A fully automatic intelligent assembling device for a safety helmet inner liner and shell

Abstract

This invention relates to the field of safety helmet assembly technology and discloses a fully automatic intelligent assembly device for safety helmet liner and shell. The device includes a processing table with several support columns installed in the center and mounting frames installed at the top of the support columns. It also includes a shell seat, clamping components, and elastic separation components. Multiple sets of shell seats and clamping components are arranged circumferentially along the processing table. The shell seats are arranged on the processing table, and the clamping components are correspondingly mounted on the mounting frames. Each set of shell seats and corresponding clamping components are arranged perpendicularly and directly opposite each other. This invention avoids problems such as buckle breakage, shell cracking, and assembly misalignment defects caused by applying continuous, non-actively release residual stress to already engaged buckles and slots. Simultaneously, buckles that are not yet engaged can continuously withstand downward pressure, ensuring that all buckles can be fully engaged in the slots, significantly improving assembly consistency and product yield.

Description

Technical Field

[0001] This invention relates to the field of safety helmet assembly technology, specifically a fully automatic intelligent assembly device for safety helmet liner and shell. Background Technology

[0002] In the automated assembly process of the helmet liner and shell, the shell is usually inverted and fixed in the contour positioning groove. Then, an internal support mechanical claw is used to open and grasp the liner from the inside, so that the outer contour of the liner matches the inside of the shell, and the multiple buckles are aligned vertically with the corresponding slots on the shell. Subsequently, the mechanical claw drives the liner to move downward, and through a one-time pressing action, drives the multiple buckles to simultaneously engage with their respective slots.

[0003] However, in actual production, due to limitations in the injection molding tolerances of the shell and liner, assembly positioning accuracy, and differences in the mating states of each snap-fit ​​and slot, multiple snap-fits are prone to asynchronous movement during the pressing process. To solve this problem, existing technologies typically incorporate elastic elements in the pressing transmission chain of each snap-fit ​​to provide a certain degree of flexibility. Once some snap-fits have engaged, the mechanical gripper can continue to drive the entire liner downwards, relying on the compression allowance of the elastic elements, until all snap-fits are engaged.

[0004] However, to ensure that all clips can eventually engage, the robotic gripper must continue to drive downwards to further compress the elastic components corresponding to the engaged clips. During this process, the elastic components are subjected to a continuous, non-releasable residual stress on the engaged clips due to the forced compression. For clip structures that are usually made of engineering plastics, long-term or excessive residual stress can easily cause material creep, stress whitening, or even microcracks and fractures, thus posing a serious threat to the product assembly quality and long-term reliability.

[0005] To address the problems mentioned above, those skilled in the art have proposed a fully automated intelligent assembly device for the helmet liner and shell. Summary of the Invention

[0006] The purpose of this invention is to provide a fully automatic intelligent assembly device for helmet liner and shell, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A fully automatic intelligent assembly device for a safety helmet liner and shell includes a processing table, several support columns installed in the middle of the processing table, and an mounting frame installed at the top of the support columns. It also includes a shell base, a clamping component, and an elastic separation component.

[0009] The housing base and clamping component are arranged in multiple sets along the circumference of the processing table. The housing base is arranged on the processing table, and the clamping component is correspondingly assembled on the mounting frame. Each set of housing bases and corresponding clamping components are arranged perpendicularly and directly opposite each other.

[0010] The clamping component includes a lifting part, a driving part, and a top support part; the lifting part is connected to the mounting frame and is used to drive the entire safety helmet liner being clamped to move vertically downward. An inner support block is installed at the telescopic end of the lifting part, and a driving part is provided inside the inner support block. The driving part is connected to several top support parts, and the driving part drives several top support parts to extend outward radially synchronously, opening them from the inside of the liner to achieve centering and clamping of the liner.

[0011] The top support includes an L-shaped top support seat, a slide rail is vertically installed on the inner side of the top support seat, an arc-shaped top support plate is slidably mounted on the slide rail, and a pressure plate is provided at the top of the outer arc surface of the arc-shaped top support plate.

[0012] The elastic separation component is connected to the top support portion, and the elastic separation component includes an elastic seat, an elastic part, a separation part, and a reset part;

[0013] The elastic seat is fixed to the top of the top support seat. A sliding cavity is provided inside the elastic seat. A slider is slidably arranged inside the sliding cavity. A vertically arranged elastic rod is installed at the bottom of the slider. The elastic rod is connected to the top of the arc-shaped top support plate, and the elastic rod and the bottom of the elastic seat form a sliding fit.

