Lifting device for a lampshade injection molding machine

Abstract

This invention discloses a lifting device for a lampshade injection molding machine, belonging to the technical field of lifting equipment. The device includes a lifting assembly with a storage hopper at the bottom and a discharge end at the top, used to continuously lift and dump lampshades from the storage hopper; an alternating flow-diverting assembly located at the discharge end, used to alternately divert lampshades left and right; a spiral chute, connected in pairs below the alternating flow-diverting assembly and extending downwards in a vertical direction, used to provide spatial physical constraint on the lampshades to ensure a uniform orientation with the larger end facing up and the smaller end facing down; a recycling and feeding assembly connected to the bottom of the spiral chute, including a feeding unit and a recycling unit. The feeding unit receives the oriented lampshades and conveys them linearly to the output end, while the recycling unit collects the squeezed and slipped lampshades and returns them to the lifting assembly; and an end-flipping assembly located at the output end, used to receive the oriented lampshades and flip them to the correct orientation for gripping.

Description

Technical Field

[0001] This invention relates to the field of lifting equipment technology, and in particular to a lifting device for a lampshade injection molding machine. Background Technology

[0002] In existing automated injection molding production lines or subsequent assembly processes, lampshade parts typically require lifting equipment to transport them from a lower storage hopper to the next higher process. Currently, the industry commonly uses traditional bulk bucket elevators. Their conventional workflow involves a transmission mechanism driving the attached hoppers to lift batches of scattered lampshades from the bottom upwards. Once they reach the top tipping area, the lampshades are directly emptied from the hoppers, allowing them to fall freely under gravity onto the receiving chute or conveyor track below. They are then passively sorted and transported by subsequent mechanisms.

[0003] However, existing lifting equipment suffers from low material handling efficiency and severe ineffective cycles in practical applications. Because the lampshades themselves are thin-walled hollow frustums of a cone, larger at one end and smaller at the other, their initial falling posture is highly random when they are dumped in batches from the top of the elevator onto the conveyor plate. The existing conveyor plate only provides passive physical restraint and cannot actively correct the posture of lampshades with incorrect orientation. When subsequent feeding channels strictly require lampshades to maintain a specific posture with the larger end down and the smaller end up before entering the track, those lampshades that fall onto the conveyor plate with incorrect posture are prone to mutual compression at the channel opening, eventually derailing and sliding back into the storage hopper at the bottom. This material handling method, relying on passive restraint and probability screening through the conveyor plate, results in a large number of lampshades undergoing repeated ineffective cycles within the elevator, increasing lampshade wear and leading to a low overall yield of effective material handling.

[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0005] This invention provides a lifting device for a lampshade injection molding machine to solve the technical problem that existing equipment cannot actively correct the attitude of randomly falling lampshades, resulting in repeated ineffective cycles of a large number of lampshades and low overall material handling yield.

[0006] The present invention adopts the following technical solution: a lifting device for a lampshade injection molding machine, comprising... The lifting component has a storage hopper at the bottom and a discharge end at the top, which is used to continuously lift the lampshade in the storage hopper obliquely upward and pour it out from the discharge end. An alternating flow diversion component is disposed at the unloading end of the lifting component and is used to alternately divert the falling lampshade to the left and right. Spiral slides are connected in pairs below the alternating diversion components and extend in a spiraling and descending manner along the vertical direction of space to form the bottom end. They are used to provide spatial physical constraints on the lampshades after diversion, so that the lampshades are uniformly oriented with the large end facing up and the small end facing down. The recycling feeding assembly is connected to the bottom end of the spiral slide. It includes a feeding unit and a recycling unit. The feeding unit forms an output end on the side away from the spiral slide. The feeding unit is used to receive the oriented lampshade and convey it linearly to the output end. The recycling unit is used to collect the squeezed and slipped lampshade and return it to the lifting assembly. An end-flipping component, located at the output end of the recycling feeding component, is used to receive the directionally conveyed lampshade and flip the lampshade to the correct posture for subsequent gripping.

[0007] Furthermore, the alternating flow diversion assembly includes a mounting bracket, a slide rail, a bidirectional slide frame, two linear racks, a reducer, and a sector gear. The mounting bracket is fixed to the top of the lifting assembly, the slide rail is mounted on the mounting bracket, the bidirectional slide frame is horizontally slidably mounted on the slide rail, the two linear racks are respectively mounted on the upper and lower edges of the inner side of the bidirectional slide frame, and the sector gear is fixed to the output end of the reducer and located inside the bidirectional slide frame. It is used to alternately mesh with the linear racks on the upper and lower sides when the sector gear rotates continuously in one direction, so as to drive the bidirectional slide frame to perform intermittent reciprocating translation.

