Cutting device for processing optical glass

Abstract

This invention relates to the field of optical glass processing and discloses a cutting device for optical glass processing, comprising a base plate, a storage structure for storing glass before and after cutting, a pick-and-place structure disposed on the front and rear sides of the base plate for transferring the glass before and after cutting, a clamping structure disposed on the pick-and-place structure for clamping the glass and driving the glass to move, and debris collection structures disposed on both the left and right sides of the base plate; by setting up the storage structure, clamping structure and pick-and-place structure, the pick-and-place structure can drive the clamping structure to move along a square trajectory, and the clamping structure can take out the optical glass from the storage frame of the storage structure, cut it during the lateral movement after taking it out, and stack the cut optical glass into the stacking frame during the downward movement, and after stacking, the clamping structure is reset to continue to take out the next piece of optical glass for cutting. This operation is more labor-saving and convenient, and greatly improves work efficiency.

Description

Technical Field

[0001] This invention relates to the technical field of optical glass processing, and in particular to a cutting apparatus for optical glass processing. Background Technology

[0002] Optical glass is a type of glass material specifically designed for optical applications. It possesses precise optical constants, high transparency, and excellent physicochemical stability. It is mainly used to manufacture key components in optical instruments (such as lenses, prisms, and mirrors). Its core characteristics include the ability to control the direction of light propagation and spectral distribution, and it is widely used in imaging, communication, medical, aerospace, and other fields. During the processing of optical glass, cutting devices are used for cutting and processing. The prior art patent CN223189110U discloses a cutting device for optical glass processing. Through an adjustable mechanism, the cutting device can be adjusted in multiple directions. First, the depth direction of the cutting device is adjusted, and a first motor is started. The first motor rotates the threaded rod, which in turn drives the crossbeam to slide in the first groove. When the desired position is reached, the first motor is turned off. Next, the lateral direction of the cutting device is adjusted, and a second motor is started. The second motor rotates the gear, which drives a toothed slide bar connected to the gear to slide laterally in the second groove. This, in turn, drives a slider fixedly connected to the toothed slide bar to slide in the third groove. Since the bottoms of the two sliders are fixedly connected by a connecting plate, the cutting device mounted on the bottom of the connecting plate moves laterally together. When the desired position is reached, the second motor is turned off. This achieves the effect of multi-directional adjustment of the cutting device, thereby improving the device's adaptability to different types and specifications of optical glass, reducing production costs, and lessening the workload and error probability of operators. However, in actual processing, the optical glass to be cut needs to be placed on the worktable. After cutting, the cut optical glass is removed from the worktable, and then the next piece of optical glass is placed on the worktable to continue cutting. This operation is time-consuming and labor-intensive, reducing work efficiency. Summary of the Invention

[0003] To address the problems mentioned in the background art, the present invention provides a cutting apparatus for optical glass processing.

[0004] The cutting device for optical glass processing provided by this invention adopts the following technical solution: A cutting device for optical glass processing includes a base plate and a storage structure disposed on the base plate for storing glass before and after cutting. The material handling and transfer structure is located on the front and rear sides of the base plate and is used to transfer glass before and after cutting. The clamping structure provided on the material handling and transfer structure is used to clamp the glass and drive the glass to transfer. The base plate is equipped with debris collection structures on both the left and right sides to collect glass debris during cutting and improve environmental quality. The cutting structure is provided on the material handling and transfer structure.

[0005] As one embodiment, the material handling structure includes: Two fixed frames are provided on the front and rear sides of the base plate. Vertical grooves are provided on the inner walls of the left and right sides of the fixed frames. A lifting frame is slidably arranged in the vertical groove of each fixed frame. A first horizontal groove is provided on the inner walls of the upper and lower sides of the lifting frame. A square frame is slidably arranged in the first horizontal groove of the lifting frame. A first vertical plate is fastened to the top of the base plate near each fixed frame by bolts. A first motor is installed at the top of the first vertical plate. One end of the output shaft of the first motor is connected to a rotating rod. The rotating rod is inserted into one end of the square frame and a rotating block is fixedly sleeved thereon. The side of the rotating block is close to the square frame.

[0006] In one embodiment, the cutting structure includes a mounting plate connected between two fixed frames, a second motor is mounted on the mounting plate, and a cutting blade is mounted on one end of the output shaft of the second motor.

