A spraying device and spraying method for producing injection molded parts for new energy vehicles

Abstract

The present invention relates to the field of automobile parts processing technology, and specifically to a spraying device and a spraying method for the production of injection molded parts on new energy vehicles. The device comprises a paint spray box and two turntables, each of which is provided with four sets of clamps. A paint spraying mechanism is provided between the two turntables. Each paint spraying mechanism comprises a nozzle rack with two rotating arms, a central nozzle and two side nozzles. A balancing mechanism is provided on the side of each turntable. Each balancing mechanism comprises a circular slide and four cranks. The clamp of the device adopts four adjustable clamping arms made of frosted aluminum alloy to clamp the injection molded parts. The parts made of this material can be adjusted to any shape by manual bending, so that the clamp can be suitable for injection molded parts of any shape and different sizes. The device divides the nozzle into a central nozzle and two side nozzles, and can spray different parts of the injection molded parts to improve the integrity of the injection molded parts spraying.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile parts processing, and in particular to a spraying device and a spraying method for producing injection molded parts for new energy vehicles. Background Art

[0002] Automotive injection molded parts, that is, product accessories made of plastic on automobiles, have the advantages of light weight, excellent comprehensive physical and chemical properties, outstanding decorative effects and good processing performance. When processing automotive injection molded parts, it is necessary to spray paint on the injection molded parts. The traditional paint spraying device includes a clamp for clamping the injection molded parts and a paint spray nozzle for spraying paint. The injection molded parts remain in a fixed state during the painting stage. Due to the different types of injection molded parts, their shapes will also vary greatly. However, the traditional paint spraying device can only be used for the same type of injection molded parts and cannot be used for different types of injection molded parts, which makes the use of the traditional paint spraying device very limited. In addition, the nozzle structure in the traditional paint spraying device is single and the spraying direction cannot be adjusted. Due to the uneven surface of the injection molded parts, there will be dead corners on the injection molded parts that cannot be sprayed, which reduces the spraying effect. Therefore, it is necessary to provide a spraying device and a spraying method for the production of injection molded parts on new energy vehicles to solve the above problems. Summary of the Invention

[0003] Based on this, it is necessary to provide a spraying device and a spraying method for the production of injection molded parts for new energy vehicles in response to existing technical problems.

[0004] In order to solve the problems of the prior art, the technical solution adopted by the present invention is as follows: a spraying device for the production of injection molded parts on new energy vehicles, comprising a paint spray box, two double doors are provided on both sides of the paint spray box, and two coaxial turntables are provided in a symmetrical state in the vertical direction in the paint spray box. The axial direction of each turntable is horizontal and each turntable rotates 45 degrees in a single time. Four groups of clamps for clamping injection molded parts are evenly distributed on each turntable along its circumferential direction. Two symmetrical spray mechanisms are provided between the two turntables for spraying paint to a group of clamps on the corresponding turntables. Each spray mechanism includes a nozzle rack with two rotating arms. , a central nozzle located in the middle of the nozzle rack and used for spraying paint to the center of the injection molded part, and two side nozzles located on the two rotating arms and used for spraying paint to the curved surfaces on both sides of the injection molded part respectively. A balancing mechanism is provided on the side of each turntable. The balancing mechanism ensures that the injection molded part clamped by the corresponding clamp always maintains an unchanged state as it rotates with the turntable. Each balancing mechanism includes a circular slide eccentrically arranged with the corresponding turntable and four cranks provided on the corresponding turntable. One end of each crank is axially connected to the corresponding turntable. Each set of clamps is provided on the axial connection end of the crank, and the other end of each crank can slide along the circular trajectory of the circular slide.

[0005] Furthermore, a horizontal rotating shaft is provided in the paint spray box, and two turntables are coaxially fixed to the two ends of the rotating shaft. A horizontal motor is fixed on the outer wall of the paint spray box, and the output shaft of the motor passes horizontally through the paint spray box and is coaxially connected to one end of the rotating shaft through a coupling.

[0006] Furthermore, each clamp includes a connecting seat and four adjustable clamping arms distributed in a matrix. Each adjustable clamping arm is in the shape of a long rod and is made of frosted aluminum alloy. One end of each adjustable clamping arm is fixedly connected to the connecting seat, and the other end of each adjustable clamping arm is provided with a detachable clamping head, wherein each connecting seat is provided on the axial connection end of the corresponding crank.