[0008] Furthermore, the alternating flow diversion assembly also includes a guide sleeve, a swing shaft, and a flow diversion baffle. The guide sleeve is fixedly connected to the bidirectional sliding frame. The swing shaft is L-shaped, and its vertical end is movably inserted into the guide sleeve. The horizontal end of the swing shaft is bearing-connected to the inner wall of the hopper at the discharge end of the lifting assembly. The flow diversion baffle is fixed on the horizontal end of the swing shaft and is used to deflect the swing shaft by the translation and pulling of the bidirectional sliding frame, thereby driving the flow diversion baffle to alternately open and close the two discharge ports at the bottom of the hopper.

[0009] Furthermore, the lifting assembly also includes a receiving plate and two diverting rods. The receiving plate is W-shaped and inclinedly arranged below the hopper, and has two corresponding discharge ends. The two diverting rods are U-shaped and symmetrically fixed at the connection between the receiving plate and the spiral slide below, for physically guiding the lampshade falling from the hopper.

[0010] Furthermore, the spiral slide has a limiting groove of a specific width inside, which is used to automatically tumble and adjust the lampshade when it falls into the spiral slide with a random posture, by utilizing the geometric characteristics of the lampshade's frustum shape, under the dual guidance of gravity and centripetal force. When it reaches the bottom end, it is forcibly constrained to the posture of the large end facing up and the small end facing down.

[0011] Furthermore, the feeding unit includes a feeding conveyor line, a T-shaped pressure plate, a baffle cylinder, and a baffle rod. The feeding end of the feeding conveyor line is respectively connected to the bottom end of the paired spiral slides. The T-shaped pressure plate is fixed above the feeding conveyor line to separate its feeding ends. The baffle cylinder is fixed at the output end of the feeding conveyor line. The baffle rod is fixed on the telescopic end of the baffle cylinder. The T-shaped pressure plate is used to prevent the lampshade from jumping out during conveying. The baffle cylinder is used to limit the passage of only two lampshades side by side at a time by telescopic extension.

[0012] Furthermore, the recycling unit includes a recycling conveyor and a receiving hopper. The receiving hopper is fixed to the two side plates at one end of the recycling conveyor and is located directly below the spiral slide. The other end of the recycling conveyor is mounted above the storage hopper. The receiving hopper is used to collect the misaligned lamp covers that have been squeezed off. The recycling conveyor is used to return the collected lamp covers to the lifting assembly.

[0013] Furthermore, the end-flipping assembly includes a support base frame, a flipping base box, photoelectric sensors, a flipping motor, a telescopic cylinder, and a sliding table. The flipping base box is rotatably mounted on the support base frame. Two photoelectric sensors are arranged side-by-side at the feed end of the flipping base box. The flipping motor is fixed on the support base frame and is connected to the flipping base box for transmission. The telescopic cylinder is fixed at the output end of the flipping motor. The piston rod of the telescopic cylinder extends movably into the interior of the flipping base box and is fixed to the sliding table. The two photoelectric sensors are used to detect whether the conveyed lampshade is in place. The flipping motor is used to drive the flipping base box to flip. The telescopic cylinder is used to provide linear driving force for subsequent lampshade clamping.

[0014] Furthermore, a displacement unit is provided on the upper and lower surfaces of the flipping base box. Each displacement unit includes a drive rack, a support base, a turntable, a rotating gear, two crank arms, and two clamping rods. The support base is fixed on the flipping base box, the turntable is rotatably mounted on the support base, the rotating gear is fixedly sleeved on the turntable, the two drive racks are respectively fixed on the upper and lower surfaces of the sliding table and mesh with the corresponding rotating gears, one end of each of the two crank arms is movably connected to the eccentricity of the turntable, and the other end is respectively hinged to the corresponding clamping rods. One end of each clamping rod is slidably mounted in a limiting groove opened on the upper surface of the flipping base box, which is used to convert the linear displacement of the drive rack into a synchronous opposite clamping or opposite releasing action of the two clamping rods.

[0015] Furthermore, the lifting assembly also includes a main lifting frame, a lifting conveyor belt, and a drive motor. The storage hopper is connected to the inclined bottom end of the main lifting frame. The lifting conveyor belt is arranged around the main lifting frame and has several lifting hoppers on its surface. The drive motor is located at the top of the main lifting frame and is used to drive the lifting conveyor belt to circulate through a chain to achieve continuous lifting of the lampshade.

