Automatic coating production line for battery protection plate

Abstract

The invention provides an automatic coating production line for battery protection plates. The automatic coating production line comprises a suspension type conveying line for circularly conveying the protection plates, and a feeding and discharging mechanism, a dust removal mechanism, a preheating mechanism and a spraying mechanism which are sequentially arranged in the conveying direction of the conveying line; the feeding and discharging mechanism is used for transferring a to-be-sprayed guard plate to the conveying line and transferring the sprayed guard plate on the conveying line to the discharging and transferring trolley. The dust removal mechanism is used for carrying out dust removal treatment on the protective plate, and the preheating mechanism is used for carrying out preheating treatment on the protective plate; the number of the spraying mechanisms is two, and the spraying mechanisms are used for spraying the front face and the back face of the protection plate correspondingly. The feeding and discharging mechanism is arranged on the feeding and discharging station of the conveying line and used for transferring the to-be-sprayed guard plate to the conveying line and transferring the sprayed guard plate on the conveying line to the discharging transfer trolley, the guard plate feeding and discharging efficiency is greatly improved, and the manual labor intensity and the safety risk are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of painting, and particularly to an automatic painting production line for battery guards. Background Art

[0002] As a key protective component of the battery pack, the battery guard is widely used in electric vehicles, energy storage devices, and consumer electronic products. Its surface spraying process is directly related to the corrosion resistance, wear resistance, and appearance quality of the guard. The traditional spraying process usually relies on a suspended accumulation chain to transport the guard to the painting booth and completes the operation through an automatic spraying robot.

[0003] In the traditional battery guard painting production line, the loading and unloading are generally carried out manually. Workers hang the guards on the hooks of the suspended accumulation chain, use the suspended accumulation chain to transport the guards to the painting booth for spraying, and then manually remove the sprayed guards from the suspended accumulation chain. This manual loading and unloading method not only has low efficiency and high manual labor intensity, but also has a risk of paint contact, and cannot meet the requirements of modern factories for efficiency and safety. Summary of the Invention

[0004] The present invention provides an automatic painting production line for battery guards, which solves the problems in the prior art that the loading and unloading of the battery guard painting production line are generally carried out manually, with low efficiency, high manual labor intensity, and a risk of paint contact, and cannot meet the requirements of modern factories for efficiency and safety.

[0005] The technical solution of the present invention is realized as follows:

[0006] The present invention provides an automatic painting production line for battery guards, including a suspended conveyor for circulating the guards, a loading and unloading mechanism, a dust removal mechanism, a preheating mechanism, and a spraying mechanism arranged in sequence along the conveying direction of the conveyor; the loading and unloading mechanism is used to transfer the guards to be sprayed onto the conveyor and transfer the guards that have been sprayed on the conveyor to the unloading transfer trolley; the dust removal mechanism is used to remove dust from the guards, and the preheating mechanism is used to preheat the guards; there are two spraying mechanisms, which are respectively used to spray the front and back of the guards.

[0007] Specifically, the loading and unloading mechanism includes a loading and unloading robot, a conveyor belt, a turning table, a mold closing table, and an unloading transfer trolley; the mold closing table is used for workers to close and install the shielding frame on the front and back of the guards to be sprayed, the conveyor belt is used to transport the guards with the shielding frame installed to the turning table, the turning table is used to turn the guards with the shielding frame installed by 90° to the vertical state, and the loading and unloading robot is used to transfer the turned guards and the shielding frame onto the conveyor and transfer the guards and the shielding frame that have been sprayed on the conveyor to the unloading transfer trolley.

[0008] Furthermore, the turnover table includes a support frame, on which a driving component and a turnover frame are installed. The driving component is used to drive the turnover frame to turn over; several tracks are installed on the turnover frame, and several idler rollers are installed on the tracks along the conveying direction of the guard plate; a stop block is provided at one end of the turnover frame away from the conveyor belt to prevent the guard plate from sliding out of the turnover frame; limiting strips are installed on both sides of the turnover frame, and several guiding rollers are installed on the inner side of the limiting strips along the conveying direction of the guard plate; a fixing component is also installed on the limiting strips to fix the guard plate and the shielding frame on the turnover frame.

