Carbon dispensing machine for silica gel key production

Abstract

The utility model relates to the technical field of key production, in particular to a carbon dispensing machine for silica gel key production, which comprises a mounting rack, a cover frame, an electric track, a sliding seat, an electric push rod, a connecting plate, a pressing template, a module and a key mold I, a cover frame is arranged on the rear side of the top of the mounting frame, an electric rail is arranged in the middle of the top of the cover frame, a sliding seat is slidably arranged on the electric rail, an electric push rod is arranged at the bottom of the sliding seat, a connecting plate is arranged on the outer side of the lower portion of the electric push rod, and a mold pressing plate is slidably arranged on the connecting plate. Guide rails I are arranged on the two sides of the top of the mounting frame, a placing plate is slidably arranged between the guide rails I on the two sides, and a key mold I is arranged on the placing plate I. The electric rail drives the sliding block to move, so that the electric push rod reaches a preset position, the automation degree is high, and manual intervention is reduced; the drying of the conductive ink or the carbon dots on the silica gel keys is accelerated by starting the fan, so that the drying time is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of key production, in particular to a carbon dotting machine for producing silica gel keys. Background Art

[0002] Silicone keys are keys made of silicone rubber material. They are widely used in various electronic devices and instruments because of their softness, wear resistance, waterproofness and good touch.

[0003] Silicone keypad carbon dot treatment refers to the process of adding conductive ink or conductive carbon dots to silicone keys to make the keys conductive. This step is to enable the keys to correctly trigger signals in electronic devices. When the key is pressed, the conductive part will contact the corresponding contacts on the circuit board, thereby realizing signal transmission.

[0004] Traditional carbon dot machines used in the production of silicone keypads usually rely on natural air drying to dry the conductive ink or carbon dots on the silicone keypads. However, during the natural drying or simple blow-drying process, due to uneven wind distribution, the drying speed of different parts of the silicone keypad is inconsistent, which may cause some keys to not dry thoroughly, especially the edges and corners, which are prone to moisture, affecting the conductive performance. Utility Model Content

[0005] In order to overcome the above-mentioned shortcomings of the prior art, the utility model provides a carbonizing machine for producing silicone keypads, which can improve drying efficiency.

[0006] The technical solution of the utility model is: a carbon dot machine for producing silicone keypads, comprising a mounting frame, a cover frame, an electric track, a sliding seat, an electric push rod, a connecting plate, a pressing plate, a module, a key mold I, a placement plate I, a guide rail I, an ink cartridge, a fan, a rodless cylinder and a slider, a cover frame is provided on the top rear side of the mounting frame, an electric track is provided at the center of the top of the cover frame, a sliding seat is slidably provided on the electric track, an electric push rod is provided at the bottom of the sliding seat, a connecting plate is provided on the outer side of the lower part of the electric push rod, a pressing plate is slidably provided on the connecting plate, a module is provided at the bottom of the pressing plate, guide rails I are provided on both sides of the top of the mounting frame, a placement plate is slidably provided between the guide rails I on both sides, a key mold I is provided on the placement plate, an ink cartridge located behind the key mold I is provided at the bottom of the cover frame, fans are provided on both sides of the front side of the lower part of the cover frame, the fans on both sides are respectively located on both sides of the placement plate I, a rodless cylinder is provided on the left side of the upper part of the mounting frame, a slider is slidably provided on the rodless cylinder, and the slider is connected to the left side of the placement plate I.

[0007] Furthermore, a straight-shaped sliding groove is provided on the right side of the mounting frame.

[0008] Furthermore, the mounting frame is provided with a replacement group for replacing the placement plate I.

[0009] Furthermore, the replacement group includes: a synchronous belt, a pulley, a matching tooth plate, a screw II and a driving frame. The pulleys are symmetrically and rotatably arranged on both sides of the left side of the mounting frame. A synchronous belt is rotatably sleeved between each pulley. The synchronous belt is bent in the middle of the right front part and extends in a concave shape behind two of the pulleys in the front part. The synchronous belt is provided with staggered protrusions with stop teeth on the upper and lower sides. The matching tooth plates that mesh with the two stop teeth of the synchronous belt are staggered and movably arranged on the left side of the mounting frame. Screw II is threaded on both matching tooth plates, and driving frames are threaded on the upper parts of both screw IIs. The synchronous belts are in rotational contact with the ends of the two driving frames, and the right sides of the two driving frames are in sliding contact with the right arm surface in the mounting frame. The right side of the bottom of the placement plate I is connected to the upper driving frame.