[0016] The technical solutions adopted in the embodiments of the present invention can achieve the following beneficial effects: This invention discloses a lifting device for a lampshade injection molding machine. The lifting assembly continuously lifts the lampshades from the storage hopper upwards at an angle, achieving basic automated material supply. An alternating diversion assembly at the unloading end diverts the falling lampshades alternately to the left and right, effectively mitigating the problem of material compression on a single-sided track. Paired spiral slides provide spatial physical constraint on the diverted lampshades, and the spiral trajectory actively corrects the lampshade's posture, ensuring that lampshades entering subsequent processes have a uniform posture with the larger end facing up and the smaller end facing down. A feeding unit in the recovery feeding assembly performs linear directional conveying, and the recovery unit collects and returns any squeezed or slipped lampshades to the lifting assembly, reducing material rejection during the material handling process. Finally, an end-turning assembly at the output end receives the oriented lampshades and performs an overall spatial turn, adjusting the lampshades to a correct posture for easy gripping by the injection molding machine. This achieves fully automated operation from scattered feeding, orderly diversion, spatial orientation, closed-loop return, to end-position adjustment, improving the production efficiency and posture accuracy of the injection molding machine's front-end material handling. Attached Figure Description

[0017] The accompanying drawings, which are provided to further illustrate the invention and constitute a part of this invention, are illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention.

[0018] In the attached diagram: Figure 1 This is an overall schematic diagram of the lifting device for a lampshade injection molding machine according to the present invention; Figure 2 For the present invention Figure 1 A magnified structural diagram at point A; Figure 3 For the present invention Figure 1 A magnified structural diagram at point B; Figure 4 This is a schematic diagram of the spiral slide of the present invention; Figure 5 For the present invention Figure 4 A magnified structural diagram at point C; Figure 6 For the present invention Figure 4 A schematic diagram of the recycling and feeding component structure in the middle; Figure 7 For the present invention Figure 6 A magnified structural diagram at point D; Figure 8 For the present invention Figure 4 A schematic diagram of a partial structure; Figure 9 For the present invention Figure 8 A magnified structural diagram at point E; Figure label: 1. Lifting assembly; 11. Storage hopper; 12. Elevator main frame; 13. Lifting conveyor belt; 14. Drive motor; 141. Reducer; 15. Drop hopper; 16. Receiving plate; 17. Diverting guide plate; 18. Diverting rod; 2. Recycling feeding assembly; 21. Recycling conveyor; 22. Receiving hopper; 23. Feeding conveyor line; 24. T-shaped pressure plate; 25. Material blocking cylinder; 251. Material blocking rod; 26. Receiving platform; 27. Photoelectric sensor; 3. Spiral slide; 4. End tilting mechanism Components; 41. Support base frame; 42. Tilting motor; 43. Telescopic cylinder; 431. Cylinder piston rod; 44. Tilting base box; 441. Limiting slide groove; 45. Drive rack; 46. Support seat; 47. Rotary gear; 48. Turntable; 49. Crank arm; 410. Clamping rod; 5. Alternating flow diversion assembly; 51. Sector gear; 52. Two-way slide frame; 53. Linear rack; 54. Guide sleeve; 55. Mounting bracket; 56. Slide rail; 57. Swing shaft; 58. Flow diversion baffle. Detailed Implementation

[0019] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0020] The technical solutions provided by the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0021] Example 1: Refer to Figures 1-3 As shown, this embodiment of the invention provides a lifting device for a lampshade injection molding machine, including a lifting component 1, a diversion guide plate 17, and a recycling feeding component 2. This embodiment mainly relies on passive physical constraints for probability screening.

[0022] Specifically, the lifting assembly 1 includes a main frame 12 of the lifting machine. A storage hopper 11 for accommodating scattered lamp covers is connected to the inclined bottom end of the main frame 12. A lifting conveyor belt 13 is arranged around the main frame 12, and several lifting hoppers (not shown in the figure) are evenly distributed on its surface. A drive motor 14 is arranged at the high end of the main frame 12, and a reducer 141 is fixed at the output end of the drive motor 14. The reducer 141 is fixedly installed on the side of the main frame 12. In the working state, the drive motor 14 drives the lifting conveyor belt 13 to continuously circulate through the chain, and uses the lifting hoppers to receive the scattered lamp covers in the storage hopper 11 and continuously transport them obliquely upward, so as to realize the automated supply of initial materials.

[0023] A hopper 15 is provided on the inclined high-end bottom surface of the main frame 12 of the elevator (i.e., directly below the unloading position). When the lamp cover is conveyed to the highest point and tilted into the hopper 15, it falls downwards under the action of gravity. To prevent the falling material from piling up locally, a W-shaped receiving plate 16 is inclinedly provided below the hopper 15. The receiving plate 16 has two unloading ends, and the W-shaped ridge structure can divert the falling lamp cover to the unloading ends on both sides. At the same time, an inclined diversion guide plate 17 is fixed at one end of the receiving plate 16. At one end where the receiving plate 16 and the diversion guide plate 17 are connected, two U-shaped diversion rods 18 are symmetrically fixed. The U-shaped structure is used to physically limit and guide the sliding lamp cover and buffer the downward sliding energy of the lamp cover to ensure the smooth output of the lamp cover.