[0007] As one embodiment, the storage structure includes two sets of third vertical plates connected to the base plate near the middle. One set of the third vertical plates has a stacking frame installed at the top, and the other set of the third vertical plates has a storage frame installed at the top. The stacking frame and the storage frame have retrieval slots in the middle of their front and rear sides.

[0008] As one embodiment, the clamping structure includes a second vertical plate connected to a square frame, a cylinder installed at the top of the second vertical plate, a fixed rod connected to one end of the cylinder output shaft, a clamping plate provided at one end of the fixed rod, and a clamping structure provided between the fixed rod and the clamping plate.

[0009] In one embodiment, the clamping structure includes a central groove formed on a fixed rod. An electric telescopic rod is installed on one end of the groove wall. One end of the output shaft of the electric telescopic rod is connected to a movable plate. The movable plate is H-shaped. Guide grooves are formed near the four ends of the movable plate. A guide rod is connected between the two ends of each guide groove. A movable block is movably sleeved on the guide rod. A clamping block is provided on the movable block. T-shaped strips are connected to both ends of the clamping plate. Two first driving rods are connected between the two T-shaped strips. A second driving groove is formed on the clamping block. The first driving rod moves through the second driving groove.

[0010] As one embodiment, the debris collection structure includes two collection frames disposed on the left and right sides above the base plate. Each collection frame is provided with a lifting cylinder through an installation structure. A fourth vertical plate is movably inserted into the lifting cylinder, and the two fourth vertical plates are disposed on the base plate through a movable lifting structure.

[0011] As one embodiment, the mounting structure includes a mounting rod connected to the bottom of the collection frame. The mounting rod moves through a mounting hole opened on the lifting cylinder. A limiting ring is fixedly sleeved on the mounting rod. The limiting ring fits against one side of the lifting cylinder. One end of the mounting rod is threaded to tighten a limiting plate. The limiting plate and the mounting rod are provided with matching threads.

[0012] In one embodiment, the movable lifting structure includes a second horizontal groove on the base plate. Movable seats are slidably disposed at both ends of the second horizontal groove. The movable seats are fixedly disposed at the bottom end of the fourth vertical plate. A bidirectional screw is rotatably inserted into the second horizontal groove. The left and right sections of the bidirectional screw have opposite thread directions. The movable seats have threaded grooves for the bidirectional screw to pass through. A third motor is installed in the middle of the right side of the base plate. One end of the output shaft of the third motor is connected to the bidirectional screw. Second driving rods are connected to the bottom ends of both the front and rear ends of the lifting cylinder. Two sets of fixed plates are disposed on the base plate on both sides of the second horizontal groove. First driving grooves are formed on the fixed plates, and one end of the second driving rod is movably inserted into the corresponding first driving groove.

[0013] In summary, the present invention has the following beneficial technical effects: This invention features a storage structure, a clamping structure, and a pick-and-place structure. The pick-and-place structure moves the clamping structure along a square trajectory, allowing optical glass to be retrieved from the storage frame of the storage structure. During the lateral movement after retrieval, the optical glass is cut. As it moves downward, the cut optical glass is stacked in a stacking frame. After stacking, the clamping structure resets, allowing the next piece of optical glass to be retrieved and cut. This operation is more labor-saving and convenient, greatly improving work efficiency. This invention uses a clamping structure to clamp the two pieces of optical glass after cutting, ensuring that the cut optical glass can be smoothly unloaded and stacked into the stacking frame, while avoiding the problem of the optical glass falling off during the cutting process; This invention incorporates a debris collection structure and a movable lifting structure. During cutting, the debris collection structure is moved to below the optical glass via the movable lifting structure to collect the debris generated during the cutting process, thereby improving environmental quality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a cutting device for optical glass processing according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure at the fixed frame in an embodiment of the present invention; Figure 3 This is a structural schematic diagram of the second vertical plate in an embodiment of the present invention; Figure 4 This is an embodiment of the present invention. Figure 3 Enlarged view of the structure at point A; Figure 5 This is a schematic diagram of the structure after the fixing frame on the base plate is disassembled in an embodiment of the present invention; Figure 6 This is an embodiment of the present invention. Figure 5 Enlarged view of the structure at point B; Figure 7 This is a schematic diagram of the structure of the collection frame in an embodiment of the present invention.

