Feeding device for aspheric surface forming machine

Abstract

The utility model relates to a feeding device for an aspheric surface forming machine, which comprises a working table, the working table is provided with a conveying assembly used for conveying glass preforms towards the same direction, one side of the conveying assembly is provided with a lifting assembly used for receiving the glass preforms of the conveying assembly, and the glass preforms are sequentially lifted to a feeding station. The workbench is provided with a grabbing assembly capable of moving a glass preform on the feeding station to the molding station of the molding machine. According to the feeding device, through cooperative work of the conveying assembly, the lifting assembly and the grabbing assembly, automatic transfer of a glass preform from conveying to a mold pressing station of a forming machine is achieved; when the grabbing assembly grabs the glass preforms to the mold pressing station, new glass preforms can be continuously placed on the conveying assembly so as to supplement the new glass preforms; and the descending distances of the grabbing assembly for grabbing the glass preforms every time are the same, so that errors can be reduced, and the situation that grabbing of the glass preforms is unstable is avoided.

Description

Technical Field

[0001] This utility model relates to the field of optical lens production equipment technology, and more specifically, to a feeding device for an aspherical forming machine. Background Technology

[0002] In the manufacture of optical glass lenses, a molding process is usually used to form an optical glass lens from a glass preform. Specifically, the glass preform is placed in a hot press mold, and the hot press mold is heated and pressurized by a hot press device to deform the glass preform and form an optical glass lens with two aspherical surfaces.

[0003] Currently, in order to automate lens manufacturing, some manufacturers use loading and unloading robots to load glass preforms and unload optical glass lenses, in conjunction with hot pressing equipment to complete the hot pressing process.

[0004] Chinese patent CN220034320U discloses a loading and unloading robot for molded lenses. The disclosed structure has a lens robot arm and a pre-shaped body robot arm, both of which include material suction nozzles that can move in the vertical and radial directions to pick up the molded lens to the lens carrier and pick up the glass pre-shaped body in the pre-shaped body carrier to the molding station.

[0005] However, as shown in the attached diagram, in this design, the glass preforms in the preform carrier can only be stacked. Furthermore, the robotic arm is positioned above the preform carrier during operation, making it inconvenient for workers to place glass preforms onto it. If a glass preform needs to be placed, the robotic arm's rotation must be stopped, making it impossible to continuously replenish the glass preforms in the carrier while loading. In addition, the stacked arrangement of the glass preforms causes the robotic arm to descend differently each time it picks up a glass preform, easily leading to errors and unstable glass preform picking. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a feeding device for an aspherical forming machine, which addresses the above-mentioned deficiencies of the prior art.

[0007] The technical solution adopted by this utility model to solve its technical problem is:

[0008] A feeding device for an aspherical forming machine is constructed, including a worktable. The worktable is provided with a transmission component for transmitting glass preforms in the same direction. A lifting component is provided on one side of the transmission component to receive the glass preforms from the transmission component and lift them sequentially to the feeding station. The worktable is provided with a gripping component that can move the glass preforms from the feeding station to the molding station of the forming machine.

[0009] As an improvement to the feeding device, the transmission assembly includes at least two transmission wheels, both of which are rotatably mounted on the worktable. A transmission belt for transmitting the glass preform is wound between the transmission wheels, and a drive motor is connected to one side of the transmission.

[0010] As an improvement to the feeding device, the lifting assembly includes a bracket with pulleys mounted on both the top and bottom. A transmission belt is wound between the pulleys, and multiple material support frames are evenly spaced around the outer periphery of the transmission belt. One pulley is connected to a first motor to drive the transmission belt to operate, thereby moving the material support frame to the feeding station after it is aligned with the transmission belt.

[0011] As an improvement to the feeding device, baffles are provided on opposite sides of the conveyor belt along the length direction to limit the position of the glass preform on the conveyor belt.

[0012] As an improvement to the feeding device, the gripping assembly includes a rotating member and a radial driver disposed on the rotating member. The radial driver is provided with a connecting seat to connect to a lifter. The lifter is provided with a mounting plate to mount a suction cup for picking up and fixing the glass preform.

