Automated Primer Production Line for Door Panels

Abstract

The present invention relates to the technical field of door panel painting. An automatic primer painting production line for door panels is disclosed, which includes a machine base. A primer painting mechanism, a light curing mechanism, and a sanding mechanism are successively arranged on the machine base. A conveying mechanism for conveying door panels to the primer painting mechanism, a leveling mechanism located between the primer painting mechanism and the light curing mechanism, and a flipping mechanism for receiving door panels after sanding treatment are also arranged on the machine base; the leveling mechanism includes a box body, a leveling part for leveling the door panel after primer painting, and an air flow part for leveling the leveled door panel. The box body is provided with a feed inlet and a discharge outlet. This solution mainly solves the problem of poor leveling treatment effect on door panels in the current processing procedure of primer painting for door panels.

Description

Technical Field

[0001] The present invention relates to the technical field of painting door panels. Background Art

[0002] A door panel is one of the components of a house structure, and its main function is to enclose the house. With the development of social economy and the requirements of house decoration, etc., the processing requirements for door panels are getting higher and higher, such as carving, painting, and film laminating on door panels.

[0003] The door panel needs to go through multiple processing steps before leaving the factory. Among them, applying the primer to the door panel is particularly important, which will directly affect the appearance of the door panel. Currently, the processing procedures for applying the primer to the door panel include transportation, primer application, leveling, etc. In the actual processing process, the existing leveling processing method is mainly to place the door panel in a tunnel with air circulation, and use the freely flowing air to act on the door panel to volatilize the solvent volatilization gas on the surface of the door panel within a certain period of time to achieve the leveling treatment of the door panel. However, the flow direction of the air in the above method is uncertain, so that the amount and position of the air acting on the door panel are also uncertain, which directly leads to poor leveling treatment effect on the door panel. Summary of the Invention

[0004] The present invention aims to provide an automated production line for applying primer to door panels to solve the problem of poor leveling treatment effect on door panels in the current processing procedures for applying primer to door panels.

[0005] To achieve the above object, the basic scheme of the present invention is as follows: An automated production line for applying primer to door panels includes a machine base. An primer application mechanism, a light curing mechanism, and a sanding mechanism are sequentially arranged on the machine base. A conveying mechanism for conveying the door panel to the primer application mechanism, a leveling mechanism located between the primer application mechanism and the light curing mechanism, and a flipping mechanism for receiving the door panel after sanding treatment are also arranged on the machine base. The leveling mechanism includes a box body, a leveling part for leveling the door panel after primer application, and an air flow part for leveling the door panel after leveling. The box body is provided with a feed inlet and a discharge outlet.

[0006] Advantages of the basic scheme:

[0007] 1. This scheme realizes the primer application treatment on the door panel through the conveying mechanism, primer application mechanism, leveling mechanism, light curing mechanism, sanding mechanism, and flipping mechanism, and realizes leveling, light curing, and sanding treatments, effectively ensuring the processing quality of the door panel. Moreover, the flipping mechanism can also flip the door panel, which is convenient for applying primer to the other side of the door panel, with more automated operation and stronger practicability.

[0008] 2. In this solution, the door panel after applying the primer enters the box body from the feeding port. The leveling section can level the surface of the door panel, removing excess paint and making the surface of the door panel smoother and more even. The air flow section can level the surface of the door panel, fully volatilizing the solvent volatilization gas on the surface of the door panel. Compared with the prior art, this solution can effectively ensure the leveling effect on the door panel.

[0009] Furthermore, the leveling section includes a first power unit that drives the door panel to move towards the air flow section, several support shafts fixed on the box body, and a partition fixed on the box body. There is a gap between the first power unit and the side wall of the box body. On the support shaft, leveling blocks are slidably connected to the left and right along the axial direction of the support shaft. The two leveling blocks are arranged in contact with each other, and a flexible layer is provided at the bottom of the leveling block. Vertical grooves are provided on both the inner wall of the box body and the partition, and lifting plates are slidably connected in the vertical grooves. A plurality of lifting blocks are provided at the bottom of the lifting plate, and linkage blocks are hinged on both sides of the lifting block. The linkage block is hinged to the top of the leveling block. It also includes a pressing unit for driving the lifting plate to move vertically.

[0010] With the above settings, the door panel after applying the primer enters the box body and is placed on the first power unit. The pressing unit drives the lifting plate to move vertically back and forth. When the lifting plate moves downward, the lifting plate drives the lifting block to move downward. The lifting block drives the two leveling blocks to move in opposite directions through the linkage block, making the distance between the two leveling blocks larger. The movement of the two leveling blocks drives the flexible layer to act on the surface of the door panel, using the two flexible layers to remove the excess paint on the surface of the door panel, making the surface of the door panel smoother and more even. Moreover, the two flexible layers drive the excess paint to move to both sides. Since there is a gap between the power unit and the side wall of the box body, the excess paint drops to the bottom of the box body for collection.

[0011] After completing the leveling treatment of the surface of the door panel, the first power unit drives the door panel to move towards the air flow section.