[0015] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Fixing frame; 3. First vertical plate; 4. First motor; 5. Rotating rod; 6. Rotating block; 7. Vertical slot; 8. Lifting frame; 9. Second vertical plate; 10. Square frame; 11. First horizontal slot; 12. Mounting plate; 13. First drive slot; 14. Second motor; 15. Cutting blade; 16. Third vertical plate; 17. Stacking frame; 18. Pick-and-place slot; 19. Storage frame; 20. Cylinder; 21. Fixing rod; 22. Clamping plate; 23. Intermediate groove; 24. Electric telescopic rod; 25. Moving plate; 26. Clamping block; 27. First driving rod; 28. Second driving groove; 29. ​​Guide groove; 30. Guide rod; 31. Moving block; 32. Fourth vertical plate; 33. Lifting cylinder; 34. Collection frame; 35. Mounting rod; 36. Limiting plate; 37. Second horizontal groove; 38. Bidirectional screw; 39. Third motor; 40. Moving seat; 41. Second driving rod; 42. Fixing plate; 43. T-shaped strip. Detailed Implementation

[0016] The following is in conjunction with the appendix Figures 1-7 The present invention will be described in further detail below.

[0017] This invention discloses a cutting apparatus for optical glass processing. (Refer to...) Figures 1-7A cutting device for optical glass processing includes: a base plate 1; a storage structure disposed on the base plate 1 for storing glass before and after cutting; a pick-and-place structure disposed on the front and rear sides of the base plate 1 for transferring glass before and after cutting; a clamping structure disposed on the pick-and-place structure for clamping the glass and driving the glass to move; and debris collection structures disposed on both the left and right sides of the base plate 1 to collect glass debris during cutting and improve environmental quality; and a cutting structure disposed on the pick-and-place structure. The pick-and-place structure includes: a structure disposed on the base plate 1... Two fixed frames 2 are located on the front and back sides. Vertical grooves 7 are provided on the inner walls of the left and right sides of each fixed frame 2. A lifting frame 8 is slidably installed in the vertical groove 7 of each fixed frame 2. A first horizontal groove 11 is provided on the inner walls of the upper and lower sides of the lifting frame 8. A square frame 10 is slidably installed in the first horizontal groove 11 of the lifting frame 8. A first vertical plate 3 is fastened to the top of the base plate 1 near each fixed frame 2 by bolts. A first motor 4 is installed at the top of the first vertical plate 3. One end of the output shaft of the first motor 4 is connected to a rotating rod 5. A rotating block 6 is fixedly sleeved into one end of the square frame 10. The side of the rotating block 6 is close to the square frame 10. The cutting structure includes a mounting plate 12 connected between the two fixed frames 2. A second motor 14 is installed on the mounting plate 12. A cutting blade 15 is installed at one end of the output shaft of the second motor 14. The storage structure includes two sets of third vertical plates 16 connected to the base plate 1 near the middle. One set of third vertical plates 16 has a stacking frame 17 installed at the top and the other set of third vertical plates 16 has a storage frame 19 installed at the top. The stacking frame 17 and the storage frame 19 have retrieval slots 18 in the middle of their front and rear sides. The clamping structure includes a second vertical plate 9 connected to the square frame 10. A cylinder 20 is installed at the top of the second vertical plate 9. One end of the output shaft of the cylinder 20 is connected to a fixed rod 21. A clamping plate 22 is provided at one end of the fixed rod 21. A clamping structure is provided between the fixed rod 21 and the clamping plate 22. The clamping structure includes a central groove 23 formed on a fixed rod 21. An electric telescopic rod 24 is installed on one end wall of the central groove 23. One end of the output shaft of the electric telescopic rod 24 is connected to a movable plate 25. The movable plate 25 is "H"-shaped. Guide grooves 29 are formed near the four ends of the movable plate 25. A guide rod 30 is connected between the two ends of each guide groove 29. A movable block 31 is movably sleeved on the guide rod 30. A clamping block 26 is set on the movable block 31. T-shaped strips 43 are connected to both ends of the clamping plate 22. Two first driving rods 27 are connected between two T-shaped strips 43. A second driving rod 27 is formed on the clamping block 26. The first driving rod 27 moves through the second driving groove 28. First, the optical glass to be cut is stacked in the storage frame 19. Then, the first motor 4 is started to drive the rotating rod 5 and the rotating block 6 to rotate. The rotating block 6 presses against the inner wall of the square frame 10, pushing the lifting frame 8 upward. When the lifting frame 8 moves the pressing plate 22 to the top of the glass in the storage frame 19, the cylinder 20 is started to move the pressing plate 22. The two pressing plates 22 press against the glass to be cut. Then, the first motor 4 continues to drive the rotating block 6 to rotate and press against the inner wall of the square frame 10, continuing to push the lifting frame 8 upward. This removes the clamped optical glass from the storage frame 19. At this point, the electric telescopic rod 24 is activated, causing the moving plate 25 to move towards the side closest to the optical glass. This moves the clamping block 26 along the first driving rod 27. The first driving rod 27 presses against the wall of the second driving groove 28, causing the clamping block 26 to clamp the optical glass at the clamping plate 22. Then, the first motor 4 drives the rotating block 6 to press against one side of the inner wall of the square frame 10, causing the square frame 10 to move laterally within the lifting frame 8. The lifting frame 8 maintains its position and moves the clamped optical glass horizontally. The optical glass is cut using a rotating cutting blade 15. After cutting, the rotating block 6 presses against the inner wall of the square frame 10, pushing the lifting frame 8 down in the fixed frame 2 to send the cut optical glass to the stacking frame 17. The cylinder 20 and the electric telescopic rod 24 are activated to release the optical glass, thus stacking the cut optical glass into the stacking frame 17. Finally, the rotating block 6 continues to rotate, pressing against the inner wall of the other side of the square frame 10, pushing the square frame 10 to move in the lifting frame 8, thereby driving the clamping plate 22 to reset, and continuing to cut the next piece of optical glass.