[0010] Furthermore, the replacement group also includes: a bearing column, a movable plate, a slide plate, a guide rail II, a placement plate II and a key mold II. Guide rails II are provided on both sides of the bottom of the mounting frame, and a movable plate is slidingly provided between the guide rails II on both sides. The right side of the movable plate is connected to the driving frame at the lower part. A slide plate is provided in the middle position of the bottom of the mounting frame, and a guide groove is provided on the right side of the slide plate. The guide groove is an inverted trapezoidal shape as a whole. A slide plate is slidingly provided on the guide groove of the slide plate. Bearing columns are symmetrically and slidingly provided on both sides of the top of the movable plate. A placement plate II is commonly provided on the top of each bearing column. The bottom of the placement plate II is connected to the bottom of the slide plate, and a key mold II is provided on the top of the placement plate II.

[0011] Furthermore, limiting sliding grooves are provided on both sides of the top of the placement plate I and the placement plate II.

[0012] Furthermore, it also includes a fixing part, a screw rod I, a guide rod, an adjustment seat and an adjustment wheel. A fixing part is provided on the right rear side of the mounting frame, and a screw rod I is provided on the internal thread of the fixing part. Guide rods are provided on both sides of the rear of the fixing part. An adjustment seat is slidingly provided between the guide rods on both sides. The adjustment seat slides in the straight groove of the mounting frame, and the screw rod I thread passes through the adjustment seat. An adjustment wheel is rotatably provided on the inner left wall surface of the mounting frame on the left side of the adjustment seat, and the recessed part at the front of the synchronous belt is rotatably sleeved on the outside of the adjustment wheel.

[0013] Furthermore, it also includes guide blocks, springs and rollers. Guide blocks are slidably arranged in the limiting slide grooves of placement plate I and placement plate II, and rollers for pressing the silicone key pad are rotatably and slidably arranged between the guide blocks on both sides of placement plate I and placement plate II, and springs are arranged between the sliding connections between the upper sides of the two rollers and the guide blocks.

[0014] Furthermore, when the placement plate I is driven by the rodless cylinder to slide the sliding seat, the driving frame on the right side of the bottom is driven to move, and the screw II and the matching tooth plate threadedly connected to it will move synchronously, so that the matching tooth plate drives the synchronous belt engaged with it by the braking tooth to rotate, and the lower part of the synchronous belt drives the other matching tooth plate and the placement plate II to operate relative to each other, and slide on the guide rail II guided by the guide groove.

[0015] The utility model has the following advantages: 1. The electric track drives the slider to move, so that the electric push rod reaches the predetermined position, with a high degree of automation and reduced manual intervention; by starting the fan to accelerate the drying of the conductive ink or carbon dots on the silicone button, the drying time is shortened and the production efficiency is improved.

[0016] 2. After the rodless cylinder is started, it drives the sliding seat to move, thereby moving the driving frame on the placement plate I, realizing the automatic replacement of the placement plate; the design of the guide groove ensures the smooth sliding of the placement plate II, and the guide rail II ensures the stability of the placement plate II, making the entire replacement process smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall assembly of the utility model.

[0018] Figure 2 This is a schematic structural diagram of the cover frame and its components after being disassembled from the mounting frame.

[0019] Figure 3 This is a partial cross-sectional schematic diagram showing the lower structure of the placement plate I of the utility model after being cut open.

[0020] Figure 4 This is a schematic structural diagram showing the right side perspective after the mounting frame of the utility model is partially disassembled.

[0021] Figure 5 This is a schematic structural diagram of the guide block, spring, roller and other components of the utility model.

[0022] Figure 6 This is a structural diagram of the pulley, matching tooth plate, regulating wheel and other components of the utility model.

[0023] Figure 7 This is a structural diagram of the fixing part, screw rod I and adjustment seat of the utility model.