[0012] Furthermore, the pressing unit includes a first motor fixed on the outer wall of the box body, a rotating shaft rotatably connected to the partition, and a first linkage shaft rotatably connected to the box body. The rotating shaft passes through the box body and is fixed to the output shaft of the first motor. A rubber sleeve for abutting against the surface of the door panel is sleeved on the rotating shaft. A first belt is sleeved between the first linkage shaft and the rotating shaft, and the first belt is located outside the box body. A cam is fixed on the first linkage shaft, and the cam abuts against the top of the lifting plate. A first spring is provided between the lifting plate and the vertical groove.

[0013] With the above settings, the output shaft of the first motor drives the rotating shaft to rotate. The rotating shaft drives the first linkage shaft to rotate through the first belt, and the first linkage shaft drives the cam to rotate, causing the convex part of the cam to intermittently press the lifting plate; when the convex part of the cam presses the lifting plate, the lifting plate moves downward and the first spring is compressed; when the convex part of the cam no longer presses the lifting plate, the lifting plate moves upward and resets under the action of the first spring.

[0014] The rotating shaft can also drive the rubber sleeve to rotate. When the door panel moves towards the air flow part, the surface of the door panel will abut against the rubber sleeve. The rubber sleeve can be used to level the surface of the door panel again, strengthening the leveling effect on the surface of the door panel; and, the rubber sleeve can also promote the movement of the door panel towards the air flow part.

[0015] Further, the air flow part includes a second power unit for the door panel to be output from the discharge port, a second linkage shaft rotatably connected to the box body, and a piston cylinder fixed inside the box body. The second power unit is lower than the first power unit, and an air flow hole is formed between the second power unit and the first power unit; a second belt is sleeved between the second linkage shaft and the rotating shaft, and the second belt is located outside the box body; a disc is fixed on the second linkage shaft, and a driving arm is hinged at the eccentric position of the disc; a piston block is slidably connected inside the piston cylinder, and the piston block is hinged to the free end of the driving arm; an air outlet pipe facing the air flow hole direction is communicated with the piston cylinder, and an air inlet hole is provided on the side wall of the piston cylinder.

[0016] With the above settings, after the door panel is leveled, it moves onto the second power unit; the rotating shaft can also drive the second linkage shaft to rotate through the second belt, the second linkage shaft drives the disc to rotate, and the disc drives the piston block to move vertically back and forth inside the piston cylinder through the driving arm. Gas is generated inside the piston cylinder, and the gas acts on the surface of the door panel through the air outlet pipe, thereby realizing continuous and stable leveling treatment of the surface of the door panel.

[0017] After the leveling treatment of the door panel is completed, the second power unit drives the door panel to move out through the discharge port.

[0018] Further, the conveying mechanism includes a negative pressure part for adsorbing the door panel and driving the door panel to move vertically, an adjusting part for driving the negative pressure part to move horizontally, and a conveying part for receiving the door panel after transfer. The transfer part includes a bracket, a plurality of transfer rollers for transferring the door panel, and a driving part for driving the transfer rollers to rotate. The transfer rollers are rotatably connected to the bracket, the transfer rollers are located below the negative pressure part, and the adjusting part drives the door panel to move onto the transfer rollers through the negative pressure part.

[0019] With the above settings, the negative pressure part is used to automatically adsorb the door panel, and then the adjustment part is used to transfer the wooden board to the transmission roller; the driving part drives the transmission roller to rotate, so as to realize the automatic transmission of the door panel. Compared with the prior art, the transmission of the door panel is realized by machinery instead of manual labor, effectively reducing the labor intensity of the staff and improving the transmission efficiency.

[0020] Further, the adjustment part includes a first cylinder fixed on the machine base and a chute opened on the machine base. A slider for driving the negative pressure part to move horizontally is slidably connected in the chute, and the output shaft of the first cylinder is fixed to the slider.

[0021] With the above settings, the output shaft of the first cylinder drives the slider to slide along the path of the chute, and the negative pressure part is driven to move horizontally by the slider.

[0022] Further, the negative pressure part includes a second cylinder fixed to the slider and a transfer plate fixed to the output shaft of the second cylinder. A negative pressure fan is provided on the transfer plate, at least one negative pressure groove is provided at the bottom of the transfer plate, and a negative pressure pipe is connected between the negative pressure fan and the negative pressure groove.

[0023] With the above settings, the negative pressure fan evacuates the negative pressure groove through the negative pressure pipe, so that the surface of the door panel is closely attached to the bottom of the transfer plate; the second cylinder drives the door panel to move vertically through the transfer plate.

[0024] Further, the flipping mechanism includes at least two flipping wheels. A connecting frame is provided between the two flipping wheels. A power part for driving the flipping wheels to rotate is provided on the machine base; a first roller group and a second roller group are sequentially arranged from top to bottom on the connecting frame. A gap for transmitting the door panel is formed between the first roller group and the second roller group; a third power unit for driving the first roller group and the second roller group to rotate on the connecting frame is also provided on the connecting frame, and the rotation directions of the first roller group and the second roller group are opposite.

