Intelligent spraying device for sofa production

Abstract

The application discloses a spraying device for intelligent sofa production in the technical field of sofa production, which comprises a console, a rotating frame rotatably connected to the console, a spraying module for spraying paint arranged on the console, and a plurality of clamping bases arranged on the console, wherein the rotating frame is slidably and rotatably connected to the same number of clamping top pieces as the clamping bases, the central axis of the clamping base coincides with the central axis of the corresponding clamping top piece, and the clamping base and the clamping top piece are both provided with a shielding piece. The two shielding pieces are closely attached to the two end surfaces of the sofa leg to form an effective physical barrier. When the spraying module is spraying, the shielding pieces block the end surfaces of the sofa leg, so that the paint cannot adhere to the end surface area of the sofa leg. This can significantly improve the bonding reliability of the connection part between the sofa leg and the main body, and ensure the assembly strength and product durability.

Description

Technical Field

[0001] This invention relates to the field of sofa manufacturing technology, and in particular to a spraying device for intelligent sofa manufacturing. Background Technology

[0002] As an innovative achievement that deeply integrates technology and modern home furnishings, smart sofas have gained popularity in the smart home market in recent years. While maintaining the comfortable seating and aesthetic design of traditional sofas, they incorporate advanced technologies such as intelligent control, electric adjustment, and ergonomic support, significantly improving ease of use and comfort. In the overall structural design, the sofa legs not only bear the key functions of load-bearing and stability but also profoundly affect the product's visual style and spatial harmony. Among them, columnar sofa legs, with their simple and smooth lines and light and stable shape, enhance the sense of space and showcase a strong modern aesthetic, thus becoming the mainstream design form for current smart sofas. In addition, to improve durability and appearance quality, the surface of sofa legs usually needs to be painted to enhance wear resistance, increase gloss, and achieve color uniformity, better matching the overall home style.

[0003] However, most sofa legs currently use a circular automatic spraying process, which requires pre-drilling fixing holes on the upper and lower end faces. The legs are then clamped and positioned by fitting the insert rods into the holes. This fixing method results in the end face area not being completely covered. During the spraying process, the paint easily adheres to the end face, forming a coating. When the sofa legs are subsequently glued to the sofa body, the paint layer on the end face will hinder the direct bonding between the adhesive and the substrate, reducing the bonding strength and thus affecting the firmness and long-term stability of the connection, weakening the support performance of the sofa legs. Summary of the Invention

[0004] In order to overcome the shortcomings mentioned in the background art, the present invention provides a spraying device for intelligent sofa production.

[0005] The technical implementation of the present invention is as follows: a spraying device for intelligent sofa production includes a control console, a rotating frame rotatably connected to the control console, a spraying module for spraying paint on the control console, a plurality of clamping bases on the control console, a number of clamping top pieces slidably and rotatably connected to the rotating frame, the central axis of the clamping bases coinciding with the central axis of the corresponding clamping top pieces, a first elastic element between the clamping top pieces and the rotating frame, and a shielding element for shielding the end face of the sofa legs on both the clamping bases and the clamping top pieces. The control console is equipped with a drive module for driving the plurality of clamping bases and the rotating frame to revolve synchronously and for the clamping bases to rotate independently.

[0006] More preferably, the shielding component consists of a rotating ring and a shielding cloth. The clamping base and the clamping top are respectively sealed and rotatably connected to the corresponding rotating ring. The rotating ring is fixedly connected to the shielding cloth. A second elastic element is provided between the clamping base and the clamping top and the corresponding rotating ring. Both the clamping base and the clamping top are provided with an adjustment component for adjusting the shielding area of ​​the corresponding shielding cloth on the end face of the sofa leg.

[0007] More preferably, the shielding cloth is an elastic cloth, and the elastic coefficient of the shielding cloth is the same as the elastic coefficient of the second elastic element.

