A helmet spray painting automatic conveying and grabbing device

Abstract

This utility model relates to an automatic conveying and gripping device for helmet spraying, which includes a transverse frame, a longitudinal frame corresponding to the transverse frame, a helmet conveying assembly mounted on the transverse frame, a longitudinal drive device mounted on the longitudinal frame, a transverse drive device mounted on the longitudinal drive device, a lifting device mounted on the transverse drive device, and several sets of gripping assemblies mounted on the lifting device; a spraying bracket fixture supporting the helmet is mounted on the helmet conveying assembly; a photoelectric switch is mounted on the top surface of the right end of the transverse frame; after clamps A and B are closed, the inner diameter of the jaws is consistent with the outer diameter of the sleeve. After clamps A and B grip the sleeve, they ensure that the helmet on the spraying bracket fixture does not rotate or deviate during the conveying process, and the helmet angle is accurate during spraying. After the positioning rods A, B, and the elastic positioning frame are inserted into the helmet suspension holes, they ensure that the inner and outer surfaces of the helmet are unobstructed, and the helmet can be sprayed and formed in one go, reducing the secondary spraying process of the helmet.

Description

Technical Field

[0001] This utility model relates to an automatic conveying and gripping device for helmet spraying, belonging to the field of bulletproof helmet processing technology. Background Technology

[0002] Bulletproof helmets are equipment that absorbs and dissipates the energy of bullets, prevents penetration, reduces blunt force trauma, and effectively protects the human head. They are used to equip military personnel. Currently, the main materials for bulletproof helmets are ultra-high molecular weight polyethylene (UHMWPE) fiber and aramid. Helmets made of UHMWPE fiber are lighter. During the production process of bulletproof helmets, a spraying process is required to make the helmet suitable for different usage environments. During spraying, the helmet must be placed on the spraying bracket twice for internal and external spraying, which is time-consuming and labor-intensive. Manually handling the helmet can easily cause scratches on the sprayed surface. Inaccurate placement of the helmet can lead to uneven spraying, and rotating the helmet during spraying can cause it to fall, affecting product quality and reducing work efficiency. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an automatic helmet spraying conveying and gripping device that automatically grasps the helmet without rotating or deviating during the grasping process and ensures accurate helmet angle during spraying.

[0004] The present invention adopts the following technical solution:

[0005] This utility model of an automatic conveying and gripping device for helmet spraying includes a horizontal frame, a longitudinal frame corresponding to the horizontal frame, a helmet conveying assembly mounted on the horizontal frame, a longitudinal drive device mounted on the longitudinal frame, a horizontal drive device mounted on the longitudinal drive device, a lifting device mounted on the horizontal drive device, and several sets of gripping assemblies spaced apart on the lifting device; a spraying bracket fixture supporting the helmet is mounted on the helmet conveying assembly.

[0006] This utility model helmet transmission assembly includes drive shafts fixedly installed at the left and right ends of a transverse frame, transmission gears fixedly installed at the front and rear ends of each drive shaft, a front transmission chain meshing with the two front transmission gears, a rear transmission chain meshing with the two rear transmission gears, a driven gear fixedly installed on the right end of the drive shaft, a transmission motor fixedly installed on a longitudinal frame, a main transmission gear installed on the transmission shaft of the transmission motor, and a transmission chain meshing with the main transmission gear and the driven gear; support rods A are evenly installed at intervals between the front and rear transmission chains, and positioning posts are evenly installed at intervals on the support rods A; the spraying bracket fixture is fitted onto the positioning posts; the cross-section of the positioning posts is <> shaped.

[0007] This utility model's longitudinal drive device includes a slide rail A longitudinally parallel and fixedly mounted on a longitudinal frame, a rack longitudinally mounted on the longitudinal frame, four sliders A slidably mounted on two slide rails A, a control worktable mounted on the four sliders A, a longitudinal drive motor vertically fixedly mounted on one side of the top surface of the control worktable, and a longitudinal drive gear mounted on the bottom of the drive shaft of the longitudinal drive motor. The drive shaft of the longitudinal drive motor passes through a through hole on the control worktable. The longitudinal drive gear meshes with the rack, which is located between the two slide rails A. Two sliders A are slidably mounted on each slide rail A. The transverse drive device is fixedly mounted on the other side of the top surface of the control worktable.