[0025] With the above settings, the door panel that has completed the single-sided painting treatment is sent between the first roller group and the second roller group. The third power unit drives the first roller and the second roller to rotate, and the rotation directions of the first roller group and the second roller group are opposite, which can drive the door panel to move along the axial direction of the flipping wheel; moreover, the power part can drive the flipping wheel to rotate, thereby driving the door panel to flip. Cooperating with the rotating first roller group and second roller group can output the door panel, and the un-painted side of the door panel is turned upwards; compared with the prior art, this solution realizes the flipping of the door panel by machinery instead of manual labor, effectively improving the work efficiency.

[0026] Further, the connecting frame includes an upper connecting plate and a lower connecting plate, and a side plate is provided between the upper connecting plate and the lower connecting plate; the third power unit includes a second motor fixedly connected to the upper connecting plate and a support arm, a circular shaft is rotatably connected to the support arm, and a linkage is provided between the output shaft of the first motor and the circular shaft for driving the rotating shaft to rotate; the first roller group includes a plurality of first rollers rotatably connected to the side plate, and a driving gear is provided on the first roller; the second roller group includes a plurality of second rollers rotatably connected to the side plate, and a driven gear meshing with the driving gear is provided on the second roller; a third belt is provided between the circular shaft and the first roller.

[0027] Through the above settings, the two turning wheels are connected by the upper connecting plate, the lower connecting plate and the side plate, improving the stability of the synchronous rotation of the two turning wheels.

[0028] The second motor drives the circular shaft to rotate through the linkage, and the circular shaft drives the first roller to rotate through the third belt; the first roller drives the driving gear to rotate, and the driving gear drives the driven gear to rotate, thereby driving the second roller to rotate, so that the rotation direction of the second roller is opposite to that of the first roller; the rotation of the first roller and the second roller drives the door panel to move along the axial direction of the turning wheel.

[0029] Further, the power unit includes a chain, a third motor fixedly connected to the machine base and a support base, a driving sprocket is provided on the output shaft of the third motor, a driven sprocket is coaxially provided on the turning wheel, and the chain is sleeved between the driving sprocket and the driven sprocket; an annular groove is provided on the turning wheel, a limiting groove is provided at the top of the support base, and a support wheel is provided in the limiting groove, and the support wheel is slidably connected to the annular groove; side grooves are provided on both sides of the annular groove, and the support base is slidably connected to the side grooves; a guiding hole for the chain to pass through is provided on the support base, an auxiliary sprocket is rotatably connected in the guiding hole, and the chain is sleeved on the auxiliary sprocket, the driving sprocket and the driven sprocket; a reinforcing plate is provided between the support base and the machine base; a reinforcing bar is provided between the two turning wheels; a guiding groove is provided on the machine base, and the turning wheel is in clearance fit with the guiding groove.

[0030] Through the above settings, the output shaft of the third motor drives the driving sprocket to rotate, and the driving sprocket drives the driven sprocket to rotate through the chain, thereby driving the turning wheel to rotate; the turning wheel drives the door panel to turn over, and the cooperating rotating first roller and second roller can output the door panel, and moreover, the door panel is turned over so that the unpainted side of the door panel faces up.

[0031] During the rotation of the turning wheel, the support wheel slides in the annular groove. On the one hand, it can play a guiding role in the rotation of the turning wheel, improving the stability of the rotation of the turning wheel, and on the other hand, it can also play a supporting role for the turning wheel.

[0032] During the rotation of the flipping wheel, the sliding connection between the support base and the side groove can further improve the stability of the flipping wheel rotation.

[0033] During the rotation of the flipping wheel, the auxiliary sprocket can guide the movement of the chain, thereby improving the stability of the chain movement, that is, improving the stability of the flipping wheel rotation.

[0034] On the one hand, the reinforcing plate can support the support base, and on the other hand, it can also enhance the stability of the connection between the support base and the machine base. The reinforcing strip can improve the stability of the synchronous rotation of the two flipping wheels.

[0035] The guiding groove can guide the rotation of the flipping wheel and improve the stability of the flipping wheel rotation. Description of the Drawings

[0036] Figure 1 It is a schematic diagram of an embodiment of the automatic primer production line for door panels of the present invention;

[0037] Figure 2 It is a partial front view of the conveying mechanism;

[0038] Figure 3 It is Figure 2 The top view of the middle bracket;

[0039] Figure 4 It is a front view cross-sectional view of the leveling mechanism;

[0040] Figure 5 It is Figure 4 The partial left view of the middle support shaft;

[0041] Figure 6 It is a front view of the flipping mechanism;

[0042] Figure 7 Figure 6 The left view in

[0043] Figure 8 It is Figure 7 The enlarged view at position A in

[0044] Figure 9 It is Figure 7 The enlarged view at position B in Detailed Description of the Invention

[0045] The following is a further detailed description through specific embodiments:

[0046] The reference numerals in the drawings of the specification include: machine base 1, conveying mechanism 111, leveling mechanism 112, flipping mechanism 113, bracket 2, transmission roller 3, first cylinder 4, slider 5, second cylinder 6, transfer plate 7, negative pressure groove 8, negative pressure pipe 9, rubber layer 10, drive motor 11, drive belt 12, limiting arm 13, limiting plate 14, box body 15, first power shaft 16, support shaft 17, partition plate 18, leveling block 19, lifting plate 20, linkage block 21, rotating shaft 22, rubber sleeve 23, cam 24, first spring 25, second power shaft 26, piston cylinder 27, disc 28, drive arm 29, piston block 30, air outlet pipe 31, flipping wheel 32, upper connecting plate 33, lower connecting plate 34, side plate 35, first motor 36, support arm 37, round shaft 38, first rotating roller 39, driving gear 40, second rotating roller 41, driven gear 42, belt 43, small gear 44, large gear 45, chain 46, support seat 47, driving sprocket 48, driven sprocket 49, annular groove 50, limiting groove 51, support wheel 52, guiding hole 53, auxiliary sprocket 54, reinforcing plate 55, guiding groove 56, reinforcing strip 57.

[0047] Embodiment

[0048] Basically as shown in the appended Figure 1 to the appended Figure 9 As shown: The automatic primer coating production line for door panels includes a machine base 1. On the machine base 1, a conveying mechanism 111, a primer coating mechanism, a leveling mechanism 112, a light curing mechanism, a sanding mechanism, and a flipping mechanism 113 are sequentially arranged from left to right. The door panels pass through the conveying mechanism 111, the primer coating mechanism, the leveling mechanism 112, the light curing mechanism, the sanding mechanism, and the flipping mechanism 113 in sequence.

[0049] As shown in the appended Figure 2 and the appended Figure 3 As shown: The conveying mechanism 111 includes a negative pressure part for adsorbing the door panel and driving the door panel to move vertically, an adjusting part for driving the negative pressure part to move horizontally, and a conveying part for receiving the door panel after transfer. The transfer part includes a bracket 2, a plurality of transmission rollers 3 for transmitting the wooden board, and a driving part for driving the transmission rollers 3 to rotate. The transmission rollers 3 are rotatably connected to the bracket 2. The transmission rollers 3 are located below the negative pressure part. The adjusting part drives the door panel to move onto the transmission rollers 3 through the negative pressure part.

[0050] The adjusting part includes a first cylinder 4 and a chute. The first cylinder 4 is fixed to the top of the machine base 1 by bolts. The chute is opened on the top of the machine base 1. A slider 5 for driving the negative pressure part to move horizontally is horizontally slidably connected in the chute. The output shaft of the first cylinder 4 is fixedly connected to the slider 5.

[0051] The negative pressure part includes a second cylinder 6 fixedly connected to the slider 5 and a transfer plate 7 fixedly connected to the output shaft of the second cylinder 6. The second cylinder 6 is fixed to the bottom of the slider 5 by bolts, and the transfer plate 7 can be driven to move vertically back and forth through the output shaft of the second cylinder 6; a negative pressure fan is fixed to the top of the transfer plate 7 by bolts, and three negative pressure grooves 8 are equidistantly opened along the width direction of the transfer plate 7 at the bottom of the transfer plate 7. A negative pressure pipe 9 is connected between the negative pressure fan and the negative pressure grooves 8.

[0052] The driving part includes a driving motor 11 and a driving belt 12. The driving motor 11 is fixedly connected to the bracket 2 by bolts, and the driving belt 12 is sleeved on a plurality of transmission rollers 3. Limiting arms 13 are fixed to both sides of the bracket 2 by bolts, and a limiting plate 14 is integrally formed between the upper ends of the two limiting arms 13.

[0053] As shown in the Figure 4 and Figure 5 accompanying drawings: The leveling mechanism 112 includes a first power unit for driving the door panel to move towards the air flow part, a plurality of support shafts 17 fixedly connected to the box body 15, and a partition plate 18 fixedly connected to the box body 15. There is a gap between the first power unit and the side wall of the box body 15; the first power unit includes a first power motor and a first power shaft 16 rotatably connected to the box body 15. The first power motor is fixed to the outer wall of the box body 15 by bolts, the output shaft of the first power motor is fixedly connected to the leftmost first power shaft 16, and a first power belt 43 is sleeved between the plurality of first power shafts 16.

[0054] On the support shaft 17, leveling blocks 19 are slidably connected symmetrically left and right along the axial direction of the support shaft 17. The two leveling blocks 19 are abutted against each other, and a flexible layer is bonded to the bottom of the leveling block 19. In this embodiment, the flexible layer is a sponge layer; vertical grooves are opened on both the inner wall of the box body 15 and the partition plate 18. A lifting plate 20 is arranged between the two vertical grooves, and the lifting plate 20 slides in the vertical grooves; a plurality of lifting blocks are integrally formed at the bottom of the lifting plate 20, and the number of the lifting blocks is the same as the number of the support shafts 17; linkage blocks 21 are hinged to both sides of the lifting blocks, and the linkage blocks 21 are hinged to the top of the leveling blocks 19.