[0024] Figure 8 This is a structural diagram of the synchronous belt, pulley, fixing parts and other components of the utility model.

[0025] In the accompanying drawings: 1_mounting frame, 2_cover frame, 3_electric track, 4_sliding seat, 5_electric push rod, 51_connecting plate, 6_pressing plate, 61_module, 7_key mold I, 71_key mold II, 8_placing plate I, 81_placing plate II, 9_guide rail I, 91_guide rail II, 10_ink cartridge, 11_blower, 12_rodless cylinder, 13_slider, 14_synchronous belt, 15_pulley, 151_fixing part, 152_screw I, 153_guide rod, 154_adjusting seat, 155_adjusting wheel, 156_matching tooth plate, 157_screw II, 158_driving frame, 16_bearing column, 17_moving plate, 18_sliding plate, 19_slide plate, 20_guide block, 21_spring, 22_roller. DETAILED DESCRIPTION

[0026] Reference herein to an embodiment means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present invention. The appearance of such a phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0027] Example: A carbon dot machine for producing silicone keypads, such as Figure 1-Figure 7As shown, it includes a mounting frame 1, a cover frame 2, an electric track 3, a sliding seat 4, an electric push rod 5, a connecting plate 51, a pressing plate 6, a module 61, a key mold Ⅰ7, a placement plate Ⅰ8, a guide rail Ⅰ9, an ink cartridge 10, a fan 11, a rodless cylinder 12 and a slider 13. The mounting frame 1 serves as the basic structure of the entire equipment, supporting all other components and providing a stable working platform. A straight-shaped slide groove is provided on the right side of the mounting frame 1. A replacement group for replacing the placement plate Ⅰ8 is also provided on the mounting frame 1. A cover frame 2 is provided on the top rear side of the mounting frame 1 to protect the internal mechanical components from external The electric rail 3 is set in the center of the top of the cover frame 2 to allow the sliding seat 4 to move along its length to provide horizontal positioning for subsequent actions. The sliding seat 4 is slidingly set on the electric rail 3. It moves on the electric rail 3 and carries the electric push rod 5 and its accessories to the required position. The electric push rod 5 is set at the bottom of the sliding seat 4. It controls the lifting and lowering of the connecting plate 51 through vertical movement, and then controls the descent and rise of the pressing plate 6. The outer side of the lower part of the electric push rod 5 is provided with a connecting plate 51, and the connecting plate 51 is slidingly provided with a pressing plate 6. Template 6 directly contacts the silicone key, and the carbonization operation is performed by module 61. Module 61 is provided at the bottom of the pressing template 6. Guide rails Ⅰ9 are provided on both sides of the top of the mounting frame 1 to guide the movement of the placement plate Ⅰ8 to ensure that it can smoothly enter and exit the working area. A placement plate Ⅰ8 is slidingly provided between the guide rails Ⅰ9 on both sides, carrying the key mold Ⅰ7, which can move on the guide rails Ⅰ9. The placement plate Ⅰ8 is provided with a key mold Ⅰ7 to fix the position of the silicone key to ensure the consistency and accuracy of each carbonization operation. An ink cartridge 10 is provided at the bottom of the cover frame 2, located behind the key mold Ⅰ7, for storage. Conductive ink or carbon dots, supply carbon dot materials, fans 11 are set on both sides of the lower front side of the cover frame 2 to speed up the drying speed of the conductive ink or carbon dots and improve work efficiency. The fans 11 on both sides are respectively located on both sides of the placement plate Ⅰ8, and a rodless cylinder 12 is set on the left side of the upper part of the mounting frame 1 to push the slider 13 to move in a straight line, indirectly controlling the lateral movement of the placement plate Ⅰ8. A slider 13 is slidingly set on the rodless cylinder 12, which moves under the action of the rodless cylinder 12 and is connected to the placement plate Ⅰ8 to realize automatic replacement of the placement plate Ⅰ8. The slider 13 is connected to the left side of the placement plate Ⅰ8.