[0013] As an improvement to the feeding device, the rotating component includes a rotating base rotatably mounted on the worktable, the rotating base being connected to a second motor to drive the rotating base to operate intermittently.

[0014] As an improvement to the feeding device, a positioning component is also provided on the worktable, the positioning component being close to the lifting component to push the glass preform at the feeding station to be centered.

[0015] As an improvement to the feeding device, the positioning assembly includes a mounting bracket and a linear driver mounted on the mounting bracket. The linear driver has a connecting shaft to connect a positioning plate, the positioning plate having an arcuate surface that matches the shape of the glass preform to push the glass preform to be centered.

[0016] As an improvement to the feeding device, the connecting shaft includes a first shaft body, one end of which has a radial groove, and a second shaft body for connecting the positioning plate is slidably connected to the groove, with an elastic element provided between the second shaft body and the groove.

[0017] As an improvement to the feeding device, the positioning plate is provided with a support portion, which is used to move with the positioning plate and abut against and support the bottom of the material support frame at the feeding station.

[0018] The beneficial effects of this utility model are as follows: This feeding device achieves automated transfer of glass preforms from the conveyor to the molding station of the forming machine through the coordinated work of the conveying component, the lifting component, and the gripping component; while the gripping component grips the glass preforms to the molding station, the operator can continuously place new glass preforms on the conveying component to replenish them; in addition, the glass preforms are all lifted to the designated feeding station by the lifting component, so that the gripping component lowers the glass preforms by the same distance each time, reducing errors and avoiding unstable gripping of the glass preforms. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is one of the three-dimensional structural schematic diagrams of this utility model;

[0021] Figure 2 This is the second three-dimensional structural schematic diagram of this utility model;

[0022] Figure 3 This is a top view of the present invention;

[0023] Figure 4 This is a side view of a portion of the structure of this utility model;

[0024] Figure 5 This is a three-dimensional structural diagram of the lifting component of this utility model;

[0025] Figure 6 This is one of the structural schematic diagrams of the gripping component of this utility model;

[0026] Figure 7 This is the second structural schematic diagram of the gripping component of this utility model;

[0027] Figure 8 This is a top view of the positioning component of this utility model;

[0028] Figure 9 This is a cross-sectional view of the positioning component of this utility model.

[0029] In the diagram: 1. Workbench; 2. Transmission assembly; 21. Transmission wheel; 22. Transmission belt; 23. Drive motor; 24. Baffle; 3. Lifting assembly; 31. Bracket; 32. Wrapper wheel; 33. Transmission belt; 34. Material support frame; 35. First motor; 4. Gripping assembly; 41. Rotating component; 411. Rotating seat; 412. Second motor; 42. Radial driver; 43. Connecting seat; 44. Lifter; 45. Mounting plate; 46. Suction cup; 5. Positioning assembly; 51. Mounting frame; 52. Linear driver; 53. Connecting shaft; 531. First shaft; 532. Slide groove; 533. Second shaft; 534. Elastic component; 54. Positioning plate; 541. Arc-shaped surface; 542. Support part; 6. Feeding station; 7. Molding station. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of this utility model. Obviously, the described embodiments are some, but not all, embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0031] like Figure 1 , Figure 2 and Figure 3 As shown, a feeding device for an aspherical forming machine includes a worktable 1. The worktable 1 is provided with a transmission component 2 for transmitting glass preforms in the same direction. A lifting component 3 is provided on one side of the transmission component 2 to receive the glass preforms from the transmission component 2 and lift them sequentially to the feeding station 6. The worktable 1 is provided with a gripping component 4 that can move the glass preforms from the feeding station 6 to the molding station 7 of the forming machine.

[0032] Specifically, the feeding station 6 is located at the top of the lifting assembly 3; the molding station 7 is located inside the cavity of the hot press mold. First, the glass preforms can be continuously and in the same direction through the transmission assembly 2 on the worktable 1. When the glass preforms reach the end of the transmission assembly 2, the lifting assembly 3 starts to work, receiving the glass preforms from the transmission assembly 2 and lifting them sequentially to the feeding station 6. Finally, when the glass preforms are located at the feeding station 6, the gripping assembly 4 starts to work, transferring the glass preforms from the feeding station 6 to the molding station 7 of the molding machine.