[0008] More preferably, the adjustment assembly consists of a fixed plate, an adjustment plate, and several adjustment rods. The clamping base and the clamping top are respectively fixedly connected to the corresponding fixed plate. The fixed plate is provided with several straight sliding grooves distributed circumferentially, the number of which is the same as the number of adjustment rods. The adjustment plate is provided with several oblique sliding grooves distributed circumferentially, the number of which is the same as the number of adjustment rods. The clamping base and the clamping top are respectively rotatably connected to the corresponding adjustment plate. The several adjustment rods are respectively slidably connected between the straight sliding grooves on the corresponding fixed plate and the oblique sliding grooves on the corresponding adjustment plate. All of the several adjustment rods are fixedly connected to the corresponding shielding cloth.

[0009] More preferably, the adjusting disc is threadedly connected with a locking bolt, the locking bolt on the adjusting disc on the clamping base is used to press the clamping base to lock the adjusting disc, and the locking bolt on the adjusting disc on the clamping top is used to press the clamping top to lock the adjusting disc.

[0010] More preferably, both the clamping base and the clamping top are provided with negative pressure channels, and both the clamping base and the clamping top are rotatably connected with adapter rings that communicate with the corresponding negative pressure channels. The adapter rings on the clamping base and the adapter rings on the corresponding clamping top are fixedly connected and connected by a connecting pipe. The rotating frame is provided with negative pressure components in the same number as the connecting pipes. The negative pressure components are used to ensure that all the shielding cloths are tightly attached to the corresponding clamping base and the clamping top.

[0011] More preferably, the negative pressure assembly includes a number of fixed cylinders equal to the number of clamping bases. The fixed cylinders are fixedly connected to the rotating frame. A piston rod is slidably connected inside the fixed cylinder. The fixed cylinder is connected to the corresponding connecting pipe. A first locking block is fixedly connected to the piston rod. A first fixing ring is fixedly connected to the control console. The first fixing ring is provided with a first sliding groove. The first locking block slides within the first sliding groove.

[0012] More preferably, the first chute is composed of an arc-shaped chute, a vertical chute, and a connecting spiral chute connected end to end in sequence, and the spraying direction of the coating material of the spray module is towards the vertical chute.

[0013] More preferably, a drive rod is slidably connected inside the fixed cylinder, the drive rod is slidably connected to the corresponding piston rod, a third elastic element is provided between the drive rod and the corresponding piston rod, a second locking block is fixedly connected to the drive rod, a second fixing ring is fixedly connected to the control console, the second fixing ring is provided with a second sliding groove, and the second locking block slides within the second sliding groove.

[0014] More preferably, the second groove is composed of a first inclined groove and a second inclined groove connected end to end, with the high connection point of the first inclined groove and the second inclined groove on the opposite side of the vertical groove, and the low connection point of the first inclined groove and the second inclined groove on the same side as the vertical groove.

[0015] Compared with the prior art, the technical effects achieved by the present invention are as follows: 1. The present invention forms an effective physical barrier by tightly fitting two shielding parts to the two ends of the sofa leg. When the spraying module performs the spraying operation, the shielding parts block the end face of the sofa leg, so that the paint cannot adhere to the end face area of ​​the sofa leg. This can significantly improve the bonding reliability of the connection between the sofa leg and the main body, and ensure the assembly strength and product durability.

[0016] 2. The elastic covering cloth is automatically rolled up by a rotating ring, and the edges of the covering cloth are connected by several adjusting rods. The adjusting rods control the unfolding and shrinking of the covering cloth, thereby adjusting the coverage area of ​​the covering cloth to adapt to the covering of sofa legs of different diameters, making it highly adaptable.

[0017] 3. The downward movement of the drive rod causes the third elastic element to accumulate tension. The third elastic element applies the accumulated tension to the piston rod, which moves along the fixed cylinder to create a pulling force. The pulling force acts on the cover cloth, making the cover cloth fit tightly against the two end faces of the sofa legs, preventing paint from adhering to the end faces of the sofa legs and affecting the strength when it is connected to the sofa later. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the clamping base and clamping top of the present invention;

[0020] Figure 3 This is a three-dimensional structural diagram of the shielding component of the present invention;

[0021] Figure 4 This is a three-dimensional structural diagram of the rotating ring and shielding cloth of the present invention;

[0022] Figure 5 This is an exploded three-dimensional view of the fixed disk and adjusting disk of the present invention;

[0023] Figure 6 This is a three-dimensional structural diagram of the adapter ring and connecting pipe of the present invention;

[0024] Figure 7 This is a three-dimensional cross-sectional view of the fixing cylinder of the present invention;

[0025] Figure 8 This is an exploded three-dimensional view of the first and second fixing rings of the present invention.