[0024] To achieve preliminary screening of the lampshade's posture, an inclined diversion guide plate 17 is fixed at one end of the receiving plate 16, and a recycling feeding assembly 2 is connected below the diversion guide plate 17. The recycling feeding assembly 2 includes a feeding unit and a recycling unit. The feeding unit has a feeding conveyor line 23, and a T-shaped pressure plate 24 is fixed directly above the feeding conveyor line 23. The diversion guide plate 17 has a gradually narrowing groove structure that is wider at the top and narrower at the bottom. Its receiving end is wider to receive lampshades with random postures falling from above, and its discharge end gradually narrows to guide the lampshades to be output in a single row. The bottom of the discharge end has an open suspended structure and is precisely connected to the feeding conveyor line 23.

[0025] The diversion guide plate 17, together with the feed conveyor line 23 below and the T-shaped pressure plate 24 above, constitutes the posture-based initial screening structure. Due to the frustum-shaped physical characteristics of the lampshade (large at one end, small at the other, with the center of gravity biased towards the larger end), when the scattered lampshade slides out of the diversion guide plate 17 and enters the parallel conveying area of ​​the feed conveyor line 23, only the lampshade with its large opening facing down and its small opening facing up can have its bottom flange surface smoothly overlap and be supported on the parallel double rails, and under the T-shaped pressure plate 24... Under the upper space limit, it is stably lifted and conveyed downstream. For lampshades that are not in the correct posture, such as lying horizontally, nested head to tail, or with the large opening facing up and the small opening facing down, the contact surface size cannot be simultaneously connected to the feeding conveyor line 23, or they are blocked and interfered with by the top of the T-shaped pressure plate 24, or they become unstable due to the tilt of the center of gravity. When they slide out of the suspended end of the diversion guide plate 17, they will lose physical support and fall from both sides of the diversion guide plate 17. In this way, the initial passive screening based on the geometric contour of the material and gravity is achieved.

[0026] For lamp covers that fall off during the screening process, the incorrectly positioned lamp covers are centrally processed by the recycling unit in the recycling feeding assembly 2. The recycling unit includes a recycling conveyor 21 and a receiving hopper 22. The receiving hopper 22 is fixed on the two side plates of one end of the recycling conveyor 21 and is located directly below the suspended discharge end of the diversion guide plate 17. It is used to collect the fallen and squeezed lamp covers and guide them to the recycling conveyor 21. The other end of the recycling conveyor 21 is erected above the storage hopper 11. Through this structure, the rejected lamp covers are automatically transported back to the storage hopper 11 for secondary lifting, forming a closed-loop material circulation channel.

[0027] Qualified lampshades are conveyed linearly by the feeding unit. A receiving platform 26 is fixed at the discharge end of the feeding conveyor line 23. A baffle on one side of the receiving platform 26 is used to physically limit and prevent the lampshades from falling off. Two photoelectric sensors 27 are arranged side by side on the baffle of the receiving platform 26 to detect in real time whether the lampshades at the end are in place. At the same time, a baffle cylinder 25 is fixed at the discharge end, and a baffle rod 251 is fixed at its telescopic end. Driven by the control system, the baffle cylinder 25 drives the baffle rod 251 to extend and retract according to the signal of the photoelectric sensor 27, performing the limiting and releasing actions to ensure that only two lampshades side by side are released into the receiving platform 26 at a time, thereby controlling the feeding cycle.

[0028] Example 2: Refer to Figures 4-9 As shown, based on Embodiment 1, in order to further improve the accuracy of the material handling posture and realize the active adjustment of the end lampshade posture, this embodiment has optimized and replaced some of the material handling and receiving structures. The main additions are the alternating diversion component 5, the spiral slide 3 and the end flipping component 4. The spiral slide 3 replaces the diversion guide plate 17, and the end flipping component 4 replaces the receiving platform 26.

[0029] Specifically, the alternating flow diversion component 5 is disposed between the hopper 15 and the receiving plate 16 to achieve active alternating flow diversion. The alternating flow diversion component 5 includes a mounting bracket 55, a slide rail 56, a bidirectional slide frame 52, a linear rack 53, and a sector gear 51. The mounting bracket 55 is fixed to the side of the main frame 12 of the elevator, the slide rail 56 is fixed on the mounting bracket 55, the bidirectional slide frame 52 is horizontally slidably disposed on the slide rail 56 by a slider, the upper and lower edges of the inner side of the bidirectional slide frame 52 are respectively provided with linear racks 53, and the sector gear 51 is fixed to the output end of the reducer 141 and located inside the bidirectional slide frame 52.