[0007] Furthermore, each adjustable clamping arm is provided with a clamping head at one end thereof connected to a clamping head fixing seat, the clamping head fixing seat comprises a columnar connecting portion fixedly connected to one end of the corresponding adjustable clamping arm and a columnar fixing portion for mounting the corresponding clamping head, the columnar fixing portion is coaxial with the columnar connecting portion and is connected end to end, the columnar fixing portion is an open structure at one end away from the columnar connecting portion and a columnar receiving groove is provided in the columnar fixing portion, and two symmetrical No. 1 arc-shaped stoppers are formed on the peripheral wall of the columnar receiving groove near the opening of the columnar fixing portion, and one end of each No. 1 arc-shaped stopper is formed There is a transverse stopper connected to the bottom of the cylindrical receiving groove, and the two transverse stops are spaced 180° apart along the circumferential direction of the cylindrical receiving groove. One end of each chuck is formed with a rotary head that can be inserted into the corresponding cylindrical receiving groove. Each rotary head is formed with two No. 2 arc-shaped stops that can be respectively fitted with the two No. 1 arc-shaped stops by rotating the rotary head and are used to prevent the rotary head from being pulled out of the cylindrical receiving groove. After each No. 2 arc-shaped stopper is fitted with the corresponding No. 1 arc-shaped stopper, one end of the No. 2 arc-shaped stopper conflicts with the corresponding transverse stopper to limit the rotation of the rotary head.

[0008] Furthermore, each nozzle rack also has a vertical fixed arm and a horizontal adjustment arm. The lower end of the vertical fixed arm is fixedly connected to the bottom wall of the paint spray box, one end of the horizontal adjustment arm is axially connected to the upper part of the vertical fixed arm, the axial direction of the axial connection end of the horizontal adjustment arm is horizontal, the other end of the horizontal adjustment arm faces the corresponding turntable and the other end of the horizontal adjustment arm is fixed with a transverse fixed arm, each rotating arm is axially connected to one end of the corresponding transverse fixed arm, the axial direction of the axial connection end of each rotating arm is vertical, and each rotating arm is provided with an elastic locking piece for locking with one end of the corresponding transverse fixed arm after the rotating arm is rotated.

[0009] Furthermore, a groove is formed at one end of each rotating arm, and each groove divides the corresponding rotating arm into two upper and lower arm sections. A lug is formed at one end of each transverse fixed arm and is located in the corresponding groove and is used to connect to the rotating arm axis. Each elastic locking member includes:

[0010] The vertical adjustment rod has each rotating arm axially connected to the corresponding lug through the adjustment rod. The upper and lower ends of the adjustment rod are respectively extended with two arm bodies. The lower end of the adjustment rod is threaded, and the top end of the adjustment rod is coaxially formed with a circular stop block.

[0011] The spring is vertically sleeved on the adjusting rod, and the two ends of the spring respectively contact the circular block and the corresponding rotating arm;

[0012] The circular chuck is fixed horizontally on the top of the arm body located below, and the top of the circular chuck is formed with a plurality of strip blocks evenly distributed and diverging along its circumference;

[0013] A limit nut is screwed onto the lower end of the adjusting rod, and the limit nut is used to interfere with the corresponding rotating arm;

[0014] The bottom of each lug is provided with a plurality of strip grooves which can be engaged with a plurality of strip blocks.

[0015] Furthermore, the central nozzle includes a vertical frame and nozzles fixed on the vertical frame at equal intervals along the length of the vertical frame. Each nozzle is cylindrical and its axis is perpendicular to the vertical frame. A connecting pipe sleeve is provided at one end of each nozzle. The structure of each side nozzle is consistent with that of the central nozzle, wherein the output direction of each nozzle in the central nozzle is horizontally toward the corresponding turntable, the vertical frame in the central nozzle is connected to the middle part of the corresponding horizontal fixed arm, and in the initial state, the output directions of the nozzles in the two side nozzles are opposite, and the vertical frame in each side nozzle is connected to the corresponding rotating arm.

[0016] Furthermore, each circular slide is fixed on the inner wall of one side of the paint spray box, and each crank has a coaxially formed end without a connecting seat with a guide column extending into the corresponding circular slide.