[0008] This utility model's transverse drive device includes a rectangular slot fixedly mounted transversely on a control workbench, a vertical support fixedly mounted on the right end of the rectangular slot, a slide rail B fixedly mounted parallel to the rectangular slot, a lead screw and nut assembly mounted between the two slide rails, a transverse motor fixedly mounted on the vertical support, a main pulley mounted on the transmission shaft of the transverse motor, a driven pulley mounted on the end of the lead screw and nut assembly, and a conveyor belt mounted on the main pulley and the driven pulley. The bottom end of the nut of the lead screw and nut assembly is slidably connected to the slide rail B via a slider; the lifting device is fixedly mounted on the top surface of the nut of the lead screw and nut assembly.

[0009] This utility model lifting device includes a support frame longitudinally fixedly installed at both ends of the top surface of the lead screw nut and the secondary nut; two guide rails fixedly installed on the left side of the support frame and perpendicular to the support frame; a cylinder fixing seat fixedly installed in the middle of the support frame; a lifting cylinder fixedly installed vertically on the cylinder fixing seat; a slide rail seat installed at the bottom of the piston rod of the lifting cylinder; and a slide rail C fixedly installed on the slide rail seat; the two guide rails are respectively located in front of and behind the lifting cylinder; a slider B that slides with the guide rail is fixedly installed on the right side of the slide rail seat; gripping components are installed at intervals on the slide rail seat; the gripping components correspond to the spraying bracket fixture.

[0010] This utility model's gripping assembly includes a fixed frame fixedly installed on the right side of the slide rail seat, a gripping cylinder fixedly installed on the top right side of the fixed frame's upright plate, a U-shaped connecting lug fixedly installed at the end of the cylinder's piston rod, a swing arm A and a swing arm B symmetrically connected within the U-shaped connecting lug, and an L-shaped clamping arm A hinged to the end of swing arm A and an L-shaped clamping arm B hinged to the end of swing arm B. The L-shaped clamping arms A and B are symmetrically arranged around the center of the U-shaped connecting lug. A slider C and a slider D are slidably mounted on the slide rail C. The connecting end of the L-shaped clamping arm A is fixedly installed on the top surface of slider C, and a clamp A is installed at the gripping end of the L-shaped clamping arm A. The connecting end of the L-shaped clamping arm B is fixedly installed on the top surface of slider D, and a clamp B is installed at the gripping end of the L-shaped clamping arm B. The jaws of clamp A are <-shaped, and the jaws of clamp B are >-shaped.

[0011] This utility model spraying bracket fixture includes a sleeve fitted on a positioning post, a support rod B fixedly installed at the top of the sleeve, positioning rods A and B fixedly installed on both sides of the top of the support rod B, and an elastic positioning frame fixedly installed on the rear side of the top of the support rod B. A limiting post is installed on the inner side of the outer end of positioning rod A or positioning rod B. Positioning rods A and B are both Z-shaped, and the end of the elastic positioning frame is U-shaped. The ends of positioning rods A, B, and the elastic positioning frame correspond to the corresponding suspension holes on the helmet. The inner cavity of the sleeve and the outer cross-section of the sleeve are both <> shaped.

[0012] The positive effects of this utility model are as follows: After the front and rear conveyor chains on the horizontal frame of this utility model convey the painting bracket fixture containing the helmet to the gripping component position, the photoelectric switch stops after detecting the painting bracket fixture on the conveyor chain; the cross-section of the positioning post is <> shaped, the inner cavity of the sleeve is <> shaped, and the diameter of the inner cavity of the sleeve is slightly larger than the diameter of the positioning post. After the positioning post is inserted into the inner cavity of the sleeve, it prevents the sleeve from rotating and deviating. The top of the positioning post is a pointed cone shape, which has a guiding function when the sleeve is inserted; the jaws of clamp A are < shaped, the jaws of clamp B are > shaped, and the outer cross-section of the sleeve is <> shaped. After clamps A and B are closed, the inner diameter of the jaws is consistent with the outer diameter of the sleeve. After clamps A and B clamp the sleeve, they ensure that the helmet on the painting bracket fixture does not rotate or deviate during the conveying process, and the helmet angle is accurate during spraying. After the positioning rods A, B and the elastic positioning frame are inserted into the helmet suspension hole, they ensure that the inner and outer surfaces of the helmet are unobstructed, and the helmet can be sprayed and formed in one go, reducing the secondary spraying process of the helmet.