[0026] Figure 9 This is a three-dimensional structural diagram of the vertical groove and the first inclined groove of the present invention.

[0027] The components are: 1-Control console, 2-Rotating frame, 3-Spraying module, 4-Clamping base, 5-Clamping top piece, 6-First elastic element, 7-Shielding piece, 201-Rotating ring, 202-Shielding cloth, 203-Second elastic element, 301-Fixing plate, 302-Adjusting plate, 303-Adjusting rod, 304-Locking bolt, 401-Negative pressure channel, 402-Adapter ring, 403-Connecting pipe, 404-Fixing cylinder, 405-Piston rod, 406-First locking block, 407-First fixing ring, 408-First sliding groove, 4081-Arc groove, 4082-Vertical groove, 4083-Connecting spiral groove, 501-Drive rod, 502-Third elastic element, 503-Second locking block, 504-Second fixing ring, 505-Second sliding groove, 5051-First inclined groove, 5052-Second inclined groove. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0029] Existing circular spraying requires drilling holes on the end face of the sofa leg for fixation, resulting in exposed end face. During spraying, the paint tends to adhere to the end face, forming a paint layer that hinders the direct bonding of the adhesive to the substrate, reduces the bonding strength, affects the connection firmness and durability, and thus weakens the supporting stability of the sofa leg, posing a structural safety hazard.

[0030] Example 1

[0031] This embodiment discloses a spraying device for intelligent sofa production, used to improve the spraying quality of sofa legs.

[0032] like Figures 1-3As shown, the system includes a control console 1, a rotating frame 2 rotatably connected to the upper side of the control console 1, a spraying module 3 for spraying paint on the control console 1, the spraying module 3 consisting of an electric slide rail and a nozzle, the electric slide rail being able to adjust the spraying position of the nozzle on the sofa legs, the spraying direction of the spraying module 3 always being horizontal towards the right side of the control console 1, the control console 1 having several clamping bases 4, the clamping bases 4 being evenly distributed circumferentially on the upper side of the control console 1, the rotating frame 2 being slidably and rotatably connected to clamping top pieces 5 in the same number as the clamping bases 4, the central axis of the clamping base 4 coinciding with the central axis of the corresponding clamping top piece 5, a first elastic element 6, which is a spring, is provided between the clamping top piece 5 and the rotating frame 2, used to support the clamping top piece 5 A downward force is applied to clamp the sofa leg between the clamping base 4 and the corresponding clamping top piece 5. Both the clamping base 4 and the clamping top piece 5 are provided with a shielding piece 7 for covering the end face of the sofa leg. The clamping base 4 and the clamping top piece 5 are fixedly connected to the shielding piece 7, but this is limited to this embodiment. The control console 1 is provided with a drive module for driving several clamping bases 4 and the rotating frame 2 to revolve synchronously and for the clamping base 4 to rotate on its own axis. The drive module is used to drive all the clamping bases 4 to revolve. At the same time, the drive module can drive all the clamping top pieces 5 and the corresponding clamping bases 4 to rotate synchronously through the rotating frame 2. The drive module can also drive the clamping base 4 located on the right side of the control console 1 to rotate on its own axis, that is, the clamping base 4 located at the spraying position of the spraying module 3.

[0033] Working principle: When this device is needed to spray paint the sofa legs, the operator turns on the drive module on the control panel 1. At this time, the drive module drives several clamping bases 4 to rotate counterclockwise periodically. At the same time, the drive module drives the clamping top piece 5 to rotate synchronously with the corresponding clamping base 4 through the rotating frame 2. When several clamping bases 4 are not rotating, the drive module drives the clamping base 4 on the right side of the control panel 1 to rotate on its own axis. At the same time, the spraying module 3 sprays the sofa leg in that position. Based on the above process, the operator loads and unloads the material from the left side of the control panel 1. This cycle is repeated to achieve continuous spraying of the sofa legs.