[0030] The alternating flow diversion assembly 5 also includes a guide sleeve 54, a swing shaft 57, and a flow diversion baffle 58. The guide sleeve 54 is fixedly connected to the bidirectional sliding frame 52. The swing shaft 57 is L-shaped and its vertical end is movably inserted into the guide sleeve 54. The horizontal end of the swing shaft 57 is connected to the inner wall of the discharge hopper 15 by a bearing. The flow diversion baffle 58 is fixed on the horizontal end of the swing shaft 57.

[0031] When the reducer 141 drives the sector gear 51 to rotate in a unidirectional uniform speed, since the sector gear 51 only has tooth blocks on a local circumference, its rotation process will go through the following four stages: When the reducer 141 drives the sector gear 51 to rotate in a unidirectional uniform speed, since the sector gear 51 only has tooth blocks on a local circumference, the sector gear 51 drives the alternating flow splitter 5 through the following four stages during the rotation process: Upper meshing stage: The tooth block of sector gear 51 meshes with the straight rack 53 above the bidirectional slide frame 52. The sector gear 51 drives the bidirectional slide frame 52 to move quickly to one side along the slide rail 56. The guide sleeve 54 moves synchronously with the bidirectional slide frame 52 and actuates the vertical end of the swing shaft 57, causing the swing shaft 57 to deflect and drive the diversion baffle 58 to block one of the discharge ports of the discharge hopper 15.

[0032] First rest phase: The toothed blocks of the sector gear 51 rotate away from the upper linear rack 53 and enter the toothless zone. At this time, the bidirectional slide frame 52 loses the active thrust of the sector gear 51. The bidirectional slide frame 52 uses the friction between itself and the slide rail 56 to remain stationary, thereby keeping the diversion baffle 58 in the current closed position within the set material discharge time, ensuring that the discharge port on this side of the discharge hopper 15 remains completely closed.

[0033] Lower meshing stage: As the sector gear 51 continues to rotate, the tooth block of the sector gear 51 rotates to the bottom and meshes with the straight rack 53 at the bottom. The sector gear 51 drives the bidirectional slide frame 52 to move in the opposite direction along the slide rail 56. The bidirectional slide frame 52 drives the swing shaft 57 to deflect in the opposite direction through the guide sleeve 54.

[0034] Second rest phase: The tooth block of sector gear 51 re-enters the toothless zone and disengages from the straight rack 53 below. The bidirectional slide frame 52 enters a stationary waiting state again at the end of its stroke on the other side of the slide rail 56, causing the diversion baffle 58 to block the other discharge port of the discharge hopper 15.

[0035] Through the meshing sequence between the sector gear 51 with the incomplete gear structure and the bidirectional slide frame 52 with double-sided rack, the alternating diversion component 5 realizes the transformation of the continuous rotation of the drive motor 14 into the intermittent diversion action of the diversion baffle 58, which involves translation, pause, return, and pause, thereby guiding the lamp cover into the receiving plate 16 in an orderly manner.

[0036] To achieve active material orientation, this embodiment utilizes a spiral slide 3 to connect the two unloading ends of the receiving plate 16 with the feeding conveyor line 23. Two spiral slides 3 are symmetrically arranged, and their overall structure extends in a spiral descending manner along the vertical direction of space. The spiral slide 3 has a limiting groove of a specific width (not shown in the figure), and the inner diameter of the limiting groove is adapted to the maximum outer diameter of the lampshade.

[0037] When the randomly positioned lampshade slides from the receiving plate 16 into the spiral chute 3, its orientation principle is as follows: The lampshade has a frustum-shaped geometric characteristic with one end larger than the other and the center of gravity biased towards the larger end. Within the spiral chute 3, the lampshade is guided by both gravity and centripetal force, sliding downwards along the spiral trajectory. Due to the spatial limitations of the chute, the flange surface at the larger end of the lampshade will generate a strong centrifugal tendency during its sliding process, while the rearward bias of the center of gravity causes the lampshade to generate rotational inertia. During this process, the curvature of the spiral chute 3 exerts a forced spatial constraint on the lampshade, forcing lampshades with incorrect postures (such as lying on their side or with the larger end facing down) to automatically roll under the action of centrifugal force. When the lampshade slides to the bottom outlet of the spiral chute 3, its posture has been physically corrected and forcibly constrained to a unified posture with the larger end facing up and the smaller end facing down, thereby ensuring that the material can smoothly slide into the feeding conveyor line 23.