[0009] Furthermore, the fixing component includes a telescopic cylinder, and an "L"-shaped clamping block is installed at the telescopic end of the telescopic cylinder. The clamping block is driven by the telescopic cylinders on both sides of the turnover frame to clamp the shielding frame.

[0010] Furthermore, a pressure sensor is provided on the contact surface between the stop block and the shielding frame to detect the pressure received by the stop block. The pressure sensor is linked with the telescopic cylinder and the conveyor belt for control. When the pressure sensor detects that the pressure reaches the set threshold, it controls the telescopic cylinder to drive the clamping block to extend and clamp the shielding frame, and at the same time controls the conveyor belt to stop conveying.

[0011] Specifically, two first hanging rings and two second hanging rings are provided at the top of the shielding frame. The first hanging rings are used to cooperate with the hooks on the conveyor line, and the second hanging rings are used to cooperate with the hooks on the end tool of the loading and unloading robot.

[0012] Specifically, multiple groups of preheating mechanisms are provided, and the multiple groups of preheating mechanisms are arranged staggeredly on both sides of the guard plate along the conveying direction of the guard plate; the preheating mechanism includes a mounting frame, and multiple layers of heat radiation tubes are installed on the mounting frame, and high-temperature steam circulates through the heat radiation tubes.

[0013] Specifically, the spraying mechanism includes a closed paint spraying chamber, in which a spraying robot and a pushing device are provided. The spraying robot and the pushing device are respectively located on both sides of the guard plate; the spraying robot is slidably installed on a horizontal linear module for spraying several consecutive guard plates suspended on the conveyor line; the pushing device is used to abut against the back surfaces of several consecutive guard plates to prevent the guard plates from shaking during the spraying process.

[0014] Furthermore, the pushing device includes a base, on which a horizontal electric push rod and a guiding component are installed. A cross bar is installed at the end of the electric push rod. The electric push rod is used to drive the cross bar to extend and abut against the back surface of the guard plate, and the guiding component is used to restrict the linear displacement of the cross bar along the telescopic direction of the electric push rod.

[0015] Furthermore, an air circulation and filtration system is provided at the top of the spray booth. The air circulation and filtration system includes a circulation air duct, on which a filtration box and a circulation pump are installed; an electric heating wire is installed in the filtration box for heating the air; the inlet of the circulation air duct extends to the back of the guard plate, and the outlet of the circulation air duct is located above the front of the guard plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] (1) By configuring loading and unloading mechanisms at the loading and unloading stations of the conveyor line, the present invention is used to transfer the guard plates to be sprayed onto the conveyor line and transfer the guard plates that have been sprayed on the conveyor line to the unloading transfer trolley, greatly improving the loading and unloading efficiency of the guard plates, reducing the manual labor intensity and safety risks;

[0018] (2) By arranging a dust removal mechanism and a preheating mechanism along the conveyor line to remove dust and preheat the guard plates, the present invention is conducive to the adhesion of the paint on the surface of the guard plates, improving the painting effect of the guard plates;

[0019] (3) By setting hanging rings at the top of the guard plate shielding frame and arranging a flipping table to flip the shielding frame with the guard plate by 90°, the guard plate is in a vertical state, facilitating the loading and unloading robot to transfer the guard plate to be sprayed onto the conveyor line;

[0020] (4) By setting a pushing device on the back of the guard plate in the spray booth, the present invention is convenient for preventing the guard plates from shaking when spraying multiple consecutive guard plates, keeping the surfaces to be sprayed of multiple guard plates flat, and improving the spraying quality of the guard plates;

[0021] (5) By setting an air circulation and filtration system at the top of the spray booth, on the one hand, the environment in the spray booth is improved, on the other hand, the filtered paint can be recycled and reused, saving costs, and the air temperature in the spray booth can also be maintained, which is conducive to paint storage and atomization. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 It is a schematic diagram of the overall layout framework of an automatic painting production line for a battery guard plate of the present invention;

[0024] Figure 2 It is a schematic diagram of the cooperation state between the loading and unloading mechanism and the conveyor line in the embodiment of the present invention;

[0025] Figure 3 This is a schematic structural diagram of the flipping table in the embodiment of the present invention;

[0026] Figure 4 is Figure 3 an enlarged view of part A in

[0027] Figure 5 This is a schematic diagram of the cooperation state between the preheating mechanism and the conveyor line in the embodiment of the present invention;

