Automatic conveying and grabbing device for helmet spraying

Abstract

The invention relates to an automatic conveying and grabbing device for helmet spraying. The helmet grabbing device comprises a transverse rack, a longitudinal rack corresponding to the transverse rack, a helmet conveying assembly installed on the transverse rack, a longitudinal driving device installed on the longitudinal rack, a transverse driving device installed on the longitudinal driving device, a lifting device installed on the transverse driving device and a plurality of grabbing assemblies installed on the lifting device. A spraying support jig for supporting the helmet is installed on the helmet conveying assembly; a photoelectric switch is mounted on the top surface of the right end of the transverse rack; after the clamp A and the clamp B are closed, the inner diameter of the jaw is consistent with the outer diameter of the sleeve, after the clamp A and the clamp B clamp the sleeve, it is guaranteed that the helmet on the spraying support jig does not rotate or deviate in the conveying process, the angle of the helmet is accurate during spraying, and the spraying efficiency is improved. After the positioning rod A, the positioning rod B and the elastic positioning frame are connected with the helmet hanging hole in an inserted mode, it is guaranteed that the inner surface and the outer surface of the helmet are not shielded, one-time spraying forming can be achieved, and the secondary spraying procedure of the helmet is omitted.

Description

Technical Field

[0001] The invention relates to an automatic transmission and grabbing device for spraying helmets, and belongs to the technical field of bulletproof helmet processing. Background Art

[0002] Bulletproof helmets are equipment that can absorb and dissipate the energy of bullets, prevent penetration, reduce blunt trauma and effectively protect the human head. They are used to equip military combat personnel and police. Currently, the main materials of bulletproof helmets are ultra-high molecular weight polyethylene fiber and aromatic polyamide. Helmets made of ultra-high molecular weight polyethylene fiber are lighter. During the production process of bulletproof helmets, a spraying process is required to make the helmet suitable for different usage environments. When spraying, the helmet needs to be placed on the spraying bracket twice for internal and external spraying, which is time-consuming and labor-intensive. It is easy to scratch the sprayed surface of the helmet when manually picking up the helmet. Inaccurate placement of the helmet can easily lead to uneven spraying of the helmet surface. The helmet is easy to fall off when rotated during spraying, affecting product quality and low work efficiency. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a helmet spraying automatic transmission and grasping device which can automatically grasp the helmet, prevent the helmet from rotating or deviating during the grasping process, and ensure accurate helmet angle during spraying.

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

[0005] The automatic conveying and grabbing device for spraying helmets of the present invention includes a transverse frame, a longitudinal frame corresponding to the transverse frame, a helmet conveying assembly installed on the transverse frame, a longitudinal drive device installed on the longitudinal drive device, a transverse drive device installed on the longitudinal drive device, a lifting device installed on the transverse drive device, and a plurality of grabbing assemblies installed at intervals on the lifting device; a spraying bracket jig for supporting the helmet is installed on the helmet conveying assembly; and a photoelectric switch is installed on the top surface of the right end of the transverse frame.

[0006] The helmet transmission assembly of the present invention includes a transmission shaft fixedly installed at the left and right ends of a horizontal frame, a transmission gear fixedly installed at the front and rear ends of each transmission shaft, a front transmission chain meshed with the two front transmission gears, a rear transmission chain meshed with the two rear transmission gears, a driven gear fixedly installed on the transmission shaft at the right end, a transmission motor fixedly installed on the longitudinal frame, a main transmission gear installed on the transmission shaft of the transmission motor, and a transmission chain meshed with the main transmission gear and the driven gear; support rods are evenly installed between the front transmission chain and the rear transmission chain, and positioning columns are evenly installed on the support rods; the spray bracket jig is sleeved on the positioning columns; the cross-section of the positioning columns is in the shape of <>.

[0007] The longitudinal drive device of the present invention includes a slide rail A fixedly installed longitudinally and parallel to the longitudinal frame, a spur rack installed longitudinally on the longitudinal frame, four sliders slidably installed on the two slide rails A, a control workbench installed on the four sliders A, a longitudinal drive motor fixedly installed vertically on one side of the top surface of the control workbench, and a longitudinal drive gear installed on the bottom of the longitudinal drive motor transmission shaft, the longitudinal drive motor transmission shaft gap passes through the through hole on the control workbench, the longitudinal drive gear is engaged with the spur rack, and the spur rack is located between the two slide rails A; two sliders are slidably installed on each slide rail A; the transverse drive device is fixedly installed on the other side of the top surface of the control workbench.

