Automatic discharging mechanism of spectacle lens production line

Abstract

The utility model discloses an automatic discharging mechanism of a spectacle lens production line, the production line is provided with a main conveyor belt for communicating a plurality of production devices, the automatic discharging mechanism is arranged on one side of the tail end of the main conveyor belt and is connected with the main conveyor belt, and the automatic discharging mechanism comprises a transfer conveyor belt for transferring a lens frame on the main conveyor belt; and the driving mechanism is used for overlapping and stacking the lens frames on the transfer conveyor belt. The driving mechanism comprises a clamping air cylinder and a lifting air cylinder which are symmetrically arranged on the two sides of the lens frames, and a stacking mechanism used for stacking the lens frames is further arranged on the lifting air cylinder. The automatic discharging mechanism is arranged at the tail end of the main conveying belt, lens frames on the main conveying belt can be switched over, the lens frames can be stacked after switching over, the problem that at present, the number of stacked lens frames is still limited by a discharging roller is solved, the automation of lens production is further improved, and the production cost of lenses is further reduced.

Description

Technical Field

[0001] The present application relates to the technical field of continuous production and processing of lenses, and in particular to an automatic discharging mechanism of a lens production line. Background Art

[0002] The spectacle lens production line is a complete set of equipment and process flow specially used for manufacturing spectacle lenses. The production line covers multiple links from raw material processing to final product inspection to ensure the quality and production efficiency of spectacle lenses. The production line usually consists of raw material preparation area, lens molding area, lens coating area, quality inspection area, packaging and shipping area, etc. The specific production process includes raw material inspection, lens molding, lens processing, lens coating, quality inspection, packaging and shipping, etc.

[0003] At present, in the entire lens processing process, in order to improve processing efficiency and ensure processing quality, a conveyor belt is usually used to connect the equipment used for sequential processing of the lens frame where the lens is placed. That is, after a single process is completed, it can be transferred to the next processing equipment through a conveyor belt for continuous processing. On the basis of improving the lens processing efficiency, it greatly reduces the manual operation cost and can effectively guarantee the lens processing quality.

[0004] At present, after the lens is processed by multiple processing equipments, it is conveyed to the end of the conveyor belt. It is usually necessary to manually remove the lens frame from the conveyor belt to prevent the lens frame from falling directly and causing damage to the lens. In order to avoid untimely manual tilting of the frame, a discharge roller is usually set at the end of the conveyor belt, and the lens frame on the conveyor belt can be transferred to the discharge roller (see the attached manual). Figure 1 As shown in the figure, the lens frames slide down the inclined surface of the discharge roller and accumulate, which can effectively avoid the problem of lens frames and lenses falling directly due to untimely manual unloading. However, when the lens frames are not removed from the discharge roller in time, they will still accumulate on the discharge roller, and then continue to accumulate on the conveyor belt. The continuous operation of the conveyor belt will cause the lens frames to squeeze each other and fall. Therefore, the length of the discharge roller needs to be further lengthened to solve the problem. Unilaterally lengthening the discharge roller still has certain limitations and will occupy a larger indoor space. Summary of the invention

[0005] In response to the above-mentioned problems, the present application aims to provide an automatic discharging mechanism for an eyeglass lens production line, which can transfer and stack the lens frames on the main conveyor belt, solve the problem that the current unloading roller is still limited in the number of lens frames that can be stacked, and further improve the automation of lens production.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted in the present application is as follows: an automatic unloading mechanism of an eyeglass lens production line, the production line has a main conveyor belt connecting multiple production equipment, and is characterized in that: the automatic unloading mechanism is arranged on one side of the tail end of the main conveyor belt and connected to the main conveyor belt, and the automatic unloading mechanism includes a transfer conveyor belt for transferring the lens frames on the main conveyor belt, and a driving mechanism for stacking the lens frames on the transfer conveyor belt.

[0007] Preferably, the driving mechanism includes clamping cylinders symmetrically arranged on both sides of the lens frame connected to the transfer conveyor belt, and a lifting cylinder for separating the lens frame from the transfer conveyor belt is arranged on the top side of each clamping cylinder, and a stacking mechanism for stacking the lens frames is also arranged on the lifting cylinder.

[0008] Preferably, the folding mechanism comprises a horizontal slide rail which drives the lifting cylinder to move horizontally and is offset from the transfer conveyor belt, and vertical slide rails are vertically slidably connected to both ends of the horizontal slide rail.

[0009] Preferably, a stacking conveyor belt for placing a plurality of stacked lens frames at intervals is also provided on the bottom side of the vertical slide rail.