[0038] The end-turning assembly 4 is located at the output end of the feeding conveyor line 23. The end-turning assembly 4 includes a support base 41, a turning base box 44 rotatably connected to the support base 41, and a turning motor 42 fixed to one side of the support base 41 for driving the turning base box 44 to turn as a whole. Two sets of photoelectric sensors 27 for detecting the position of the fed lamp cover are arranged side by side at the feeding end of the turning base box 44. The telescopic cylinder 43 is fixed to the output shaft end of the turning motor 42 by a bracket. The cylinder piston rod 431 of the telescopic cylinder 43 extends into the inner cavity of the turning base box 44 and is rigidly connected to the sliding table (not shown in the figure) in the inner cavity.

[0039] The upper and lower surfaces of the flip base box 44 are symmetrically provided with two displacement units for synchronously centering and clamping the lampshade. Each displacement unit includes a drive rack 45, a support base 46 fixed on the flip base box 44, and a turntable 48 mounted on the side of the support base 46 via a bearing seat. A rotating gear 47 is coaxially fixed on the turntable 48 and meshes with the corresponding drive rack 45. The two drive racks 45 are arranged opposite to each other and are both fixedly connected to a sliding table in the inner cavity. Two crank arms 49 are movably connected at the eccentric position of the turntable 48. The ends of the two crank arms 49 are respectively hinged to clamping rods 410. The bottom of the clamping rods 410 is provided with a slider. The clamping rods 410 are embedded in the limiting grooves 441 opened on the surface of the flip base box 44 through the sliders. The working surface of the clamping rods 410 adopts an inwardly inclined contour design to adapt to the frustum-shaped contour of the lampshade.

[0040] Once the lampshade is in position, the telescopic cylinder 43 drives the piston rod 431 to move the sliding table linearly. Since the two drive racks 45 move synchronously with the sliding table, they drive the corresponding two rotating gears 47 to rotate synchronously. The two rotating gears 47 then drive the corresponding two turntables 48 to rotate. The turntables 48, through two eccentrically connected crank arms 49, convert the circular motion into the linear reciprocating motion of the clamping rods 410 along the limiting slide groove 441. This mechanism uses the telescopic cylinder 43 as a single power source and the consistency of the transmission of the two drive racks 45 ensures that the four clamping rods 410 can synchronously tighten towards the center of the flip base box 44 or open outwards, achieving the positioning and stable clamping of the lampshade. After the clamping action is completed, the flip motor 42 starts and drives the flip base box 44, the telescopic cylinder 43, and the clamped lampshade to rotate 180 degrees to complete the attitude switch.

[0041] Working principle: During equipment operation, the drive motor 14 drives the sector gear 51 to rotate unidirectionally at a constant speed through the reducer 141. Since the sector gear 51 only has toothed blocks on a local circumference, when the toothed blocks rotate to the top and mesh with the linear rack 53 on the upper part of the bidirectional slide frame 52, the bidirectional slide frame 52 is driven to move rapidly to one side along the slide rail 56. The guide sleeve 54 moves accordingly and actuates the vertical end of the swing shaft 57, causing the diversion baffle 58 to deflect and block one discharge port of the hopper 15. As the sector gear 51 continues to rotate, the toothed blocks rotate away from the upper rack and enter the toothless zone. At this time, the bidirectional slide frame 52 loses its active thrust and utilizes its interaction with the slide rail 56. The friction limiter keeps the station stationary, so that the diversion baffle 58 remains at the station for the set material dropping time, ensuring that the material discharge port on this side is completely closed until the material has dropped completely; then the toothed block rotates to the bottom and meshes with the bottom linear rack 53, driving the bidirectional slide frame 52 to move in the opposite direction and drive the diversion baffle 58 to switch to the other side discharge port, and then remains stationary again in the subsequent second rest phase; through the above-mentioned meshing sequence of the incomplete gear and the double-sided rack frame, the continuous rotation of the motor is converted into the intermittent opening and closing action of the diversion baffle 58, thereby orderly and alternately diverting the light cover of the lifting component 1 into the discharge hopper 15 to the receiving plates 16 on both sides.

[0042] After being diverted, the lampshade slides from the receiving plate 16 into the spiral slide 3. Utilizing the frustum-shaped geometric characteristics of the lampshade, which is large at one end and small at the other with its center of gravity biased towards the large end, the lampshade slides downward along the spiral trajectory under the dual guidance of gravity and centripetal force. Due to the spatial limitation of the internal groove of the spiral slide 3, the flange surface of the large end of the lampshade generates a strong centrifugal tendency during the sliding process. The physical characteristic of the center of gravity being biased to the rear causes the lampshade to generate rotational inertia. At this time, the spiral curvature of the spiral slide 3 exerts a forced spatial constraint on the lampshade, forcing lampshades with incorrect postures to automatically roll and adjust under the action of centrifugal force. When the lampshade slides to the bottom outlet of the spiral slide 3, its physical posture has been forcibly corrected and constrained to a unified state with the large end facing up and the small end facing down, thereby ensuring that all lampshades can slide smoothly and with consistent posture onto the feeding conveyor line 23, and be stably conveyed to the end flipping assembly 4 under the constraint and limitation of the T-shaped pressure plate 24.