[0008] The transverse driving device of the present invention includes a rectangular slot seat fixedly installed transversely on the control workbench, a vertical support seat fixedly installed at the right end of the rectangular slot seat, a slide rail B fixedly installed parallel to the rectangular slot seat, a screw nut pair installed between the two slide rails, a transverse motor fixedly installed on the vertical support seat, a main pulley installed on the transverse motor transmission shaft, a passive pulley installed at the end of the screw nut pair, and a conveyor belt installed on the main pulley and the passive pulley, the bottom end of the nut of the screw nut pair is slidably connected to the slide rail B through a slider; the lifting device is fixedly installed on the top surface of the nut of the screw nut pair.

[0009] The lifting device of the present invention includes a support frame longitudinally fixedly installed at both ends of the top surface of the screw nut pair 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 vertically fixedly installed on the cylinder fixing seat, a slide rail seat installed at the bottom of the lifting cylinder piston rod, and a slide rail C fixedly installed on the slide rail seat; the two guide rails are respectively located on the front and rear sides of the lifting cylinder; a slider B that slides with the guide rail is fixedly installed on the right side of the slide rail seat; the grabbing components are installed at intervals on the slide rail seat; the grabbing components correspond to the spray bracket fixture.

[0010] The grabbing assembly of the present invention includes a fixing frame fixedly installed on the right side of the slide rail seat, a grabbing cylinder fixedly installed on the right side of the top of the fixing frame vertical plate, a U-shaped connecting ear fixedly installed on the end of the cylinder piston rod, a swing arm A and a swing arm B symmetrically linked in the U-shaped connecting ear, and an L-shaped clamp arm A hinged at the end of the swing arm A and an L-shaped clamp arm B hinged at the end of the swing arm B. The L-shaped clamp arm A and the L-shaped clamp arm B are symmetrically arranged with the center of the U-shaped connecting ear, and a slider C and a slider D are slidably arranged on the slide rail C. The connecting end of the L-shaped clamp arm A is fixedly installed on the top surface of the slider C, and the clamping end of the L-shaped clamp arm A is installed with a clamp A. The connecting end of the L-shaped clamp arm B is fixedly installed on the top surface of the slider D, and the clamping end of the L-shaped clamp arm B is installed with a clamp B. The jaws of the clamp A are in the shape of <, and the jaws of the clamp B are in the shape of >.

[0011] The spray bracket fixture of the present invention includes a sleeve sleeved on the positioning column, a support rod fixedly installed on the top of the sleeve, positioning rods A and B fixedly installed on both sides of the top of the support rod, and an elastic positioning frame fixedly installed on the rear side of the top of the support rod, and a limit column is installed on the inner side of the outer end of the positioning rod A or the positioning rod B; the positioning rod A and the positioning rod B are both Z-shaped, and the end of the elastic positioning frame is U-shaped; the ends of the positioning rod A, the positioning rod B and the elastic positioning frame correspond to the corresponding hanging holes on the helmet; the inner cavity of the sleeve and the cross-section of the sleeve are both <>-shaped.

[0012] The positive effects of the present invention are as follows: after the front conveying chain and the rear conveying chain on the transverse frame of the present invention convey the spray bracket jig with the helmet placed on it to the grabbing component position, the photoelectric switch stops after detecting the spray bracket jig on the conveying chain; the cross-section of the positioning column is in a <> shape, the inner cavity of the sleeve is in a <> shape, the inner cavity diameter of the sleeve is slightly larger than the diameter of the positioning column, and the positioning column gap is inserted into the inner cavity of the sleeve to prevent the sleeve from rotating and deviating. The top of the positioning column is a pointed cone and has a guiding role when the sleeve is inserted; the jaws of the clamp A are in a <> shape, the jaws of the clamp B are in a > shape, and the outer cross-section of the sleeve is in a <> shape. After the clamp A and the clamp B are closed, the inner diameter of the jaws is consistent with the outer diameter of the sleeve. After the clamp A and the clamp B clamp the sleeve, it is ensured that the helmet on the spray bracket jig does not rotate or deviate during the conveying process, and the angle of the helmet is accurate during spraying. After the positioning rod A, the positioning rod B and the elastic positioning frame are plugged into the helmet hanging hole, it is ensured that the inner and outer surfaces of the helmet are not blocked, and it can be sprayed and formed in one time, reducing the secondary spraying process of the helmet.