[0028] like Figure 3 、 Figure 6 and Figure 8As shown, the replacement group includes: a synchronous belt 14, a pulley 15, a matching tooth plate 156, a screw II 157 and a driving frame 158. The pulleys 15 are symmetrically and rotatably arranged on both sides of the left side of the mounting frame 1. A synchronous belt 14 is rotatably sleeved between each pulley 15. The center of the right front part of the synchronous belt 14 is bent and extends in a concave shape behind the two pulleys 15 in the front. The upper and lower sides of the synchronous belt 14 are staggered and protruded with stop teeth. The left side of the mounting frame 1 is staggered and movable with teeth meshing with the synchronous belt 1 The two stop teeth are matched with tooth plates 156. Screw rods II 157 are threadedly provided on the two matching tooth plates 156. A driving frame 158 is threadedly provided on the upper portion of the two screw rods II 157. The synchronous belt 14 is in rotational contact with the ends of the two driving frames 158. The right sides of the two driving frames 158 are in sliding contact with the right arm surface inside the mounting frame 1. The right side of the bottom of the placement plate I 8 is connected to the upper driving frame 158. The alternating switching between the placement plate I 8 and the placement plate II 81 is achieved through the cooperation of the stop teeth and the synchronous belt 14.

[0029] like Figure 2 and Figure 3 As shown, the replacement group also includes: a bearing column 16, a movable plate 17, a slide plate 19, a guide rail Ⅱ 91, a placement plate Ⅱ 81 and a key mold Ⅱ 71. Guide rails Ⅱ 91 are provided on both sides of the bottom of the mounting frame 1. A movable plate 17 is slidably provided between the guide rails Ⅱ 91 on both sides. The right side of the movable plate 17 is connected to the lower driving frame 158. A slide plate 19 is provided at the middle position of the bottom of the mounting frame 1. A guide groove is provided on the right side of the slide plate 19. The guide groove is in an inverted trapezoidal shape as a whole. A slide plate 18 is slidably provided on the guide groove of the slide plate 19. The bearing columns 16 are symmetrically and slidably provided on both sides of the top of the movable plate 17. A placement plate is provided on the top of each bearing column 16. Ⅱ81, the bottom of the placement plate Ⅱ81 is connected to the bottom of the sliding plate 18, and a key mold Ⅱ71 is provided on the top of the placement plate Ⅱ81. When the placement plate Ⅰ8 drives the sliding seat 4 to slide through the rodless cylinder 12, it drives the driving frame 158 on the right side of the bottom to move, and the screw Ⅱ157 and the matching tooth plate 156 threadedly connected to it will move synchronously, so that the matching tooth plate 156 drives the synchronous belt 14 engaged with the braking tooth to rotate, and the lower part of the synchronous belt 14 drives the other matching tooth plate 156 and the placement plate Ⅱ81 to operate relative to each other, and slide on the guide rail Ⅱ91 guided by the guide groove. Limiting slide grooves are provided on both sides of the top of the placement plate Ⅰ8 and the placement plate Ⅱ81.

[0030] like Figure 6-Figure 8As shown, it also includes a fixing part 151, a screw rod II 152, a guide rod 153, an adjusting seat 154 and an adjusting wheel 155. A fixing part 151 is provided on the right rear side of the mounting frame 1, and a screw rod I 152 is provided on the internal thread of the fixing part 151. Guide rods 153 are provided on both sides of the rear part of the fixing part 151. An adjusting seat 154 is slidingly provided between the guide rods 153 on both sides. The adjusting seat 154 slides in the straight groove of the mounting frame 1, and the screw rod I 152 thread penetrates the adjusting seat 154. The left side of the adjusting seat 154 is located on the inner left wall surface of the mounting frame 1 and is rotatably provided with an adjusting wheel 155. The recessed part at the front of the synchronous belt 14 is rotatably sleeved on the outside of the adjusting wheel 155. The tension of the synchronous belt 14 can be adjusted by cooperating with the above components to maintain its normal operation.

[0031] like Figure 5 As shown, it also includes a guide block 20, a spring 21 and a roller 22. The guide blocks 20 are slidably set in the limiting slide grooves of the placement plate I8 and the placement plate II81, and the rollers 22 for pressing the silicone key pad are rotated and slidably set between the guide blocks 20 on both sides of the placement plate I8 and the placement plate II81. Springs 21 are set between the sliding connections between the upper sides of the two rollers 22 and the guide blocks 20. The combination of the above components ensures that the silicone key is subjected to uniform pressure during the carbonization process, thereby improving the quality of carbonization.

