360-degree omnibearing safety helmet printing equipment

Abstract

The invention discloses 360-degree all-dimensional safety helmet printing equipment which comprises a printing device, a conveyor located on the side edge of the printing device and a mechanical arm transversely arranged above the printing device and the conveyor, the mechanical arm can transfer safety helmets from the printing device to the conveyor, the 360-degree all-dimensional safety helmet printing equipment further comprises a curing device, and the curing device comprises a support, a driving assembly and a plurality of curing assemblies; the bottom of the support is detachably connected with a frame of the conveyor, and the top of the support is arranged to be in a length-adjustable state. Each curing assembly comprises a curing lamp, a connecting shaft located on the back side of the curing lamp and a supporting plate connected with the connecting shaft. The curing device is installed on the side edge of an existing printing device and on the conveyor, after the conveyor supports the printed safety helmet to move to the curing device, the height of the curing device can be adjusted, the safety helmet is placed on the inner side of the curing device, and printing ink is rapidly cured through work of the curing device; and the current situation that a safety helmet printing product is naturally air-dried is changed, and the safety helmet production efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of safety helmet printing technology, specifically a 360-degree all-around safety helmet printing device. Background Technology

[0002] During the manufacturing process of safety helmets, to meet the personalized customization needs of different customers and the requirements of relevant safety marking standards, it is necessary to print customer-specified patterns, text, and other information on the surface of the helmet, such as company logos, safety warning slogans, and product model specifications. Considering the eye-catching nature of the markings and the comprehensiveness of information delivery, common printing processes require full-circumferential printing on the outer side of the safety helmet to ensure that the printed content can be clearly identified from any angle.

[0003] Currently, in the existing safety helmet printing process, after printing on the outer four sides, the printed safety helmet is usually transferred to the next process (such as edge grinding, assembly of accessories, and finished product inspection) for further processing. For the solidification of the printed layer, the industry generally uses natural air drying, relying on ambient airflow to allow the printing ink to dry and solidify naturally. However, this natural air drying method has significant technical drawbacks: firstly, it is time-consuming, typically requiring several hours or even longer for the printed layer to fully solidify, severely impacting the overall production efficiency of the safety helmet and failing to meet the needs of large-scale mass production; secondly, because the printed layer is not fully solidified before entering subsequent processing steps, it is highly susceptible to scratches, wear, peeling, or blurring during transfer, clamping, and processing. This not only reduces the product's appearance quality but may also result in unclear identification of printed safety markings and customer information, affecting the safety helmet's functionality and product qualification rate. Summary of the Invention

[0004] The purpose of this invention is to provide a 360-degree all-around safety helmet printing device, which aims to improve the problem that the natural drying time after printing on all four sides of the safety helmet is too long, affecting other processing steps.

[0005] This invention is implemented as follows: a 360-degree all-around safety helmet printing device, comprising a printing unit, a conveyor located on the side of the printing unit, and a robotic arm horizontally positioned above the printing unit and the conveyor. The robotic arm can transfer safety helmets from the printing unit to the conveyor. It also includes a curing unit, which comprises... The support frame is detachably connected to the conveyor frame at its bottom, and the top of the support frame is designed to be adjustable in length. Multiple curing components, each curing component includes a curing lamp, a connecting shaft located on the back side of the curing lamp, and a support plate connected to the connecting shaft. The support plate is adjustable and runs through the connecting shaft. The angle between the curing lamp and the support plate is adjustable. The drive assembly is installed on top of multiple curing assemblies and below the bracket. The drive assembly drives the curing lamp to reciprocate. An industrial camera, mounted on the vertical section of a bracket, monitors the position of the safety helmet relative to the fixed components in real time.

[0006] Preferably, two connecting discs are fixedly installed on the back side of the curing lamp, the connecting shaft is located between the two connecting discs, and the threaded post installed at the end of the connecting shaft passes through the connecting disc, and the nut sleeved on the threaded post squeezes the connecting disc to fit the connecting shaft.