[0055] It further includes an extrusion unit for driving the lifting plate 20 to move vertically. The extrusion unit includes a first motor 36 fixed to the outer wall of the box body 15, a rotating shaft 22 rotatably connected to the partition plate 18, and a first linkage shaft rotatably connected to the box body 15. The rotating shaft 22 passes through the box body 15 and is fixedly connected to the output shaft of the first motor 36. A rubber sleeve 23 for abutting against the surface of the door panel is sleeved on the rotating shaft 22; a first belt 43 is sleeved between the first linkage shaft and the rotating shaft 22, and the first belt 43 is located outside the box body 15; a cam 24 is fixedly connected to the first linkage shaft, and the cam 24 abuts against the top of the lifting plate 20; a first spring 25 is fixedly connected between the lifting plate 20 and the vertical groove.

[0056] The air flow section includes a second power unit for outputting the door panel from the discharge port, a second linkage shaft rotatably connected to the box body 15, and a piston cylinder 27 fixedly connected inside the box body 15. The second power unit includes a second power motor and a second power shaft 26 rotatably connected to the box body 15. The second power motor is fixed to the outer wall of the box body 15 by bolts. The output shaft of the second power motor is fixedly connected to the second power shaft 26 at the left end, and a second power belt 43 is sleeved between several second power shafts 26. The second power unit is lower than the first power unit, that is, the horizontal height of the second power shaft 26 is lower than the horizontal height of the first power shaft 16, and the height difference between the second power shaft 26 and the first power shaft 16 forms an air flow hole.

[0057] A second belt 43 is sleeved between the second linkage shaft and the rotating shaft 22, and the second belt 43 is located outside the box body 15. A disc 28 is fixedly connected to the second linkage shaft, and a driving arm 29 is hinged at the eccentric position of the disc 28. A piston block 30 is slidably connected inside the piston cylinder 27, and the piston block 30 is hinged to the free end of the driving arm 29. An air outlet pipe 31 communicating with the piston cylinder 27 in the direction of the air flow hole is provided on the piston cylinder 27, and a one-way valve for the air flow to flow unidirectionally from the piston cylinder 27 to the air flow hole is provided on the air outlet pipe 31. An air inlet hole is opened on the side wall of the piston cylinder 27.

[0058] As shown in the attached Figure 6 attachment Figure 7 attachment Figure 8 attachment Figure 9 and attachment

[0059] A power section for driving the turning wheel 32 to rotate is provided on the machine base 1. The power section includes a chain 46, a third motor fixedly connected to the machine base 1, and a support base 47. The third motor is fixed to the machine base 1 by bolts, and the support base 47 is welded to the machine base 1. A driving sprocket 48 is fixedly connected to the output shaft of the third motor, a driven sprocket 49 is coaxially fixedly connected to the turning wheel 32, and the chain 46 is sleeved between the driving sprocket 48 and the driven sprocket 49. An annular groove 50 is opened on the turning wheel 32, a limiting groove 51 is opened at the top of the support base 47, and a support wheel 52 is welded in the limiting groove 51. The support wheel 52 is slidably connected to the annular groove 50. Side grooves are opened on both sides of the annular groove 50, and the support base 47 is slidably connected to the side grooves.

[0060] A guiding hole 53 for the chain 46 to pass through is opened on the support base 47, and an auxiliary sprocket 54 is rotatably connected in the guiding hole 53. The chain 46 is sleeved on the auxiliary sprocket 54, the driving sprocket 48, and the driven sprocket 49.

[0061] A first roller set and a second roller set are sequentially arranged on the connecting frame from top to bottom, and a gap for transmitting the door panel is formed between the first roller set and the second roller set; a third power unit for driving the first roller set and the second roller set to rotate on the connecting frame is further provided on the connecting frame, and the rotation directions of the first roller set and the second roller set are opposite.

[0062] The third power unit includes a second motor fixedly connected to the upper connecting plate 33 and a support arm 37. The second motor is fixed to the upper connecting plate 33 by bolts. The number of the support arms 37 is two, and both support arms 37 are fixed to the upper connecting plate 33 by bolts. A round shaft 38 is rotatably connected to the support arm 37; a linkage for driving the round shaft 38 to rotate is provided between the output shaft of the second motor and the round shaft 38. The linkage includes a small gear 44 and a large gear 45 meshing with the small gear 44. The small gear 44 is fixedly connected to the output shaft of the second motor, and the large gear 45 is fixedly connected to the round shaft 38.

[0063] The first roller set includes a plurality of first rollers 39 rotatably connected to the side plate 35, and a driving gear 40 is fixedly connected to the first roller 39; the second roller set includes a plurality of second rollers 41 rotatably connected to the side plate 35, and a driven gear 42 meshing with the driving gear 40 is fixedly connected to the second roller 41; a third belt 43 is sleeved between the round shaft 38 and the first roller 39.