[0018] See Figures 5-7 The debris collection structure includes two collection frames 34 set on the left and right sides above the base plate 1. Each collection frame 34 is equipped with a lifting cylinder 33 through an installation structure. A fourth vertical plate 32 is movably inserted into the lifting cylinder 33. The two fourth vertical plates 32 are set on the base plate 1 through a movable lifting structure. The mounting structure includes a mounting rod 35 connected to the bottom of the collection frame 34. The mounting rod 35 moves through the mounting hole opened on the lifting cylinder 33. A limiting ring is fixedly sleeved on the mounting rod 35. The limiting ring fits against one side of the lifting cylinder 33. One end of the mounting rod 35 is screwed to a limiting plate 36. The limiting plate 36 and the mounting rod 35 are provided with matching threads. The movable lifting structure includes a second horizontal groove 37 on the base plate 1. Movable seats 40 are slidably mounted at both ends of the second horizontal groove 37. The movable seats 40 are fixedly mounted at the bottom of the fourth vertical plate 32. A bidirectional screw 38 is rotatably inserted into the second horizontal groove 37. The two sections of the bidirectional screw 38 have opposite thread directions. The movable seats 40 have threaded grooves for the bidirectional screw 38 to pass through. A third motor 39 is installed in the middle of the right side of the base plate 1. One end of the output shaft of the third motor 39 is connected to the bidirectional screw 38. Second driving rods 41 are connected to the bottom ends of both the front and rear ends of the lifting cylinder 33. Two sets of fixed plates 42 are installed on the base plate 1 on both sides of the second horizontal groove 37. First driving grooves 13 are opened on the fixed plates 42. One end of the second driving rod 41 is movably inserted into the corresponding first driving groove 13. During the cutting of optical glass, the third motor 39 is started to drive the bidirectional screw 38 to rotate, and the two movable plates... The moving base 40 drives the collection frame 34 to move synchronously towards each other. At the same time, it drives the second driving rod 41 to slide in the first driving groove 13 of the fixed plate 42. As the collection frame 34 moves laterally, the lifting cylinder 33 drives the collection frame 34 to move upward on the fourth vertical plate 32, thereby moving the collection frame 34 to the area below the optical glass at the cutting point to collect the debris generated during the cutting process and improve environmental quality. After cutting, the third motor 39 drives the bidirectional screw 38 to move in the opposite direction, thereby driving the two collection frames 34 to move in the opposite direction and reset, preventing the collection frame 34 from obstructing the unloading of the optical glass after cutting. It also reduces the height of the collection frame 34. When it is necessary to clean up the debris, the lower limit plate 36 can be rotated from one end of the mounting rod 35, and the mounting rod 35 can be pulled out from the lifting cylinder 33 to remove the collection frame 34, which makes it convenient to pour out the debris for disposal.