[0034] When loading materials, the worker first pulls up the clamping top piece 5 on the left side of the control panel 1, while the first elastic piece 6 is compressed. Then, the fixing hole at the bottom of the sofa leg is placed on the clamping base 4 on the left side of the control panel 1, and the bottom end face of the sofa leg is in contact with the lower shielding piece 7. The clamping top piece 5 is then lowered so that it enters the fixing hole at the top of the sofa leg, and the top end face of the sofa leg is in contact with the upper shielding piece 7. At this moment, under the action of the first elastic piece 6, the sofa leg is fixed between the clamping base 4 and the clamping top piece 5. When the sofa leg is rotated to the right side of the control panel 1 by the drive module on the control panel 1 for spraying, the drive module on the control panel 1 drives the sofa leg to rotate through the clamping base 4. The spraying module 3 sprays the outside of the sofa leg. Since both end faces of the sofa leg are blocked by the shielding piece 7 at this moment, the paint cannot adhere to the end faces of the sofa leg, thereby improving the subsequent connection strength between the sofa leg and the sofa.

[0035] After the sofa legs are finished being painted, the staff turns off the drive module on console 1. When the sofa legs need to be painted again, the staff repeats the above steps.

[0036] Example 2

[0037] This embodiment discloses a spraying device for intelligent sofa production, which is a further improvement on the basis of Embodiment 1.

[0038] Because columnar sofa legs come in various models, the area of ​​their upper and lower end faces varies greatly depending on the specifications. If a fixed-size area is used for masking, the adaptability is poor, and it is difficult to effectively cover end faces of different diameters. This can easily lead to problems such as incomplete or excessive masking, resulting in a decrease in spraying precision. This makes it impossible to meet the universality requirements of mass production of multiple product models, thus limiting production efficiency and process flexibility.

[0039] like Figure 4As shown, the shielding component 7 consists of a rotating ring 201 and a shielding cloth 202. The clamping base 4 and the clamping top 5 are respectively sealed and rotatably connected to the corresponding rotating ring 201. The rotating ring 201 is fixedly connected to the shielding cloth 202. The shielding cloth 202 is an annular and airtight cloth. The inner side of the shielding cloth 202 is fixedly connected to the rotating ring 201. In the initial state, the shielding cloth 202 is rolled up onto the adjacent rotating ring 201. A second elastic element 203 is provided between the clamping base 4 and the clamping top 5 and the corresponding rotating ring 201. The second elastic element 203 is a torsion spring, which is initially in a torsional state and is used to always keep the shielding cloth in a torsion state. 202. A winding force is applied. Both the clamping base 4 and the clamping top piece 5 are equipped with adjustment components for adjusting the area covered by the corresponding covering cloth 202 on the end face of the sofa leg. The covering cloth 202 is an elastic cloth. The covering cloth 202 is initially in an unstretched state. The elastic coefficient of the covering cloth 202 is the same as that of the second elastic member 203. When the outer side of the covering cloth 202 is subjected to force, the covering cloth 202 wound on the rotating ring 201 is released. At the same time, the outer side of the covering cloth 202 itself will undergo elastic deformation to improve the fit between the outer edge of the covering cloth 202 and the end face of the sofa leg.