[0028] Figure 6 This is a schematic structural diagram inside the painting chamber in the embodiment of the present invention;

[0029] Figure 7 is Figure 6 an enlarged view of part B in

[0030] Figure 8 This is a schematic diagram of the pipeline layout of the air circulation and filtration system on the top of the painting chamber in the embodiment of the present invention;

[0031] In the figure: 1, conveyor line; 2, loading and unloading mechanism; 3, dust removal mechanism; 4, preheating mechanism; 5, spraying mechanism; 6, guard plate; 7, blanking transfer trolley; 8, loading and unloading robot; 9, conveyor belt; 10, flipping table; 11, mold clamping table; 12, shielding frame; 13, support frame; 14, driving component; 15, flipping frame; 16, track; 17, idler roller; 18, stop block; 19, limiting strip; 20, guiding roller; 21, telescopic cylinder; 22, clamping block; 23, first hanging ring; 24, second hanging ring; 25, mounting rack; 26, heat radiation tube; 27, painting chamber; 28, spraying robot; 29, pushing device; 30, base; 31, electric push rod; 32, guiding component; 33, cross bar; 34, circulation air duct; 35, filter box; 36, circulation pump; 37, inlet; 38, outlet. Detailed implementation manners

[0032] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Refer to Figures 1 to 8, the present invention provides an automatic painting production line for battery guards, including a suspended conveyor line 1 for circulating and conveying the guards 6, a loading and unloading mechanism 2, a dust removal mechanism 3, a preheating mechanism 4, and a spraying mechanism 5 arranged in sequence along the conveying direction of the conveyor line 1; the loading and unloading mechanism 2 is used to transfer the guards 6 to be sprayed onto the conveyor line 1 and transfer the guards 6 that have completed spraying on the conveyor line 1 to the unloading transfer trolley 7; the dust removal mechanism 3 is used to remove dust from the guards 6, and the preheating mechanism 4 is used to preheat the guards 6; there are two spraying mechanisms 5, which are respectively used to spray the front and back of the guards 6.

[0034] In this embodiment, the dust removal mechanism 3 uses an electrostatic air curtain machine for dust removal, which can effectively remove the dust on the guards 6.

[0035] In this embodiment, the conveyor line 1 is a suspended accumulation chain, which can be used to convey multiple continuous guards 6 at the same time.

[0036] Specifically, as Figure 2 shown, the loading and unloading mechanism 2 includes a loading and unloading robot 8, a conveyor belt 9 (which can use a traditional belt conveyor), a turning table 10, a mold closing table 11, and an unloading transfer trolley 7; the mold closing table 11 is used for manually closing and installing the shielding frame 12 on the front and back of the guards 6 to be sprayed, the conveyor belt 9 is used to convey the guards 6 with the shielding frame 12 installed to the turning table 10, the turning table 10 is used to turn the guards 6 with the shielding frame 12 installed by 90° to the vertical state, and the loading and unloading robot 8 is used to transfer the turned guards 6 and the shielding frame 12 onto the conveyor line 1 and transfer the guards 6 and the shielding frame 12 that have completed spraying on the conveyor line 1 to the unloading transfer trolley 7.

[0037] Furthermore, as Figure 3 , 4 shown, the turning table 10 includes a support frame 13, a driving component 14 (the driving component 14 can use the cooperation of a motor and a reducer) and a turning frame 15 are installed on the support frame 13, and the driving component 14 is used to drive the turning frame 15 to turn; a number of tracks 16 are installed on the turning frame 15, and a number of rollers 17 are installed on the tracks 16 along the conveying direction of the guards 6; a stop block 18 is provided at one end of the turning frame 15 away from the conveyor belt 9 to prevent the guards 6 from sliding out of the turning frame 15; limiting strips 19 are installed on both sides of the turning frame 15, and a number of guide rollers 20 are installed on the inner side of the limiting strips 19 along the conveying direction of the guards 6; a fixing component is also installed on the limiting strips 19 to fix the guards 6 and the shielding frame 12 on the turning frame 15. In this embodiment, through the arrangement of the rollers 17 and the guide rollers 20, sliding can be changed to rolling, reducing the friction force of the guards 6 sliding on the turning frame 15, thereby avoiding damage to the guards 6.

