A lens mold opening machine's adhesive tape tearing mechanism

Abstract

The application discloses a lens mold opening machine tape tearing mechanism, and relates to the technical field of mold opening machines, which is used for tearing off the tape of a to-be-processed mold. The to-be-processed mold comprises a tearing and pulling part of a side part. The lens mold opening machine tape tearing mechanism comprises a fixing module, a moving module and a detection assembly. The fixing module is used for fixing the to-be-processed mold and driving the to-be-processed mold to rotate. The moving module can move to approach or move away from the fixing module, and the moving module comprises a jaw assembly used for clamping the tearing and pulling part of the to-be-processed mold. The detection assembly comprises an air suction detection piece and a photoelectric detection piece. The air suction detection piece is used for detecting whether the air flow is blocked by the tearing and pulling part. The photoelectric detection assembly is used for detecting whether the tearing and pulling part moves in a detection range. When the photoelectric detection assembly and / or the air suction detection piece detects that the tearing and pulling part is in the clamping range of the jaw assembly, the jaw assembly is used for clamping the tearing and pulling part. The application has the effects of improving the efficiency of tearing off the tape of the to-be-processed mold of the lens and improving the automatic production efficiency.

Description

Technical Field

[0001] This application relates to the technical field of lens mold making machines, and in particular to a tape-tearing mechanism for a lens mold making machine. Background Technology

[0002] In the eyewear manufacturing industry, resin lenses are the mainstream material. During resin lens production, two molds are used, one upper and one lower, with a ring of adhesive tape around the outside to form a cavity shaped like a resin lens. Holes for resin injection are pre-drilled at the joints of the tapes. Resin is injected into the cavity, and once the resin has solidified, the tape needs to be removed from the mold, the mold opened, the resin lens extracted, and the mold recycled. For details, please refer to the appendix. Figure 1 As shown, the tape is folded at the end to form a tear section, so that workers or equipment can tear off the tape from the tear section and then open the mold to remove the lens.

[0003] In related technologies, there are two methods for tearing tape. One is to tear it manually, or to use a gripper device to hold the mold to be processed and keep the mold to be processed able to rotate, and then manually pull the tearing part to tear off the tape. The other method is to use a lens mold opening machine to tear the tape. The lens mold opening machine includes multiple processes and corresponding mechanisms for feeding, tearing tape, opening the mold, and unloading multiple parts.

[0004] If manual tearing of tape is used, or a combination of manual and mechanical methods, only one mold can be processed at a time, and the process is cumbersome and inefficient. Using existing mold-opening machines to remove the tape is not accurate enough in identifying the tear section, sometimes requiring manual assistance or a camera for identification, which also results in low efficiency and needs improvement. Utility Model Content

[0005] In order to improve the efficiency of tearing tape from the lens mold and increase the efficiency of automated production, this application provides a tape tearing mechanism for a lens mold opening machine.

[0006] This application provides a tape-tearing mechanism for a lens mold-opening machine, which adopts the following technical solution:

[0007] A tape-tearing mechanism for a lens mold-opening machine, used to tear off the tape from a mold to be processed, the mold including a tearing section on the side, comprising:

[0008] A fixing module is used to fix the mold to be processed and can drive the mold to be processed to rotate.

[0009] A movable module, the movable module being movable to move closer to or further away from the fixed module, and the movable module including a gripper assembly for holding the tearing portion of the mold to be processed;

[0010] A detection component is disposed on the moving module and includes an air intake detection component and a photoelectric detection component. The air intake detection component is used to detect whether the airflow is blocked by the tearing part. The photoelectric detection component is used to detect whether there is movement of the tearing part within the measured range. When the photoelectric detection component detects and / or the air intake detection component detects that the tearing part is within the clamping range of the gripper assembly, the gripper assembly is used to clamp the tearing part.