[0013] The positioning rods A and B are first inserted into the hanging holes on both sides of the helmet, and the limit columns prevent 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, so different types of helmets can be placed.

[0014] During the helmet transportation and spraying process, no human body touches the helmet surface, eliminating the problem of contamination of the helmet spraying surface when manually picking up the helmet. The present invention has four sets of gripping devices, which can simultaneously transport, grip and spray four helmets, with reliable performance, reduced labor costs and improved production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Attachment Figure 1 It is a schematic diagram of the structure of the present invention;

[0016] Attachment Figure 2 This is a schematic diagram of the assembly structure of the transverse rack parts of the present invention;

[0017] Attachment Figure 3 This is a schematic diagram of the assembly structure of the transverse drive device parts on the longitudinal drive device of the present invention;

[0018] Attachment Figure 4 This is a schematic diagram of the assembly structure of the parts of the transverse drive device of the present invention;

[0019] Attachment Figure 5 This is a structural diagram of the lifting device of the present invention;

[0020] Attachment Figure 6 This is a schematic diagram of the assembly structure of the lifting device parts of the present invention;

[0021] Attachment Figure 7 This is a schematic diagram of the structure of the grabbing mechanism of the present invention;

[0022] Attachment Figure 8 This is a schematic diagram of the assembly structure of the gripping mechanism parts of the present invention;

[0023] Attachment Figure 9 This is a schematic diagram of the structure of the spray bracket fixture of the present invention;

[0024] Attachment Figure 10 A schematic diagram of the helmet structure.

[0025] In the attached figure: 1 horizontal rack, 2 vertical rack,

[0026] 3 helmet transmission assembly, 31 transmission shaft, 32 transmission gear, 33 front transmission chain, 34 rear transmission chain, 35 passive gear, 36 transmission motor, 37 main transmission gear, 38 transmission chain, 39 support rod;

[0027] 4 longitudinal drive device, 40 slide rail A, 41 spur rack, 42 ​​slider A, 43 control workbench, 44 longitudinal drive motor, 45 longitudinal drive gear;

[0028] 5 transverse drive device, 51 rectangular slot seat, 52 vertical support seat, 53 slide rail B, 54 screw nut pair, 55 transverse 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 groups of grabbing components, 70 clamp A, 71 fixed frame, 72 grabbing cylinder, 73 U-shaped connecting ear, 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 spray bracket fixture, 81 sleeve, 82 support rod, 83 positioning rod A, 84 positioning rod B, 85 elastic positioning frame, 86 limit column;

[0032] 9 photoelectric switch;

[0033] 10 helmets. DETAILED DESCRIPTION

[0034] In the description of the present invention, the Figure 1 The horizontal rack 1 is placed in the horizontal direction, i.e., left and right, and the vertical rack 2 is placed in the vertical direction, i.e., front and back.

[0035] In such Figure 1 As shown, the automatic conveying and grabbing device for spraying helmets of the present invention includes a transverse frame 1, a longitudinal frame 2 corresponding to the transverse frame 1, a helmet conveying assembly 3 installed on the transverse frame 1, a longitudinal drive device 4 installed on the longitudinal frame 2, a transverse drive device 5 installed on the longitudinal drive device 4, a lifting device 6 installed on the transverse drive device 5, and several groups of grabbing assemblies 7 installed at intervals on the lifting device 6; this embodiment is four groups of grabbing assemblies 7 arranged at intervals, and a spraying bracket jig 8 for 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 transverse frame 1.

[0036] A helmet 10 is placed on the spray bracket jig 8, and the helmet conveying assembly 3 drives the spray bracket jig 8 on which the helmet 10 is placed to transmit to the right on the transverse frame 1. After the photoelectric switch 9 detects the spray bracket jig 8, the helmet conveying assembly 3 stops, and the transverse drive device 5 drives the lifting device 6 and the grabbing assembly 7 to move toward the spray bracket jig 8 at the right end. The lifting device 6 drives the grabbing assembly 7 to rise and fall to correspond to the spray bracket jig 8, and the grabbing assembly 7 grabs the corresponding spray bracket jig 8; the longitudinal drive device 4 drives the spray bracket jig 8 on which the helmet is placed to be transported backward to the spraying room for spraying.