[0038] Further, as Figure 4 shown, the fixing assembly includes a telescopic cylinder 21, and an "L"-shaped clamping block 22 is installed at the telescopic end of the telescopic cylinder 21. The clamping block 22 is driven by the telescopic cylinders 21 on both sides of the flipping frame 15 to clamp the shielding frame 12. The "L"-shaped clamping block 22 can not only clamp the side wall of the shielding frame 12, but also press the top surface of the shielding frame 12, improving the stability of the shielding frame 12 fixed on the flipping frame 15.

[0039] In this embodiment, one end of the limiting strip 19 close to the conveyor belt 9 is in an outward-expanded structure in the shape of a "horn", which can play a guiding role and guide the guard plate 6 conveyed on the conveyor belt 9 onto the flipping frame 15.

[0040] Further, a pressure sensor is provided on the contact surface between the stop block 18 and the shielding frame 12 for detecting the pressure received by the stop block 18. The pressure sensor is linked with the telescopic cylinder 21 and the conveyor belt 9. When the pressure sensor detects that the pressure reaches the set threshold, it controls the telescopic cylinder 21 to drive the clamping block 22 to extend and clamp the shielding frame 12, and at the same time controls the conveyor belt 9 to stop conveying.

[0041] Specifically, as Figure 2 、 3 shown, two first hanging rings 23 and two second hanging rings 24 are provided at the top of the shielding frame 12. The first hanging ring 23 is used to cooperate with the hook on the conveying line 1, facilitating the suspension conveying of the shielding frame 12 assembled with the guard plate 6; the second hanging ring 24 is used to cooperate with the hook on the end tool of the loading and unloading robot 8, so as to realize the automatic transfer of the shielding frame 12 assembled with the guard plate 6 by the loading and unloading robot 8 onto the suspended accumulation chain.

[0042] During the specific implementation process, a position sensor is installed at the corresponding loading and unloading position on the conveying line 1. When it detects that the chain plate trolley on the suspended accumulation chain is conveyed to the loading position, it stops conveying, and uses the loading and unloading robot 8 to automatically transfer the guard plate 6 on the flipping table 10 to the hook at the bottom of the chain plate trolley; when it detects that the chain plate trolley on the suspended accumulation chain is conveyed to the unloading position, it stops conveying, and uses the loading and unloading robot 8 to automatically transfer the guard plate 6 hung on the chain plate trolley to the unloading transfer trolley 7 (the docking position of the unloading transfer trolley 7 is fixed).

[0043] During the specific implementation process, a vision recognition camera is integrated on the end tool of the loading and unloading robot 8, which is used to take images of the hanging rings on the shielding frame 12, the hooks on the suspended accumulation chain, and the unloading transfer trolley 7 for auxiliary positioning, facilitating the loading and unloading robot 8 to perform loading and unloading more efficiently and accurately. The loading and unloading robot 8 locates the hanging ring through the vision recognition system (accuracy ±0.1 mm), and the docking error with the hook on the conveying line 1 is ≤1 mm.

[0044] In this embodiment, the shielding frame 12 and the guard plate 6 can be assembled by clamping or using bolts. A plurality of positioning holes for passing bolts are provided along the circumferential direction of the shielding frame 12. The positioning holes correspond to the mounting holes on the edge of the guard plate 6. The guard plate 6 and the two shielding frames 12 are locked and fixed by bolts and nuts.

[0045] In this embodiment, as Figure 2 shown, the bottom of the blanking transfer trolley 7 is provided with walking wheels, and a plurality of partition grooves are provided on the trolley for partitioning a plurality of vertically placed sprayed guard plates 6. The trolley can be an AGV trolley, and it can automatically return to the blanking position after each product transfer to cooperate with the loading and unloading robot 8.

[0046] Specifically, as Figure 5 shown, a plurality of preheating mechanisms 4 are provided. The plurality of preheating mechanisms 4 are staggered on both sides of the guard plate 6 along the conveying direction of the guard plate 6. The preheating mechanism 4 includes a mounting frame 25, and a plurality of layers of heat radiation tubes 26 are installed on the mounting frame 25. High-temperature steam (steam temperature is 120 - 150 °C, and the temperature fluctuation range is maintained within ±2 °C by a PID control system) is circulated through the heat radiation tubes 26. Heat is released by the condensation of the high-temperature steam, and then the heat is dissipated through the heat radiation tubes 26 to preheat the guard plate 6, thereby improving the adhesion of the coating on the guard plate 6.