[0040] like Figures 3-5 As shown, the adjustment assembly consists of a fixed plate 301, an adjustment plate 302, and several adjustment rods 303. The clamping base 4 and the clamping top piece 5 are fixedly connected to the corresponding fixed plate 301. The fixed plate 301 is provided with circumferentially evenly spaced straight sliding grooves, the number of which is the same as the number of adjustment rods 303. The adjustment plate 302 is provided with circumferentially evenly spaced oblique sliding grooves, the number of which is the same as the number of adjustment rods 303. The clamping base 4 and the clamping top piece 5 are rotatably connected to the corresponding adjustment plate 302. Several adjustment rods 303 are slidably connected between the corresponding straight sliding groove of the fixed plate 301 and the corresponding oblique sliding groove of the adjacent adjustment plate 302. The adjustment plate 302 can be rotated to push... Several adjusting rods 303 slide along the straight grooves of adjacent fixed plates 301 to control the unfolding and retraction of the covering cloth 202, thereby adjusting the coverage area of ​​the covering cloth 202 to adapt to the covering of sofa leg ends of different diameters. Several adjusting rods 303 are fixedly connected to the outer edge of the corresponding covering cloth 202. The adjusting plate 302 is threadedly connected with locking bolts 304. The locking bolts 304 on the adjusting plate 302 on the clamping base 4 are used to press the clamping base 4 to lock the adjusting plate 302. The locking bolts 304 on the adjusting plate 302 on the clamping top piece 5 are used to press the clamping top piece 5 to lock the adjusting plate 302. The locking bolts 304 are initially locked to the adjacent adjusting plates 302.

[0041] Working principle: Before spraying the sofa legs, the working principle is explained by adjusting the covering area of ​​the masking part 7 on the clamping top part 5. The operator rotates the locking bolt 304 on the clamping top part 5 to separate the locking bolt 304 from the clamping top part 5, releasing the locking bolt 304 from the adjusting plate 302. Then, the operator rotates the adjusting plate 302 according to the end face of the top of the sofa leg. Here, we take the increase of the covering area of ​​the masking part 7 as an example. The operator rotates the adjusting plate 302 counterclockwise, and the adjusting plate 302 pushes several adjusting rods 303 simultaneously along the fixed plate 3. 01 Slide outwards, and several adjusting rods 303 pull the shielding cloth 202 outwards. The shielding cloth 202 drives the rotating ring 201 to deflect. At the same time, the shielding cloth 202 is stretched and the second elastic element 203 is twisted until the shielding cloth 202 reaches the desired state. Then stop rotating the adjusting plate 302 and rotate the locking bolt 304 to lock the adjusting plate 302 again. Then adjust the shielding area of ​​the shielding member 7 on the clamping base 4 according to the above steps. After the shielding area of ​​the shielding member 7 is adjusted, start the spraying operation on the sofa legs.

[0042] Example 3

[0043] This embodiment discloses a spraying device for intelligent sofa production, which is a further improvement on embodiment 2.

[0044] Because the sofa legs need to rotate during spraying, the masking cloth 202 is locally subjected to centrifugal force during the rotation process, which can easily cause it to detach from the end face of the sofa legs, forming a gap. This allows the paint to seep into the gap and adhere to the end face, affecting the masking effect.

[0045] like Figure 3 , Figure 4 and Figure 6As shown, negative pressure channels 401 are provided at the joints between the clamping base 4 and the sofa leg, and at the joints between the clamping top piece 5 and the sofa leg. The joints between the clamping base 4 and the clamping top piece 5 and the sofa leg fixing holes are both provided with notches that communicate with the internal negative pressure channels 401. Simultaneously, the outer diameter of the joints between the clamping base 4 and the clamping top piece 5 and the sofa leg is smaller than the inner diameter of the sofa leg fixing holes. Taking the clamping top piece 5 as an example, after the covering cloth 202 on the clamping top piece 5 is attached to the upper surface of the sofa leg, the negative pressure channel 401 inside the clamping top piece 5 communicates with the gap between the sofa leg and the covering cloth 202 through the notches. Each of the upper parts is rotatably connected to a transition ring 402 that communicates with the corresponding negative pressure channel 401. The transition ring 402 on the clamping top part 5 is located above the adjusting plate 302 on its upper part, and the transition ring 402 on the clamping base 4 is located below the adjusting plate 302 on its upper part, which is used to accommodate the rotation of the clamping base 4 and the clamping top part 5. The transition ring 402 on the clamping base 4 and the transition ring 402 on the corresponding clamping top part 5 are fixedly connected together and communicated by a connecting pipe 403. The rotating frame 2 is provided with a negative pressure component in the same number as the connecting pipe 403. The negative pressure component is used to make all the shielding cloths 202 tightly fit the corresponding clamping base 4 and clamping top part 5 respectively.