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

[0038] Support rods 39 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 39. In this embodiment, four positioning posts 30 are spaced apart. The spraying support fixture 8 is mounted on the positioning posts 30. The cross-section of the positioning posts 30 is <>-shaped, and the top of the positioning posts 30 is a pointed cone that serves as a guide to facilitate the insertion of the spraying support fixture 8. The transmission motor 36 is started, and the main transmission gear 37 drives the right-end transmission shaft 31 to rotate through the passive gear 35 and the transmission chain 38, so that the front conveyor chain 33 and the rear conveyor chain 34 are synchronously driven and the left-end transmission shaft 31 is driven to rotate, driving the spraying support fixture 8 to move in the direction of the longitudinal frame 2.

[0039] As attached Figure 1 、 3 As shown, the longitudinal drive device 4 of the present invention includes a slide rail A40 fixedly mounted longitudinally and parallel to the longitudinal frame 2, a spur rack 41 mounted longitudinally on the longitudinal frame 2, four sliders 42 slidably mounted on the two slide rails A40, a control table 43 mounted on the four sliders A42, a longitudinal drive motor 44 fixedly mounted vertically on one side of the top surface of the control table 43, and a longitudinal drive gear 45 mounted at 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 in the control table 43. The longitudinal drive gear 45 meshes with the spur rack 41 located between the two slide rails A40. Two sliders 42 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 table 43. When the longitudinal drive motor 44 is activated, the longitudinal drive gear 45 rotates. The longitudinal drive gear 45 drives the control table 43 along the spur rack 41 between the spray chamber and the initial helmet removal position.

[0040] As attached Figure 3 、 4 As shown, the transverse drive device 5 of the present invention includes a rectangular slotted seat 51 fixedly mounted transversely on the control workbench 43, a vertical support seat 52 fixedly mounted at the right end of the rectangular slotted seat 51, a slide rail B53 fixedly mounted parallel to the rectangular slotted seat 51, a screw-nut pair 54 mounted between the two slide rails B53, a transverse motor 55 fixedly mounted on the vertical support seat 52, a primary pulley 56 mounted on the drive shaft of the transverse motor 55, a passive pulley 57 mounted at the end of the screw-nut pair 54, and a conveyor belt 58 mounted on the primary pulley 56 and the passive pulley 57. The bottom end of the nut of the screw-nut pair 54 is slidably connected to the slide rail B53 via a slider. The lifting device 6 is fixedly mounted on the top surface of the nut of the screw-nut pair 54. The stroke of the screw-nut pair 54 is controlled by parameters adjusted on the spray booth operating console. During operation, the transverse motor 55 drives the 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 the present invention includes a support frame 61 longitudinally fixedly installed at both ends of the top surface of the nut 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 at the front and rear sides of the lifting cylinder 64; a slider B67 sliding 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 the photoelectric switch thereon; the grabbing assembly 7 is installed at intervals on the slide rail seat 65; the grabbing assembly 7 corresponds to the spray bracket fixture 8. The nut of the screw nut pair 54 drives the support frame 61 to move to the left, so that the grabbing assembly 7 runs to the position where the clamp A70 and the clamp B80 clamp the bracket fixture 8 and stops. The lifting cylinder 64 is started to make the slide rail seat 65 move up and down along the guide rail 62 through the slider B67 to lift the grabbing assembly 7. The grabbing assembly 7 does not shake when it is lifted or lowered, and the moving position is accurate.