[0019] The implementation principle of the optical glass cutting device according to an embodiment of the present invention is as follows: First, the optical glass to be cut is stacked in the storage frame 19. Then, the first motor 4 is started to drive the rotating rod 5 and the rotating block 6 to rotate. The rotating block 6 presses against the inner wall of the square frame 10, pushing the lifting frame 8 upward. When the lifting frame 8 moves the pressing plate 22 to the uppermost piece of glass in the storage frame 19, the cylinder 20 is started to move the pressing plate 22. The two pressing plates 22 press against the glass to be cut. Then, the first motor 4 continues to drive the rotating block 6 to rotate and press against the inner wall of the square frame 10, continuing to push the lifting frame 8 upward, thereby cutting the optical glass. The clamped optical glass is removed from the storage frame 19. At this time, the electric telescopic rod 24 is activated, which drives the moving plate 25 to move closer to the optical glass. This causes the clamping block 26 to move on the first driving rod 27. The first driving rod 27 presses against the wall of the second driving groove 28, causing the clamping block 26 to clamp the optical glass at the clamping plate 22. Then, the first motor 4 drives the rotating block 6 to press against the inner wall of one side of the square frame 10, causing the square frame 10 to move laterally within the lifting frame 8. The lifting frame 8 maintains its position and causes the clamped optical glass to move horizontally. The rotating cutting blade 15 is also used to... During the cutting of optical glass, the third motor 39 is activated to drive the bidirectional screw 38 to rotate. Two movable seats 40 simultaneously move the collection frame 34 towards each other. At the same time, the second driving rod 41 slides in the first driving groove 13 of the fixed plate 42, causing the collection frame 34 to move laterally. Simultaneously, the lifting cylinder 33 moves the collection frame 34 upwards on the fourth vertical plate 32, thus moving the collection frame 34 to below the optical glass at the cutting point to collect the debris generated during the cutting process, improving environmental quality. After cutting, the third motor 39 drives the bidirectional screw... The lever 38 moves in the opposite direction to drive the two collection frames 34 to move in the opposite direction and reset. After cutting, the rotating block 6 presses the lower inner wall of the square frame 10, pushing the lifting frame 8 to move down in the fixed frame 2, sending the cut optical glass to the stacking frame 17. The cylinder 20 and the electric telescopic rod 24 are activated to release the optical glass, thereby stacking the cut optical glass into the stacking frame 17. Finally, the rotating block 6 continues to rotate, pressing the inner wall of the other side of the square frame 10, pushing the square frame 10 to move in the lifting frame 8, thereby driving the clamping plate 22 to reset, and continuing to cut the next piece of optical glass.

[0020] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A cutting apparatus for optical glass processing, characterized in that, include: Base plate (1), a storage structure for storing glass before and after cutting is set on the base plate (1); The material handling and transfer structure is set on the front and rear sides of the base plate (1) for transferring glass before and after cutting; The clamping structure provided on the material handling and transfer structure is used to clamp the glass and drive the glass to transfer. The base plate (1) is provided with debris collection structures on both the left and right sides to collect glass debris during cutting and improve environmental quality; The cutting structure is provided on the material handling and transfer structure.

2. The cutting apparatus for optical glass processing according to claim 1, characterized in that, The material handling and transfer structure includes: Two fixed frames (2) are set on the front and rear sides of the base plate (1). Vertical grooves (7) are opened on the inner walls of the left and right sides of the fixed frames (2). A lifting frame (8) is slidably arranged in the vertical groove (7) of each fixed frame (2). A first horizontal groove (11) is opened on the inner walls of the upper and lower sides of the lifting frame (8). A square frame (10) is slidably arranged in the first horizontal groove (11) of the lifting frame (8). The base plate (1) is fastened with bolts to a first vertical plate (3) near each fixed frame (2). A first motor (4) is installed at the top of the first vertical plate (3). One end of the output shaft of the first motor (4) is connected to a rotating rod (5). The rotating rod (5) is inserted into one end of the square frame (10) and a rotating block (6) is fixedly sleeved thereon. The side of the rotating block (6) is close to the square frame (10).