[0017] A spraying device for producing injection molded parts for new energy vehicles, the use method of which includes the following steps:

[0018] S1, place several injection molded parts vertically or horizontally in the corresponding fixture, and close the two doors of the spray booth;

[0019] S2, start the motor, and the two turntables drive all the injection molded parts to rotate 45 degrees in the same direction synchronously. That is, when one of the injection molded parts rotates to the paint spraying mechanism, the turntable stops rotating;

[0020] S3, connect a hose with paint liquid to the connecting pipe sleeve of each nozzle, so that the central nozzle sprays paint on the center of the injection molded part, and the two side nozzles spray paint on the curved surface on both sides of the injection molded part. After all the injection molded parts are painted, open the two double doors of the paint spray box and remove all the sprayed injection molded parts.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] First, the fixture of this device uses four adjustable clamping arms made of frosted aluminum alloy to clamp the injection molded parts. Made of this material, it can be adjusted to any shape by manual bending, so that the fixture can be applied to injection molded parts of any shape and size.

[0023] Secondly, the device divides the nozzle into a central nozzle and two side nozzles, which can spray different parts of the injection molded parts to improve the integrity of the injection molded parts spraying, and the two side nozzles are arranged on two rotating arms. The output direction of a single side nozzle can be adjusted by rotating the rotating arms, so that the side nozzle can fully spray the concave or convex surface of one side of the injection molded part, and will not cause some dead corners of the injection molded parts that cannot be sprayed. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the motion trajectory of the turntable and the guide slide in the embodiment;

[0025] Figure 2 It is a schematic diagram of the three-dimensional structure of the embodiment;

[0026] Figure 3 yes Figure 2 A1 is a partial enlarged schematic diagram;

[0027] Figure 4 It is a left side view of the embodiment;

[0028] Figure 5 yes Figure 4 Sectional view along line AA;

[0029] Figure 6 yes Figure 5 A2 is a partial enlarged schematic diagram;

[0030] Figure 7 yes Figure 4 Cross-sectional view along line BB;

[0031] Figure 8 yes Figure 7 A3 is a partial enlarged schematic diagram;

[0032] Figure 9 2 is a schematic diagram of the three-dimensional structure of the paint spraying mechanism of the embodiment;

[0033] Figure 10 1 is a schematic diagram of the three-dimensional structure of the nozzle holder of the embodiment;

[0034] Figure 11 yes Figure 10 A4 is a partial enlarged schematic diagram;

[0035] Figure 12 2 is a schematic diagram of the three-dimensional structure of the clamp of the embodiment;

[0036] Figure 13 yes Figure 12 A5 is an enlarged schematic diagram of the part pointed to by A5.

[0037] The numbers in the figure are: 1, spray box; 2, double door; 3, turntable; 4, rotating arm; 5, guide column; 6, center nozzle; 7, side nozzle; 8, circular slide; 9, crank; 10, rotating shaft; 11, motor; 12, coupling; 13, connecting seat; 14, adjustable clamping arm; 15, clamping head; 16, clamping head fixing seat; 17, columnar connecting part; 18, columnar fixing part; 19, columnar receiving groove; 20, No. 1 arc stop Block; 21. Horizontal block; 22. Rotating head; 23. No. 2 arc block; 24. Vertical fixed arm; 25. Horizontal adjustment arm; 26. Horizontal fixed arm; 27. Groove; 28. Arm body; 29. ​​Lug; 30. Adjusting rod; 31. Round stop block; 32. Spring; 33. Round chuck; 34. Strip block; 35. Limit nut; 36. Strip groove; 37. Vertical frame; 38. Sprinkler; 39. Connecting pipe sleeve. DETAILED DESCRIPTION

[0038] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] refer to Figures 1 to 13 The spraying device for producing injection molded parts for new energy vehicles shown in the figure includes a paint spray box 1, two double doors 2 are respectively provided on both sides of the paint spray box 1, and two coaxial turntables 3 are arranged in a symmetrical state in the vertical direction in the paint spray box 1. The axial direction of each turntable 3 is horizontal and each turntable 3 rotates 45° at a time. Four groups of clamps for clamping injection molded parts are evenly distributed on each turntable 3 along its circumferential direction. Two symmetrical paint spraying mechanisms are provided between the two turntables 3 and are used to spray paint to a group of clamps on the corresponding turntable 3. Each paint spraying mechanism includes a nozzle rack with two rotating arms 4, a nozzle rack provided in the middle of the nozzle rack and used to A central nozzle 6 for spraying paint to the center of the injection molded part and two side nozzles 7 respectively arranged on the two rotating arms 4 and used to spray paint to the curved surfaces on both sides of the injection molded part. A balancing mechanism is provided on the side of each turntable 3. The balancing mechanism ensures that the injection molded part clamped by the corresponding fixture always maintains an unchanged state as it rotates with the turntable 3. Each balancing mechanism includes a circular slide 8 eccentrically arranged with the corresponding turntable 3 and four cranks 9 arranged on the corresponding turntable 3. One end of each crank 9 is axially connected to the corresponding turntable 3. Each set of clamps is arranged on the axial connection end of the crank 9. The other end of each crank 9 can slide along the circular trajectory of the circular slide 8.