[0042] As attached Figure 7 、 8 As shown, the grabbing assembly 7 of the present invention includes a fixing frame 71 fixedly mounted on the right side of the slide rail seat 65, a grabbing cylinder 72 fixedly mounted on the right side of the top of the vertical plate of the fixing frame 71, a U-shaped connecting ear 73 fixedly mounted on the end of the piston rod of the cylinder 72, a swing arm A74 and a swing arm B75 symmetrically linked in the U-shaped connecting ear 73, an L-shaped clamp arm A (76) hinged at the end of the swing arm A74, and an L-shaped clamp arm B77 hinged at the end of the swing arm B75, the L-shaped clamp arm A76 and the L-shaped clamp arm B77 being connected in a U-shape. The ears 73 are symmetrically arranged at the center, and the slider C78 and the slider D79 are slidably arranged on the slide rail C66. The connecting end of the L-shaped clamp arm A76 is fixedly installed on the top surface of the slider C78, ​​and the clamping end of the L-shaped clamp arm A76 is installed with the clamp A70. The connecting end of the L-shaped clamp arm B77 is fixedly installed on the top surface of the slider D79, and the clamping end of the L-shaped clamp arm B77 is installed with the clamp B80. The jaws of the clamp A70 are in the shape of <, and the jaws of the clamp B80 are in the shape of >. The clearance of the piston rod of the cylinder 72 passes through the through hole of the vertical plate of the fixed frame 71.

[0043] As attached Figure 9As shown, the spray bracket fixture 8 of the present invention includes a sleeve 81 sleeved on the positioning column 30, a support rod 82 fixedly installed on the top of the sleeve 81, a positioning rod A83 and a positioning rod B84 fixedly installed on both sides of the top of the support rod 82, and an elastic positioning frame 85 fixedly installed on the rear side of the top of the support rod 82. A limiting column 86 is installed on the inner side of the outer end of the positioning rod A83 or the positioning rod B84 to prevent the helmet from moving to the right side of the positioning rod A83 or the left side of the positioning rod B84; the positioning rods A83 and B84 are both Z-shaped, and the end of the elastic positioning frame 85 is U-shaped; the positioning rods A83 and B84 are The ends of the elastic positioning frame 85 correspond to the corresponding hanging holes on the helmet 10; after the positioning rod A83 and the positioning rod B84 are first inserted into the hanging holes on both sides of the helmet, the limit column 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 elastically shrink at a certain angle, so that different types of helmets can be installed; the inner cavity of the sleeve 81 and the outer cross-section of the sleeve 81 are both in the shape of <>; the inner diameter of the sleeve 81 is slightly larger than the outer diameter of the positioning column 30, which facilitates the insertion of the sleeve 81 on the positioning column 30. After insertion, the sleeve 81 does not rotate, and the jaws of the clamp A70 and the clamp B80 are in the shape of <> after being fitted. After the clamps A70 and B80 are closed, the inner diameter of the jaws is consistent with the outer diameter of the sleeve 81. After the clamps A70 and B80 clamp the sleeve 81, they ensure that the position of the helmet on the spray bracket fixture 8 does not rotate or deviate during the transmission process. The angle of the helmet is accurate during spraying. After the positioning rod A83, the positioning rod B84 and the elastic positioning frame 85 are connected to the helmet hanging hole, it is ensured that the inner and outer surfaces of the helmet are not blocked, and it can be sprayed and formed in one time, reducing the secondary spraying process of the helmet.