[0047] In this embodiment, the residence time of the guard plate 6 in the preheating area is 3 - 5 minutes to ensure that the surface temperature rises to 60 - 80 °C to improve the coating adhesion.

[0048] Specifically, as Figure 6 、 8 shown, the spraying mechanism 5 includes an enclosed spraying chamber 27. A spraying robot 28 and a pushing device 29 are provided in the spraying chamber 27. The spraying robot 28 and the pushing device 29 are respectively located on both sides of the guard plate 6. The spraying robot 28 is slidably installed on a horizontal linear module for spraying a plurality of continuous guard plates 6 suspended on the conveying line 1. The pushing device 29 is used to abut against the back of a plurality of continuous guard plates 6 to prevent the guard plates 6 from shaking during the spraying process.

[0049] Further, as Figure 7 shown, the pushing device 29 includes a base 30. A horizontal electric push rod 31 and a guiding component 32 are installed on the base 30. The end of the electric push rod 31 is installed with a cross bar 33. The electric push rod 31 is used to drive the cross bar 33 to extend and abut against the back of the guard plate 6. The guiding component 32 is used to restrict the linear displacement of the cross bar 33 along the telescopic direction of the electric push rod 31.

[0050] In this embodiment, the number of the electric push rods 31 is 3, and the 3 electric push rods 31 are synchronously controlled. The number of the guide components 32 is 6, and the specific number can be adjusted according to parameters such as the length of the cross bar 33 and the weight and size of the guard plate 6.

[0051] Specifically, the guide assembly 32 includes a slide rail and a slide rod. The slide rail is fixedly mounted on the base 30 , the slide rod is slidably connected to the slide rail, and the front end of the slide rod is fixedly connected to the cross bar 33 .

[0052] In this embodiment, a sliding groove is opened on the top surface of the sliding rail along the length direction, the inner wall contour of the sliding groove matches the outer wall contour of the sliding rod, and the sliding rod is slidably embedded in the sliding groove. The transverse cross-section of the sliding groove and the sliding rod can be in the shape of "I", "丄", "凸" or the like.

[0053] In this embodiment, the electric push rod 31 can push the guard plate 6 to an inclined state (so that the angle between the guard plate 6 and the vertical plane is 0 to 30°) by driving the cross bar 33 to extend, which is convenient for roughening the surface of the guard plate 6 to be sprayed. The process principle of roughening spraying is that the spray material is sprayed in the air at a long distance and initially solidified into particles and then falls on the paint surface to form a rough surface. The inclined guard plate 6 can more easily catch the fallen granular spray paint, which is more efficient and can reduce the waste of spray materials.

[0054] Specifically, a buffer pad is provided on the contact surface between the cross bar 33 and the guard plate 6 to buffer the impact when the cross bar 33 contacts the guard plate 6 and prevent the cross bar 33 from damaging the surface of the guard plate 6; the buffer pad can be made of rubber material.

[0055] In this embodiment, a force sensor is installed at the telescopic end of the electric push rod 31 for detecting the force exerted on the cross bar 33 by the guard plate 6. When it is detected that the force exerted on the cross bar 33 by the guard plate 6 reaches a set threshold, it indicates that the guard plate 6 and the cross bar 33 are in place. At this time, the electric push rod 31 can be controlled to stop driving the cross bar 33 forward.

[0056] In this embodiment, the cross bar 33 can adopt a segmented design, and the ends of adjacent cross bars 33 can be extended by means of snap connection, bolt connection, etc., and the length of the cross bar 33 can be increased or decreased according to actual needs (such as the total width of multiple adjacent guard plates 6).

[0057] In this embodiment, the base 30 can be designed to be height-adjustable (a hydraulic lifting column or an electric screw lifting device can be integrated at the bottom of the base 30), and the height of the base 30 can be adjusted according to actual conditions (such as the height of the bottom end of the guard plate 6), thereby adjusting the height of the cross bar 33 to adapt to the size of the guard plate 6. It is necessary to ensure that the cross bar 33 is located a certain distance above the bottom end of the guard plate 6.