[0046] like Figure 1 , Figure 2 and Figures 6-9 As shown, the negative pressure assembly includes a number of fixed cylinders 404 equal to the number of clamping bases 4. The fixed cylinders 404 are fixedly connected to the rotating frame 2 and are located outside the corresponding clamping bases 4. A piston rod 405 is slidably connected inside the fixed cylinder 404. The fixed cylinder 404 communicates with the corresponding connecting pipe 403. A first locking block 406 is fixedly connected to the lower part of the piston rod 405. A first fixing ring 407 is fixedly connected to the upper side of the control panel 1. The first fixing ring 407 is provided with a first sliding groove 408. The first locking block 406 slides within the first sliding groove 408. The first sliding groove 408 is composed of an arc-shaped groove 4081, a vertical groove 4082, and a connecting spiral groove 4083 connected end-to-end in sequence. The first locking block 406 slides along the arc-shaped groove 4081. When 81 slides, the height of piston rod 405 remains unchanged. When the first locking block 406 slides along the vertical groove 4082, the height of piston rod 405 decreases instantaneously. When the first locking block 406 slides along the connecting spiral groove 4083, the height of piston rod 405 gradually increases. The spraying direction of the coating of spray module 3 is towards the vertical groove 4082. The vertical groove 4082 is located on the right side of the first fixed ring 407. The connection between arc groove 4081 and connecting spiral groove 408 is located on the left side of the first fixed ring 407. The drive module of control console 1 drives the first locking block 406 to move counterclockwise synchronously through rotating frame 2, fixed cylinder 404 and piston rod 405, so that the first locking block 406 passes through arc groove 4081, vertical groove 4082 and connecting spiral groove 4083.

[0047] like Figures 7-9As shown, a drive rod 501 is slidably connected inside the fixed cylinder 404. The drive rod 501 is slidably connected to the corresponding piston rod 405. A third elastic element 502, which is a tension spring, is provided between the drive rod 501 and the corresponding piston rod 405 to pull the piston rod 405 to slide along the fixed cylinder 404. A second locking block 503 is fixedly connected to the drive rod 501. A second fixed ring 504 is fixedly connected to the control console 1. The second fixed ring 504 is located outside the first fixed ring 407. The central axis of the first fixed ring 407 coincides with the central axis of the second fixed ring 504. The second fixed ring 504 is provided with a second sliding groove 505. The second locking block 503 slides within the second sliding groove 505. The second sliding groove 505 consists of a first inclined groove 5051 and a second inclined groove. Composed of two inclined grooves 5051 and 5052 connected end to end, the first inclined groove 5051 and the second inclined groove 5052 are symmetrically distributed. When the second locking block 503 slides along the first inclined groove 5051, the height of the driving rod 501 gradually increases. When the second locking block 503 slides along the second inclined groove 5052, the height of the driving rod 501 gradually decreases. The high connection point of the first inclined groove 5051 and the second inclined groove 5052 is on the opposite side of the vertical groove 4082. The low connection point of the first inclined groove 5051 and the second inclined groove 5052 is on the same side as the vertical groove 4082. The high connection point of the first inclined groove 5051 and the second inclined groove 5052 is located on the left side of the second fixing ring 504. The low connection point of the first inclined groove 5051 and the second inclined groove 5052 is located on the right side of the second fixing ring 504.

[0048] Working principle: During the spraying process of sofa legs, the rotating frame 2 drives several fixed cylinders 404 to rotate synchronously, causing the fixed cylinders 404 to move synchronously with the corresponding clamping bases 4. That is, the fixed cylinders 404 periodically move counterclockwise. When the fixed cylinders 404 are located on the left side of the control panel 1, the operator places the unsprayed sofa leg on the clamping base 4 on the left side. At this time, the first locking block 406 is located at the connection between the arc groove 4081 and the connecting spiral groove 4083, and the second locking block 503 is located at the high connection between the first inclined groove 5051 and the second inclined groove 5052. When the device moves from the left side to the right side of the control panel 1, the first locking block 406 slides along the arc groove 4081, while the second locking block 503 moves downward along the second inclined groove 5052. At this moment, the second locking block 503 drives the drive rod 501 to move downward along the fixed cylinder 404, while the third elastic element 502 is stretched and applies a downward force to the piston rod 405. However, at this moment, the first locking block 406 is vertically limited by the arc groove 4081 and cannot slide downward until the fixed cylinder 404 moves to the right side of the control panel 1. At this moment, the corresponding sofa leg moves to the spraying position of the spray module 3.