[0032] Before carbonization, first place the silicone key in the key mold to ensure that the key position is correct, place the placement plate on the guide rail Ⅰ 9, and fix the key mold, start the electric track 3, drive the sliding seat 4 to move, so that the electric push rod 5 reaches the predetermined position, start the electric push rod 5, drive the connecting plate 51 to descend, so that the pressing plate 6 contacts the silicone key, and the module 61 on the pressing plate 6 carbonizes the silicone key. The conductive ink or carbon dots in the ink cartridge 10 are imprinted on the key, start the fan 11, and the fan 11 blows air to accelerate the drying of the conductive ink or carbon dots on the silicone key. After drying is completed, the electric push rod 5 rises, drives the pressing plate 6 to separate from the silicone key, and the rodless cylinder 12 starts, driving the sliding seat 4 to move, thereby moving the driving frame 158 on the placement plate Ⅰ 8, and the screw II threadedly connected to the driving frame 158 157 and the matching tooth plate 156 move synchronously, driving the synchronous belt 14 to rotate. The lower part of the synchronous belt 14 drives another matching tooth plate 156 and the placement plate II 81 to operate relative to each other. The placement plate II 81 slides on the guide rail II 91, guided by the guide groove of the slide plate 19, to achieve the movement of the placement plate II 81. The guide groove ensures the smooth sliding of the placement plate II 81, and the guide rail II 91 ensures the stability of the placement plate II 81. After the placement plate II 81 on the moving plate 17 reaches the predetermined position, the above-mentioned carbonization process is repeated. The fixing part 151, the screw I 152, the guide rod 153 and the adjusting seat 154 are used to adjust the position of the adjusting wheel 155, thereby realizing the tightness adjustment of the synchronous belt 14. The guide block 20, the spring 21 and the roller 22 are used to apply uniform pressure to the silicone button to ensure the carbonization effect.

[0033] The above is a detailed introduction to the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for those skilled in the art, based on the idea of ​​the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A carbon dot machine for producing silicone keypads, characterized in that: The invention comprises a mounting frame (1), a cover frame (2), an electric track (3), a sliding seat (4), an electric push rod (5), a connecting plate (51), a pressing plate (6), a module (61), a key mold I (7), a placement plate I (8), a guide rail I (9), an ink cartridge (10), a fan (11), a rodless cylinder (12) and a slider (13). The mounting frame (1) is provided with a cover frame (2) at the top rear side, the cover frame (2) is provided with an electric track (3) at the top center position, the electric track (3) is provided with a sliding seat (4) for sliding, the sliding seat (4) is provided with an electric push rod (5) at the bottom, the electric push rod (5) is provided with a connecting plate (51) at the outer side of the lower part, and the pressing plate (6) is provided with a connecting plate (51) for sliding. ), a module (61) is provided at the bottom of the pressing plate (6), guide rails I (9) are provided on both sides of the top of the mounting frame (1), a placement plate I (8) is slidably provided between the guide rails I (9) on both sides, a key mold I (7) is provided on the placement plate I (8), an ink cartridge (10) located behind the key mold I (7) is provided at the bottom of the inner bottom of the cover frame (2), fans (11) are provided on both sides of the front side of the lower part of the cover frame (2), and the fans (11) on both sides are respectively located on both sides of the placement plate I (8), a rodless cylinder (12) is provided on the left side of the upper part of the mounting frame (1), a slider (13) is slidably provided on the rodless cylinder (12), and the slider (13) is connected to the left side of the placement plate I (8).

2. A carbon dot machine for producing silicone keypads according to claim 1, characterized in that: A straight-shaped sliding groove is provided on the right side of the mounting frame (1).

3. A carbon dot machine for producing silicone keypads according to claim 2, characterized in that: The mounting frame (1) is also provided with a replacement group for replacing the placement plate I (8).