[0013] Positioning rods A and B are first inserted into the suspension holes on both sides of the helmet, and then the limiting post prevents the helmet from moving; the elastic positioning frame is made of elastic steel material, and the end of the elastic positioning frame is U-shaped and can be elastically contracted at a certain angle to accommodate helmets of different sizes.

[0014] This invention eliminates human contact with the helmet surface during helmet transportation and painting, solving the problem of contamination of the painted surface caused by manual handling of helmets. It features four gripping devices capable of simultaneously transporting, gripping, and painting four helmets, offering reliable performance, reducing labor costs, and improving production efficiency. Attached Figure Description

[0015] Appendix Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Appendix Figure 2 This is a schematic diagram of the assembly structure of the horizontal frame parts of this utility model;

[0017] Appendix Figure 3 This is a schematic diagram of the assembly structure of the transverse drive device parts on the longitudinal drive device of this utility model.

[0018] Appendix Figure 4This is a schematic diagram of the assembly structure of the transverse drive device parts of this utility model;

[0019] Appendix Figure 5 This is a schematic diagram of the lifting device structure of this utility model;

[0020] Appendix Figure 6 This is a schematic diagram of the assembly structure of the lifting device parts of this utility model;

[0021] Appendix Figure 7 This is a schematic diagram of the gripping mechanism of this utility model;

[0022] Appendix Figure 8 This is a schematic diagram of the assembly structure of the gripping mechanism parts of this utility model;

[0023] Appendix Figure 9 This is a schematic diagram of the spraying bracket fixture structure of this utility model;

[0024] Appendix Figure 10 This is a schematic diagram of the helmet structure.

[0025] In the attached diagram: 1. Horizontal frame, 2. Vertical frame.

[0026] 3 Helmet transmission assembly, 31 Drive shaft, 32 Transmission gear, 33 Front transmission chain, 34 Rear transmission chain, 35 Passive gear, 36 Drive motor, 37 Main transmission gear, 38 Transmission chain, 39 Support rod A;

[0027] 4. Longitudinal drive device, 40. Slide rail A, 41. Spur rack, 42. Slider A, 43. Control worktable, 44. Longitudinal drive motor, 45. Longitudinal drive gear;

[0028] 5. Lateral drive unit, 51. Rectangular slot seat, 52. Vertical support seat, 53. Slide rail B, 54. Screw and nut pair, 55. Lateral motor, 56. Main pulley, 57. Driven pulley, 58. Conveyor belt.

[0029] 6 Lifting device, 61 Support frame, 62 Guide rail, 63 Cylinder fixing seat, 64 Lifting cylinder, 65 Slide rail seat, 66 Slide rail C, 67 Slider B, 68 Fixing plate;

[0030] 7 sets of gripping components, 70 clamp A, 71 fixing frame, 72 gripping cylinder, 73 U-shaped connecting lug, 74 swing arm A, 75 swing arm B, 76 L-shaped clamp arm A, 77 L-shaped clamp arm B, 78 slider C, 79 slider D, 80 clamp B;

[0031] 8. Spraying bracket fixture, 81. Sleeve, 82. Support rod B, 83. Positioning rod A, 84. Positioning rod B, 85. Elastic positioning frame, 86. Limiting post;

[0032] 9. Photoelectric switches;

[0033] 10 helmets. Detailed Implementation

[0034] In the description of this utility model, the appendix is ​​used. Figure 1 The horizontal rack 1 is positioned horizontally, i.e., left and right, while the vertical rack 2 is positioned vertically, i.e., front and back.

[0035] In such Figure 1 As shown, the automatic conveying and gripping equipment for helmet spraying of this utility model includes a horizontal frame 1, a vertical frame 2 corresponding to the horizontal frame 1, a helmet conveying assembly 3 installed on the horizontal frame 1, a vertical drive device 4 installed on the vertical frame 2, a horizontal drive device 5 installed on the vertical drive device 4, a lifting device 6 installed on the horizontal drive device 5, and several sets of gripping assemblies 7 installed at intervals on the lifting device 6; in this embodiment, four sets of gripping assemblies 7 are arranged at intervals, and a spraying bracket fixture 8 supporting the helmet is installed on the helmet conveying assembly 3; photoelectric switches 9 are installed on the front and rear sides of the top surface of the right end of the horizontal frame 1.