[0044] When working, if attached Figure 1-10As shown, the operator turns the helmet frontward, inserts the positioning rod A83, positioning rod B84 and elastic positioning frame 85 of the spray bracket fixture 8 into the corresponding hanging holes of the helmet 10, and then inserts the sleeve 81 of the spray bracket fixture 8 into the positioning column 30. The four positioning columns 30 on each support rod 39 are all fitted with the spray bracket fixture 8 of the helmet 10. After that, the spray room operating table starts the work of the present invention, and the transmission motor 36 works to make the front conveyor chain 33 and the rear conveyor chain 34 synchronously drive to run to the right. After the photoelectric switch 9 detects the spray bracket fixture 8 on the conveyor chain, the transmission motor 36 stops; the transverse motor 55 drives the screw to The nut pair moves to the left along the slide rail B53, that is, toward the spray bracket fixture 8, and drives the grabbing assembly 7 to move to the position where the clamp A70 and the clamp B80 clamp the bracket fixture 8 and stop. The piston rods of the four groups of grabbing cylinders 72 move to the right synchronously, and the slider C78 and the slider D79 slide close to each other on the slide rail C66. After the L-shaped clamp arm A76 and the L-shaped clamp arm B77 drive the corresponding clamp A70 and the clamp B80 to clamp the sleeve 81 of the spray bracket fixture 8 (that is, grab the four groups of spray bracket fixtures 8 for placing helmets 10), the piston rod of the lifting cylinder 64 of the lifting device 6 moves upward, so that the slide rail seat 65 passes through the slider B67. Slide upward along the guide rail 62, and the spray bracket fixture 8 with the helmet 10 placed on it leaves the positioning column 30. The lifting cylinder 64 stops when it runs to the photoelectric switch on it. The longitudinal drive motor 44 drives the longitudinal drive gear 45 to rotate. The longitudinal drive gear 45 drives the control workbench 43 along the spur rack 41, that is, the spray bracket fixture 8 with the helmet installed on the grabbing assembly 7 is transported to the spraying room and stops. The piston rod of the lifting cylinder 64 of the lifting device 6 moves downward, causing the slide rail seat 65 to slide downward along the guide rail 62 through the slider B67. The spray bracket fixture 8 is inserted into the positioning column in the spraying room, and the piston rod of the grabbing cylinder 72 moves to the left. Slider C78 and slider D79 slide away from each other on the slide rail C66, and the L-shaped clamp arm A76 and L-shaped clamp arm B77 drive the corresponding clamp A70 and clamp B80 to move away from, that is, loosen the sleeve 81 of the spray bracket fixture 8. The longitudinal motor 55 drives the screw to make the nut pair run to the right along the slide rail B53, that is, away from the spray bracket fixture 8, and stops when it reaches the preset position. The longitudinal drive motor 44 drives the longitudinal drive gear 45 to rotate, and the longitudinal drive gear 45 drives the control workbench 43, that is, the grabbing component 7, along the straight rack 41 and returns to the initial position to prepare for the next spray bracket fixture 8 to grab. At this point, one working cycle of the present invention is completed.

[0045] After the front conveyor chain 33 and the rear conveyor chain 34 on the transverse frame 1 of the present invention convey the spraying bracket jig 8 with the helmet placed thereon to the position of the grabbing assembly 7, the photoelectric switch 9 stops after detecting the spraying bracket jig 8 on the conveying chain; the cross section of the positioning column 30 is in the shape of <>, the inner cavity of the sleeve 81 is in the shape of <>, the inner cavity diameter of the sleeve 81 is slightly larger than the diameter of the positioning column 30, and the positioning column 30 is inserted into the inner cavity of the sleeve 81 to prevent the sleeve 81 from rotating and deviating. The top end of the positioning column 30 is in the shape of a pointed cone and has a guiding function when the sleeve 81 is inserted; the jaws of the clamp A70 It is in the shape of <, the jaws of the clamp B80 are in the shape of >, and the cross-section of the sleeve 81 is in the shape of <>. After the clamps A70 and B80 are closed, the inner diameter of the jaws is consistent with the outer diameter of the sleeve 81. After the clamps A70 and B80 clamp the sleeve 81, it is ensured that the position of the helmet on the spray bracket fixture 8 does not rotate or deviate during the transmission process. The angle of the helmet is accurate during spraying. After the positioning rod A83, the positioning rod B84 and the elastic positioning frame 85 are plugged into the helmet hanging hole, it is ensured that the inner and outer surfaces of the helmet are not blocked, and it can be sprayed and formed in one time, reducing the secondary spraying process of the helmet.

[0046] After the positioning rods A83 and B84 are first inserted into the hanging holes on both sides of the helmet, the limit columns 86 prevent the helmet from moving 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, so that different types of helmets can be placed.

[0047] No one touches the helmet during transport and spraying, eliminating the problem of contamination of the sprayed surface when manually handling helmets. The present invention employs four grabbing devices to simultaneously transport, grab, and spray four helmets, offering reliable performance, reduced labor costs, and improved production efficiency.

Claims

1. An automatic conveying and grabbing device for spraying helmets, characterized in that: The invention comprises a transverse frame (1), a longitudinal frame (2) corresponding to the transverse frame (1), a helmet conveying assembly (3) mounted on the transverse frame (1), a longitudinal driving device (4) mounted on the longitudinal driving device (2), a transverse driving device (5) mounted on the longitudinal driving device (4), a lifting device (6) mounted on the transverse driving device (5), and a plurality of groups of grabbing assemblies (7) mounted at intervals on the lifting device (6); A spraying support fixture (8) for supporting the helmet is installed on the helmet conveying assembly (3); A photoelectric switch (9) is installed on the top surface of the right end of the horizontal frame (1).