[0014] The elastic part is disposed in the sliding cavity and connected to the slider, and can provide elastic force to the slider;

[0015] The separation part is located on both sides of the elastic seat slide cavity and is used to limit and constrain the elastic part. When the slider is squeezed by the assembly pressure and the elastic part is displaced, the separation part simultaneously releases the limit lock on the elastic part, so that the elastic part and the slider can slide freely in the slide cavity and adaptively unload and avoid force.

[0016] The reset part is located between the mounting frame and the elastic seat. During the process of the inner liner and the shell being pressed together and the clamping component being reset as the lifting part moves upward, the reset part can drive the elastic part and the separation part to return to the initial limit state in a coordinated manner, so that the elastic part can reapply elastic pre-tightening effect to the slider, thus preparing for the next clamping and assembly cycle.

[0017] As a preferred embodiment of the present invention, the elastic part includes a movable block that slides with the sliding cavity, a second spring is provided between the movable block and the slider, a limit groove is formed in the elastic rod, a limit block is slidably provided in the limit groove, a connecting rod is installed between the limit block and the movable block, the connecting rod forms a sliding fit with the slider and the top of the elastic rod, and a stop block is provided on the inner wall of the sliding cavity between the slider and the movable block.

[0018] As a preferred embodiment of the present invention, the separation part includes movable cavities opened on both sides of the elastic seat slide cavity. A rotating shaft is rotatably arranged in the middle of the movable cavity, and a rotating frame is installed on the rotating shaft. A pushing inclined block facing the slide cavity is provided at the bottom end of the rotating frame, and a locking block facing the slide cavity is provided at the top end. The movable block has locking grooves on both sides that engage with the locking block. A third spring connected to the rotating frame is provided in the movable cavity.

[0019] As a preferred embodiment of the present invention, the reset part includes a reset hole opened at the top of the elastic seat, and a reset rod corresponding to the reset hole is installed at the bottom of the mounting bracket.

[0020] As a preferred embodiment of the present invention, the driving unit includes multiple driving rods arranged circumferentially. The driving rods are slidably engaged with the inner support block, and the outer ends of the driving rods are connected to the top support seat. A connecting plate is installed on one side of the driving rod inside the inner support block. The connecting plate is connected to the inner wall of the inner support block through a first spring. A driving shaft is rotatably arranged inside the inner support block. A driving disc is installed on the driving shaft. Several protrusions corresponding to the driving rods are installed on the outer wall of the driving disc. A motor is installed at the top of the inner support block, and the output end of the motor is connected to the driving shaft for transmission.

[0021] As a preferred embodiment of the present invention, the lifting part includes a first telescopic member mounted on the mounting frame, and a lifting frame is mounted on the bottom telescopic end of the first telescopic member, the lifting frame being connected to the inner support block.

[0022] As a preferred embodiment of the present invention, the housing base is provided with a contour groove, which is used to accommodate the inverted safety helmet housing and to limit the shape and position the housing.

[0023] As a preferred embodiment of the present invention, it further includes a fixing component, which includes a plurality of negative pressure adsorption holes formed in the housing base and connected to the contour groove. An adsorption tube connected to the negative pressure adsorption holes is connected to the outer wall of the housing base. The adsorption tube is connected to a negative pressure pump installed in the middle of the processing table.

[0024] As a preferred embodiment of the present invention, it further includes an ejector component, which includes a movable groove formed at the bottom of the housing base, an ejector plate slidably disposed in the movable groove, ejector blocks symmetrically distributed on the ejector plate, an ejector groove adapted to the ejector blocks formed in the contour groove, and a second telescopic component connected to the ejector plate installed at the bottom of the processing table.

[0025] The present invention has the following advantages: The present invention uses a clamping component to perform an internal support clamping on the inner liner of the safety helmet. When the clamping component carries the clamped inner liner downward and drives the inner liner buckle to press and engage with the shell groove, the elastic force applied by the elastic part to the slider is greater than the pressing force required for the buckle to engage with the groove. Therefore, during the pressing and engaging process of the inner liner buckle and the groove, the elastic part does not deform, and the arc-shaped top support plate, together with the pressure plate, can stably press the buckle into the groove.

[0026] When multiple sets of buckles and slots press asynchronously, and some buckles complete engagement first, as the clamping components and lining continue to press down as a whole, the buckles and slots that have completed engagement will apply limiting resistance to the arc-shaped top support plate, forcing the slider to move upward relative to the sliding cavity. During this process, the separating part simultaneously releases the limiting constraint on the elastic part, allowing the elastic part and the slider to slide freely along the sliding cavity, thereby releasing the continuous downward pressure applied to the buckles and slots that have completed engagement when the clamping mechanism moves downward.