[0007] Preferably, multiple protrusions and grooves are provided on the end faces of the connecting disc and the connecting shaft, and the multiple protrusions and grooves are evenly distributed along the circumferential direction, with the protrusions extending into the grooves.

[0008] Preferably, a notch is provided in the middle of the connecting shaft, and positioning grooves are provided at both ends of the notch; a clamping plate is provided at the notch by bolts, and the end of the clamping plate extends into the positioning groove.

[0009] Preferably, the support plate is configured as an L-shaped structure, and a sliding hole is provided on the vertical section of the support plate; the vertical section of the support plate is configured to pass through the space formed by the notch and the clamping plate, and the bolt is configured to pass through the sliding hole; a limit post is fixedly provided on the side wall opposite to the clamping plate and the notch, and multiple limit grooves are evenly distributed along the height direction on the vertical section of the support plate, with the limit post extending into the opposite limit groove.

[0010] Preferably, the drive assembly includes a central shaft, a support tube, a torsion spring, a connecting disc assembly, a driven gear, an incomplete gear, and a motor; the bottom of the central shaft is connected to the connecting disc assembly via a bearing, the support tube is bolted to the upper middle part of the central shaft, and the two ends of the torsion spring are respectively connected to the support tube and the connecting disc assembly; the driven gear is mounted on the connecting disc assembly, the incomplete gear is located on the side of the driven gear and is mounted on the power output shaft of the motor, while the motor is mounted on the side of the support tube; the torsion spring and the motor work together to control the reciprocating rotation of the connecting disc assembly.

[0011] Preferably, slots are provided on the side walls of the support tube and the connecting plate assembly that are close to each other, and fixing plates are fixedly installed at both ends of the torsion spring. The fixing plates are connected by bolts and fitted to the support tube and the connecting plate, and the end of the torsion spring is inserted into the slot.

[0012] Preferably, the connecting plate assembly includes a bottom cylinder, a bottom ring plate installed at the bottom of the bottom cylinder, and a top ring plate sleeved in the upper part of the bottom cylinder. The top ring plate and the bottom ring plate are connected by bolts. Annular grooves are provided on the side walls of the top ring plate and the bottom ring plate that are close to each other. An arc-shaped end plate is fixedly provided at the end of the horizontal section of the support plate, with the upper and lower ends of the arc-shaped end plate extending into the annular groove.

[0013] Preferably, the side wall of the central shaft is provided with a vertical groove and a threaded groove; the bracket includes an L-shaped vertical plate, a telescopic cylinder installed on the top of the vertical plate, and a sleeve installed on the telescopic end of the telescopic cylinder, and a vertical rod installed on the top of the sleeve passes through a through hole in the top of the vertical plate; the sleeve is bolted to the top of the central shaft, and a locking pin installed on the inner side wall of the sleeve extends into the vertical groove.

[0014] Preferably, the vertical section of the vertical plate is provided with a snap-fit ​​groove along its height, and an inlet / outlet groove is provided at the end of the snap-fit ​​groove; an ear plate is installed on the industrial camera, the ear plate is connected to the frame, and a polygonal shaft provided through the ear plate is provided through a polygonal hole in the frame; the frame is fitted on the vertical plate, and the snap-fit ​​post installed on the inner side wall of the frame is located in the snap-fit ​​groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention installs a curing device on the side of the existing printing equipment and on the conveyor. After the safety helmet is placed on the conveyor and moved to the curing device, the height of the curing device can be adjusted to place the safety helmet inside the curing device. The printing ink is then quickly cured by the operation of the curing device, which changes the current situation of safety helmet printed products naturally drying and improves the efficiency of safety helmet production.

