylinder 242, the horizontal height positions of the two flipping telescopic rods 243 can be controlled, so as to control the flipping of the two mounting frames 21. Since the two flipping telescopic rods 243 are the same, it can be ensured that the flipping directions of the two mounting frames 21 are opposite and the flipping amplitudes are the same, that is, the two mounting frames 21 always maintain a symmetrical state.

[0040] For the lifting mechanism, the lifting mechanism includes a lifting cylinder 251 and a lifting table 252. The lifting cylinder 251 is fixed on the workbench 1 and is located below the center of the frame body 2. Its piston rod is vertically arranged and its top end is fixedly connected to the lifting table 252. A part of the connecting piece 22 is fixed on the lifting table 252. Two card slots 253 are fixedly arranged on the top surface of the lifting table 252, and parts of the two connecting pieces 22 are respectively located in the two card slots 253.

[0041] By driving the lifting cylinder 251, the height position of the lifting table 252 is controlled, so as to control the height positions of the frame body 2 and the two mounting frames 21. The card slots 253 are arranged to place the connecting pieces 22. On the one hand, it can play a role in fixing the frame body 2 and avoid the phenomenon of the frame body 2 shaking in the front-rear direction. On the other hand, this non-direct connection method is also convenient for the maintenance and repair of the lifting cylinder 251.

[0042] A protective shell 254 is sleeved outside the lifting cylinder 251. The bottom end of the protective shell 254 is fixed on the workbench 1. A plurality of reinforcing ribs 255 are arranged on the surface of the protective shell 254. The purpose of setting the protective shell 254 is to protect the lifting cylinder 251 and avoid structural damage when exposed. Similarly, it can also be set outside the two translation cylinders 234.

[0043] For the plate positioning mechanism, the plate positioning mechanism includes a placing plate 31, four corner clamping parts 32, and a plurality of side clamping parts 33. The four corner clamping parts 32 are respectively installed at the four corners of the placing plate 31. The plurality of side clamping parts 33 are respectively installed on the left and right sides of the placing plate 31 along the front-rear direction. The corner clamping parts 32 and the side clamping parts 33 are used to clamp the four corners of the plate. The side clamping parts 33 can be adjusted in position along the front-rear direction, and the corner clamping parts 32 and the side clamping parts 33 can be adjusted in position along the left-right direction.

[0044] The placing plate 31 where the corner clamping parts 32 are located is provided with a slide rail 321 in the left-right direction. The corner clamping parts 32 are slidably installed on the slide rail 321. A locking screw 322 is inserted into the top surface of the corner clamping part 32. The bottom end of the locking screw 322 can be in close contact with the slide rail 321 to fix the corner clamping part 32. A scale can be set on the slide rail 321, so as to achieve the accuracy of position adjustment.

[0045] Sliding rails 331 extending in the front-rear direction are provided on the left and right sides of the placement plate 31. The side clamping members 33 are slidably mounted on the sliding rails 331. A locking screw 332 is inserted into the top surface of the side clamping member 33. The bottom end of the locking screw 332 can be in close contact with the sliding rail 331 to fix the side clamping member 33. Similarly, scales can be provided on the sliding rail 331, so as to achieve the accuracy of position adjustment.

[0046] For the side clamping member 33, it includes a mounting portion 333 and a clamping portion 334. The mounting portion 333 is slidably mounted on the sliding rail 331. At least two adjusting screws 335 extending in the left-right direction are provided on the clamping portion 334. The adjusting screws 335 pass through the mounting portion 333, and locking nuts 336 are provided to lock the positions.

[0047] By adjusting the left-right and front-rear positions of the side clamping members 33 and the corner clamping members 32, strip-shaped plates with any length and width dimensions can be matched. At the same time, multiple placement plates 31 can be installed simultaneously, improving the painting efficiency.