[0011] By adopting the above technical solution, the mold to be processed is placed on a fixed mold by a robotic arm. The moving module moves, bringing the gripper assembly and detection assembly closer to the mold on the fixed module. When the fixed module rotates clockwise, the tearing part moves. When the suction detector detects that the airflow direction is blocked by the tearing part, or the photoelectric detector detects a change in the fiber optic value caused by the movement of the tearing part within the corresponding range, determining that the tearing part is within the clamping range, the gripper assembly can move to clamp the tearing part. Then, the moving module drives the gripper assembly to move, and the fixed mold continues to rotate clockwise, thereby tearing off the tape from the mold. Because the tape tearing machine has two detection methods, it can accurately detect the exposed tearing part of the tape around the mold, avoiding the inability to detect when the tearing part is partially stuck to the mold. It can efficiently and automatically complete the tape tearing process, saving labor costs and achieving high equipment production efficiency.

[0012] Optionally, the fixing module includes a suction cup for fixing the mold to be processed, and a first driving source for driving the suction cup to rotate.

[0013] By adopting the above technical solution, the fixed mold uses a suction cup to fix the mold to be processed, and the first driving source can drive the suction cup to rotate as a whole, thereby driving the mold to be processed to rotate.

[0014] Optionally, the fixing module further includes a positioning component, which includes at least two calibration positioning clamps, the calibration positioning clamps being movable and abutting against the outer wall of the mold to be processed, and the fixing module includes a second driving source for driving the calibration positioning clamps to move;

[0015] The calibration and positioning clamping component includes a main body and a calibration and positioning part rotatably connected to the main body. The calibration and positioning part is used to abut against the outer wall of the mold to be processed, and the rotation axis of the calibration and positioning part is parallel to the rotation axis of the mold to be processed.

[0016] By adopting the above technical solution, at least two calibration and positioning clamping parts can limit the mold to be processed, and a rotatable calibration and positioning part is provided to abut against the outer wall of the mold to be processed, so as to calibrate and position the mold to be processed without affecting the rotation of the mold to be processed.

[0017] Optionally, it includes a moving track and a third drive source, wherein the moving module is slidably connected to the moving track, and the third drive source is used to drive the moving module to move along the length direction of the moving track.

[0018] By adopting the above technical solution, the third driving source drives the moving module to move along the moving track and adjusts the position of the detection component and the gripper component.

[0019] Optionally, the detection component includes a detection block, the inhalation detection element is located within the detection block, and the photoelectric detection element includes a detection section located within the detection block;

[0020] The detection block has an airflow detection hole on the same side, one end of the airflow detection hole is opposite to the air intake detection element, and one end of the detection part is opposite to the photoelectric detection element.

[0021] By adopting the above technical solution, when the air intake detection component can detect that the airflow detection hole is covered, and / or the photoelectric detection component detects that the optical fiber detection hole is blocked, it indicates that the tearing part is within the corresponding clamping range. At this time, the drive gripper assembly can clamp the tearing part.

[0022] Optionally, multiple airflow detection holes are provided and distributed around the optical fiber detection hole, and the air intake detection element can detect the airflow in multiple airflow detection holes.

[0023] By adopting the above technical solution, multiple airflow detection holes are arranged around the fiber optic detection hole, which makes the detection range of the air intake detection component wider and can be used in conjunction with the detection of photoelectric detection components to further improve the detection accuracy.

[0024] Optionally, the gripper assembly includes the detection block, a movable gripper block, and a fourth drive source for driving the gripper block to move and for the detection block to grip the tearing part.

[0025] By adopting the above technical solution, when the detection component detects that the tearing part is located between the gripper block and the detection block, the fourth drive source drives the gripper block to move and clamp and fix the tearing part.

[0026] Optionally, the moving module includes a mounting part and a limiting part. The gripper assembly is detachably fixed to the mounting part. The mounting part is slidably connected to the limiting part. The sliding direction of the mounting part is parallel to the moving direction of the moving module. An elastic element is provided between the end of the mounting part away from the fixed module and the limiting part.

[0027] By adopting the above technical solution, the gripper assembly can move appropriately on the limiting part together with the mounting part. When the gripper assembly moves toward the fixed module, the elastic element can be compressed, reducing the possibility that the gripper assembly may have rigid contact with the mold to be processed, causing damage to the mold.