[0016] The curing device of the present invention includes a support frame, a drive assembly, and multiple sets of curing assemblies distributed vertically; the height of the drive assembly and the curing assemblies can be adjusted synchronously by utilizing the adjustable length of the support frame, which facilitates the placement of safety helmets into the multiple sets of curing assemblies and makes it easier for the conveyor to support and move the safety helmets; the drive assembly can also control the reciprocating motion of the multiple sets of curing assemblies as needed, thereby curing longer printed products.

[0017] The curing assembly of this invention includes a curing lamp, a connecting shaft, and a support plate. The curing lamp and the connecting shaft are adjustablely connected, and the connecting shaft and the support plate are also adjustablely connected. Therefore, the adjustable nature of the curing assembly allows for adjustment of the height and tilt angle of the curing lamp, providing convenience for curing printed products.

[0018] The driving component of this invention includes a central shaft and a connecting disk assembly that are rotatably connected. The top of the curing component is connected to the connecting disk assembly. Therefore, the connecting disk assembly can be controlled to rotate in opposite directions with the cooperation of a torsion spring and a motor, thereby adjusting the position of the curing lamp to complete the curing of the printed product. Attached Figure Description

[0019] Figure 1 This is a first structural schematic diagram of the entire invention; Figure 2 This is a second structural schematic diagram of the entire invention; Figure 3 This is a schematic diagram of the third structure of the entire invention; Figure 4 This is a schematic diagram of the structure of the bracket of the present invention; Figure 5 This is a schematic diagram of the structure of the driving component and the curing component of the present invention; Figure 6 This is a schematic diagram of the curing component of the present invention; Figure 7 This is a schematic diagram of the curing lamp and connecting shaft of the present invention; Figure 8 This is a schematic diagram of the connecting shaft and support plate of the present invention; Figure 9 This is a schematic diagram of the structure of the driving component of the present invention; Figure 10 This is a schematic diagram of the structure of the central axis of the present invention; Figure 11 This is a schematic diagram of the connecting disk assembly of the present invention; Figure 12 This is a schematic diagram of the structure of the connecting disc assembly, support tube, and torsion spring of the present invention; Figure 13 This is a schematic diagram of the structure of the industrial camera of the present invention.

[0020] In the diagram: 1. Bracket; 11. Vertical plate; 12. Telescopic cylinder; 13. Perforation; 14. Snap-on slot; 15. Inlet / outlet slot; 16. Vertical rod; 17. Sleeve; 18. Snap-on post; 2. Industrial camera; 21. Ear plate; 22. Polygonal shaft; 23. Snap-on post; 24. Sleeve frame; 25. Polygonal hole; 3. Curing assembly; 31. Curing lamp; 311. Connecting disc; 312. Protruding post; 32. Connecting shaft; 321. Threaded post; 322. Groove; 323. Notch; 324. Limiting post; 325. Positioning groove; 326. Clamping plate; 33. Support plate; 331. Sliding hole; 332. Limiting groove; 333. Arc-shaped end plate; 4. Drive assembly; 41. Central shaft; 411. Threaded groove; 412. Vertical groove; 42. Support tube; 43. Torsion spring; 431. Fixing plate; 44. Connecting plate assembly; 441. Bottom cylinder; 442. Bottom ring plate; 443. Top ring plate; 444. Annular groove; 445. Slot; 45. Driven gear; 46. Incomplete gear; 47. Motor. Detailed Implementation

[0021] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0022] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details: In order to enable rapid curing of printed products after the safety helmet printing process, a curing device was installed on the side of the existing printing device, resulting in this embodiment.

[0023] The existing printing equipment processes safety helmets and adjusts the printing of corresponding information at different positions on the helmets according to printing requirements. After printing, the safety helmets are held by a robotic arm above and moved to a conveyor on the side of the printing equipment, and then transported to the next process via the conveyor.

[0024] The curing device provided in this embodiment is installed on the side of the conveyor and performs curing treatment on the safety helmet placed on the conveyor for the printing of the product.