[0064] In this embodiment, the primer application mechanism selects an automatic painting machine with the brand of Mingfeng and the model of MFAD - 1603; the light curing mechanism selects a light curing machine with the brand of Jinhui and the model of JHUV; the sanding mechanism selects a sanding machine with the brand of Gejin and the model of SL1300A - 1.

[0065] The specific implementation process is as follows:

[0066] During operation, the second cylinder 6 is started. The output shaft of the second cylinder 6 drives the transfer plate 7 to move downward, so that the bottom of the transfer plate 7 is in contact with the surface of the door panel, and the second cylinder 6 is closed; the negative pressure fan is started, and the negative pressure fan evacuates the negative pressure groove 8 through the negative pressure pipe 9, so that the surface of the door panel is tightly attached to the bottom of the transfer plate 7; the door panel is adsorbed at three different positions to improve the adsorption stability of the wooden board, and further improve the transfer stability of the door panel; the second cylinder 6 is started, and the second cylinder 6 drives the door panel to move upward through the transfer plate 7, and the second cylinder 6 is closed; the first cylinder 4 is started, and the output shaft of the first cylinder 4 drives the slider 5 and the transfer plate 7 to move in the direction of the transmission roller 3. When the slider 5 drives the door panel to move above the transmission roller 3, the first cylinder 4 is closed; the second cylinder 6 is started, and the output shaft of the second cylinder 6 drives the transfer plate 7 and the door panel to move downward, so that the door panel is in contact with the transmission roller 3, and the second cylinder 6 is closed; the negative pressure fan is closed, and the negative pressure effect on the door panel disappears, so that the door panel is separated from the transfer plate 7, thereby realizing the automatic transfer of the wooden board to the transmission roller 3; the second cylinder 6 is started, and the output shaft of the second cylinder 6 drives the transfer plate 7 to rise to the initial position, and the second cylinder 6 is closed; the first cylinder 4 is started to drive the slider 5 and the transfer plate 7 to move to the right to the initial position, and the first cylinder 4 is closed, which is convenient for the transfer of the next door panel.

[0067] The drive motor 11 is started. The output shaft of the drive motor 11 drives the transmission roller 3 to rotate, and at the same time drives a plurality of transmission rollers 3 to rotate through the drive belt 12, so that the door panel on the transmission roller 3 is transmitted to the next station for processing. The limit arm 13 can prevent the door panel from falling off the transmission roller 3; the distance between the limit plate 14 and the transmission roller 3 is used to identify the transmission of the fixed-height wooden board, thereby preventing the transmission of the door panel with a height exceeding the distance between the limit plate 14 and the transmission roller 3.

[0068] In this embodiment, a rubber layer 10 is provided along the edge of the negative pressure groove 8 at the bottom of the transfer plate 7. The rubber layer 10 is used to contact the door panel instead of the transfer plate 7 directly, effectively avoiding abrasion of the door panel.

[0069] The door panel is transmitted into the primer application mechanism, and the primer application mechanism applies primer to the door panel; after the primer application is completed, the door panel enters the box body 15 through the feed port, and the door panel is located on the first power shaft 16; the first motor 36 is started, and the output shaft of the first motor 36 drives the rotating shaft 22 to rotate. The rotating shaft 22 drives the first linkage shaft to rotate through the first belt 43, and the first linkage shaft drives the cam 24 to rotate, so that the convex part of the cam 24 intermittently presses the lifting plate 20; when the convex part of the cam 24 presses the lifting plate 20, the lifting plate 20 moves downward, and the first spring 25 is compressed; when the convex part of the cam 24 no longer presses the lifting plate 20, the lifting plate 20 moves upward and resets under the action of the first spring 25.

[0070] When the lifting plate 20 moves downward, the lifting plate 20 drives the lifting block to move downward. The lifting block drives the two leveling blocks 19 to move in opposite directions through the linkage block 21, increasing the distance between the two leveling blocks 19. The movement of the two leveling blocks 19 drives the flexible layers to act on the surface of the door panel, using the two flexible layers to remove the excess paint on the surface of the door panel, making the surface of the door panel smoother and more even. Moreover, the two flexible layers drive the excess paint to move to both sides. Since there is a gap between the power unit and the side wall of the box body 15, the excess paint drops to the bottom of the box body 15 for collection.

[0071] After the leveling treatment of the door panel surface is completed, the first power motor is started. The first power motor drives the first power shaft 16 at the left end to rotate. Under the action of the first power belt 43, multiple first power shafts 16 rotate, and then the door panel is driven to move through the multiple first power shafts 16.

[0072] The rotating shaft 22 can also drive the rubber sleeve 23 to rotate. When the door panel moves to the right, the surface of the door panel will abut against the rubber sleeve 23. The rubber sleeve 23 can level the surface of the door panel again, strengthening the leveling effect on the surface of the door panel. Moreover, the rubber sleeve 23 can also promote the rightward movement of the door panel.