2. The automatic conveying and grabbing device for spraying helmets according to claim 1 is characterized in that: The helmet transmission assembly (3) comprises a transmission shaft (31) fixedly mounted on the left and right ends of the transverse frame (1), a transmission gear (32) fixedly mounted on the front and rear ends of each transmission shaft (31), a front transmission chain (33) meshed with the two front transmission gears (32), a rear transmission chain (34) meshed with the two rear transmission gears (32), a driven gear (35) fixedly mounted on the right end of the transmission shaft (31), a transmission motor (36) fixedly mounted on the longitudinal frame (2), a main transmission gear (37) mounted on the transmission shaft of the transmission motor (36), and a transmission chain (38) meshed with the main transmission gear (37) and the driven gear (35); Support rods (39) are evenly installed between the front conveying chain (33) and the rear conveying chain (34), and positioning columns (30) are evenly installed on the support rods (39); the spraying bracket jig (8) is sleeved on the positioning columns (30); the cross section of the positioning columns (30) is in the shape of <>.

3. The automatic conveying and grabbing device for spraying helmets according to claim 1 is characterized in that: The longitudinal drive device (4) comprises a slide rail A (40) longitudinally fixedly mounted on the longitudinal frame (2), a spur rack (41) longitudinally mounted on the longitudinal frame (2), four sliders (42) slidably mounted on the two slide rails A (40), a control workbench (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 workbench (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 workbench (43), the longitudinal drive gear (45) is engaged with the spur rack (41), and the spur rack (41) is located between the two slide rails A (40); two sliders (42) are slidably mounted on each slide rail A (40); The transverse driving device (5) is fixedly mounted on the other side of the top surface of the control workbench (43).

4. The automatic conveying and grabbing device for spraying helmets according to claim 3 is characterized in that: The transverse driving device (5) comprises a rectangular slot seat (51) fixedly mounted on the control workbench (43) in a transverse direction, a vertical support seat (52) fixedly mounted on the right end of the rectangular slot seat (51), a slide rail B (53) fixedly mounted in parallel in the rectangular slot seat (51), a screw nut pair (54) mounted between the two slide rails B (53), a transverse motor (55) fixedly mounted on the vertical support seat (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; and 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 grabbing device for spraying helmets according to claim 4 is characterized in that: The lifting device (6) comprises a support frame (61) longitudinally fixedly mounted on both ends of the top surface of the nut of the screw nut pair (54), two guide rails (62) fixedly mounted on the left side of the support frame (61) and perpendicular to the support frame (61), a cylinder fixing seat (63) fixedly mounted in the middle of the support frame (61), a lifting cylinder (64) vertically fixedly mounted on the cylinder fixing seat (63), a slide rail seat (65) mounted on the bottom of the piston rod of the lifting cylinder (64), and a slide rail C (66) fixedly mounted on the slide rail seat (65); the two guide rails (62) are respectively located at the front and rear sides of the lifting cylinder (64); A slider B (67) is fixedly mounted on the right side of the slide rail seat (65) and slides with the guide rail (62); a grabbing assembly (7) is installed on the slide rail seat (65) at intervals; and the grabbing assembly (7) corresponds to the spraying bracket jig (8).

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

7. The automatic conveying and grabbing device for spraying helmets according to claim 4 is characterized in that: The spraying bracket fixture (8) comprises a sleeve (81) sleeved on a positioning column (30), a support rod (82) fixedly mounted on the top of the sleeve (81), a positioning rod A (83) fixedly mounted on both sides of the top of the support rod (82), a positioning rod B (84) and an elastic positioning frame (85) fixedly mounted on the rear side of the top of the support rod (82), and a limiting column (86) is mounted on the inner side of the outer end of the positioning rod A (83) or the positioning rod B (84); the positioning rod A (83) and the positioning rod B (84) are both Z-shaped, and the end of the elastic positioning frame (85) is U-shaped; the ends of the positioning rod A (83), the positioning rod B (84) and the elastic positioning frame (85) correspond to the corresponding hanging 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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