[0025] like Figure 1-3 , Figure 5 As shown, the curing device specifically includes a support 1, a drive assembly 4, an industrial camera 2, and multiple curing assemblies 3. The bottom of the support 1 is detachably connected to the conveyor frame, and the top of the support 1 is adjustable in length. The drive assembly 4 is mounted on top of the support 1, and the multiple curing assemblies 3 are mounted below the drive assembly 4. The industrial camera 2 is mounted on the support 1 and monitors the position of the safety helmet relative to the curing assemblies 3 in real time, transmitting the monitoring information to a host computer. The host computer then operates the conveyor and the curing device to work together. When the safety helmet moves to the bottom of the curing device, the length of the support 1 is adjusted, controlling the multiple curing assemblies 3 to descend and distribute themselves on the sides of the safety helmet, with each set of curing assemblies 3 corresponding to a specific printed product. The printed product is then quickly cured through the operation of the curing assemblies 3. Due to the different types of printed products, such as long letter names, it is highly likely that the curing assemblies 3 cannot cover them all simultaneously. To achieve complete curing of the printed product, the drive assembly 4 can drive the curing assemblies 3 to reciprocate, even if the curing assemblies 3 move along a certain path, facilitating the curing process of the printed product.

[0026] like Figure 6 As shown, to achieve the curing process of printed products, each curing assembly 3 includes a curing lamp 31, a connecting shaft 32 located on the back side of the curing lamp 31, and a support plate 33 connected to the connecting shaft 32. The support plate 33 is adjustable and passes through the connecting shaft 32. The angle between the curing lamp 31 and the support plate 33 is adjustable. This configuration utilizes the adjustable state of the curing assembly 3 to adapt to different working environments, improving the flexibility of the curing assembly 3. The aforementioned curing lamp 31 is a UV curing lamp 31.

[0027] like Figure 7As shown, specifically, two connecting discs 311 are fixedly installed on the back side of the curing lamp 31, and the connecting shaft 32 is located between the two connecting discs 311. The threaded post 321 installed at the end of the connecting shaft 32 passes through the connecting disc 311. The nut sleeved on the threaded post 321 squeezes the connecting disc 311 to fit the connecting shaft 32. Under the compression of the nut, the pressure between the connecting disc 311 and the connecting shaft 32 increases, so that the connecting disc 311 and the connecting shaft 32 can be stably connected by friction. This also provides convenience for controlling the curing lamp 31 to rotate around the connecting shaft 32 as needed.

[0028] like Figure 7 As shown, in addition, multiple protrusions 312 and grooves 322 can be provided on the end faces of the connecting disc 311 and the connecting shaft 32 where they contact. The multiple protrusions 312 and grooves 322 are evenly distributed along the circumferential direction. Therefore, when the connecting disc 311 and the connecting shaft 32 contact, the protrusions 312 extend into the grooves 322, increasing the resistance to the relative rotation of the connecting shaft 32 and the connecting disc 311. This allows the curing lamp 31 to be stably installed relative to the support plate 33, and also provides convenience for adjusting the included angle between the support plate 33 and the curing lamp 31.

[0029] like Figure 8 As shown, a notch 323 is provided in the middle of the connecting shaft 32, and positioning grooves 325 are provided at both ends of the notch 323. A clamping plate 326 is bolted to the notch 323, and the end of the clamping plate 326 extends into the positioning groove 325. The support plate 33 is designed with an L-shaped structure, and a sliding hole 331 is provided on the vertical section of the support plate 33. The vertical section of the support plate 33 passes through the space formed by the notch 323 and the clamping plate 326, and the bolt passes through the sliding hole 331. By adjusting the relative position of the clamping plate 326 and the connecting shaft 32 with the bolt, the resistance to the relative movement of the support plate 33 and the connecting shaft 32 can be increased, so as to achieve a stable connection between the connecting shaft 32 and the support plate 33. It also provides support for adjusting the position of the connecting shaft 32 relative to the support plate 33 to adjust the height of the curing lamp 31 as needed.