[0049] When the sofa leg moves to the spraying position of the spray module 3, the second locking block 503 slides to the low connection point of the first inclined groove 5051 and the second inclined groove 5052, and the first locking block 406 slides to the junction of the arc groove 4081 and the vertical groove 4082. At this time, the first locking block 406 separates from the arc groove 4081. Under the action of the third elastic element 502, the piston rod 405 drives the first locking block 406 to slide vertically downward along the vertical groove 4082, and finally falls into the connection point of the vertical groove 4082 and the connecting spiral groove 4083. During this period, the piston rod 405 forms a pulling force along the fixed cylinder 404 and the corresponding connecting pipe 403. The pulling force is transmitted through the clamp. The negative pressure channel 401, notch, and fixing holes of the sofa leg on the base 4 and clamping top 5 act on the shielding cloth 202, so that the outer edge of the shielding cloth 202 is tightly attached to the end face of the sofa leg under the action of the extraction force. Then the spraying module 3 starts to spray the sofa leg. The drive rod 501 moves downward to make the third elastic element 502 accumulate tension. The tension accumulated by the third elastic element 502 acts on the piston rod 405. The piston rod 405 runs along the fixed cylinder 404 to form an extraction force. The extraction force acts on the shielding cloth 202, so that the shielding cloth 202 is tightly attached to the two end faces of the sofa leg, improving the adhesion strength of the shielding cloth 202 to the end face of the sofa leg.

[0050] After the sofa legs are painted, the fixing cylinder 404 continues to move counterclockwise from the right side of the control panel 1 to the right side. During this time, the first locking block 406 moves from the connection between the vertical groove 4082 and the connecting spiral groove 4083 to the connection between the arc groove 4081 and the connecting spiral groove 4083. At the same time, the piston rod 405 returns to the initial position of the corresponding fixing cylinder 404. The second locking block 503 moves along the first inclined groove 5051 from the low connection between the first inclined groove 5051 and the second inclined groove 5052 to the high connection. The drive rod 501 returns to the initial height, and the third elastic element 502 returns to the initial position. Then, the worker replaces the painted sofa leg with the sofa leg to be painted and continues the painting operation of the sofa leg. This continues until the sofa leg painting is completed. When the sofa leg needs to be painted again, the above steps are repeated.

[0051] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A spraying device for intelligent sofa production, comprising a control console (1), a rotating frame (2) rotatably connected to the control console (1), a spraying module (3) for spraying paint on the control console (1), a plurality of clamping bases (4) on the control console (1), the rotating frame (2) being slidably and rotatably connected to clamping top pieces (5) in the same number as the clamping bases (4), the central axis of the clamping base (4) coinciding with the central axis of the corresponding clamping top piece (5), and a first elastic member (6) provided between the clamping top piece (5) and the rotating frame (2), characterized in that: Both the clamping base (4) and the clamping top piece (5) are provided with a cover piece (7) for covering the end face of the sofa legs. The control console (1) is provided with a drive module for driving several clamping bases (4) and the rotating frame (2) to revolve synchronously and for the clamping base (4) to rotate on its own axis. The shielding component (7) consists of a rotating ring (201) and a shielding cloth (202). The clamping base (4) and the clamping top component (5) are respectively sealed and rotatably connected to the corresponding rotating ring (201). The rotating ring (201) is fixedly connected to the shielding cloth (202). A second elastic element (203) is provided between the clamping base (4) and the clamping top component (5) and the corresponding rotating ring (201). The clamping base (4) and the clamping top component (5) are each provided with an adjustment component for adjusting the shielding area of ​​the corresponding shielding cloth (202) on the end face of the sofa leg.