[0033] This feeding device achieves automated transfer of glass preforms from the conveyor to the molding station 7 of the molding machine through the coordinated operation of the conveyor component 2, the lifting component 3, and the gripping component 4. While the gripping component 4 grips the glass preforms to the molding station 7, the operator can continuously place new glass preforms onto the conveyor component 2 to replenish them. In addition, the glass preforms are all lifted to the designated feeding station 6 by the lifting component 3, so that the gripping component 4 descends the same distance each time it grips the glass preform, reducing errors and avoiding unstable gripping of the glass preforms.

[0034] In some embodiments of this application, the transmission assembly 2 includes two transmission wheels 21, both rotatably mounted on the workbench 1. A transmission belt 22 for transmitting glass preforms is wound between the transmission wheels 21. A drive motor 23 is connected to one side of the transmission assembly 22 to drive the transmission belt 22 to operate intermittently. Specifically, when the drive motor 23 drives the transmission wheels 21 to rotate, it will drive the transmission belt 22 to move together. Since the glass preforms are placed on the transmission belt 22, the glass preforms will be transmitted accordingly as the transmission belt 22 moves. Workers can continuously place new glass preforms onto the transmission assembly 2 without stopping the operation of the gripping assembly 4, thereby achieving continuous transmission of glass preforms, improving production efficiency, and reducing waiting time.

[0035] In some embodiments of the present application, Figure 4 and Figure 5 As shown, the lifting assembly 3 includes a bracket 31, with pulleys 32 mounted on both the top and bottom of the bracket 31. A transmission belt 33 is wound between the pulleys 32. Multiple material support frames 34 are evenly spaced around the outer periphery of the transmission belt 33. One pulley 32 is connected to a first motor 35 to drive the transmission belt 33 to operate, thereby moving the material support frame 34 to the feeding station 6 after aligning with the transmission belt 22.

[0036] Specifically, the feeding station 6 consists of the uppermost material support frame 34 on the side of the support 31 closest to the transmission component 2; multiple material support frames 34 are evenly spaced around the outer periphery of the transmission belt 33 for carrying and moving materials; a pulley 32 on one side is connected to a first motor 35, which drives the transmission belt 33 to operate; the operation of the transmission belt 33 moves the material support frames 34, aligning them with the transmission belt 22 before moving them to the feeding station 6. When the first motor 35 starts, it drives the pulley 32 connected to it to rotate. The rotation of the pulley 32 causes the transmission belt 33 to circulate between the upper and lower pulleys 32 on the support 31. As the transmission belt 33 moves, the material support frames 34 fixed to the outer periphery of the transmission belt 33 also move. During the movement, the material support frames 34 align with the transmission belt 22, thereby moving the material from one location to the feeding station 6. Through motor drive, automated material handling is achieved, reducing the need for manual operation. The alignment design between the material support frame 34 and the conveyor belt 22 ensures that the material can move accurately and stably to the feeding station 6.

[0037] The number of material racks 34 can be set according to requirements, specifically 2, 3, 4, 5, 6, 7, 8, 9 or 10.

[0038] In some embodiments of this application, baffles 24 are provided on opposite sides of the conveyor belt 22 along its length to limit the position of the glass preform on the conveyor belt 22. By providing baffles 24 on both sides of the conveyor belt 22, the glass preform on the conveyor belt 22 is limited to prevent it from shifting during transmission, thus ensuring a stable transmission effect for the glass preform.

[0039] In some embodiments of the present application, Figure 6 and Figure 7 As shown, the gripping assembly 4 includes a rotating member 41 and a radial driver 42 disposed on the rotating member 41. The radial driver 42 is provided with a connecting seat 43 to connect to a lifter 44. The lifter 44 is provided with a mounting plate 45 to mount a suction cup 46 for gripping and fixing a glass preform.