[0027] This invention can avoid problems such as buckle breakage, shell cracking, and assembly misalignment caused by applying continuous and non-actively release residual stress to buckles and slots that have already been engaged. At the same time, buckles that have not been engaged can continuously withstand downward pressure, ensuring that all buckles can be fully engaged in the slots, which significantly improves assembly consistency and product yield. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of a fully automated intelligent assembly device for a safety helmet liner and shell.

[0029] Figure 2 This is a schematic diagram of the clamping component in a fully automated intelligent assembly device for a safety helmet liner and shell.

[0030] Figure 3 This is a schematic diagram of the top support in a fully automated intelligent assembly device for a safety helmet liner and shell.

[0031] Figure 4 This is a cross-sectional schematic diagram of the interior of the inner support block in a fully automated intelligent assembly device for a safety helmet liner and shell.

[0032] Figure 5 This is a schematic diagram of the reset rod in a fully automated intelligent assembly device for a safety helmet liner and shell.

[0033] Figure 6 This is a schematic diagram of the internal structure of the elastic seat in a fully automated intelligent assembly device for a safety helmet liner and shell.

[0034] Figure 7 This is a planar sectional view of the elastic seat in a fully automated intelligent assembly device for a safety helmet liner and shell.

[0035] Figure 8 This is a schematic diagram of the structure of a fully automated intelligent assembly device for a safety helmet liner and shell, showing the cooperation between a movable block and a rotating frame.

[0036] Figure 9 This is a schematic diagram of the structure of a fixing component in a fully automated intelligent assembly device for a safety helmet liner and shell.

[0037] Figure 10 This is a schematic diagram of the ejector component in a fully automated intelligent assembly device for a safety helmet liner and shell.

[0038] In the diagram: 110, processing table; 120, support column; 130, mounting bracket; 210, housing seat; 220, contour groove; 3, clamping component; 310, lifting part; 311, first telescopic component; 312, lifting frame; 320, inner support block; 330, drive part; 331, drive shaft; 332, drive disc; 333, protrusion; 334, drive rod; 335, connecting plate; 336, first spring; 337, motor; 340, top support part; 341, top support seat; 342, slide rail; 343, arc-shaped top support plate; 344, pressure plate; 4, elastic separation component; 410, elastic seat; 420, sliding cavity; 430, slider; 440, elastic rod 450. Elastic part; 451. Movable block; 452. Stop block; 453. Second spring; 454. Connecting rod; 455. Limiting plate; 456. Limiting groove; 460. Separation part; 461. Movable cavity; 462. Rotating shaft; 463. Rotating frame; 464. Third spring; 465. Locking block; 466. Locking groove; 467. Pushing inclined block; 470. Reset part; 471. Reset hole; 472. Reset rod; 5. Fixed part; 510. Negative pressure adsorption hole; 520. Adsorption tube; 530. Negative pressure pump; 6. Ejection part; 610. Ejection groove; 620. Ejection block; 630. Ejection plate; 640. Moving groove; 650. Second telescopic part. Detailed Implementation

[0039] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0040] Please see Figures 1-10 A fully automatic intelligent assembly device for a safety helmet liner and shell includes a processing table 110, a plurality of support columns 120 installed in the middle of the processing table 110, and an mounting frame 130 installed at the top of the support columns 120. It also includes a shell base 210, a clamping component 3 and an elastic separation component 4.

[0041] The housing base 210 and the clamping component 3 are arranged in multiple sets along the circumference of the processing table 110. The housing base 210 is arranged on the processing table 110, and the clamping component 3 is correspondingly assembled on the mounting frame 130. Each set of housing base 210 and the corresponding clamping component 3 are arranged perpendicularly to each other.

[0042] The clamping component 3 includes a lifting part 310, a driving part 330, and a top support part 340. The lifting part 310 is connected to the mounting frame 130 and is used to drive the entire safety helmet liner being clamped to move vertically downward. An inner support block 320 is installed at the telescopic end of the lifting part 310. The driving part 330 is provided inside the inner support block 320. The driving part 330 is connected to several top support parts 340. The driving part 330 drives several top support parts 340 to extend outward radially in sync, opening them from the inside of the liner to achieve centering and clamping of the liner.

[0043] The top support 340 includes an L-shaped top support seat 341. A slide rail 342 is vertically installed on the inner side of the top support seat 341. An arc-shaped top support plate 343 is slidably mounted on the slide rail 342. A pressure plate 344 is provided at the top of the outer arc surface of the arc-shaped top support plate 343 for fitting and supporting the inner wall of the inner lining to complete positioning and clamping.