[0043] When the lamp cover is delivered to the output end of the feeding conveyor line 23 and detected by the photoelectric sensor 27, the telescopic cylinder 43 is activated and drives the cylinder piston rod 431 to move the sliding table along a linear displacement. As the two drive racks 45 move synchronously with the sliding table, they drive the corresponding two rotating gears 47 and the coaxial turntable 48 to rotate synchronously. The turntable 48 converts the circular motion into the radial linear motion of the clamping rod 410 along the limiting groove 441 through the crank arm 49 connected to its eccentric position. By utilizing the consistency of the transmission of the two drive racks 45, it is ensured that the four clamping rods 410 distributed on the upper and lower surfaces of the flipping base box 44 can be tightened towards the center synchronously, thereby performing precise centering and stable clamping of the lampshade. After the clamping action is completed, the flipping motor 42 starts and drives the flipping base box 44, the telescopic cylinder 43 and the clamped lampshade to rotate 180 degrees in space, adjusting the lampshade's posture from the large opening facing up to the large opening facing down, so that the downstream injection molding machine robot can directly perform the gripping action from below the flipping base box 44. Thus, the entire closed-loop control from active material diversion and trajectory orientation correction to end-machine synchronous flipping is completed.

[0044] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A lifting device for a lampshade injection molding machine, characterized in that, include The lifting component (1) has a storage hopper (11) at the bottom and a discharge end at the top, which is used to continuously lift the lampshade in the storage hopper (11) upwards and pour it out from the discharge end. An alternating flow diversion component (5) is provided at the unloading end of the lifting component (1) for alternating flow diversion of the falling lampshade to the left and right. Spiral slides (3) are connected in pairs below the alternating diversion components (5) and extend in a spiral descending manner along the vertical direction of space to form the bottom end, which is used to physically constrain the lampshade after diversion, so as to unify the lampshade's large end facing up and small end facing down. The recycling feeding assembly (2) is connected to the bottom end of the spiral slide (3). It includes a feeding unit and a recycling unit. The feeding unit forms an output end on the side away from the spiral slide (3). The feeding unit is used to receive the oriented lampshade and convey it to the output end in a straight line. The recycling unit is used to collect the squeezed and slipped lampshade and return it to the lifting assembly (1). The end flipping component (4) is located at the output end of the recycling feeding component (2) and is used to receive the directional conveyed lampshade and flip the lampshade to the correct posture for subsequent grabbing.

2. The lifting device for a lampshade injection molding machine according to claim 1, characterized in that, The alternating flow splitting assembly (5) includes a mounting bracket (55), a slide rail (56), a bidirectional slide frame (52), two linear racks (53), a reducer (141), and a sector gear (51). The mounting bracket (55) is fixed to the top of the lifting assembly (1). The slide rail (56) is mounted on the mounting bracket (55). The bidirectional slide frame (52) is horizontally slidably mounted on the slide rail (56). The two linear racks (53) are respectively mounted on the upper and lower edges of the inner side of the bidirectional slide frame (52). The sector gear (51) is fixed to the output end of the reducer (141) and located inside the bidirectional slide frame (52). It is used to alternately mesh with the linear racks (53) on the upper and lower sides when the sector gear (51) rotates continuously in one direction, so as to drive the bidirectional slide frame (52) to perform intermittent reciprocating translation.

3. The lifting device for a lampshade injection molding machine according to claim 2, characterized in that, The alternating flow diversion assembly (5) also includes a guide sleeve (54), a swing shaft (57), and a flow diversion baffle (58). The guide sleeve (54) is fixedly connected to the bidirectional sliding frame (52). The swing shaft (57) is L-shaped and its vertical end is movably inserted into the guide sleeve (54). The horizontal end of the swing shaft (57) is connected to the inner wall of the discharge hopper (15) provided at the discharge end of the lifting assembly (1). The flow diversion baffle (58) is fixed on the horizontal end of the swing shaft (57) and is used to cause the swing shaft (57) to deflect under the translation and pulling of the bidirectional sliding frame (52), thereby driving the flow diversion baffle (58) to alternately open and close the two discharge ports at the bottom of the discharge hopper (15).