[0040] Specifically, the rotation drive of the rotating component 41 can switch the suction cup 46 between the feeding station 6 and the molding station 7; the radial drive 42 and the lifting device 44 can drive the suction cup 46 to move radially and lift, so as to adjust the position of the suction cup 46 to pick up and place the glass preform.

[0041] The gripping assembly 4 is in standby mode, with the rotating component 41, radial driver 42, and lifting device 44 all stationary. When a glass preform needs to be gripped, the rotating component 41 and radial driver 42 are driven to move the suction cup 46 to the feeding station 6. Then, the lifting device 44 descends, causing the suction cup 46 to fit tightly against the surface of the glass preform and generating negative pressure to suck it up and fix it. After sucking up and fixing the glass preform, the gripping assembly 4 can flexibly adjust its position in the horizontal direction through the coordinated work of the rotating component 41 and radial driver 42, moving it to the molding station 7. The lifting device 44 drives the suction cup 46 to rise and fall, placing the glass preform in the designated position. After placement, the negative pressure on the suction cup 46 is released, thus placing the glass preform smoothly in the target position. This automated gripping and placement process greatly improves production efficiency. Through the coordinated work of the rotating component 41 and radial driver 42, the gripping assembly 4 can flexibly adjust its position in the horizontal direction to accommodate glass preforms of different sizes and shapes. The lifting device 44 can precisely control the height of the suction cup 46, thereby achieving precise gripping and placement of the glass preform. The suction cup 46 generates negative pressure to pick up and fix the glass preform, ensuring its stability during gripping and placement.

[0042] It should be noted that the radial actuator 42, the lifting device 44, and the linear actuator 52 can all be cylinders or electric push rods; and Figure 1 This is a schematic diagram of the suction cup 46 located at the molding station; Figure 2 This is a schematic diagram of the suction cup 46 located at the feeding station.

[0043] In some embodiments of this application, the rotating component 41 includes a rotating seat 411 rotatably mounted on the worktable 1. The rotating seat 411 is connected to a second motor 412 to drive the rotating seat 411 to operate intermittently. Specifically, a radial driver 42 is mounted on the rotating seat 411, which is mounted on the worktable 1 via bearings. To switch the suction cup 46 between the feeding station 6 and the molding station 7, the second motor 412 is controlled to operate intermittently, causing the rotating seat 411 to rotate intermittently. This, in turn, drives the suction cup 46 to rotate around the rotating seat 411, thus achieving the purpose of switching between the feeding station 6 and the molding station 7.

[0044] In some embodiments of this application, a positioning component 5 is also included, which is located near the lifting component 3 to push the glass preform at the feeding station 6 for center positioning. Specifically, after the glass preform is moved to the feeding station 6 by the lifting component 3, the positioning component 5 starts to work. Its mechanical structure contacts the edge or a specific position of the glass preform and pushes the glass preform to move under the action of the driving component. Through precise control and adjustment, the positioning component 5 can move the glass preform to the center position of the feeding station 6 to achieve center positioning.

[0045] In some embodiments of the present application, Figure 8 and Figure 9 As shown, the positioning assembly 5 includes a mounting bracket 51 and a linear actuator 52 mounted on the mounting bracket 51. The linear actuator 52 is provided with a connecting shaft 53 to connect a positioning plate 54. The positioning plate 54 has an arcuate surface 541 that matches the shape of the glass preform to push the glass preform into a centered position. Specifically, the linear actuator 52 is used to push the positioning plate 54 to make linear movements. When the glass preform is lifted onto the feeding station 6, the linear actuator 52 starts to work, generating linear movement and transmitting power to the positioning plate 54 through the connecting shaft 53. Under the push of the linear actuator 52, the positioning plate 54 contacts the glass preform using its arcuate surface 541 and generates thrust. Since the arcuate surface 541 of the positioning plate 54 matches the shape of the glass preform, it can accurately push the glass preform to the center position. After a period of pushing, the glass preform is centered and positioned on the feeding station 6. To achieve the purpose of accurately pushing the glass preform to be centered and positioned, so that the gripping component 4 can accurately pick up the glass preform and place it in the molding station 7.