[0044] The elastic separation component 4 is connected to the top support 340. The elastic separation component 4 includes an elastic seat 410, an elastic part 450, a separation part 460, and a reset part 470.

[0045] The elastic seat 410 is fixed to the top of the top support 341. A sliding cavity 420 is provided inside the elastic seat 410. A slider 430 is slidably arranged inside the sliding cavity 420. A vertically arranged elastic rod 440 is installed at the bottom of the slider 430. The elastic rod 440 is connected to the top of the arc-shaped top support plate 343, and the elastic rod 440 and the bottom of the elastic seat 410 form a sliding fit.

[0046] The elastic part 450 is disposed in the sliding cavity 420 and connected to the slider 430, and can provide elastic force to the slider 430;

[0047] The separation part 460 is disposed on both sides of the slide cavity 420 of the elastic seat 410 and is used to limit and constrain the elastic part 450. When the slider 430 is squeezed by the assembly pressure and the elastic part 450 is displaced, the separation part 460 simultaneously releases the limiting lock on the elastic part 450, so that the elastic part 450 together with the slider 430 can slide freely in the slide cavity 420 and adaptively unload and avoid force.

[0048] The reset part 470 is located between the mounting bracket 130 and the elastic seat 410. During the process of the inner liner and the shell being pressed together and the clamping component 3 being reset as the lifting part 310 moves upward, the reset part 470 can drive the elastic part 450 and the separation part 460 to return to the initial limit state in a coordinated manner, so that the elastic part 450 can reapply elastic pre-tightening action to the slider 430, thus preparing for the next clamping and assembly cycle.

[0049] The present invention uses the clamping component 3 to perform an internal support clamping on the safety helmet liner. When the clamping component 3 carries the clamped liner downward and drives the liner buckle to press and engage with the shell groove, the elastic force applied by the elastic part 450 to the slider 430 is greater than the pressing force required for the buckle to engage with the groove. Therefore, during the pressing and engaging process of the liner buckle and the groove, the elastic part 450 does not deform, and the arc-shaped top support plate 343, together with the pressure plate 344, can stably press the buckle into the groove.

[0050] When multiple sets of buckles and slots press asynchronously, and some buckles complete engagement first, as the clamping component 3 and the inner liner continue to press down as a whole, the buckles and slots that have completed engagement will apply limiting resistance to the arc-shaped top support plate 343, forcing the slider 430 to move upward relative to the sliding cavity 420. During this process, the separating part 460 simultaneously releases the limiting constraint on the elastic part 450, allowing the elastic part 450 and the slider 430 to slide freely along the sliding cavity 420, thereby releasing the continuous downward pressure applied to the buckles and slots that have completed engagement when the clamping mechanism moves downward.

[0051] This invention can avoid problems such as buckle breakage, shell cracking, and assembly misalignment caused by applying continuous and non-actively release residual stress to buckles and slots that have already been engaged. At the same time, buckles that have not been engaged can continuously withstand downward pressure, ensuring that all buckles can be fully engaged in the slots, which significantly improves assembly consistency and product yield.

[0052] Please see Figure 6 and Figure 7 In one embodiment, the elastic part 450 includes a movable block 451 that slides with the sliding cavity 420. A second spring 453 is provided between the movable block 451 and the slider 430. The second spring 453 is in a compressed state. A limiting groove 456 is formed in the elastic rod 440. A limiting block is slidably provided in the limiting groove 456. A connecting rod 454 is installed between the limiting block and the movable block 451. The connecting rod 454 forms a sliding fit with the slider 430 and the top of the elastic rod 440. A stop block 452 is provided on the inner wall of the sliding cavity 420 between the slider 430 and the movable block 451.

[0053] In the initial state, relying on the limiting and locking effect of the separating part 460 on the movable block 451, the movable block 451 is limited to the position of the stop block 452 and maintains the initial fixed posture; at this time, the pre-compressed second spring 453 can continuously apply a constant elastic preload to the slider 430, and the elastic force output by the second spring 453 is greater than the assembly pressure required for the buckle and the slot to complete the pressing and engaging; thus, during the alignment and pressing process of the inner liner buckle and the housing slot, the second spring 453 will not undergo compression deformation due to the assembly reaction force, so that the arc-shaped top support plate 343 and the pressure plate 344 can stably output the clamping force, and reliably press the buckle into the slot to complete the engaging.