[0028] Optionally, multiple fixed modules are arranged side by side, and multiple moving modules are also arranged side by side and driven to move by the same third driving source. The fixed modules and the moving modules are used in a one-to-one correspondence.

[0029] By adopting the above technical solution, multiple modules to be processed can simultaneously perform tape tearing, further improving work efficiency.

[0030] Optionally, the moving module is provided with a first air blowing element whose air outlet direction is towards the gripper assembly;

[0031] And / or, the fixing module is provided with a second air blowing component with the air outlet direction facing the mold to be processed.

[0032] By adopting the above technical solution, after the tape is torn off, the gripper assembly releases the tape, which can fall into the tape collection bin of the mold opening machine for collection. The first air blowing component facilitates the separation of the tape and the gripper assembly and guides the falling direction of the tape. The second air blowing component can accelerate the cooling of the mold to be processed and make the torn part move closer to the gripper assembly, making it easier for the detection component to detect the torn part.

[0033] In summary, this application includes at least one of the following beneficial effects:

[0034] 1. The mold to be processed is fixed by the suction cup of the fixing module. The rotation of the suction cup causes the mold to be processed to rotate clockwise, and the position of the tearing part also changes accordingly. When the suction detection component detects that the airflow direction is blocked by the tearing part, or the fiber detection component detects that there is a change in the fiber value caused by the movement of the tearing part within the corresponding range, and determines that the tearing part is within the clamping range, the gripper assembly can move to clamp the tearing part. Then the moving module drives the gripper assembly to move, and the suction cup continues to rotate, thereby tearing off the tape on the mold to be processed.

[0035] 2. At least two positioning components are provided to limit the mold to be processed, and a rotatable calibration and positioning part is provided to abut against the outer wall of the mold to be processed, so as to calibrate and position the mold to be processed without affecting the rotation of the mold to be processed.

[0036] 3. The first air blowing component facilitates the separation of the tape and the gripper assembly and guides the direction of tape drop; the second air blowing component accelerates the cooling of the mold to be processed and allows the tearing part to move closer to the gripper assembly, making it easier for the detection component to detect the tearing part. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of the mold to be processed;

[0038] Figure 2 This is a schematic diagram of the overall structure of an embodiment of this application;

[0039] Figure 3 This is a partial structural diagram illustrating the fixed module structure in an embodiment of this application;

[0040] Figure 4 This is a partial structural diagram illustrating the location of the first driving source in an embodiment of this application;

[0041] Figure 5 This is a partial structural diagram illustrating the moving module and detection component according to an embodiment of this application;

[0042] Figure 6 This is a partial structural schematic diagram of the gripper assembly shown in an embodiment of this application.

[0043] Explanation of reference numerals in the attached drawings: 1. Mold to be processed; 11. Tear-off section; 2. Fixing module; 21. Suction cup; 22. First drive source; 23. Calibration and positioning clamping component; 231. Main body; 232. Calibration and positioning section; 24. Second drive source; 25. Second air blowing component; 3. Moving module; 31. Gripper assembly; 311. Gripper block; 312. Fourth drive source; 313. Connecting seat; 32. Mounting section; 33. Limiting section; 34. Elastic component; 35. First air blowing component; 36. Mounting plate; 4. Detection component; 41. Detection block; 411. Airflow detection hole; 412. Fiber optic detection hole; 42. Photoelectric detection component; 421. Detection section; 5. Moving track; 6. Third drive source; 7. Receiving bin; 8. Support plate. Detailed Implementation

[0044] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0045] refer to Figure 1 The mold to be processed in this application is 1. The mold to be processed is cylindrical in shape and has a ring of adhesive tape on its side wall. The tape forms a tear-off part 11 at the end. By pulling the tear-off part 11, the tape can be torn off from the mold to be processed.