[0030] like Figure 8 As shown, limiting posts 324 can be fixedly installed on the side walls opposite to the clamping plate 326 and the notch 323. Multiple limiting grooves 332 are evenly distributed along the height direction on the vertical section of the support plate 33. The limiting posts 324 extend into the corresponding limiting grooves 332. At the same time, the structural characteristics of the support plate 33, clamping plate 326, and connecting shaft 32 are utilized to enhance the stability of the connection between the support plate 33 and the connecting shaft 32.

[0031] like Figure 9 , Figure 11As shown, to achieve a stable connection between the drive assembly 4 and the curing assembly 3, the drive assembly 4 includes a central shaft 41 and a connecting disc assembly 44. The connecting disc assembly 44 includes a bottom cylinder 441, a bottom ring plate 442 installed at the bottom of the bottom cylinder 441, and a top ring plate 443 sleeved in the upper part of the bottom cylinder 441. The top ring plate 443 and the bottom ring plate 442 are connected by bolts. Annular grooves 444 are provided on the side walls of the top ring plate 443 and the bottom ring plate 442, and an arc-shaped end plate 333 is fixedly installed at the end of the horizontal section of the support plate 33. Therefore, when assembling the drive assembly 4 and the curing assembly 3, the arc-shaped end plate 333 is placed against the bottom cylinder 441, and then the bolts are rotated to lower the top ring plate 443, so that the upper and lower ends of the arc-shaped end plate 333 extend into the upper and lower annular grooves 444 respectively. This allows the support plate 33 to be stably installed relative to the connecting disc assembly 44, while also providing convenience for adjusting the position of the curing lamp 31 and the number of curing assemblies 3 as needed. The bottom of the central shaft 41 is inserted into the bottom cylinder 441 via a bearing connection.

[0032] like Figure 9 As shown, in order to drive the curing lamp 31 to reciprocate as needed, the drive assembly 4 also includes a support tube 42, a torsion spring 43, a driven gear 45, an incomplete gear 46, and a motor 47. The support tube 42 is bolted to the upper middle part of the central shaft 41, and the two ends of the torsion spring 43 are connected to the support tube 42 and the bottom cylinder 441, respectively. The driven gear 45 is sleeved on the bottom cylinder 441, and the incomplete gear 46 is located on the side of the driven gear 45 and is mounted on the power output shaft of the motor 47. The motor 47 is also mounted on the side of the support tube 42. When the motor 47 drives the incomplete gear 46 to rotate, the incomplete gear 46 and the driven gear 45 periodically mesh together. When the incomplete gear 46 drives the driven gear 45 to rotate, the torsion spring 43 deforms and stores energy. During this process, the position of the curing lamp 31 changes. When the incomplete gear 46 disengages from the driven gear 45, the torsion spring 43 drives the curing lamp 31 to reset. Therefore, the torsion spring 43 and the motor 47 work together to control the reciprocating rotation of the connecting disk assembly 44.

[0033] like Figure 12 As shown, in order to achieve a stable connection between the torsion spring 43 and the support tube 42 and the bottom cylinder 441, slots 445 are provided on the side walls of the support tube 42 and the connecting plate assembly 44 that are close to each other. Fixing plates 431 are fixedly installed at both ends of the torsion spring 43. The fixing plates 431 are connected to the support tube 42 and the connecting plate assembly 44 by bolts, and the end of the torsion spring 43 is inserted into the slot 445. This arrangement allows the torsion spring 43 to store force when the support tube 42 and the bottom cylinder 441 rotate relative to each other.