[0058] Furthermore, ifFigure 8 As shown, an air circulation and filtration system is provided at the top of the spray booth 27. The air circulation and filtration system includes a circulation air duct 34, and a filter box 35 and a circulation pump 36 are installed on the circulation air duct 34; an electric heating wire is installed in the filter box 35 for heating the air; the inlet 37 of the circulation air duct 34 extends to the back of the guard plate 6, and the outlet 38 of the circulation air duct 34 is located above the front of the guard plate 6; by operating the circulation pump 36, the air mixed with paint on the back of the guard plate 6 can be pumped into the circulation air duct 34, and after being filtered and purified by the filter box 35, it is then re-supplied into the spray booth 27 through the outlet 38 of the circulation air duct 34, improving the air cleanliness in the spray booth 27. At the same time, the filtered paint can be recycled and reused, reducing the material cost. In addition, the heating wire provided in the filter box 35 can heat the air to prevent the paint temperature in the spray booth 27 from being too low and causing difficulty in atomization.

[0059] The working process of the coating production line in this embodiment is as follows:

[0060] S1, Manually assemble two shielding frames 12 on the front and back of the guard plate 6 at the mold clamping table 11, and then place the guard plate 6 equipped with the shielding frames 12 on the conveyor belt 9.

[0061] S2, The conveyor belt 9 transports the product to the turning table 10, and the turning table 10 fixes the product and turns the product 90° to the vertical state.

[0062] S3, The loading and unloading robot 8 cooperates with the hook at the top of the shielding frame 12 through the hook on the end tool, removes the product on the turning table 10, and transfers the product to the hook of the suspended accumulation chain.

[0063] S4, The suspended accumulation chain transports the product to the dust removal mechanism 3 for dust removal treatment.

[0064] S5, The suspended accumulation chain transports the product to the preheating mechanism 4 for preheating treatment.

[0065] S6, The suspended accumulation chain transports the product into the first spray booth, and the front of the product is sprayed by the spraying robot 28.

[0066] S7, The suspended accumulation chain transports the product into the second spray booth, and the back of the product is sprayed by the spraying robot 28.

[0067] S8, The loading and unloading robot 8 sequentially removes the sprayed product from the suspended accumulation chain and places it in the unloading transfer trolley 7.

[0068] After the blanking transfer trolley 7 is fully loaded in S9, the blanking transfer trolley 7 transfers the product to the manual disassembly and assembly area, where the masking frames 12 on both sides of the product are removed manually, and the empty blanking transfer trolley 7 is transferred to the blanking position;

[0069] In S10, the guard plate 6 is weighed and its film thickness is detected;

[0070] In S11, the qualified products are transferred to the curing room for curing, and the unqualified products are transferred to the repair room for manual repair;

[0071] In S12, the masking frames 12 are taken for cleaning.

[0072] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic painting production line for battery protection plates, characterized in that, It includes a suspended conveyor line (1) for circularly conveying the guard plate (6), a loading and unloading mechanism (2), a dust removal mechanism (3), a preheating mechanism (4), and a spraying mechanism (5) arranged in sequence along the conveying direction of the conveyor line (1); the loading and unloading mechanism (2) is used to transfer the guard plate (6) to be sprayed onto the conveyor line (1), and transfer the guard plate (6) that has been sprayed on the conveyor line (1) to the unloading transfer trolley (7); the dust removal mechanism (3) is used to remove dust from the guard plate (6), and the preheating mechanism (4) is used to preheat the guard plate (6); there are two spraying mechanisms (5), which are respectively used to spray the front and back surfaces of the guard plate (6).

2. The automatic painting production line for a battery guard plate according to claim 1, characterized in that The loading and unloading mechanism (2) includes a loading and unloading robot (8), a conveyor belt (9), a flipping table (10), a mold clamping table (11), and an unloading transfer trolley (7); the mold clamping table (11) is used for manually clamping and installing the shielding frame (12) on the front and back surfaces of the guard plate (6) to be sprayed, the conveyor belt (9) is used to convey the guard plate (6) with the shielding frame (12) installed to the flipping table (10), the flipping table (10) is used to flip the guard plate (6) with the shielding frame (12) by 90° to the vertical state, and the loading and unloading robot (8) is used to transfer the flipped guard plate (6) and the shielding frame (12) onto the conveyor line (1), and transfer the guard plate (6) and the shielding frame (12) that have been sprayed on the conveyor line (1) to the unloading transfer trolley (7).