[0073] After the door panel is leveled, it moves to the second power shaft 26. Since the height difference between the second power shaft 26 and the first power shaft 16 forms an air flow hole, the air flow hole faces the surface of the door panel. The rotating shaft 22 can also drive the second linkage shaft to rotate through the second belt 43. The second linkage shaft drives the disc 28 to rotate. The disc 28 drives the piston block 30 to move vertically back and forth in the piston cylinder 27 through the driving arm 29. Gas is generated in the piston cylinder 27, and the gas acts on the surface of the door panel through the air outlet pipe 31, thereby realizing continuous and stable leveling treatment of the door panel surface.

[0074] After the leveling treatment of the door panel surface is completed, the second power motor is started. The second power motor drives the second power shaft 26 at the left end to rotate. Under the action of the second power belt 43, multiple second power shafts 26 rotate, and then the door panel is driven to move out of the box body 15 through the discharge port by the multiple second power shafts 26.

[0075] After the door panel is leveled, it is subjected to light curing treatment by the light curing mechanism, that is, the primer on the surface of the door panel is cured. After the door panel is cured, the door panel is sanded by the sanding mechanism to improve the flatness and smoothness of the door panel surface.

[0076] After the sanding treatment of the door panel is completed, the door panel enters between the first roller 39 and the second roller 41; the second motor and the third motor are started. The output shaft of the second motor drives the small gear 44 to rotate, the small gear 44 drives the large gear 45 to rotate, the large gear 45 drives the round shaft 38 to rotate, and the round shaft 38 drives the first roller 39 to rotate through the third belt 43; the first roller 39 drives the driving gear 40 to rotate, the driving gear 40 drives the driven gear 42 to rotate, and then drives the second roller 41 to rotate, so that the rotation direction of the second roller 41 is opposite to that of the first roller 39; the rotation of the first roller 39 and the second roller 41 drives the door panel to move along the axial direction of the turning wheel 32; and, the rotation of the small gear 44 drives the large gear 45 to rotate, which has a decelerating effect, making the rotation of the first roller 39 and the second roller 41 drive the door panel to move more smoothly.

[0077] The output shaft of the third motor drives the driving sprocket 48 to rotate, the driving sprocket 48 drives the driven sprocket 49 to rotate through the chain 46, and then the turning wheel 32 rotates; the turning wheel 32 drives the door panel to turn over, and the rotating first roller 39 and second roller 41 can output the door panel, and, turn over the door panel, so that the unpainted side of the door panel faces up, which is convenient for applying primer to the unpainted side of the door panel.

[0078] During the rotation of the turning wheel 32, the supporting wheel 52 slides in the annular groove 50. On the one hand, it can play a guiding role in the rotation of the turning wheel 32, improving the stability of the rotation of the turning wheel 32. On the other hand, it can also play a supporting role for the turning wheel 32; during the rotation of the turning wheel 32, through the sliding connection between the supporting seat 47 and the side groove, the stability of the rotation of the turning wheel 32 can be further improved. During the rotation of the turning wheel 32, the auxiliary sprocket 54 can play a guiding role in the movement of the chain 46, and then improve the stability of the movement of the chain 46, that is, improve the stability of the rotation of the turning wheel 32.

[0079] In this embodiment, a reinforcing plate 55 is fixed between the supporting seat 47 and the machine base 1 by bolts; on the one hand, the reinforcing plate 55 can support the supporting seat 47, and on the other hand, it can also strengthen the stability of the connection between the supporting seat 47 and the machine base 1.

[0080] In this embodiment, a guiding groove 56 is formed on the machine base 1, and the turning wheel 32 is in clearance fit with the guiding groove 56; through the guiding groove 56, it can play a guiding role in the rotation of the turning wheel 32, improving the stability of the rotation of the turning wheel 32.

[0081] In this embodiment, a reinforcing bar 57 is welded between the two turning wheels 32, and through the reinforcing bar 57, the stability of the synchronous rotation of the two turning wheels 32 can be improved.

[0082] The above are only embodiments of the present invention, and common general knowledge of specific structures and / or characteristics in the solution is not described in detail herein. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope claimed in this application shall be subject to the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to interpret the content of the claims.