[0036] A helmet 10 is placed on the spraying bracket fixture 8. The helmet conveying assembly 3 drives the spraying bracket fixture 8, on which the helmet 10 is placed, to move to the right on the horizontal frame 1. After the photoelectric switch 9 detects the spraying bracket fixture 8, the helmet conveying assembly 3 stops. The horizontal drive device 5 drives the lifting device 6 and the gripping assembly 7 to move towards the right end of the spraying bracket fixture 8. The lifting device 6 drives the gripping assembly 7 to lift and lower to correspond with the spraying bracket fixture 8. The gripping assembly 7 grips the corresponding spraying bracket fixture 8. The vertical drive device 4 drives the spraying bracket fixture 8, on which the helmet is placed, to be transported backward to the spraying chamber for spraying.

[0037] As attached Figure 1 , 2 As shown, the helmet transmission assembly 3 of this utility model includes a transmission shaft 31 fixedly installed on the left and right ends of the transverse frame 1, a transmission gear 32 fixedly installed on the front and rear ends of each transmission shaft 31, a front transmission chain 33 meshing with the two front transmission gears 32, a rear transmission chain 34 meshing with the two rear transmission gears 32, a driven gear 35 fixedly installed on the right end transmission shaft 31, a transmission motor 36 fixedly installed on the longitudinal frame 2, a main transmission gear 37 installed on the transmission shaft of the transmission motor 36, and a transmission chain 38 meshing with the main transmission gear 37 and the driven gear 35.

[0038] Support rods A39 are evenly spaced between the front conveyor chain 33 and the rear conveyor chain 34. Positioning posts 30 are evenly spaced on the support rods A39. In this embodiment, four positioning posts 30 are spaced apart. The spraying bracket fixture 8 is fitted onto the positioning posts 30. The cross-section of the positioning post 30 is <> shaped, and the top of the positioning post 30 is a pointed cone shape to guide the insertion of the spraying bracket fixture 8. The drive motor 36 is started, and the main drive gear 37 drives the right-end drive shaft 31 to rotate through the driven gear 35 and the drive chain 38, so that the front conveyor chain 33 and the rear conveyor chain 34 are synchronously driven, and the left-end drive shaft 31 is also driven to rotate, causing the spraying bracket fixture 8 to move in the longitudinal direction of the frame 2.

[0039] As attached Figure 1 , 3 As shown, the longitudinal drive device 4 of this utility model includes a slide rail A40 longitudinally and parallelly fixedly mounted on a longitudinal frame 2, a rack 41 longitudinally mounted on the longitudinal frame 2, four sliders A42 slidably mounted on the two slide rails A40, a control worktable 43 mounted on the four sliders A42, a longitudinal drive motor 44 vertically fixedly mounted on one side of the top surface of the control worktable 43, and a longitudinal drive gear 45 mounted on the bottom of the transmission shaft of the longitudinal drive motor 44. The transmission shaft of the longitudinal drive motor 44 passes through a through hole on the control worktable 43. The longitudinal drive gear 45 meshes with the rack 41, and the rack 41 is located between the two slide rails A40. Two sliders A42 are slidably mounted on each slide rail A40. The transverse drive device 5 is fixedly mounted on the other side of the top surface of the control worktable 43. When the longitudinal drive motor 44 is started, it drives the longitudinal drive gear 45 to rotate. The longitudinal drive gear 45 drives the control worktable 43 to move between the spraying chamber and the initial helmet-removing position along the rack 41.

[0040] As attached Figure 3 , 4 As shown, the horizontal drive device 5 of this utility model includes a rectangular slot seat 51 horizontally fixedly installed on the control workbench 43, a vertical support seat 52 fixedly installed at the right end of the rectangular slot seat 51, a slide rail B53 parallelly fixedly installed inside the rectangular slot seat 51, a lead screw and nut pair 54 installed between the two slide rails B53, a horizontal motor 55 fixedly installed on the vertical support seat 52, a main pulley 56 installed on the transmission shaft of the horizontal motor 55, a driven pulley 57 installed at the end of the lead screw and nut pair 54, and a conveyor belt 58 installed on the main pulley 56 and the driven pulley 57. The bottom end of the nut of the lead screw and nut pair 54 is slidably connected to the slide rail B53 through a slider; the lifting device 6 is fixedly installed on the top surface of the nut of the lead screw and nut pair 54. The stroke of the lead screw and nut pair 54 is adjusted and controlled by the parameters of the spray booth operating table. During operation, the horizontal motor 55 drives the lead screw to move the nut pair left and right along the slide rail B53.