[0010] The beneficial effect of the present application is that the automatic discharging mechanism is arranged at the tail end of the main conveyor belt, and can realize the transfer of the lens frames on the main conveyor belt. After the transfer, the lens frames can also be stacked and piled up, thereby solving the problem that the current unloading roller is still limited in the number of stacked lens frames, further improving the automation of lens production and reducing the production cost of lenses. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a diagram showing the discharging of materials currently achieved by setting a discharging roller at the tail end of the main conveyor belt.

[0012] Figure 2 This is a diagram of the automatic discharging mechanism provided at the tail end of the main conveyor belt for this application.

[0013] Figure 3 For this application Figure 2 Enlarged view of the structure at point A in the middle.

[0014] Figure 4 For this application, the transfer conveyor belt is used to transfer the lens frame on the main conveyor belt as shown in the diagram.

[0015] Figure 5 For this application Figure 4 After the transfer, the lens frame is clamped and ready to be released from the transfer conveyor belt.

[0016] Figure 6 For this application, Figure 5 Illustration of the misalignment between the lens frame and the transfer conveyor belt after transfer.

[0017] Figure 7 For this application Figure 6 The lens frames are then stacked on a stacking conveyor belt as shown.

[0018] Figure 8 This is a diagram showing a large number of lens frames piled up on a stacking conveyor belt according to the present application.

[0019] Fig. 9 This is a diagram showing a plurality of lens frames piled up on a stacking conveyor belt according to the present application.

[0020] In the figure: 31- clamping plate; 8- lens frame; 9- unloading roller. DETAILED DESCRIPTION

[0021] In order to enable ordinary technicians in the field to better understand the technical solution of the present application, the technical solution of the present application is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Refer to the attached Figures 1 to 9 The automatic discharging mechanism of an eyeglass lens production line shown in the figure has a main conveyor belt 1 connecting multiple production equipments. The lens processing equipment connected to the main conveyor belt 1 mainly includes optometry equipment, grinding equipment, etc., which can realize continuous processing and production of lenses. In order to solve the current problem of stacking after the continuous processing of lenses, the present application designs an automatic discharging mechanism, which is arranged at one side of the tail end of the main conveyor belt 1 and connected to the main conveyor belt 1, replacing the shortcomings of the current unloading roller. The automatic discharging mechanism includes a transfer conveyor belt 2 for transferring the lens frames on the main conveyor belt 1, and a driving mechanism for stacking the lens frames on the transfer conveyor belt 2. When the production line completes the lens processing and conveys it to its tail end through the main conveyor belt 1, the lens frame is transferred through the transfer conveyor belt 2, and then the driving mechanism is activated to separate the lens frame on the transfer conveyor belt 2 (after the lens frame is transferred from the main conveyor belt 2 to the transfer conveyor belt 2, the transfer conveyor belt 2 is stationary so that the overlapping operation can be performed through the driving mechanism, and the operation and stop of the transfer conveyor belt 2 can be controlled by setting sensors and control systems in conjunction with the main conveyor belt and the driving mechanism) from the transfer conveyor belt 2 and overlap and stack. In this way of operation, the lens frames continuously conveyed on the main conveyor belt 1 can be stacked and stacked, thereby solving the problem that the number of stacked lens frames is still limited by the current unloading roller, and further improving the automation of lens production.

[0023] Specifically, Figure 2-3As shown, the driving mechanism includes clamping cylinders 3 symmetrically arranged on both sides of the lens frame transferred to the transfer conveyor belt 2, and a lifting cylinder 4 is arranged on the top side of each clamping cylinder 3 to separate the lens frame from the transfer conveyor belt 2, and a stacking mechanism for stacking the lens frames is also arranged on the lifting cylinder 4. Preferably, a clamping plate 31 abutting against the side wall of the lens frame is arranged at the piston end of the clamping cylinder 3. After the lens frame is transferred to the transfer conveyor belt 2 (before the transfer, the lifting cylinder 4 drives the clamping cylinder 3 and the clamping plate to be higher than the height of the lens frame to avoid contact interference with the lens frame during the transfer process, such as Figure 4 Then the lifting cylinder 4 drives the clamping cylinder 3 and the clamping plate to move downward, so that the clamping plate is horizontally aligned with the side wall of the lens frame, and then the clamping cylinder is actuated to clamp the side wall of the lens frame through the clamping plate (as shown in FIG. Figure 5 As shown), the lifting cylinder 4 rises to drive the lens frame to separate from the transfer conveyor belt 2, and the stacking mechanism is used to realize the stacking and placement of the clamped lens frames. After the stacking is completed, the clamping cylinder 3 and the lifting cylinder 4 are reset, waiting for the next transfer, stacking and stacking operation of the lens frames on the transfer conveyor belt 2.