2. The spraying device for intelligent sofa production according to claim 1, characterized in that, The shielding cloth (202) is an elastic cloth, and the elastic coefficient of the shielding cloth (202) is the same as that of the second elastic element (203).

3. A spraying device for intelligent sofa production according to claim 1, characterized in that, The adjustment assembly consists of a fixed plate (301), an adjustment plate (302), and several adjustment rods (303). The clamping base (4) and the clamping top piece (5) are respectively fixedly connected to the corresponding fixed plate (301). The fixed plate (301) is provided with several straight sliding grooves distributed circumferentially, and the number of straight sliding grooves is the same as the number of adjustment rods (303). The adjustment plate (302) is provided with several oblique sliding grooves distributed circumferentially, and the number of oblique sliding grooves is the same as the number of adjustment rods (303). The clamping base (4) and the clamping top piece (5) are respectively rotatably connected to the corresponding adjustment plate (302). Several adjustment rods (303) are respectively slidably connected between the straight sliding grooves on the corresponding fixed plate (301) and the oblique sliding grooves on the corresponding adjustment plate (302). Several adjustment rods (303) are all fixedly connected to the corresponding shielding cloth (202).

4. A spraying device for intelligent sofa production according to claim 3, characterized in that, The adjusting disc (302) is threaded with a locking bolt (304). The locking bolt (304) of the adjusting disc (302) on the clamping base (4) is used to press the clamping base (4) to lock the adjusting disc (302). The locking bolt (304) of the adjusting disc (302) on the clamping top member (5) is used to press the clamping top member (5) to lock the adjusting disc (302).

5. A spraying device for intelligent sofa production according to claim 4, characterized in that, Negative pressure channels (401) are provided on both the clamping base (4) and the clamping top piece (5). A transition ring (402) communicating with the corresponding negative pressure channel (401) is sealed and rotatably connected to both the clamping base (4) and the clamping top piece (5). The transition ring (402) on the clamping base (4) and the transition ring (402) on the corresponding clamping top piece (5) are fixedly connected together and communicated with a connecting pipe (403). The rotating frame (2) is provided with the same number of negative pressure components as the connecting pipes (403). The negative pressure components are used to make all the shielding cloths (202) tightly fit the corresponding clamping base (4) and the clamping top piece (5).

6. A spraying device for intelligent sofa production according to claim 5, characterized in that, The negative pressure assembly includes a number of fixed cylinders (404) equal to the number of clamping bases (4). The fixed cylinders (404) are fixedly connected to the rotating frame (2). A piston rod (405) is slidably connected inside the fixed cylinder (404). The fixed cylinder (404) is connected to the corresponding connecting pipe (403). A first locking block (406) is fixedly connected to the piston rod (405). A first fixing ring (407) is fixedly connected to the control console (1). The first fixing ring (407) is provided with a first sliding groove (408). The first locking block (406) slides in the first sliding groove (408).

7. A spraying device for intelligent sofa production according to claim 6, characterized in that, The first chute (408) is composed of an arc groove (4081), a vertical groove (4082) and a connecting spiral groove (4083) connected end to end in sequence, and the spraying direction of the coating of the spraying module (3) is towards the vertical groove (4082).

8. A spraying device for intelligent sofa production according to claim 7, characterized in that, A drive rod (501) is slidably connected inside the fixed cylinder (404). The drive rod (501) is slidably connected to the corresponding piston rod (405). A third elastic element (502) is provided between the drive rod (501) and the corresponding piston rod (405). A second locking block (503) is fixedly connected to the drive rod (501). A second fixing ring (504) is fixedly connected to the control console (1). The second fixing ring (504) is provided with a second sliding groove (505). The second locking block (503) slides in the second sliding groove (505).

9. A spraying device for intelligent sofa production according to claim 8, characterized in that, The second groove (505) is composed of a first inclined groove (5051) and a second inclined groove (5052) connected end to end. The high connection point of the first inclined groove (5051) and the second inclined groove (5052) is on the opposite side of the vertical groove (4082), and the low connection point of the first inclined groove (5051) and the second inclined groove (5052) is on the same side as the vertical groove (4082).

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