[0041] As attached Figure 5 ,6 As shown, the lifting device 6 of this utility model includes a support frame 61 longitudinally fixedly installed at both ends of the top surface of the screw nut pair 54, two guide rails 62 fixedly installed on the left side of the support frame 61 and perpendicular to the support frame 61, a cylinder fixing seat 63 fixedly installed in the middle of the support frame 61, a lifting cylinder 64 vertically fixedly installed on the cylinder fixing seat 63, a slide rail seat 65 installed at the bottom of the piston rod of the lifting cylinder 64 through a fixing plate 68, and a slide rail C66 fixedly installed on the slide rail seat 65; the two guide rails 62 are respectively located on the front and rear sides of the lifting cylinder 64; a slider B67 that slides with the guide rail 62 is fixedly installed on the right side of the slide rail seat 65, and the lifting position of the lifting cylinder 64 is controlled by a photoelectric switch on it; gripping components 7 are installed at intervals on the slide rail seat 65; the gripping components 7 correspond to the spraying bracket fixture 8. The nut of the lead screw nut assembly 54 drives the support frame 61 to move to the left, causing the gripping component 7 to move to the position where clamps A70 and B80 clamp the support fixture 8 and stop. The lifting cylinder 64 is activated, causing the slide rail seat 65 to move up and down along the guide rail 62 via the slider B67, thereby raising and lowering the gripping component 7. The gripping component 7 does not wobble during raising and lowering and its position is accurate.

[0042] As attached Figure 7 , 8 As shown, the gripping assembly 7 of this utility model includes a fixed frame 71 fixedly installed on the right side of the slide rail seat 65, a gripping cylinder 72 fixedly installed on the top right side of the upright plate of the fixed frame 71, a U-shaped connecting lug 73 fixedly installed on the end of the piston rod of the cylinder 72, a swing arm A74 and a swing arm B75 symmetrically connected in the U-shaped connecting lug 73, and an L-shaped clamping arm A76 hinged to the end of the swing arm A74 and an L-shaped clamping arm B77 hinged to the end of the swing arm B75. The L-shaped clamping arms A76 and B77 are symmetrically arranged around the U-shaped connecting lug 73. A slider C78 and a slider D79 are slidably arranged on the slide rail C66. The connecting end of the L-shaped clamping arm A76 is fixedly installed on the top surface of the slider C78. The clamping end of the L-shaped clamping arm A76 is equipped with clamp A70. The connecting end of the L-shaped clamping arm B77 is fixedly installed on the top surface of the slider D79. The clamping end of the L-shaped clamping arm B77 is equipped with clamp B80. The jaws of clamp A70 are <-shaped, and the jaws of clamp B80 are >-shaped. The piston rod of cylinder 72 passes through the through hole of the vertical plate of the fixing frame 71.