[0054] Meanwhile, when the movable block 451 is in the initial fixed position, the limiting block connected to the bottom end of the connecting rod 454 is located at the top of the limiting groove 456 inside the elastic rod 440. This limiting structure can limit the stroke of the connecting rod 454 and the elastic rod 440 after the separation part 460 releases the limiting constraint on the movable block 451, restricting the unrestrained excessive rebound of the second spring 453, so that the second spring 453 can smoothly return to the preset initial state, ensuring the stability of the assembly structure and the motion matching accuracy between the movable block 451, the slider 430 and the elastic rod 440. At the same time, it is also convenient for the elastic part 450 to quickly return to the initial working state after reset, ensuring the reliability and consistency of the next assembly operation.

[0055] Furthermore, the separation part 460 includes movable cavities 461 opened on both sides of the sliding cavity 420 of the elastic seat 410. A rotating shaft 462 is rotatably arranged in the middle of the movable cavity 461. A rotating frame 463 is mounted on the rotating shaft 462. A pushing inclined block 467 facing the sliding cavity 420 is provided at the bottom end of the rotating frame 463, and a locking block 465 facing the sliding cavity 420 is provided at the top end. The movable block 451 has locking grooves 466 on both sides that engage with the locking block 465. A third spring 464 connected to the rotating frame 463 is provided in the movable cavity 461. The third spring 464 is in a compressed state.

[0056] In the initial state, under the elastic force of the elastic part 450, the slider 430 is located at the bottom of the sliding cavity 420. Relying on the limiting effect of the slider 430, the push-in inclined block 467 at the bottom of the rotating frame 463 is squeezed into the movable cavity 461. Since the rotating frame 463 can rotate freely around the rotating shaft 462, the locking block 465 at the top of the rotating frame 463 will simultaneously lock into the locking groove 466 of the movable block 451, realizing the initial limiting and locking of the movable block 451, ensuring that the movable block 451 is kept in the initial fixed position.

[0057] After the inner liner buckles and some of the buckles in the housing slots have engaged, the clamping component 3 will drive the inner liner to continue to press down as a whole to complete the engagement of the remaining buckles. During this process, the buckles that have already engaged form a limiting constraint on the elastic rod 440 and the slider 430, preventing the elastic rod 440 and the slider 430 from moving down synchronously with the clamping component 3. This causes the slider 430 to slide upward relative to the sliding cavity 420 and compress the second spring 453, which is in a pre-compressed state. The slider 430 slides upward. During the process, the squeezing limit on the bottom pusher block 467 of the rotating frame 463 is gradually released, the pre-compressed third spring 464 releases its elastic force, and drives the rotating frame 463 to rotate around the rotating shaft 462, so that the pusher block 467 at the bottom of the rotating frame 463 extends into the sliding cavity 420. At the same time, the top of the rotating frame 463 drives the locking block 465 to exit from the locking groove 466 of the movable block 451, releasing all the limiting constraints on the movable block 451, so that the movable block 451 is in an unconstrained free state.

[0058] After the movable block 451 is released from its constraint, the pre-compressed second spring 453 releases its elastic force, driving the movable block 451 to slide upward along the slide cavity 420 and move away from its initial fixed position. At the same time, through the linkage between the connecting rod 454 and the limiting block, the movable block 451, the slider 430 and the elastic rod 440 can maintain their initial overall assembly structure, ensuring that the three move synchronously, and preparing for the subsequent reset of the elastic part 450 and the next assembly operation.

[0059] Furthermore, the reset part 470 includes a reset hole 471 opened at the top of the elastic seat 410, and a reset rod 472 corresponding to the reset hole 471 is installed at the bottom of the mounting bracket 130.

[0060] After the clamping component 3 completes all the pressing and engaging operations of the inner liner buckle and the housing slot, the clamping component 3 initiates the rising and resetting procedure. During the process of the clamping component 3 driving the overall structure to rise and gradually return to the initial position, the reset rod 472 corresponding to the elastic seat 410 will be precisely inserted into the reset hole 471 at the top of the elastic seat 410, and apply a downward pushing force to the movable block 451, driving the movable block 451 to slide vertically down the slide cavity 420 until the movable block 451 abuts against the stop block 452 on the inner wall of the slide cavity 420, returning to the initial fixed position.