[0046] This application discloses a tape-tearing mechanism for a lens mold-opening machine, referring to... Figure 2 The tape-tearing mechanism of the lens mold-making machine is mounted on the machine base and can transfer the mold 1 to be processed by a robotic arm. The tape-tearing mechanism includes a fixing module 2 for fixing the mold 1 to be processed, a detection component 4 for detecting the position of the tearing part 11 on the fixing module 2, a gripper assembly 31 for clamping the tearing part 11, and a moving module 3 for moving the gripper assembly 31 to separate the tape from the main body of the mold 1 to be processed.

[0047] Reference Figure 3 and Figure 4 Specifically, the fixing module 2 includes a suction cup 21. The bottom of the suction cup 21 is used to connect to an external air pump. The suction cup 21 can hold or release the mold 1 to be processed, realizing the detachable fixing of the mold 1. A support plate 8 is fixed on the mold opening machine base by a support column, and the suction cup 21 is rotatably connected to the support plate 8. A first drive source 22 is installed at the bottom of the support plate 8. The first drive source 22 is a servo motor. The output end of the first drive source 22 drives the suction cup 21 to rotate through a belt and pulley transmission. When the gripper assembly 31 moves and drags the tearing part 11, the first drive source 22 can drive the suction cup 21 and the corresponding mold 1 to be processed to rotate together.

[0048] Reference Figure 2 and Figure 3 The fixing module 2 also includes a second drive source 24 and a calibration positioning clamp 23 located above the support plate 8. At least two calibration positioning clamps 23 are provided; this application uses two as an example. The two calibration positioning clamps 23 are arranged opposite each other and located on both sides of the suction cup 21. The second drive source 24 can specifically be a bidirectional sliding cylinder, with each of its two output ends fixed to a calibration positioning clamp 23, thereby enabling the two calibration positioning clamps 23 to move towards and away from each other. In other embodiments of this application, a motor and a bidirectional lead screw transmission method can also be used. The calibration positioning clamp 23 includes a main body 231 fixed to the output end of the second drive source 24, and a calibration positioning part 232 rotatably connected to the main body 231. The calibration positioning part 232 is cylindrical, and its rotation axis is parallel to the rotation axis of the suction cup 21. At least one calibration positioning part 232 is provided on the main body 231; this application uses two as an example. Four calibration positioning parts 232 surround the mold 1 to be processed and abut against the sidewall of the mold 1 to be processed. This allows the calibration and positioning part 232 to provide rotational resistance to the mold 1 to be processed when the tape is being torn, making it easier to remove the tape. Furthermore, by setting the calibration and positioning part 232 to abut against the mold 1 to be processed, the mold 1 to be processed can be calibrated and positioned, making it easier to install and fix the mold 1 to be processed, and also reducing the movement of the mold 1 to be processed when the tape is being torn.

[0049] Reference Figure 5 and Figure 6The tape-tearing mechanism includes a moving track 5 fixed to the mold-opening machine frame by a support column, a moving module 3 slidably connected to the moving track 5, and driven by a third drive source 6 fixed to one end of the moving track 5. Specifically, the third drive source 6 is a servo motor, which drives the moving module 3 to move through the transmission method of the motor and the screw.

[0050] The moving module 3 includes a mounting plate slidably connected to the moving track 5 via a third drive source 6. A limiting part 33 is fixed on the mounting plate, and a mounting part 32 is slidably connected to the limiting part 33, i.e., a groove is formed on the limiting part 33, and the mounting part 32 is slidably connected in the groove. An elastic element 34, specifically a spring, is provided between the end of the mounting part 32 away from the fixed module 2 and the inner wall of the limiting part 33, and a guide rod passes through the mounting part 32, with the spring sleeved outside the guide rod. The gripper assembly 31 is fixed to the limiting part 33 by bolts, enabling it to move together with the moving module 3. By providing a spring and allowing the mounting part 32 to move relative to the limiting part 33, when the gripper assembly 31 moves toward the fixed module 2, the elastic element 34 can be compressed, reducing the possibility of rigid contact between the gripper assembly 31 and the mold 1 to be processed, which could damage the mold 1.