[0040] A horizontal rotating shaft 10 is rotated in the paint spray box 1, and the two turntables 3 are coaxially fixed to the two ends of the rotating shaft 10. A horizontal motor 11 is fixed on the outer wall of the paint spray box 1. The output shaft of the motor 11 passes horizontally through the paint spray box 1 and is coaxially connected to one end of the rotating shaft 10 through a coupling 12.

[0041] After the motor 11 is started, the two turntables 3 are driven to rotate synchronously in the same direction by driving the rotating shaft 10. The motor 11 is a stepping motor and rotates 45° at a time. Each time the motor 11 rotates, one of the clamps can be moved to the paint spraying mechanism so that the paint spraying mechanism can paint the injection molded parts clamped by the clamp.

[0042] Each clamp includes a connecting seat 13 and four adjustable clamping arms 14 distributed in a matrix. Each adjustable clamping arm 14 is in the shape of a long rod and is made of frosted aluminum alloy. One end of each adjustable clamping arm 14 is fixedly connected to the connecting seat 13, and the other end of each adjustable clamping arm 14 is provided with a detachable clamping head 15, wherein each connecting seat 13 is arranged on the axial connection end of the corresponding crank 9.

[0043] The adjustable clamping arms 14 are similar to the lazy brackets and are made of frosted aluminum alloy. The adjustable clamping arms 14 made of this material can be manually bent and adjusted into any shape, so that the four adjustable clamping arms 14 provided on the connecting base 13 can be applied to injection molded parts of any shape and different sizes;

[0044] The clamping head 15 on each adjustable clamping arm 14 is used to clamp the injection molded parts. For injection molded parts of different shapes, clamping heads 15 of different shapes can be processed. In this way, the adjustable clamping arm 14 can clamp injection molded parts of different shapes by replacing the clamping head 15.

[0045] Each adjustable clamping arm is provided with a clamping head 15 at one end thereof and is connected to a clamping head fixing seat 16. The clamping head fixing seat 16 includes a columnar connecting portion 17 fixedly connected to one end of the corresponding adjustable clamping arm 14 and a columnar fixing portion 18 for mounting the corresponding clamping head 15. The columnar fixing portion 18 is coaxial with the columnar connecting portion 17 and is connected end to end. The end of the columnar fixing portion 18 away from the columnar connecting portion 17 is an open structure and a columnar receiving groove 19 is provided in the columnar fixing portion 18. The columnar receiving groove 19 is formed with two symmetrical No. 1 arc-shaped blocks 20 on the peripheral wall near the opening of the columnar fixing portion 18. One end of each No. 1 arc-shaped block 20 is formed with a columnar The bottom of the columnar receiving groove 19 is connected to a transverse stopper 21, and the two transverse stops 21 are spaced 180° apart in the circumferential direction of the columnar receiving groove 19. One end of each chuck 15 is formed with a turntable 22 that can be inserted into the corresponding columnar receiving groove 19. Each turntable 22 is formed with two second arc-shaped stops 23 that can respectively fit with the two first arc-shaped stops 20 by rotating the turntable 22 and are used to prevent the turntable 22 from being pulled out of the columnar receiving groove 19. After each second arc-shaped stopper 23 fits with the corresponding first arc-shaped stopper 20, one end of the second arc-shaped stopper 23 conflicts with the corresponding transverse stopper 21 to limit the rotation of the turntable 22.