[0024] Specifically, Figure 2 As shown, the folding mechanism includes a horizontal slide rail 5 that drives the lifting cylinder 4 to move horizontally and is offset from the transfer conveyor belt 2, and vertical slide rails 6 are vertically slidably connected at both ends of the horizontal slide rail 5. After the lens frame is separated from the transfer conveyor belt 2, the horizontal slide rail 5 (which is preferably a screw slide rail structure, which can be driven to rotate by a servo motor and drive the lifting cylinder 4 to move horizontally thereon) is actuated, driving the lifting cylinder 4 to drive the lens frame to move horizontally thereon and achieve offset with the transfer conveyor belt 2 ( Figure 6 As shown), the vertical slide rail 6 (which has the same screw structure as the horizontal slide rail 5) drives the horizontal slide rail 5 to move downward, and the lens frame is placed on the ground or on a placement platform for stacking ( Figure 7 As shown in the figure, as the number of stacking increases, the height of the horizontal slide rail 5 moving down each time gradually decreases, and the counter feedback can be used to control the appropriate stacking height of the horizontal slide rail 5 each time it moves down. When the stacking number (height) of the counter is reached, an alarm can be associated to remind the operator to transfer the stacked lens frames for the next stacking operation, thereby effectively solving the limitations of the current unloading roller, and realizing the automatic unloading and stacking operations after the lens processing is completed, reducing the manual operation cost and error rate.

[0025] In order to further increase the number of lens frames out of the stack and extend the operator transfer cycle, such as Figure 2As shown, a stacking conveyor belt 7 is also provided on the bottom side of the vertical slide rail 6 for placing multiple stacked lens frames at intervals. When stacking, the stacking conveyor belt 7 is stacked on the left side. When a certain number of stacking is reached, the stacking conveyor belt 7 moves to the right ( Fig. 9 The lens frames just stacked can be transferred horizontally, and then the stacking operation of the lens frames can continue on the left side of the stacking conveyor belt 7 (as shown by the arrow in the middle). Fig. 9 As shown), the number of lens frames that can be stacked can be further increased, and the operator's transfer cycle can be extended, further improving the production efficiency of the lenses.

[0026] The principle of the present application is: during operation, the transfer conveyor belt 2 runs synchronously with the main conveyor belt 1. After the lens frame is transferred to the transfer conveyor belt 2, the transfer conveyor belt 2 stops running, and then the lifting cylinder 4 drives the clamping cylinder 3 and the clamping plate to move down, so that the clamping plate corresponds to the side wall of the lens frame horizontally. Then the clamping cylinder is activated to clamp the side wall of the lens frame through the clamping plate. Then the lifting cylinder 4 rises to drive the lens frame to separate from the transfer conveyor belt 2. The horizontal slide rail 5 is activated to drive the lifting cylinder 4 to drive the lens frame to move horizontally thereon and achieve misalignment with the transfer conveyor belt 2. Then the vertical slide rail 6 drives the horizontal slide rail 5 to move down, and the lens frame is placed on the left side of the stacking conveyor belt 7 for stacking. When a certain number of lens frames are stacked, the stacking conveyor belt 7 runs a certain distance to the right, so that the newly stacked lens frames can be horizontally transferred. Then the stacking operation of the lens frames can continue on the left side of the stacking conveyor belt 7. After a sufficient number of lens frames are stacked on the stacking conveyor belt 7, the linked alarm can be used to remind the staff to transfer the lens frames.

[0027] The above shows and describes the basic principles, main features and advantages of the present application. Without departing from the spirit and scope of the present application, the present application may have various changes and improvements, which fall within the scope of the present application to be protected.

Claims

1. An automatic discharging mechanism for an eyeglass lens production line, the production line having a main conveyor belt (1) connecting a plurality of production equipment, characterized in that: The automatic discharging mechanism is arranged on one side of the tail end of the main conveyor belt (1) and connected to the main conveyor belt (1), and comprises a transfer conveyor belt (2) for transferring the lens frames on the main conveyor belt (1), and a driving mechanism for stacking the lens frames on the transfer conveyor belt (2).

2. The automatic discharging mechanism according to claim 1, characterized in that: The driving mechanism comprises clamping cylinders (3) symmetrically arranged on both sides of the lens frame connected to the transfer conveyor belt (2), a lifting cylinder (4) for separating the lens frame from the transfer conveyor belt (2) is arranged on the top side of each clamping cylinder (3), and a stacking mechanism for stacking the lens frames is also arranged on the lifting cylinder (4).

3. The automatic discharging mechanism according to claim 2, characterized in that: The folding mechanism comprises a horizontal slide rail (5) which drives the lifting cylinder (4) to move horizontally and is offset from the transfer conveyor belt (2). Vertical slide rails (6) are vertically slidably connected at both ends of the horizontal slide rail (5).

4. The automatic discharging mechanism according to claim 3 is characterized in that: A stacking conveyor belt (7) is also provided on the bottom side of the vertical slide rail (6) for placing a plurality of stacked lens frames at intervals.

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