3. The automatic painting production line for a battery guard plate according to claim 2, wherein The flipping table (10) includes a support frame (13), a driving component (14) and a flipping frame (15) are installed on the support frame (13), and the driving component (14) is used to drive the flipping frame (15) to flip; several tracks (16) are installed on the flipping frame (15), and several idler rollers (17) are installed on the tracks (16) along the conveying direction of the guard plate (6); a stop block (18) is provided at one end of the flipping frame (15) away from the conveyor belt (9) to prevent the guard plate (6) from sliding out of the flipping frame (15); limiting strips (19) are installed on both sides of the flipping frame (15), and several guiding rollers (20) are installed on the inner side of the limiting strips (19) along the conveying direction of the guard plate (6); a fixing component is also installed on the limiting strip (19) for fixing the guard plate (6) and the shielding frame (12) on the flipping frame (15).

4. The automatic painting production line for a battery guard plate according to claim 3, wherein The fixing component includes a telescopic cylinder (21), and an "L"-shaped clamping block (22) is installed at the telescopic end of the telescopic cylinder (21). The clamping block (22) is driven by the telescopic cylinders (21) on both sides of the flipping frame (15) to clamp the shielding frame (12).

5. The automatic painting production line for a battery guard plate according to claim 3, wherein A pressure sensor is provided on the contact surface between the stop block (18) and the shielding frame (12) for detecting the pressure received by the stop block (18). The pressure sensor is linked with the telescopic cylinder (21) and the conveyor belt (9). When the pressure sensor detects that the pressure reaches the set threshold, it controls the telescopic cylinder (21) to drive the clamping block (22) to extend and clamp the shielding frame (12), and at the same time controls the conveyor belt (9) to stop conveying.

6. The automatic painting production line for a battery guard plate according to claim 2, wherein The top of the shielding frame (12) is provided with two first hanging rings (23) and two second hanging rings (24). The first hanging rings (23) are used to cooperate with the hooks on the conveyor line (1), and the second hanging rings (24) are used to cooperate with the hooks on the end tool of the loading and unloading robot (8).

7. An automatic painting production line for a battery guard plate according to claim 1, characterized in that There are multiple groups of the preheating mechanism (4), and the multiple groups of the preheating mechanism (4) are arranged on both sides of the guard plate (6) in a staggered manner along the conveying direction of the guard plate (6). The preheating mechanism (4) includes a mounting frame (25), and multiple layers of heat radiation tubes (26) are installed on the mounting frame (25). High-temperature steam is circulated through the heat radiation tubes (26).

8. The automatic painting production line for a battery guard plate according to claim 1, characterized in that The spraying mechanism (5) includes an enclosed paint spraying chamber (27). A spraying robot (28) and a pushing device (29) are arranged in the paint spraying chamber (27). The spraying robot (28) and the pushing device (29) are respectively located on both sides of the guard plate (6). The spraying robot (28) is slidably installed on a horizontal linear module and is used for spraying a number of consecutive guard plates (6) suspended on the conveyor line (1). The pushing device (29) is used to abut against the back surface of a number of consecutive guard plates (6) to prevent the guard plates (6) from shaking during the spraying process.

9. The automatic painting production line for a battery guard plate according to claim 8, characterized in that The pushing device (29) includes a base (30). A horizontal electric push rod (31) and a guiding component (32) are installed on the base (30). A cross bar (33) is installed at the end of the electric push rod (31). The electric push rod (31) is used to drive the cross bar (33) to extend and abut against the back surface of the guard plate (6), and the guiding component (32) is used to restrict the linear displacement of the cross bar (33) along the telescopic direction of the electric push rod (31).

10. A battery guard plate automatic painting production line according to claim 8, characterized in that, The top of the paint spraying chamber (27) is provided with an air circulation and filtration system. The air circulation and filtration system includes a circulation air duct (34). A filtration box (35) and a circulation pump (36) are installed on the circulation air duct (34). Electric heating wires are installed in the filtration box (35) for heating the air. The inlet (37) of the circulation air duct (34) extends to the back surface of the guard plate (6), and the outlet (38) of the circulation air duct (34) is located above the front surface of the guard plate (6).

Images