[0046] When installing the chuck 15, first rotate it until the two No. 2 arc-shaped stops 23 on the rotating head 22 are misaligned with the corresponding two No. 1 arc-shaped stops 20, so that the rotating head 22 can be inserted into the columnar receiving groove 19. Thereafter, the chuck 15 is rotated to make the rotating head 22 rotate in the columnar receiving groove 19, and drive the two No. 2 arc-shaped stops 23 to rotate until they are fitted with the corresponding two No. 1 arc-shaped stops 20. At this time, one end of each No. 2 arc-shaped stop 23 will conflict with the corresponding transverse stop 21, so that the chuck 15 cannot rotate. At the same time, the two No. 1 arc-shaped stops 20 respectively block the two No. 2 arc-shaped stops 23, so that the rotating head 22 cannot be pulled out from the columnar receiving groove 19, thereby achieving the fixation of the chuck 15. When disassembling the chuck 15, reverse the chuck 15 to make the two No. 2 arc-shaped stops 23 misaligned with the two No. 1 arc-shaped stops 20, and then pull out the chuck 15.

[0047] Each nozzle rack also has a vertical fixed arm 24 and a horizontal adjustment arm 25. The lower end of the vertical fixed arm 24 is fixedly connected to the bottom wall of the paint spray box 1, and one end of the horizontal adjustment arm 25 is axially connected to the upper part of the vertical fixed arm 24. The axial direction of the axial connection end of the horizontal adjustment arm 25 is horizontal, and the other end of the horizontal adjustment arm 25 faces the corresponding turntable 3. The other end of the horizontal adjustment arm 25 is fixed with a transverse fixed arm 26. Each rotating arm 4 is axially connected to one end of the corresponding transverse fixed arm 26. The axial direction of the axial connection end of each rotating arm 4 is vertical. Each rotating arm 4 is provided with an elastic locking piece for locking the rotating arm 4 with one end of the corresponding transverse fixed arm 26 after the rotating arm 4 rotates.

[0048] By rotating the horizontal adjustment arm 25, the horizontal fixed arm 26 can be raised or lowered, similar to the adjustment of the fan head, so that the entire paint spraying mechanism can be adjusted to the optimal angle for spraying before painting;

[0049] Since the protruding or recessed parts on the curved surface on both sides of different injection molded parts are different, the corresponding side nozzles 7 are adjusted by rotating the two rotating arms 4, so that the side nozzles 7 on the rotating arms 4 are adjusted to the optimal angle that can completely spray the curved surface of the injection molded part before painting.

[0050] Each rotating arm 4 has a groove 27 at one end, and each groove 27 divides the corresponding rotating arm 4 into two upper and lower arm parts 28. Each transverse fixed arm 26 has a lug 29 formed at one end, which is located in the corresponding groove 27 and is used for axial connection with the rotating arm 4. Each elastic locking member includes:

[0051] A vertical adjustment rod 30 is provided, through which each rotating arm 4 is axially connected to the corresponding lug 29. The upper and lower ends of the adjustment rod 30 extend through the two arm bodies 28 respectively. The lower end of the adjustment rod 30 is threaded, and the top end of the adjustment rod 30 is coaxially formed with a circular stop 31.

[0052] The spring 32 is vertically sleeved on the adjusting rod 30, and the two ends of the spring 32 are respectively in contact with the circular block 31 and the corresponding rotating arm 4;

[0053] The circular chuck 33 is horizontally fixed on the top of the arm 28 located below. The top of the circular chuck 33 is formed with a plurality of strip blocks 34 evenly distributed and diverging along its circumference.

[0054] A limiting nut 35 is screwed onto the lower end of the adjusting rod 30 , and the limiting nut 35 is used to interfere with the corresponding rotating arm 4 ;

[0055] The bottom of each lug 29 is provided with a plurality of strip grooves 36 that can be engaged with a plurality of strip blocks 34 .

[0056] One end of each rotating arm 4 with a groove 27 is made of elastic material, so that the two arms 28 can move toward each other by squeezing;

[0057] When the rotating arm 4 is pivoted, the groove 27 is inserted into the corresponding lug 29, and then the adjusting rod 30 with the spring 32 is passed downward through one arm 28 of the rotating arm 4, the lug 29 and the other arm 28 in sequence, and finally the upper and lower ends of the adjusting rod 30 are both passed through the rotating arm 4;

[0058] When the rotating arm 4 is fixed to the lug 29, the circular stop block 31 is pressed downward so that the spring 32 contacts the arm body 28 located above the rotating arm 4 and fits in with the top of the lug 29. At the same time, the limiting nut 35 is screwed onto the lower end of the adjusting rod 30. The limiting nut 35 moves upward to contact the arm body 28 located below, driving the circular chuck 33 upward to fit in with the lug 29, and the several strip blocks 34 located on the top of the circular chuck 33 are engaged in the several strip grooves 36 at the bottom of the lug 29, thereby achieving locking between the rotating arm 4 and the lug 29.