[0051] Reference Figure 5 and Figure 6 The detection component 4 includes a detection block 41 and a photoelectric detection element 42 fixed on the mounting plate 36. One end of the detection block 41 is set as an inclined surface and has an optical fiber detection hole 412 and an airflow detection hole 411. Multiple airflow detection holes 411 are formed and surround the optical fiber detection hole 412. The photoelectric detection element 42 includes a detection part 421 located in the detection block 41, and the detection part 421 is connected to the optical fiber detection hole 412. An air intake detection element is disposed in the detection block 41 and is connected to the airflow detection hole 411. When the air intake detection element detects that the airflow detection hole 411 is covered, and / or when the photoelectric detection element 42 detects that the optical fiber detection hole 412 is blocked, it indicates that the tearing part 11 is within the corresponding clamping range. At this time, the drive gripper assembly 31 can clamp the tearing part 11.

[0052] The gripper assembly 31 includes a connecting seat 313, which is connected to the mounting part 32 by bolts. The detection block 41 is fixed to the end of the connecting seat 313. The gripper block 311 is rotatably connected to the connecting seat 313. The gripper assembly 31 also includes a fourth drive source 312 rotatably connected to the connecting seat 313 for driving the gripper block 311 to rotate. Specifically, the fourth drive source 312 is a cylinder that can drive the gripping part to rotate and the detection part 421 to clamp the tearing part 11.

[0053] Reference Figure 1The detection component 4 and the gripper component 31 are each provided with three sets on the mounting plate, and the corresponding fixing module 2 is also provided with three sets, so that the mold to be processed 1 can process three at the same time, which greatly improves the efficiency of tearing tape. In other embodiments of this application, the detection component 4, the gripper component 31 and the fixing module 2 can be set to other quantities.

[0054] Reference Figure 5 A second air-blowing component 25, with the same number as the fixed module, is rotatably connected to the support plate 8. The second air-blowing component 25 is connected to an external air pump and located on one side of the suction cup 21. The airflow from the second air-blowing component 25 can be adjusted to directly cool the mold 1 to be processed, or towards the front end of the mold 1 to blow the tearing part 11, thus facilitating the detection component 4 to obtain the position of the tearing part 11. A receiving bin 7 is also provided on the mold opening machine base, located on the travel path of the moving component. After the gripper assembly 31 tears off the tape from the mold 1 to be processed, it can fall into the receiving bin 7 for collection. A first air-blowing component 35 is rotatably connected to the corresponding mounting plate, and the first air-blowing component 35 is connected to an external air pump. When the first air blowing component 35 faces the gripper assembly 31, it can facilitate the collection of the torn tape into the receiving bin 7. When the first air blowing component 35 faces the detection range during the detection of the detection component 4, it plays a role in cooling the mold 1 to be processed and improving the detection effect of the detection component 4.

[0055] The implementation principle of the tape-tearing mechanism of the lens mold-opening machine according to the embodiment of this application is as follows: During operation, the robot arm of the mold-opening machine moves the mold 1 to be processed to the suction cup 21, and fixes the mold 1 to be processed by the suction cup 21. The two calibration and positioning clamps 23 move towards each other, so that the calibration and positioning part 232 abuts against the periphery of the mold 1 to be processed. The moving module 3 moves along the first moving slide rail to a position close to the mold 1 to be processed, and drives the mold 1 to be processed to rotate by the first driving source 22. The tearing part 11 of the mold 1 to be processed also rotates accordingly. When the detection component 4 detects that the tearing part 11 is within its range, the fourth drive source 312 drives the gripper block 311 to move. The gripper block 311 and the detection block 41 hold the tearing part 11. The first drive source 22 drives the mold to be processed 1 to rotate, and the third drive source 6 drives the moving module 3 to move along the moving track 5, so as to tear off the tape on the mold to be processed 1. After the gripper component 31 releases the tearing part 11, the tape can fall into the receiving bin 7 for collection. The mold to be processed 1 is then transported to the next station for mold opening by the robot.