[0034] like Figure 4 , Figure 10As shown, in order to adjust the height of the curing lamp 31 and thus complete the curing process of batch safety helmet printing, the bracket 1 includes an L-shaped vertical plate 11, a telescopic cylinder 12 installed on the top of the vertical plate 11, and a sleeve 17 installed on the telescopic end of the telescopic cylinder 12. A vertical rod 16 installed on the top of the sleeve 17 passes through a through hole 13 at the top of the vertical plate 11. When the sleeve 17 is stable and movably connected to the vertical plate 11, the height of the sleeve 17 can be adjusted by the telescopic cylinder 12. In addition, a vertical groove 412 and a threaded groove 411 are provided on the side wall of the central shaft 41. The sleeve 17 is bolted to the top of the central shaft 41, and a retaining post 18 installed on the inner side wall of the sleeve 17 extends into the vertical groove 412 to achieve a stable connection between the sleeve 17 and the central shaft 41. The position of the drive assembly 4 and the curing assembly 3 can then be adjusted by the telescopic cylinder 12.

[0035] like Figure 4 , Figure 13 As shown, in order to adjust the orientation of the industrial camera 2 as needed and monitor the positions of the safety helmet and curing lamp 31, an ear plate 21 is installed on the industrial camera 2. The ear plate 21 is connected to the sleeve frame 24, and a polygonal shaft 22 is provided through the ear plate 21 and through the polygonal hole 25 of the sleeve frame 24. While ensuring a stable connection between the industrial camera 2 and the sleeve frame 24, the tilt angle of the industrial camera 2 can be easily adjusted as needed. The sleeve frame 24 is fitted onto the vertical plate 11. The vertical section of the vertical plate 11 is provided with a snap-fit ​​groove 14 along its height. An inlet / outlet groove 15 is provided at the end of the snap-fit ​​groove 14. Therefore, the snap-fit ​​post 23 installed on the inner side wall of the sleeve frame 24 is located in the snap-fit ​​groove 14. This configuration can utilize the deformation characteristics of the sleeve 24 to clamp it at a certain position on the vertical plate 11, or use bolts to connect the sleeve 24 and the vertical plate 11. That is, multiple channels are provided in the height direction of the vertical plate 11, and bolts are installed through the sleeve 24, with the bolts passing through a certain channel.

[0036] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A 360-degree all-around safety helmet printing device, comprising a printing unit, a conveyor located on the side of the printing unit, and a robotic arm horizontally positioned above the printing unit and the conveyor, the robotic arm capable of transferring safety helmets from the printing unit to the conveyor, characterized in that, It also includes a curing device, which includes The support (1) is detachably connected to the frame of the conveyor at its bottom, and the top of the support (1) is set to be adjustable in length. Multiple curing components (3), each curing component (3) includes a curing lamp (31), a connecting shaft (32) located on the back side of the curing lamp (31) and a support plate (33) connected to the connecting shaft (32). The support plate (33) is adjustable and passes through the connecting shaft (32). The angle between the curing lamp (31) and the support plate (33) is adjustable. The drive assembly (4) is installed on top of multiple curing assemblies (3) and below the bracket (1). The drive assembly (4) drives the curing lamp (31) to reciprocate. An industrial camera (2) is mounted on the vertical section of the bracket (1) to monitor the position of the safety helmet relative to the curing component (3) in real time.

2. The 360-degree all-around safety helmet printing equipment according to claim 1, characterized in that, Two connecting discs (311) are fixedly installed on the back side of the curing lamp (31). The connecting shaft (32) is located between the two connecting discs (311), and the threaded post (321) installed at the end of the connecting shaft (32) passes through the connecting disc (311). The nut sleeved on the threaded post (321) squeezes the connecting disc (311) to fit the connecting shaft (32).

3. The 360-degree all-around safety helmet printing equipment according to claim 2, characterized in that, Multiple protrusions (312) and grooves (322) are provided on the end faces where the connecting disc (311) and the connecting shaft (32) contact. The multiple protrusions (312) and grooves (322) are evenly distributed along the circumferential direction, and the protrusions (312) extend into the grooves (322).

4. The 360-degree all-around safety helmet printing equipment according to claim 1, characterized in that, A notch (323) is provided in the middle of the connecting shaft (32), and positioning grooves (325) are provided at both ends of the notch (323); a clamping plate (326) is provided at the notch (323) by bolts, and the end of the clamping plate (326) extends into the positioning groove (325).