Claims

1. Automatic primer production line for door panels, including a machine base, on which a primer application mechanism, a light curing mechanism, and a sanding mechanism are sequentially arranged, characterized in that: The machine base is also provided with a conveying mechanism for conveying the door panels to the primer application mechanism, a leveling mechanism located between the primer application mechanism and the light curing mechanism, and a flipping mechanism for receiving the door panels after sanding treatment; the leveling mechanism includes a box body, a leveling part for leveling the door panels after primer application, and an air flow part for leveling the leveled door panels, and the box body is provided with a feed port and a discharge port; The leveling part includes a first power unit for driving the door panel to move towards the air flow part, a plurality of support shafts fixed on the box body, and a partition plate fixed on the box body. There is a gap between the first power unit and the side wall of the box body; the leveling blocks are slidably connected to the left and right along the axial direction of the support shaft on the support shaft, the two leveling blocks are abutted against each other, and a flexible layer is provided at the bottom of the leveling block; vertical grooves are provided on the inner wall and the partition plate of the box body, and a lifting plate is slidably connected in the vertical groove; a plurality of lifting blocks are provided at the bottom of the lifting plate, and linkage blocks are hinged on both sides of the lifting block, and the linkage block is hinged to the top of the leveling block; it also includes an extrusion unit for driving the lifting plate to move vertically; The extrusion unit includes a first motor fixed on the outer wall of the box body, a rotating shaft rotatably connected to the partition plate, and a first linkage shaft rotatably connected to the box body. The rotating shaft passes through the box body and is fixed to the output shaft of the first motor, and a rubber sleeve for abutting against the surface of the door panel is sleeved on the rotating shaft; a first belt is sleeved between the first linkage shaft and the rotating shaft, and the first belt is located outside the box body; a cam is fixed on the first linkage shaft, and the cam abuts against the top of the lifting plate; a first spring is provided between the lifting plate and the vertical groove; The air flow part includes a second power unit for outputting the door panel from the discharge port, a second linkage shaft rotatably connected to the box body, and a piston cylinder fixed in the box body. The second power unit is lower than the first power unit, and an air flow hole is formed between the second power unit and the first power unit; a second belt is sleeved between the second linkage shaft and the rotating shaft, and the second belt is located outside the box body; a disc is fixed on the second linkage shaft, and a driving arm is hinged at the eccentric position of the disc; a piston block is slidably connected in the piston cylinder, and the piston block is hinged to the free end of the driving arm; an air outlet pipe facing the air flow hole direction is communicated with the piston cylinder, and an air inlet hole is provided on the side wall of the piston cylinder; The conveying mechanism includes a negative pressure part for adsorbing the door panel and driving the door panel to move vertically, an adjusting part for driving the negative pressure part to move horizontally, and a conveying part for receiving the transferred door panel. The conveying part includes a bracket, a plurality of conveying rollers for conveying the door panel, and a driving part for driving the conveying rollers to rotate. The conveying rollers are rotatably connected to the bracket, the conveying rollers are located below the negative pressure part, and the adjusting part drives the door panel to move onto the conveying rollers through the negative pressure part; the driving part includes a driving motor and a driving belt. The driving motor is fixed on the bracket by bolts, and the driving belt is sleeved on a plurality of conveying rollers; The flipping mechanism includes at least two flipping wheels, a connecting frame is provided between the two flipping wheels, and a power unit for driving the flipping wheels to rotate is provided on the machine base; a first roller group and a second roller group are sequentially arranged on the connecting frame from top to bottom, and a gap for transmitting the door panel is formed between the first roller group and the second roller group; a third power unit for driving the first roller group and the second roller group to rotate on the connecting frame is further provided on the connecting frame, and the rotation directions of the first roller group and the second roller group are opposite.

2. The automatic primer production line for door panels according to claim 1, characterized in that: The adjusting part includes a first cylinder fixed on the machine base and a sliding groove opened on the machine base, a slider for driving the negative pressure part to move horizontally is slidably connected in the sliding groove, and the output shaft of the first cylinder is fixed to the slider.

3. The automatic primer production line for door panels according to claim 2, characterized in that: The negative pressure part includes a second cylinder fixed to the slider and a transfer plate fixed to the output shaft of the second cylinder, a negative pressure fan is provided on the transfer plate, at least one negative pressure groove is provided at the bottom of the transfer plate, and a negative pressure pipe is communicated between the negative pressure fan and the negative pressure groove.

4. The automatic primer production line for door panels according to claim 3, characterized in that: The connecting frame includes an upper connecting plate and a lower connecting plate, and a side plate is provided between the upper connecting plate and the lower connecting plate; the third power unit includes a second motor fixed to the upper connecting plate and a support arm, a round shaft is rotatably connected to the support arm, and a linkage for driving the rotating shaft to rotate is provided between the output shaft of the first motor and the round shaft; the first roller group includes a plurality of first rollers rotatably connected to the side plate, and a driving gear is provided on the first roller; the second roller group includes a plurality of second rollers rotatably connected to the side plate, and a driven gear meshing with the driving gear is provided on the second roller; a third belt is provided between the round shaft and the first roller.

5. The automatic primer production line for door panels according to claim 4, characterized in that: The power unit includes a chain, a third motor fixed to the machine base and a support seat, a driving sprocket is provided on the output shaft of the third motor, a driven sprocket is coaxially provided on the flipping wheel, and the chain is sleeved between the driving sprocket and the driven sprocket; an annular groove is provided on the flipping wheel, a limiting groove is provided at the top of the support seat, and a support wheel is provided in the limiting groove, and the support wheel is slidably connected with the annular groove; side grooves are provided on both sides of the annular groove, and the support seat is slidably connected with the side grooves; a guiding hole for the chain to pass through is provided on the support seat, an auxiliary sprocket is rotatably connected in the guiding hole, and the chain is sleeved on the auxiliary sprocket, the driving sprocket and the driven sprocket; a reinforcing plate is provided between the support seat and the machine base; a reinforcing bar is provided between the two flipping wheels; a guiding groove is provided on the machine base, and the flipping wheel is in clearance fit with the guiding groove.

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