[0059] When the rotating arm 4 needs to be adjusted, the limiting nut 35 is rotated in the opposite direction so that the arm body 28 located below drives the circular chuck 33 to separate from the lug 29. After that, the rotating arm 4 can be rotated to adjust the angle. After the adjustment is completed, the limiting nut 35 can be rotated again so that the several strip blocks 34 are engaged in the several strip grooves 36, and finally the rotating arm 4 and the lug 29 are locked again.

[0060] The central nozzle 6 includes a vertical frame 37 and nozzles 38 fixed on the vertical frame 37 at equal intervals along the length of the vertical frame 37. Each nozzle 38 is columnar and its axis is perpendicular to the vertical frame 37. A connecting pipe sleeve 39 is provided at one end of each nozzle 38. The structure of each side nozzle 7 is consistent with that of the central nozzle 6, wherein the output direction of each nozzle 38 in the central nozzle 6 is horizontally toward the corresponding turntable 3, the vertical frame 37 in the central nozzle 6 is connected to the middle part of the corresponding horizontal fixed arm 26, and in the initial state, the output directions of the nozzles 38 in the two side nozzles 7 are opposite, and the vertical frame 37 in each side nozzle 7 is connected to the corresponding rotating arm 4.

[0061] The vertical frame 37 is used to fix several nozzles 38, and the connecting pipe sleeve 39 is used to connect a hose with paint liquid. In the initial state, that is, when the angles of the two rotating arms 4 are not adjusted, the output directions of the nozzles 38 in the two side nozzles 7 are facing each other. Thereafter, the output direction of the nozzles 38 in the corresponding side nozzles 7 can be adjusted by rotating the rotating arms 4, so that the nozzles 38 in each side nozzle 7 can be aligned with the corresponding curved surface of the injection molded part for spraying paint.

[0062] Each circular slideway 8 is fixed on the inner wall of one side of the paint spray box 1 , and each crank 9 has a guide column 5 coaxially formed on one end thereof not provided with the connecting seat 13 and extending into the corresponding circular slideway 8 .

[0063] After the turntable 3 rotates, it will first drive one end of the crank 9 to move, and the guide column 5 located in the circular slide 8 will be pulled and then move. In this process, the movement trajectory of the end of the crank 9 driven by the turntable 3 is referenced. Figure 1 As shown in a (this motion trajectory is also the motion trajectory of the turntable 3), the motion trajectory of the guide column 5 is referenced Figure 1As shown in b, the crank 9 will rotate a certain angle after the turntable 3 rotates, but due to the limiting effect of the circular slide 8, the crank 9 will not rotate a circle. The eccentric distance between the circular slide 8 and the turntable 3 is the length of the crank 9 (refer to Figure 1 c);

[0064] like Figure 1 As shown in FIG. 3 , c and d respectively represent the lengths of the same crank 9 when it rotates to different positions. The lengths of the two are the same, and since the length of the crank 9 is constant, the crank 9 will remain horizontal no matter where it rotates to, so that the clamp on the crank 9 will be driven by the turntable 3 to rotate as shown in FIG. Figure 1 As shown in the motion trajectory a, each fixture will maintain its state unchanged, and thus the injection molded parts fixed on the fixture will always maintain their state unchanged no matter where the turntable 3 rotates to, so that the painting mechanism can paint the injection molded parts with consistent state, ensuring that each injection molded part in the same batch is completely sprayed.

[0065] A spraying method for a spraying device for producing injection molded parts for new energy vehicles, the method comprising the following steps:

[0066] S1, place several injection molded parts vertically or horizontally in corresponding fixtures, and close the two double doors 2 of the spray booth 1;

[0067] First, open the two side doors 2 of the paint spray box 1 and place several injection molded parts in the fixtures on the corresponding turntable 3. After the injection molded parts are fixed, close the two side doors 2.