[0048] The above embodiments are only used to illustrate the technical concept and features of the present invention. The purpose is to enable those skilled in the art to understand the content of the present invention and implement it, and it cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A painting device for long-shaped furniture boards, characterized in that, it includes: a workbench, a painting rack mechanism, two board positioning mechanisms, and two painting mechanisms; The painting rack mechanism includes a rack body, two mounting frames, a lifting mechanism, and a flipping mechanism. The two mounting frames are symmetrically hinged to the front and rear ends of the rack body respectively, and the mounting frames flip along the left-right direction as the axis. The lifting mechanism is fixed on the workbench and is used to drive the rack body to lift and lower; The board positioning mechanism includes a placement board, four corner clamps, and a plurality of side clamps. The four corner clamps are respectively installed at the four corners of the placement board, and the plurality of side clamps are respectively installed on the left and right sides of the placement board along the front-rear direction. The corner clamps and the side clamps are used to clamp the four corners of the board. The side clamps can be adjusted in position along the front-rear direction, and the corner clamps and the side clamps can be adjusted in position along the left-right direction; The two painting mechanisms are respectively located in front of and behind the rack body. The painting mechanism includes a painting rack and a paint gun. The painting rack can reciprocate on the workbench along the left-right direction, and the paint gun is fixedly installed on the painting rack; The rack body includes two brackets and a connecting piece. The brackets are arranged along the front-rear direction and are respectively located on the left and right sides. The connecting pieces are respectively fixedly connected to the middle parts of the two brackets. The lifting mechanism is fixedly connected to the connecting piece. The left and right frames of the two mounting frames are symmetrically hinged to the front and rear parts of the two brackets; The bracket includes a fixed frame, two translation frames, two translation guide columns, and a translation mechanism. The two translation guide columns are horizontally arranged and are respectively fixed to the front and rear ends of the fixed frame. The two translation frames are respectively slidably sleeved on the two translation guide columns. The translation mechanism can drive the two translation frames to move in opposite directions along the translation guide columns, and the two translation frames are always symmetrical about the fixed frame. The two ends of the connecting piece are respectively fixed to the two fixed frames; The translation mechanism includes a translation cylinder, a horizontally arranged translation main frame, and two translation brackets. The translation cylinder is fixed on the workbench, its piston rod is vertically arranged and is fixed to the middle part of the translation main frame. One ends of the two translation brackets are respectively hinged to the two ends of the translation main frame, and the other ends are respectively hinged to the two translation frames.

2. The painting device for long-shaped furniture boards according to claim 1, characterized in that, a vertical buffer telescopic rod is arranged in the middle of the bottom end of the fixed frame. The buffer telescopic rod is fixedly connected to the top end of the translation main frame. Limit blocks are respectively arranged on both sides of the buffer telescopic rod at the bottom end of the fixed frame. Limit bolts are respectively arranged on both sides of the buffer telescopic rod at the top end of the translation main frame. The two limit bolts can respectively abut against the two limit blocks to prevent the buffer telescopic rod from shortening further.

3. The painting device for long-shaped furniture boards according to claim 1, characterized in that, The flipping mechanism includes a flipping frame, a flipping cylinder, and flipping telescopic rods. The flipping frame is fixed to the frame body. The flipping cylinder is fixed to the top of the flipping frame and above the center of the frame body. The piston rod of the flipping cylinder is vertically downward, and the bottom end thereof is fixedly connected to one end of each of the two flipping telescopic rods. The other ends of the flipping telescopic rods are respectively hinged to the two mounting frames, and the flipping telescopic rods are horizontally arranged in the front-rear direction.

4. The paint spraying device for long-shaped furniture boards according to claim 1, characterized in that the lifting mechanism includes a lifting cylinder and a lifting table. The lifting cylinder is fixed to the workbench and below the center of the frame body. Its piston rod is vertically arranged and the top end is fixedly connected to the lifting table, and part of the connecting piece is fixed to the lifting table.

5. The paint spraying device for long-shaped furniture boards according to claim 1, characterized in that the placing plate where the corner clamping member is located is provided with a slide rail in the left-right direction. The corner clamping member is slidably mounted on the slide rail. A locking screw is inserted into the top surface of the corner clamping member, and the bottom end of the locking screw can be in close contact with the slide rail to fix the corner clamping member.

6. The paint spraying device for long-shaped furniture boards according to claim 1, characterized in that the left and right sides of the placing plate are provided with slide rails in the front-rear direction. The side clamping members are slidably mounted on the slide rails. A locking screw is inserted into the top surface of the side clamping member, and the bottom end of the locking screw can be in close contact with the slide rail to fix the side clamping member.

7. The paint spraying device for long-shaped furniture boards according to claim 6, characterized in that the side clamping member includes a mounting portion and a clamping portion. The mounting portion is slidably mounted on the slide rail. The clamping portion is provided with at least two adjusting screws arranged in the left-right direction. The adjusting screws pass through the mounting portion and are provided with locking nuts to lock the positions.

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