[0061] At the same time, under the elastic force of the second spring 453, the slider 430 moves downward synchronously and returns to its initial position (i.e., the bottom of the slide cavity 420). When the slider 430 returns to the bottom of the slide cavity 420, the slider 430 will exert a squeezing force on the push-up block 467 at the bottom of the rotating frame 463, pushing the push-up block 467 out of the slide cavity 420 and into the movable cavity 461, forcing the rotating frame 463 to rotate in the opposite direction around the rotating shaft 462. During the rotation of the rotating frame 463, the locking block 465 at its top is reset synchronously and re-locked into the locking groove 466 of the movable block 451 that has returned to its initial position, realizing the overall structural reset of the separation part 460, the elastic part 450 and the top support part 340, ensuring that the device returns to its initial working state and is ready for the next assembly operation of the inner liner and the shell.

[0062] Please see Figure 1 , Figure 2 and Figure 4 In one embodiment, the drive unit 330 includes multiple drive rods 334 arranged circumferentially. The drive rods 334 are slidably engaged with the inner support block 320. The outer ends of the drive rods 334 are connected to the top support seat 341. A connecting plate 335 is installed on one side of the drive rods 334 inside the inner support block 320. The connecting plate 335 is connected to the inner wall of the inner support block 320 through a first spring 336. A drive shaft 331 is rotatably arranged inside the inner support block 320. A drive disk 332 is installed on the drive shaft 331. A plurality of protrusions 333 corresponding to the drive rods 334 are installed on the outer wall of the drive disk 332. A motor 337 is installed at the top of the inner support block 320. The output end of the motor 337 is connected to the drive shaft 331 for transmission.

[0063] Furthermore, the lifting part 310 includes a first telescopic member 311 mounted on the mounting frame 130. The specific structure of the first telescopic member 311 is not limited and can be a hydraulic rod or an electric push rod, which will not be described in detail here. The bottom telescopic end of the first telescopic member 311 is equipped with a lifting frame 312, which is connected to the inner support block 320.

[0064] Specifically, during assembly, the equipment controller issues a control command to start the first telescopic component 311. The first telescopic component 311 drives the connected lifting frame 312 to perform vertical lifting and lowering movements through the telescopic movement of its telescopic end. The lifting frame 312 simultaneously drives the lower inner support block 320 to rise and fall together. The drive part 330 and the top support part 340 integrated on the inner support block 320 have completed the inner support clamping of the inner liner. Therefore, the inner liner will rise and fall synchronously with the inner support block 320, thereby achieving precise alignment and pressing and snapping of the inner liner and the safety helmet shell that is inverted and fixed in the contour groove 220 of the shell seat 210, and finally completing the assembly operation of the two.

[0065] Please see Figure 1In one embodiment, the housing base 210 is provided with a contour groove 220, which is used to accommodate the inverted safety helmet housing and to limit the shape and position the housing.

[0066] Specifically, the safety helmet shell is transported to the shell seat 210 station by an external conveying mechanism, and then the robot arm grabs the safety helmet shell and inverts it to place it in the contour groove 220. The contour of the contour groove 220 is used to achieve preliminary circumferential and vertical positioning of the shell, providing a stable reference for the subsequent alignment and pressing of the inner liner.

[0067] Please see Figure 9 In one embodiment, a fixing component 5 is also included. The fixing component 5 includes a plurality of negative pressure adsorption holes 510 formed in the housing seat 210 and connected to the contour groove 220. An adsorption tube 520 connected to the negative pressure adsorption holes 510 is connected to the outer wall of the housing seat 210. The adsorption tube 520 is connected to a negative pressure pump 530 installed in the middle of the processing table 110.

[0068] Specifically, during assembly, after the safety helmet shell is inverted and placed into the contour groove 220 and initially positioned, the negative pressure pump 530 is started by the equipment controller. The negative pressure pump 530 generates negative pressure, which is transmitted to each negative pressure adsorption hole 510 through the adsorption tube 520. This generates a uniform adsorption force on the shell in the contour groove 220, firmly fixing the shell in the contour groove 220. This prevents the shell from shifting, warping, or loosening during the pressing and snapping process between the inner liner and the shell, ensuring the alignment accuracy of the buckle and the groove and the assembly stability.

[0069] Please see Figure 10 In one embodiment, the device further includes an ejector component 6, which includes a movable groove 640 formed at the bottom of the housing base 210. An ejector plate 630 is slidably disposed in the movable groove 640. Ejector blocks 620 are symmetrically distributed on the ejector plate 630. An ejector groove 610 adapted to the ejector blocks 620 is formed in the contour groove 220. A second telescopic member 650 connected to the ejector plate 630 is installed at the bottom of the processing table 110. The specific structure of the second telescopic member 650 is not limited and can be a hydraulic rod or an electric push rod, which will not be described in detail here.