[0068] S2, start the motor 11, and the two turntables 3 drive all the injection molded parts to rotate 45 degrees in the same direction synchronously. That is, when one of the injection molded parts rotates to the paint spraying mechanism, the turntable 3 stops rotating;

[0069] By rotating the turntable 3 by 45 degrees each time, it is ensured that there is always a clamp facing the painting mechanism after each rotation of the turntable 3, so that the painting mechanism can spray the injection molded part clamped by the clamp.

[0070] S3, connect a hose with paint liquid to the connecting pipe sleeve 39 of each nozzle 38, so that the central nozzle 6 sprays paint on the center of the injection molded part, and at the same time the two side nozzles 7 spray paint on the curved surface parts on both sides of the injection molded part. After all the injection molded parts are painted, open the two double doors 2 of the paint spray box 1 and remove all the sprayed injection molded parts.

[0071] Before spraying, the spraying angles of the central nozzle 6 and the two side nozzles 7 can be adjusted by rotating the horizontal adjustment arm 25. The horizontal adjustment arm 25 is adjusted as a whole, so that the central nozzle 6 and the two side nozzles 7 can face the current injection-molded part. Thereafter, the spraying angles of the two side nozzles 7 can be adjusted by rotating the two rotating arms 4 respectively. The rotating arm 4 is adjusted individually, so that the side nozzles 7 can fully spray the concave or convex surface on one side of the injection-molded part. When spraying, close the two double doors 2, and after spraying, let the injection-molded parts dry for a period of time, then open the two double doors 2 and remove all the injection-molded parts.

[0072] The above embodiments merely represent one or several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A spraying device for the production of injection molded parts for new energy vehicles, comprising a spray box with two double doors on both sides, characterized in that: The invention also includes two coaxial turntables arranged in a symmetrical state in the vertical direction in the paint spraying box, the axis of each turntable is horizontal and each turntable rotates 45 degrees in a single time, and four groups of clamps for clamping injection molded parts are evenly distributed along the circumference of each turntable. Two symmetrical paint spraying mechanisms are arranged between the two turntables and are used to spray paint on a group of clamps on the corresponding turntables. Each paint spraying mechanism includes a nozzle rack with two rotating arms, a central nozzle arranged in the middle of the nozzle rack and used to spray paint on the center of the injection molded part, and two side nozzles respectively arranged on the two rotating arms and used to spray paint on the curved surface on both sides of the injection molded part. Each turntable is provided with a balancing mechanism on the side, which ensures that the injection molded parts clamped by the corresponding clamps always maintain the same state when following the rotation of the turntable. Each balancing mechanism includes a circular slide eccentrically arranged with the corresponding turntable and four cranks arranged on the corresponding turntable. One end of each crank is connected to the corresponding turntable axis. Each set of clamps is arranged on the axis-connected end of the crank, and the other end of each crank can slide along the circular track of the circular slide. Each clamp includes a connecting seat and four adjustable clamping arms distributed in a matrix. Each adjustable clamping arm is in the shape of a long rod and is made of frosted aluminum alloy. One end of each adjustable clamping arm can slide along the circular track of the circular slide. The ends are fixedly connected to the connecting seat, and the other end of each adjustable clamping arm is provided with a detachable clamping head, wherein each connecting seat is provided on the axial connection end of the corresponding crank, and the end of each adjustable clamping arm provided with the clamping head is connected to the clamping head fixing seat, and the clamping head fixing seat includes a columnar connecting portion fixedly connected to one end of the corresponding adjustable clamping arm and a columnar fixing portion for installing the corresponding clamping head, the columnar fixing portion and the columnar connecting portion are coaxial and connected end to end, the end of the columnar fixing portion away from the columnar connecting portion is an open structure, and a columnar receiving groove is provided in the columnar fixing portion, and two symmetrical shapes are formed on the peripheral wall of the columnar receiving groove near the opening of the columnar fixing portion There are two arc-shaped blocks in the state, one end of each arc-shaped block No. 1 is formed with a transverse block connected to the bottom of the columnar receiving groove, and the two transverse blocks are spaced 180° apart along the circumferential direction of the columnar receiving groove. One end of each chuck is formed with a turntable that can be inserted into the corresponding columnar receiving groove, and each turntable is formed with two arc-shaped blocks No. 2 that can respectively fit with the two arc-shaped blocks No. 1 by rotating the turntable and are used to prevent the turntable from being pulled out of the columnar receiving groove. After each arc-shaped block No. 2 fits with the corresponding arc-shaped block No. 1, one end of the arc-shaped block No. 2 conflicts with the corresponding transverse block to limit the rotation of the turntable.