4. A carbon dot machine for producing silicone keypads according to claim 3, characterized in that: The replacement group includes: a synchronous belt (14), a pulley (15), a matching tooth plate (156), a screw II (157) and a driving frame (158). The pulleys (15) are symmetrically and rotatably arranged on both sides of the left side of the mounting frame (1). A synchronous belt (14) is rotatably sleeved between each of the pulleys (15). The synchronous belt (14) is bent in the middle of the right front part and extends in a concave shape to the rear of two of the pulleys (15) in the front part. The synchronous belt (14) is staggered and protruded with stop teeth on the upper and lower sides. The left side of the mounting frame (1) is The side staggered movable member is provided with a matching tooth plate (156) that engages with the two stop teeth of the synchronous belt (14), and a screw rod II (157) is threadedly provided on the two matching tooth plates (156). A driving frame (158) is threadedly provided on the upper part of the two screw rods II (157). The synchronous belt (14) is in rotational contact with the ends of the two driving frames (158), and the right sides of the two driving frames (158) are in sliding contact with the right arm surface inside the mounting frame (1). The right side of the bottom of the placement plate I (8) is connected to the upper driving frame (158).

5. The carbonizing machine for producing silicone keypads according to claim 4, characterized in that: The replacement group further comprises: a bearing column (16), a movable plate (17), a chute plate (19), a guide rail II (91), a placement plate II (81) and a key mold II (71). The guide rails II (91) are provided on both sides of the bottom of the mounting frame (1). A movable plate (17) is provided between the guide rails II (91) on both sides for sliding. The right side of the movable plate (17) is connected to the driving frame (158) at the bottom. A chute plate (19) is provided in the middle of the bottom of the mounting frame (1). A guide groove is provided on the right side of the slide plate (19), and the guide groove is in an inverted trapezoidal shape as a whole. A sliding plate (18) is slidably provided on the guide groove of the slide plate (19). Supporting columns (16) are symmetrically and slidably provided on both sides of the top of the movable plate (17). A placement plate II (81) is commonly provided on the top of each supporting column (16). The bottom of the placement plate II (81) is connected to the bottom of the slide plate (18), and a key mold II (71) is provided on the top of the placement plate II (81).

6. The carbonizing machine for producing silicone keypads according to claim 5, characterized in that: Limiting sliding grooves are provided on both sides of the top of the placement plate I (8) and the placement plate II (81).

7. The carbonizing machine for producing silicone keypads according to claim 6, characterized in that: The utility model also includes a fixing member (151), a screw rod I (152), a guide rod (153), an adjustment seat (154) and an adjustment wheel (155), wherein the fixing member (151) is provided on the right rear side of the mounting frame (1), the screw rod I (152) is provided with an internal thread of the fixing member (151), guide rods (153) are provided on both sides of the rear part of the fixing member (151), an adjustment seat (154) is slidably provided between the guide rods (153) on both sides, the adjustment seat (154) slides in the straight groove of the mounting frame (1), the screw rod I (152) is threadedly passed through the adjustment seat (154), an adjustment wheel (155) is rotatably provided on the left side of the adjustment seat (154) and located on the inner left wall surface of the mounting frame (1), and the concave portion of the front part of the synchronous belt (14) is rotatably sleeved on the outside of the adjustment wheel (155).

8. The carbonizing machine for producing silicone keypads according to claim 7, characterized in that: It also includes a guide block (20), a spring (21) and a roller (22), wherein the guide block (20) is slidably arranged in the limiting slide groove of the placement plate I (8) and the placement plate II (81), and a roller (22) for pressing the silicone key pad is rotated and slidably arranged between the guide blocks (20) on both sides of the placement plate I (8) and the placement plate II (81), and a spring (21) is arranged between the sliding connection points between the two sides of the upper part of the roller (22) and the guide block (20).

9. The carbonizing machine for producing silicone keypads according to claim 8, characterized in that: When the placement plate I (8) is driven by the rodless cylinder (12) to slide the sliding seat (4), the driving frame (158) on the bottom right side is driven to move, and the screw rod II (157) and the matching tooth plate (156) threadedly connected thereto are moved synchronously, so that the matching tooth plate (156) drives the synchronous belt (14) engaged with the stopping teeth to rotate, and the lower part of the synchronous belt (14) drives the other matching tooth plate (156) and the placement plate II (81) to operate relative to each other, and slide on the guide rail II (91) guided by the guide groove.

Images