[0070] Specifically, after the inner liner and the shell are fully snapped together, the negative pressure pump 530 of the fixing component 5 stops working and releases the suction fixation on the shell; then, the equipment controller starts the second telescopic component 650, the telescopic end of the second telescopic component 650 extends upward, driving the ejector plate 630 to slide upward along the moving groove 640. The ejector plate 630 simultaneously drives the ejector block 620 to move upward along the ejector groove 610. The top of the ejector block 620 abuts against the bottom of the assembled safety helmet, smoothly ejecting it from the contour groove 220, making it easy for the subsequent robot arm to grasp and transport it to the next process, realizing the automated closed loop of the assembly process.

[0071] The working principle of this invention is as follows: After the assembly operation is started, the external conveying mechanism continuously conveys the safety helmet shell and the inner liner to the shell seat 210 station and the clamping component 3 station respectively; the robot grabs the safety helmet shell and inverts it to place it in the contour groove 220 of the shell seat 210. Then the fixing component 5 is activated to stabilize and limit the shell in the contour groove 220 to prevent displacement during subsequent assembly.

[0072] At the same time, the lifting unit 310 drives the inner support block 320 to extend into the inner liner to be assembled, the driving unit 330 starts and drives the top support unit 340 to extend outward radially in sync, so as to realize the inner support clamping of the inner liner; the external auxiliary mechanism simultaneously makes adaptive fine adjustments to the posture of the inner liner to ensure that all the buckles on the clamped inner liner are precisely aligned with the corresponding buckles of the inner fixed shell in the contour groove 220, thus completing the preliminary alignment preparation work for the assembly of the safety helmet shell and the inner liner.

[0073] After the initial preparation is completed, the lifting unit 310 drives the clamped inner liner to descend vertically, so that the multiple sets of buckles on the inner liner are aligned with the multiple sets of slots on the inner wall of the housing. Then, the clamping component 3 continues to press the inner liner down, and the arc-shaped top support plate 343 of the top support 340, together with the top pressure plate 344, applies uniform downward pressure to the inner liner, thereby gradually pressing the multiple sets of buckles on the inner liner into the corresponding slots and starting the snap-fit ​​assembly.

[0074] When the pressing and locking actions of multiple sets of buckles and slots are not synchronized, and some buckles complete the locking and locking first, as the clamping component 3 and the inner liner continue to be pressed down as a whole, the buckles and slots that have completed the locking will generate reverse limiting resistance on the arc-shaped top support plate 343, forcing the slider 430 to move upward relative to the sliding cavity 420 of the elastic seat 410; during this process, the separation part 460 is simultaneously triggered and releases the limiting constraint on the elastic part 450, so that the elastic part 450 and the slider 430 can slide freely along the sliding cavity 420, thereby effectively releasing the continuous downward pressure applied to the buckles and slots that have completed the locking when the clamping mechanism moves downward, and avoiding structural damage caused by residual stress.

[0075] Once all the clips have been engaged and the assembly is complete, the clamping component 3 initiates the rising and resetting procedure. As the clamping component 3 gradually returns to its initial position, the resetting part 470 operates synchronously, driving the elastic separation component 4 (elastic part 450, separation part 460) to complete the overall resetting and return to the initial working state, preparing for the next assembly cycle.

[0076] The power supply and control of the electrical equipment in this application are all existing technologies and will not be elaborated upon here. The control of each component can be achieved using a PLC controller disclosed in the prior art, and the model and circuit connection of each component are not specifically limited. All electrical equipment involved are existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The scope of protection of this invention does not involve improvements to the software and methods.