[0043] As attached Figure 9As shown, the spraying bracket fixture 8 of this utility model includes a sleeve 81 fitted onto a positioning post 30, a support rod B82 fixedly installed on the top of the sleeve 81, positioning rods A83 and B84 fixedly installed on both sides of the top of the support rod B82, and an elastic positioning frame 85 fixedly installed on the rear side of the top of the support rod B82. A limiting post 86 is installed on the inner side of the outer end of the positioning rod A83 or positioning rod B84 to prevent the helmet from moving to the right of the positioning rod A83 or to the left of the positioning rod B84. Both the positioning rods A83 and B84 are Z-shaped, and the end of the elastic positioning frame 85 is U-shaped. Positioning rods A83 and B84... The ends of B84 and the elastic positioning frame 85 correspond to the corresponding suspension holes on the helmet 10; after the positioning rods A83 and B84 are inserted into the suspension holes on both sides of the helmet, the limiting post 86 prevents the helmet from moving; the elastic positioning frame 85 is made of elastic steel material, and the end of the elastic positioning frame 85 is U-shaped and can be elastically contracted at a certain angle, so that different models of helmets can be installed; the inner cavity and the outer cross section of the sleeve 81 are both <> shaped; the inner diameter of the sleeve 81 is slightly larger than the outer diameter of the positioning post 30, so that the sleeve 81 can be inserted into the positioning post 30. After insertion, the sleeve 81 does not rotate, and the jaws of the clamps A70 and B80 are in a <> shape after they are engaged. After clamps A70 and B80 are closed, the inner diameter of the jaws is consistent with the outer diameter of the sleeve 81. After clamps A70 and B80 hold the sleeve 81, they ensure that the helmet on the spraying bracket fixture 8 does not rotate or deviate during the transfer process, and the helmet angle is accurate during spraying. After the positioning rods A83, B84 and the elastic positioning frame 85 are inserted into the helmet suspension hole, they ensure that the inner and outer surfaces of the helmet are unobstructed, and the helmet can be sprayed and formed in one go, reducing the secondary spraying process of the helmet.

[0044] During work, as attached Figure 1-10As shown, the operator places the helmet face up and inserts the positioning rods A83, B84, and elastic positioning bracket 85 of the spraying bracket fixture 8 into the corresponding suspension holes of the helmet 10. Then, the sleeve 81 of the spraying bracket fixture 8 is inserted onto the positioning post 30. The four positioning posts 30 on each support rod A39 are fitted with the spraying bracket fixture 8 of the helmet 10. Afterwards, the spraying chamber operating table starts the operation of this utility model. The drive motor 36 operates, causing the front conveyor chain 33 and the rear conveyor chain 34 to move synchronously to the right. After the photoelectric switch 9 detects the spraying bracket fixture 8 on the conveyor chain, the drive motor 36 stops; the transverse motor 55 drives the wire... The lever causes the nut assembly to move to the left along slide rail B53, i.e., toward the spraying bracket fixture 8. This drives the gripping assembly 7 to move until clamps A70 and B80 clamp the fixture 8 and stop. The piston rods of the four gripping cylinders 72 move synchronously to the right. Slider C78 and slider D79 slide close together on slide rail C66. L-shaped clamping arms A76 and B77 drive the corresponding clamps A70 and B80 to clamp the sleeve 81 of the spraying bracket fixture 8 (i.e., gripping the four sets of spraying bracket fixtures 8 holding the helmet 10). The piston rod of the lifting cylinder 64 of the lifting device 6 moves upward, causing the slide rail seat 65 to pass through slider B67. Sliding upwards along guide rail 62, the paint support fixture 8, on which the helmet 10 is placed, moves away from the positioning post 30. The lifting cylinder 64 stops at the photoelectric switch position. The longitudinal drive motor 44 drives the longitudinal drive gear 45 to rotate. The longitudinal drive gear 45, along the rack 41, drives the control worktable 43 (i.e., the gripping assembly 7) to transport the paint support fixture 8, on which the helmet is mounted, to the spraying chamber and then stops. The piston rod of the lifting cylinder 64 of the lifting device 6 moves downwards, causing the slide rail seat 65 to slide downwards along guide rail 62 via slider B67. The paint support fixture 8 inserts into the positioning post inside the spraying chamber. The piston rod of the gripping cylinder 72 moves to the left, and the slide rail seat 65 slides downwards along guide rail 62. Block C78 and slider D79 slide away from each other on slide rail C66. L-shaped clamping arms A76 and B77 drive the corresponding clamps A70 and B80 away from each other, i.e., release the sleeve 81 of the spraying bracket fixture 8. The longitudinal motor 55 drives the lead screw to move the nut pair along slide rail B53 to the right, i.e., away from the spraying bracket fixture 8, and stops when it reaches the preset position. The longitudinal drive motor 44 drives the longitudinal drive gear 45 to rotate. The longitudinal drive gear 45 drives the control worktable 43 along the rack 41 to move back to the initial position after the gripping component 7 is gripped, preparing for the next gripping of the spraying bracket fixture 8. Thus, one working cycle of this utility model is completed.