2. A spraying device for producing injection molded parts for new energy vehicles according to claim 1, characterized in that: A horizontal rotating shaft is provided in the paint spray box, and two turntables are coaxially connected to the two ends of the rotating shaft. A horizontal motor is fixed on the outer wall of the paint spray box, and the output shaft of the motor passes horizontally through the paint spray box and is coaxially connected to one end of the rotating shaft through a coupling.

3. A spraying device for producing injection molded parts for new energy vehicles according to claim 1, characterized in that: Each nozzle rack also has a vertical fixed arm and a horizontal adjustment arm. The lower end of the vertical fixed arm is fixedly connected to the bottom wall of the paint spray box. One end of the horizontal adjustment arm is axially connected to the vertical fixed arm. The axial direction of the axial connection end of the horizontal adjustment arm is horizontal. The other end of the horizontal adjustment arm faces the corresponding turntable and the other end of the horizontal adjustment arm is fixed with a horizontal fixed arm. Each rotating arm is axially connected to one end of the corresponding horizontal fixed arm. The axial direction of the axial connection end of each rotating arm is vertical. Each rotating arm is provided with an elastic locking piece for locking with one end of the corresponding horizontal fixed arm after the rotating arm is rotated.

4. A spraying device for producing injection molded parts for new energy vehicles according to claim 3, characterized in that: Each rotating arm has a groove at one end, and each groove divides the corresponding rotating arm into two upper and lower arm parts. Each transverse fixed arm has a lug formed at one end, which is located in the corresponding groove and is used to connect with the rotating arm shaft. Each elastic locking member includes: The vertical adjustment rod has each rotating arm axially connected to the corresponding lug through the adjustment rod. The upper and lower ends of the adjustment rod are respectively extended with two arm bodies. The lower end of the adjustment rod is threaded, and the top end of the adjustment rod is coaxially formed with a circular stop block. The spring is vertically sleeved on the adjusting rod, and the two ends of the spring respectively contact the circular block and the corresponding rotating arm; The circular chuck is fixed horizontally on the top of the arm body located below, and the top of the circular chuck is formed with a plurality of strip blocks evenly distributed and diverging along its circumference; A limit nut is screwed onto the lower end of the adjusting rod, and the limit nut is used to interfere with the corresponding rotating arm; The bottom of each lug is provided with a plurality of strip grooves which can be engaged with a plurality of strip blocks.

5. A spraying device for producing injection molded parts for new energy vehicles according to claim 3, characterized in that: The central nozzle includes a vertical frame and nozzles fixed on the vertical frame at equal intervals along the length of the vertical frame. Each nozzle is cylindrical and its axis is perpendicular to the vertical frame. A connecting pipe sleeve is provided at one end of each nozzle. The structure of each side nozzle is consistent with that of the central nozzle, wherein the output direction of each nozzle in the central nozzle is horizontally toward the corresponding turntable. The vertical frame in the central nozzle is connected to the middle part of the corresponding horizontal fixed arm. In the initial state, the output directions of the nozzles in the two side nozzles are opposite, and the vertical frame in each side nozzle is connected to the corresponding rotating arm.

6. A spraying device for producing injection molded parts for new energy vehicles according to claim 1, characterized in that: Each circular slide is fixed on the inner wall of one side of the paint spray box, and one end of each crank without a connecting seat is coaxially formed with a guide slide column extending into the corresponding circular slide.

7. A spraying method for a spraying device for producing injection molded parts for new energy vehicles, using the spraying device for producing injection molded parts for new energy vehicles as claimed in claim 5, characterized in that: The spraying method comprises the following steps: S1, place several injection molded parts vertically or horizontally in the corresponding fixture, and close the two doors of the spray booth; S2, start the motor, and the two turntables drive all the injection molded parts to rotate 45 degrees in the same direction synchronously. That is, when one of the injection molded parts rotates to the paint spraying mechanism, the turntable stops rotating; S3, connect a hose with paint liquid to the connecting pipe sleeve of each nozzle, so that the central nozzle sprays paint on the center of the injection molded part, and the two side nozzles spray paint on the curved surface on both sides of the injection molded part. After all the injection molded parts are painted, open the two double doors of the paint spray box and remove all the sprayed injection molded parts.

Images