5. The 360-degree all-around safety helmet printing equipment according to claim 4, characterized in that, The support plate (33) is configured as an L-shaped structure, and a sliding hole (331) is provided on the vertical section of the support plate (33); the vertical section of the support plate (33) is configured to pass through the space formed by the notch (323) and the clamping plate (326), and the bolt is provided through the sliding hole (331); a limiting post (324) is fixedly provided on the side wall opposite to the clamping plate (326) and the notch (323), and multiple limiting grooves (332) are evenly distributed along the height direction on the vertical section of the support plate (33), and the limiting post (324) extends into the corresponding limiting groove (332).

6. The 360-degree all-around safety helmet printing equipment according to claim 1, characterized in that, The drive assembly (4) includes a central shaft (41), a support tube (42), a torsion spring (43), a connecting disc assembly (44), a driven gear (45), an incomplete gear (46), and a motor (47). The bottom of the central shaft (41) is connected to the connecting disc assembly (44) via a bearing. The support tube (42) is bolted to the upper middle part of the central shaft (41). The two ends of the torsion spring (43) are connected to the support tube (42) and the connecting disc assembly (44) respectively. The driven gear (45) is mounted on the connecting disc assembly (44). The incomplete gear (46) is located on the side of the driven gear (45) and is mounted on the power output shaft of the motor (47). The motor (47) is mounted on the side of the support tube (42). The torsion spring (43) and the motor (47) work together to control the reciprocating rotation of the connecting disc assembly (44).

7. A 360-degree all-around safety helmet printing device according to claim 6, characterized in that, The support tube (42) and the connecting plate assembly (44) are provided with slots (445) on their sidewalls that are close to each other. Fixing plates (431) are fixedly provided at both ends of the torsion spring (43). The fixing plates (431) are connected to the support tube (42) and the connecting plate assembly (44) by bolts, and the end of the torsion spring (43) is inserted into the slot (445).

8. A 360-degree all-around safety helmet printing device according to claim 6, characterized in that, The connecting plate assembly (44) includes a bottom cylinder (441), a bottom ring plate (442) installed at the bottom of the bottom cylinder (441), and a top ring plate (443) sleeved in the upper part of the bottom cylinder (441). The top ring plate (443) and the bottom ring plate (442) are connected by bolts. Annular grooves (444) are provided on the side walls of the top ring plate (443) and the bottom ring plate (442) near each other. An arc-shaped end plate (333) is fixedly provided at the end of the horizontal section of the support plate (33). The upper and lower ends of the arc-shaped end plate (333) extend into the annular groove (444).

9. A 360-degree all-around safety helmet printing device according to claim 6, characterized in that, The side wall of the central shaft (41) is provided with a vertical groove (412) and a threaded groove (411); the bracket (1) includes an L-shaped vertical plate (11), a telescopic cylinder (12) installed on the top of the vertical plate (11) and a sleeve (17) installed on the telescopic end of the telescopic cylinder (12). The vertical rod (16) installed on the top of the sleeve (17) passes through the through hole (13) on the top of the vertical plate (11); the sleeve (17) is connected by bolts and sleeved on the top of the central shaft (41), and the locking pin (18) installed on the inner side wall of the sleeve (17) extends into the vertical groove (412).

10. A 360-degree all-around safety helmet printing device according to claim 9, characterized in that, The vertical section of the vertical plate (11) is provided with a snap-fit ​​groove (14) along its height, and an inlet / outlet groove (15) is provided at the end of the snap-fit ​​groove (14); an ear plate (21) is installed on the industrial camera (2), the ear plate (21) is connected to the frame (24), and a polygonal shaft (22) is provided through the ear plate (21) and a polygonal hole (25) is provided through the frame (24); the frame (24) is fitted on the vertical plate (11), and the snap-fit ​​post (23) installed on the inner side wall of the frame (24) is located in the snap-fit ​​groove (14).

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