[0045] The front conveyor chain 33 and rear conveyor chain 34 on the transverse frame 1 of this utility model convey the paint support fixture 8, on which the helmet is placed, to the position of the gripping component 7. After the photoelectric switch 9 detects the paint support fixture 8 on the conveyor chain, it stops. The cross-section of the positioning post 30 is <> shaped, and the inner cavity of the sleeve 81 is <> shaped. The diameter of the inner cavity of the sleeve 81 is slightly larger than the diameter of the positioning post 30. After the positioning post 30 is inserted into the inner cavity of the sleeve 81, it prevents the sleeve 81 from rotating and deviating. The top of the positioning post 30 is conical, which has a guiding function when the sleeve 81 is inserted. The jaws of the clamp A70 The jaws of clamp B80 are shaped like a <, and the cross-section of sleeve 81 is shaped like a <. After clamps A70 and B80 are closed, the inner diameter of the jaws is consistent with the outer diameter of sleeve 81. After clamps A70 and B80 hold sleeve 81, they ensure that the helmet on the spraying bracket fixture 8 does not rotate or deviate during the conveying process, and the helmet angle is accurate during spraying. After positioning rods A83, B84 and elastic positioning frame 85 are inserted into the helmet suspension hole, they ensure that the inner and outer surfaces of the helmet are unobstructed, and the helmet can be sprayed and formed in one go, reducing the secondary spraying process of the helmet.

[0046] Positioning rods A83 and B84 are first inserted into the suspension holes on both sides of the helmet, and limiting post 86 prevents the helmet from moving to the left or right; the elastic positioning frame 85 is made of elastic steel material, and the end of the elastic positioning frame 85 is U-shaped and can be elastically contracted at a certain angle to accommodate helmets of different sizes.

[0047] No one touches the helmet surface during the helmet transportation and painting process, solving the problem of contamination of the helmet coating surface caused by manual handling. This utility model is equipped with four sets of gripping devices that can simultaneously transport, grip, and paint four helmets, ensuring reliable performance, reducing labor costs, and improving production efficiency.

Claims

1. An automatic conveying and gripping device for helmet painting, characterized in that, It includes a horizontal frame (1), a vertical frame (2) corresponding to the horizontal frame (1), a helmet conveying assembly (3) installed on the horizontal frame (1), a vertical drive device (4) installed on the vertical frame (2), a horizontal drive device (5) installed on the vertical drive device (4), a lifting device (6) installed on the horizontal drive device (5), and several sets of gripping assemblies (7) installed at intervals on the lifting device (6). A paint support fixture (8) for supporting the helmet is mounted on the helmet transfer assembly (3).

2. The automatic conveying and gripping device for helmet spraying according to claim 1, characterized in that, The helmet transmission assembly (3) includes a drive shaft (31) fixedly installed on the left and right ends of the transverse frame (1), a transmission gear (32) fixedly installed on the front and rear ends of each drive shaft (31), a front transmission chain (33) meshing with the two front transmission gears (32), a rear transmission chain (34) meshing with the two rear transmission gears (32), a driven gear (35) fixedly installed on the drive shaft (31) at the right end, a drive motor (36) fixedly installed on the longitudinal frame (2), a main drive gear (37) installed on the drive shaft of the drive motor (36), and a transmission chain (38) meshing with the main drive gear (37) and the driven gear (35). Support rods A (39) are evenly installed between the front conveyor chain (33) and the rear conveyor chain (34), and positioning posts (30) are evenly installed on the support rods A (39); the spraying bracket fixture (8) is fitted on the positioning posts (30); the cross section of the positioning posts (30) is <> shaped.

3. The automatic conveying and gripping device for helmet spraying according to claim 1, characterized in that, The longitudinal drive device (4) includes a slide rail A (40) longitudinally and parallelly fixedly mounted on the longitudinal frame (2), a rack (41) longitudinally mounted on the longitudinal frame (2), four sliders A (42) slidably mounted on the two slide rails A (40), a control worktable (43) mounted on the four sliders A (42), a longitudinal drive motor (44) vertically fixedly mounted on one side of the top surface of the control worktable (43), and a longitudinal drive gear (45) mounted on the bottom of the drive shaft of the longitudinal drive motor (44). The drive shaft of the longitudinal drive motor (44) passes through a through hole on the control worktable (43). The longitudinal drive gear (45) meshes with the rack (41). The rack (41) is located between the two slide rails A (40). Two sliders A (42) are slidably mounted on each slide rail A (40). The transverse drive device (5) is fixedly installed on the other side of the top surface of the control workbench (43).