[0077] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0078] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fully automated intelligent assembly device for a safety helmet liner and shell, comprising a processing table, a plurality of support columns mounted in the middle of the processing table, and mounting brackets mounted on the tops of the support columns, characterized in that, Also includes: Housing base, clamping components, and elastic separation components; The housing base and clamping component are arranged in multiple sets along the circumference of the processing table. The housing base is arranged on the processing table, and the clamping component is correspondingly assembled on the mounting frame. Each set of housing bases and corresponding clamping components are arranged perpendicularly and directly opposite each other. The clamping component includes a lifting part, a driving part, and a top support part; the lifting part is connected to the mounting frame and is used to drive the entire safety helmet liner being clamped to move vertically downward. An inner support block is installed at the telescopic end of the lifting part, and a driving part is provided inside the inner support block. The driving part is connected to several top support parts, and the driving part drives several top support parts to extend outward radially synchronously, opening them from the inside of the liner to achieve centering and clamping of the liner. The top support includes an L-shaped top support seat, a slide rail is vertically installed on the inner side of the top support seat, an arc-shaped top support plate is slidably mounted on the slide rail, and a pressure plate is provided at the top of the outer arc surface of the arc-shaped top support plate. The elastic separation component is connected to the top support portion, and the elastic separation component includes an elastic seat, an elastic part, a separation part, and a reset part; The elastic seat is fixed to the top of the top support seat. A sliding cavity is provided inside the elastic seat. A slider is slidably arranged inside the sliding cavity. A vertically arranged elastic rod is installed at the bottom of the slider. The elastic rod is connected to the top of the arc-shaped top support plate, and the elastic rod and the bottom of the elastic seat form a sliding fit. The elastic part is disposed in the sliding cavity and connected to the slider, and can provide elastic force to the slider; The separation part is located on both sides of the elastic seat slide cavity and is used to limit and constrain the elastic part. When the slider is squeezed by the assembly pressure and the elastic part is displaced, the separation part simultaneously releases the limit lock on the elastic part, so that the elastic part and the slider can slide freely in the slide cavity and adaptively unload and avoid force. The reset part is located between the mounting frame and the elastic seat. During the process of the inner liner and the shell being pressed together and the clamping component being reset as the lifting part moves upward, the reset part can drive the elastic part and the separation part to return to the initial limit state in a coordinated manner, so that the elastic part can reapply elastic pre-tightening effect to the slider, thus preparing for the next clamping and assembly cycle.

2. The fully automatic intelligent assembly device for the helmet liner and shell according to claim 1, characterized in that, The elastic part includes a movable block that slides with the sliding cavity, a second spring is provided between the movable block and the slider, a limit groove is opened in the elastic rod, a limit block is slidably arranged in the limit groove, a connecting rod is installed between the limit block and the movable block, the connecting rod forms a sliding fit with the slider and the top of the elastic rod, and a stop block is provided on the inner wall of the sliding cavity between the slider and the movable block.

3. The fully automatic intelligent assembly device for the safety helmet liner and shell according to claim 2, characterized in that, The separation section includes movable cavities on both sides of the elastic seat slide cavity. A rotating shaft is rotatably arranged in the middle of the movable cavity, and a rotating frame is installed on the rotating shaft. A pushing inclined block facing the slide cavity is provided at the bottom end of the rotating frame, and a locking block facing the slide cavity is provided at the top end. The movable block has locking grooves on both sides that engage with the locking block. A third spring connected to the rotating frame is provided inside the movable cavity.

4. The fully automatic intelligent assembly device for the helmet liner and shell according to claim 3, characterized in that, The reset part includes a reset hole at the top of the elastic seat, and a reset rod corresponding to the reset hole is installed at the bottom of the mounting bracket.

5. The fully automatic intelligent assembly device for the helmet liner and shell according to claim 1, characterized in that, The drive unit includes multiple drive rods arranged circumferentially. The drive rods slide in conjunction with the inner support block. The outer ends of the drive rods are connected to the top support seat. A connecting plate is installed on one side of the drive rod inside the inner support block. The connecting plate is connected to the inner wall of the inner support block through a first spring. A drive shaft is rotatably installed inside the inner support block. A drive disc is installed on the drive shaft. Several protrusions corresponding to the drive rods are installed on the outer wall of the drive disc. A motor is installed at the top of the inner support block. The output end of the motor is connected to the drive shaft for transmission.

6. The fully automatic intelligent assembly device for the helmet liner and shell according to claim 5, characterized in that, The lifting unit includes a first telescopic member mounted on a mounting frame. A lifting frame is mounted on the bottom telescopic end of the first telescopic member, and the lifting frame is connected to the inner support block.

7. The fully automatic intelligent assembly device for the helmet liner and shell according to claim 1, characterized in that, The housing base has a contour groove, which is used to accommodate the inverted safety helmet housing and to limit the shape and position the housing.

8. The fully automatic intelligent assembly device for the helmet liner and shell according to claim 7, characterized in that, It also includes a fixing component, which includes several negative pressure adsorption holes opened in the housing base and connected to the contour groove. An adsorption tube connected to the negative pressure adsorption holes is connected to the outer wall of the housing base. The adsorption tube is connected to a negative pressure pump installed in the middle of the processing table.

9. The fully automatic intelligent assembly device for the helmet liner and shell according to claim 8, characterized in that, It also includes an ejector component, which includes a movable groove at the bottom of the housing base, an ejector plate slidably disposed in the movable groove, ejector blocks symmetrically distributed on the ejector plate, an ejector groove adapted to the ejector blocks in the contour groove, and a second telescopic component connected to the ejector plate installed at the bottom of the processing table.

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