[0046] In some embodiments of this application, the connecting shaft 53 includes a first shaft body 531, one end of which has a radially formed groove 532. A second shaft body 533 for connecting the positioning plate 54 is slidably connected to the groove 532. An elastic element 534 is provided between the second shaft body 533 and the groove 532. Specifically, the elastic element 534 is a buffer spring. During the positioning of the glass preform at the feeding station 6, due to the presence of the elastic element 534, when the positioning plate 54 encounters excessive resistance or impact, the elastic element 534 can undergo elastic deformation, absorbing part of the impact energy, thereby playing a buffering role. The buffering effect helps reduce direct collisions between the positioning plate 54 and the glass preform, protecting the glass preform from damage, and also helps improve positioning accuracy and stability.

[0047] In some embodiments of this application, the positioning plate 54 is provided with a support portion 542, which moves with the positioning plate 54 and abuts against the bottom of the material carrier 34 of the feeding station 6 for support. Specifically, when the positioning plate 54 moves under the push of the linear actuator 52, the support portion 542 moves accordingly. When the positioning plate 54 moves to the designated position, that is, after the glass preform is centered, the support portion 542 abuts against the bottom of the material carrier 34 of the feeding station 6. The abutment between the support portion 542 and the bottom of the material carrier 34 provides support, ensuring the stability of the positioning plate 54 during the positioning process and during the process of the gripping component 4 picking up and fixing the glass preform.

[0048] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A feeding device for an aspherical forming machine, characterized in that, The device includes a worktable, which is equipped with a transmission component for transmitting glass preforms in the same direction. A lifting component is provided on one side of the transmission component to receive the glass preforms from the transmission component and lift them sequentially to the feeding station. The worktable is also equipped with a gripping component that can move the glass preforms from the feeding station to the molding station of the molding machine.

2. The feeding device according to claim 1, characterized in that, The transmission assembly includes at least two transmission wheels, both of which are rotatably mounted on the worktable. A transmission belt for transmitting the glass preform is wound between the transmission wheels, and a drive motor is connected to one side of the transmission assembly.

3. The feeding device according to claim 2, characterized in that, The lifting assembly includes a bracket with pulleys mounted on both the top and bottom. A transmission belt is wound between the pulleys, and multiple material support frames are evenly spaced around the outer periphery of the transmission belt. One pulley is connected to a first motor to drive the transmission belt and move the material support frame to the feeding station after it is aligned with the transmission belt.

4. The feeding device according to claim 3, characterized in that, Baffles are provided on opposite sides of the conveyor belt along its length to restrict the position of the glass preform on the conveyor belt.

5. The feeding device according to claim 3, characterized in that, The gripping assembly includes a rotating component and a radial driver disposed on the rotating component. The radial driver is provided with a connecting seat to connect to a lifter. The lifter is provided with a mounting plate to mount a suction cup for picking up and fixing the glass preform.

6. The feeding device according to claim 5, characterized in that, The rotating component includes a rotating base rotatably mounted on the worktable, the rotating base being connected to a second motor to drive the rotating base to operate intermittently.

7. The feeding device according to any one of claims 3-6, characterized in that, It also includes a positioning component disposed on the worktable, the positioning component being close to the lifting component to push the glass preform at the feeding station to be centered.

8. The feeding device according to claim 7, characterized in that, The positioning assembly includes a mounting bracket and a linear driver mounted on the mounting bracket. The linear driver has a connecting shaft to connect a positioning plate. The positioning plate has an arcuate surface that matches the shape of the glass preform to push the glass preform into a centered position.

9. The feeding device according to claim 8, characterized in that, The connecting shaft includes a first shaft body, one end of which has a radial groove. A second shaft body for connecting the positioning plate is slidably connected to the groove, and an elastic element is provided between the second shaft body and the groove.

10. The feeding device according to claim 8, characterized in that, The positioning plate is provided with a support part, which is used to move with the positioning plate and abut against the bottom of the material support frame of the feeding station for support.

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