4. The lifting device for a lampshade injection molding machine according to claim 3, characterized in that, The lifting assembly (1) also includes a receiving plate (16) and two diverting rods (18). The receiving plate (16) is W-shaped and inclinedly arranged below the hopper (15), and has two discharge ends. The two diverting rods (18) are U-shaped and symmetrically fixed at the junction of the receiving plate (16) and the spiral slide (3) below, for physically guiding the lampshade falling from the hopper (15).

5. The lifting device for a lampshade injection molding machine according to claim 1, characterized in that, The spiral slide (3) has a limiting groove of a specific width inside, which is used to automatically roll and adjust the lampshade under the dual guidance of gravity and centripetal force when the lampshade falls into the spiral slide (3) with a random posture. When it reaches the bottom end, it is forcibly constrained to the posture with the large end facing up and the small end facing down.

6. The lifting device for a lampshade injection molding machine according to claim 1, characterized in that, The feeding unit includes a feeding conveyor line (23), a T-shaped pressure plate (24), a baffle cylinder (25), and a baffle rod (251). The feeding end of the feeding conveyor line (23) is respectively connected to the bottom end of the paired spiral slide (3). The T-shaped pressure plate (24) is fixed above the feeding conveyor line (23) to separate its feeding end. The baffle cylinder (25) is fixed at the output end of the feeding conveyor line (23). The baffle rod (251) is fixed on the telescopic end of the baffle cylinder (25). The T-shaped pressure plate (24) is used to prevent the lampshade from jumping out during conveying. The baffle cylinder (25) is used to limit the passage of only two lampshades side by side at a time by telescopic extension.

7. The lifting device for a lampshade injection molding machine according to claim 1, characterized in that, The recycling unit includes a recycling conveyor (21) and a receiving hopper (22). The receiving hopper (22) is fixed on the two side plates of one end of the recycling conveyor (21) and located directly below the spiral slide (3). The other end of the recycling conveyor (21) is mounted above the storage hopper (11). The receiving hopper (22) is used to collect the misaligned lampshades that have been squeezed off. The recycling conveyor (21) is used to return the collected lampshades to the lifting assembly (1).

8. The lifting device for a lampshade injection molding machine according to claim 1, characterized in that, The end-flipping assembly (4) includes a support base (41), a flipping base box (44), photoelectric sensors (27), a flipping motor (42), a telescopic cylinder (43), and a sliding table. The flipping base box (44) is rotatably mounted on the support base (41). Two photoelectric sensors (27) are arranged side by side at the feeding end of the flipping base box (44). The flipping motor (42) is fixed on the support base (41) and is connected to the flipping base box (44) for transmission. The telescopic cylinder (43) is fixed at the output end of the flipping motor (42). The piston rod (431) of the telescopic cylinder (43) extends into the interior of the flipping base box (44) and is fixed to the sliding table. The two photoelectric sensors (27) are used to detect whether the conveyed lampshade is in place. The flipping motor (42) is used to drive the flipping base box (44) to flip 180 degrees. The telescopic cylinder (43) is used to provide linear driving force for subsequent lampshade clamping.

9. The lifting device for a lampshade injection molding machine according to claim 8, characterized in that, The upper and lower surfaces of the flip base box (44) are respectively provided with a displacement unit. Each displacement unit includes a drive rack (45), a support base (46), a turntable (48), a rotating gear (47), two crank arms (49), and two clamping rods (410). The support base (46) is fixed on the flip base box (44), the turntable (48) is rotatably mounted on the support base (46), the rotating gear (47) is fixedly sleeved on the turntable (48), and the two drive racks (45) are respectively fixed. The two crank arms (49) are fixed on the upper and lower surfaces of the sliding table and respectively mesh with the corresponding rotating gears (47). One end of each crank arm (49) is movably connected to the eccentric part of the turntable (48), and the other end is respectively hinged to the corresponding clamping rod (410). One end of the clamping rod (410) is slidably disposed in the limiting groove (441) opened on the upper surface of the flip base box (44), which is used to convert the linear displacement of the drive rack (45) into the synchronous opposite clamping or opposite releasing action of the two clamping rods (410).

10. The lifting device for a lampshade injection molding machine according to claim 1, characterized in that, The lifting assembly (1) also includes a main frame (12) of the lifting machine, a lifting conveyor belt (13) and a drive motor (14). The storage hopper (11) is connected to the inclined bottom end of the main frame (12) of the lifting machine. The lifting conveyor belt (13) is arranged around the main frame (12) of the lifting machine and has several lifting hoppers on its surface. The drive motor (14) is located at the top of the main frame (12) of the lifting machine. The drive motor (14) is used to drive the lifting conveyor belt (13) to rotate in a cycle through a chain to realize the continuous lifting of the lampshade.

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