3. The cutting device for optical glass processing according to claim 2, characterized in that: The cutting structure includes a mounting plate (12) connected between two fixed frames (2), a second motor (14) is mounted on the mounting plate (12), and a cutting blade (15) is mounted on one end of the output shaft of the second motor (14).

4. The cutting device for optical glass processing according to claim 1, characterized in that: The storage structure includes two sets of third vertical plates (16) connected to the bottom plate (1) near the middle. One set of the third vertical plates (16) has a stacking frame (17) installed at the top, and the other set of the third vertical plates (16) has a storage frame (19) installed at the top. The stacking frame (17) and the storage frame (19) have retrieval slots (18) in the middle of their front and rear sides.

5. The cutting device for optical glass processing according to claim 2, characterized in that: The clamping structure includes a second vertical plate (9) connected to a square frame (10), a cylinder (20) is installed at the top of the second vertical plate (9), one end of the output shaft of the cylinder (20) is connected to a fixing rod (21), a clamping plate (22) is provided at one end of the fixing rod (21), and a clamping structure is provided between the fixing rod (21) and the clamping plate (22).

6. The cutting apparatus for optical glass processing according to claim 5, characterized in that: The clamping structure includes an intermediate groove (23) on a fixed rod (21). An electric telescopic rod (24) is installed on one end of the groove wall of the intermediate groove (23). One end of the output shaft of the electric telescopic rod (24) is connected to a moving plate (25). The moving plate (25) is "H" shaped. Guide grooves (29) are provided near the four ends of the moving plate (25). A guide rod (30) is connected between the two ends of each guide groove (29). A moving block (31) is movably sleeved on the guide rod (30). A clamping block (26) is provided on the moving block (31). T-shaped strips (43) are connected to both ends of the abutment plate (22). Two first driving rods (27) are connected between the two T-shaped strips (43). A second driving groove (28) is provided on the clamping block (26). The first driving rod (27) moves through the second driving groove (28).

7. The cutting apparatus for optical glass processing according to claim 1, characterized in that: The debris collection structure includes two collection frames (34) set on the left and right sides above the base plate (1). Each collection frame (34) is equipped with a lifting cylinder (33) through an installation structure. A fourth vertical plate (32) is movably inserted into the lifting cylinder (33). The two fourth vertical plates (32) are set on the base plate (1) through a movable lifting structure.

8. The cutting apparatus for optical glass processing according to claim 7, characterized in that: The installation structure includes an installation rod (35) connected to the bottom of the collection frame (34). The installation rod (35) moves through the installation hole opened on the lifting cylinder (33). A limiting ring is fixedly sleeved on the installation rod (35). The limiting ring fits against one side of the lifting cylinder (33). One end of the installation rod (35) is screwed to a limiting plate (36). The limiting plate (36) and the installation rod (35) are provided with matching threads.

9. A cutting apparatus for optical glass processing according to claim 7, characterized in that: The movable lifting structure includes a second horizontal groove (37) on the base plate (1). A movable seat (40) is slidably provided at both ends of the second horizontal groove (37). The movable seat (40) is fixedly provided at the bottom end of the fourth vertical plate (32). A bidirectional screw (38) is rotatably inserted into the second horizontal groove (37). The two sections of the bidirectional screw (38) have opposite thread directions. A threaded groove for the bidirectional screw (38) to pass through is provided on the movable seat (40). A third motor (39) is installed in the middle of the right side of the base plate (1). One end of the output shaft of the third motor (39) is connected to the bidirectional screw (38). A second driving rod (41) is connected to the bottom end of both the front and rear ends of the lifting cylinder (33). Two sets of fixed plates (42) are provided on the base plate (1) on both sides of the second horizontal groove (37). A first driving groove (13) is provided on the fixed plate (42). One end of the second driving rod (41) is movably inserted into the corresponding first driving groove (13).

Images