4. The automatic conveying and gripping device for helmet spraying according to claim 3, characterized in that, The transverse drive device (5) includes a rectangular slot (51) fixedly mounted transversely on the control workbench (43), a vertical support (52) fixedly mounted on the right end of the rectangular slot (51), a slide rail B (53) fixedly mounted parallel to the rectangular slot (51), a screw nut pair (54) mounted between the two slide rails B (53), a transverse motor (55) fixedly mounted on the vertical support (52), a main pulley (56) mounted on the transmission shaft of the transverse motor (55), a driven pulley (57) mounted on the end of the screw nut pair (54), and a conveyor belt (58) mounted on the main pulley (56) and the driven pulley (57). The bottom end of the nut of the screw nut pair (54) is slidably connected to the slide rail B (53) through a slider. The lifting device (6) is fixedly mounted on the top surface of the nut of the screw nut pair (54).

5. The automatic conveying and gripping device for helmet spraying according to claim 4, characterized in that, The lifting device (6) includes a support frame (61) that is longitudinally fixed at both ends of the top surface of the screw nut pair (54), two guide rails (62) that are fixedly installed on the left side of the support frame (61) and perpendicular to the support frame (61), a cylinder mounting seat (63) that is fixedly installed in the middle of the support frame (61), a lifting cylinder (64) that is vertically fixedly installed on the cylinder mounting seat (63), a slide rail seat (65) that is installed at the bottom of the piston rod of the lifting cylinder (64), and a slide rail C (66) that is fixedly installed on the slide rail seat (65); the two guide rails (62) are located at the front and rear sides of the lifting cylinder (64), respectively. A slider B (67) that slides on the guide rail (62) is fixedly installed on the right side of the slide rail seat (65); gripping components (7) are installed at intervals on the slide rail seat (65); the gripping components (7) correspond to the spraying bracket fixture (8).

6. The automatic conveying and gripping device for helmet spraying according to claim 4, characterized in that, The gripping assembly (7) includes a fixed frame (71) fixedly installed on the right side of the slide rail seat (65), a gripping cylinder (72) fixedly installed on the top right side of the upright plate of the fixed frame (71), a U-shaped connecting ear (73) fixedly installed on the end of the piston rod of the cylinder (72), a swing arm A (74) and a swing arm B (75) symmetrically connected in the U-shaped connecting ear (73), and an L-shaped clamping arm A (76) hinged to the end of the swing arm A (74) and an L-shaped clamping arm B (77) hinged to the end of the swing arm B (75). The L-shaped clamping arms A (76) and B (77) are symmetrically arranged around the center of the U-shaped connecting ear (73), and sliders C (78) and D (79) are slidably arranged on the slide rail C (66). The connecting end of the L-shaped clamping arm A (76) is fixedly installed on the top surface of the slider C (78). The clamping end of the L-shaped clamping arm A (76) is equipped with clamp A (70). The connecting end of the L-shaped clamping arm B (77) is fixedly installed on the top surface of the slider D (79). The clamping end of the L-shaped clamping arm B (77) is equipped with clamp B (80). The jaws of clamp A (70) are <-shaped, and the jaws of clamp B (80) are >-shaped.

7. The automatic conveying and gripping device for helmet spraying according to claim 4, characterized in that, The spraying bracket fixture (8) includes a sleeve (81) fitted on a positioning post (30), a support rod B (82) fixedly installed on the top of the sleeve (81), positioning rods A (83) and B (84) fixedly installed on both sides of the top of the support rod B (82), and an elastic positioning frame (85) fixedly installed on the rear side of the top of the support rod B (82). A limiting post (86) is installed on the inner side of the outer end of the positioning rod A (83) or the positioning rod B (84). The positioning rods A (83) and B (84) are both Z-shaped, and the end of the elastic positioning frame (85) is U-shaped. The ends of the positioning rods A (83), B (84) and the elastic positioning frame (85) correspond to the corresponding suspension holes on the helmet (10). The inner cavity of the sleeve (81) and the outer cross section of the sleeve (81) are both <> shaped.

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