[0056] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A tape-tearing mechanism for a lens mold-opening machine, used to tear the tape off a mold (1) to be processed, the mold (1) including a tearing portion (11) on the side, characterized in that, include: A fixing module (2) is used to fix the mold to be processed (1) and can drive the mold to be processed (1) to rotate; The moving module (3) is movable to move closer to or further away from the fixed module (2), and the moving module (3) includes a gripper assembly (31) for gripping the tearing part (11) of the mold to be processed (1). The detection component (4) is disposed on the moving module (3) and includes an air intake detection component and a photoelectric detection component (42). The air intake detection component is used to detect whether the airflow is blocked by the tearing part (11). The photoelectric detection component (42) is used to detect whether the tearing part (11) is active within the measured range. When the photoelectric detection component (42) detects and / or the air intake detection component detects that the tearing part (11) is within the clamping range of the gripper assembly (31), the gripper assembly (31) is used to clamp the tearing part (11).

2. The tape-tearing mechanism of a lens mold-opening machine according to claim 1, characterized in that, The fixing module (2) includes a suction cup (21) for fixing the mold (1) to be processed, and a first driving source (22) for driving the suction cup (21) to rotate.

3. The tape-tearing mechanism of a lens mold-opening machine according to claim 1, characterized in that, The fixing module (2) further includes a positioning component, which includes at least two calibration positioning clamps (23). The calibration positioning clamps (23) are movable and abut against the outer wall of the mold to be processed (1). The fixing module (2) includes a second driving source (24) for driving the calibration positioning clamps (23) to move. The calibration positioning clamp (23) includes a main body (231) and a calibration positioning part (232) rotatably connected to the main body (231). The calibration positioning part (232) is used to abut against the outer wall of the mold (1) to be processed. The rotation axis of the calibration positioning part (232) is parallel to the rotation axis of the mold (1) to be processed.

4. The tape-tearing mechanism of a lens mold-opening machine according to claim 1, characterized in that, Includes a moving track (5) and a third drive source (6). The moving module (3) is slidably connected to the moving track (5). The third drive source (6) is used to drive the moving module (3) to move along the length direction of the moving track (5).

5. The tape-tearing mechanism of a lens mold-opening machine according to claim 1, characterized in that, The detection component (4) includes a detection block (41), the inhalation detection element is located within the detection block (41), and the photoelectric detection element (42) includes a detection section (421) located within the detection block (41). The detection block (41) has an airflow detection hole (411) and an optical fiber detection hole (412) on the same side. One end of the airflow detection hole (411) is opposite to the air intake detection element, and one end of the detection part (421) is opposite to the photoelectric detection element (42).

6. The tape-tearing mechanism of a lens mold-opening machine according to claim 5, characterized in that, Multiple airflow detection holes (411) are provided and distributed around the optical fiber detection hole (412). The air intake detection device can detect the airflow in multiple airflow detection holes (411).

7. The tape-tearing mechanism of a lens mold-opening machine according to claim 5, characterized in that, The gripper assembly (31) includes the detection block (41), a movable gripper block (311), and a fourth drive source (312) for driving the gripper block (311) to move and for the detection block (41) to grip the tearing part (11).

8. The tape-tearing mechanism of a lens mold-opening machine according to claim 1, characterized in that, The moving module (3) includes a mounting part (32) and a limiting part (33). The gripper assembly (31) is detachably fixed to the mounting part (32). The mounting part (32) is slidably connected to the limiting part (33). The sliding direction of the mounting part (32) is parallel to the moving direction of the moving module (3). An elastic element (34) is provided between the end of the mounting part (32) away from the fixed module (2) and the limiting part (33).

9. The tape-tearing mechanism of a lens mold-opening machine according to claim 4, characterized in that, Multiple fixed modules (2) are arranged side by side, and multiple mobile modules (3) are also arranged side by side and driven to move by the same third driving source (6). The fixed modules (2) and the mobile modules (3) are used in a one-to-one correspondence.

10. The tape-tearing mechanism of a lens mold-opening machine according to claim 1, characterized in that, The moving module (3) is provided with a first air blowing element (35) whose air outlet direction is toward the gripper assembly (31); And / or, the fixing module (2) is provided with a second air blowing element (25) with the air outlet direction facing the mold (1) to be processed.

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