Safety production discharging mechanism for photovoltaic module accessory production

Abstract

The invention relates to the technical field of photovoltaic module production blanking, in particular to a safety production blanking mechanism for photovoltaic module accessory production, which is characterized in that a second guide plate is arranged at one end of a guide plate, a moving plate is arranged at the bottom of the second guide plate, a moving groove is formed in the end face of the moving plate, a fixed plate is arranged on the side face of an auxiliary plate, and a positioning ring is sleeved with the fixed plate; guide plates are arranged at one ends of the auxiliary plates; the device has the beneficial effects that firstly, a positioning ring can be drawn out of a positioning opening, then, an auxiliary plate can be subjected to displacement stretching and retracting, positioning can be conducted through the positioning ring after the auxiliary plate moves to a proper position, and then the moving direction of a sliding-down photovoltaic support accessory can be changed in cooperation with a guide plate arranged at one end of the auxiliary plate in the discharging process; the rotating radian of the guide plate can be changed by impacting the guide plate at different angles when the photovoltaic support accessory slides down, so that the photovoltaic support accessory can conveniently slide down to different positions in the storage frame.

Description

Technical Field

[0001] The invention relates to the field of photovoltaic module production blanking, and in particular to a safe production blanking mechanism for photovoltaic module accessory production. Background Art

[0002] With the increasing shortage of energy, solar energy, as a renewable and clean energy, is being used more and more widely. In solar energy collection, solar panels are generally used to collect and convert solar energy.

[0003] In the prior art, photovoltaic bracket accessories are used during the production and installation of photovoltaic modules. The photovoltaic bracket is mainly composed of a loading, leveling and unwinding machine, an electronic control system, a servo feeder, a pneumatic punch and a stamping die. When the pneumatic punch is producing photovoltaic bracket accessories, in order to facilitate the unloading of materials, the guide plate is used to pull the unloading, so that the produced photovoltaic bracket accessories can be conveniently sent into the storage frame for collection.

[0004] However, the length of the traditional guide plate is fixed. In addition, when the guide plate is used for unloading, the photovoltaic bracket accessories will be piled up in one place, which may cause the photovoltaic bracket accessories to pile up quickly and high. When the photovoltaic bracket accessories are piled up high, the photovoltaic bracket accessories will fall out of the storage frame. For this reason, the present invention proposes a safe production unloading mechanism for the production of photovoltaic module accessories to solve the above-mentioned technical problems. Summary of the invention

[0005] The object of the present invention is to provide a safe production unloading mechanism for the production of photovoltaic module accessories to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a safe production blanking mechanism for the production of photovoltaic module accessories, the safe production blanking mechanism for the production of photovoltaic module accessories comprising: a pneumatic punch body, a processing table is arranged on the surface of the pneumatic punch body;

[0007] A material guide plate, a material guide plate 2 is arranged at one end of the material guide plate, a movable plate is arranged at the bottom of the material guide plate 2, a movable groove is arranged at the end surface of the movable plate, and a positioning opening is arranged at the side surface of the movable groove;

[0008] An auxiliary plate, a fixing plate is arranged on the side of the auxiliary plate, a positioning ring is sleeved inside the fixing plate, and a guide plate is arranged at one end of the auxiliary plate.

[0009] Preferably, a mounting plate is provided on the side of the processing table, and a positioning bolt is screwed into the mounting plate. The positioning bolt can be screwed into the body of the pneumatic punch press, and the processing table is fixed to the surface of the pneumatic punch press body by the positioning bolt. A mounting bracket is fixedly connected to the bottom of the guide plate, and one end of the mounting bracket can be fixedly connected to the side of the pneumatic punch press body by bolts. One end of the guide plate is located on the side of the processing table.

[0010] Preferably, a traction plate is provided on the side of the guide plate, and two groups of traction plates are provided. The two groups of traction plates are symmetrically distributed about the guide plate. The guide plate and the second guide plate are hinged to each other through a hinge. A corrugated plate is provided between the guide plate and the second guide plate. The corrugated plate can be compressed and folded, and the two ends of the corrugated plate are respectively fixedly connected to the end faces of the guide plate and the second guide plate.

[0011] Preferably, a bottom plate is provided on the side of the second material guide plate, a movable screw is provided on the surface of the bottom plate, a rotating plate is provided on the side of the material guide plate, the bottom plate and the rotating plate are overall an arc-shaped plate structure, a movable opening is opened on the surface of the rotating plate, the movable screw is inserted into the movable opening, and the movable screw can be displaced in the movable opening.

[0012] Preferably, the surface of the movable screw is threadedly connected to a limiting nut, a damping ring is provided at the bottom of the limiting nut, a damping pad is provided at the bottom of the damping ring, and the damping ring is fixedly connected to the bottom of the limiting nut. The rotating plate can be fixed by tightening the limiting nut to make the damping pad in close contact with the surface of the rotating plate.

[0013] Preferably, the movable plate is fixedly connected to the bottom of the guide plate 2, and the movable plate as a whole is a square plate-shaped structure. A sliding groove is opened on the side of the movable groove, and there are two groups of sliding grooves. The two groups of sliding grooves are symmetrically distributed about the movable groove. There are multiple groups of positioning ports, and the multiple groups of positioning ports are equidistantly linearly arranged about the side of the movable groove. The sliding groove is a square plate-shaped structure.

[0014] Preferably, the auxiliary plate is inserted into the movable groove, the auxiliary plate can be displaced in the movable groove, the fixed plate as a whole is an "L"-shaped plate structure, the fixed plate can slide in the slide groove, a fixed opening is opened on the side of the fixed plate, the positioning ring can pass through the fixed opening and the positioning opening at the same time, a rubber pad is provided on the outer ring surface of the positioning ring, and the rubber pad is glued to the outer ring surface of the positioning ring.

[0015] Preferably, a support plate is provided on the side of the auxiliary plate, and two groups of support plates are provided. The two groups of support plates are symmetrically distributed about the auxiliary plate, one end of the support plate is connected to a baffle plate by a second hinge, a limiting plate is provided on the side of the support plate, a through hole is provided on the surface of the limiting plate, a second limiting plate is provided on the side of the baffle plate, a fixing rod is inserted into the second limiting plate, and one end of the fixing rod is also inserted into the through hole provided on the surface of the limiting plate, and when the auxiliary plate moves in the moving groove, the baffle plate will not conflict with the two end faces of the guide plate.

[0016] Preferably, a vertical plate is provided on the surface of the baffle, a pin is inserted into the side of the vertical plate, one end of the guide plate is sleeved on the pin, the pin can be taken out of the vertical plate, the guide plate can rotate around the pin, and a sound-absorbing pad is provided on the inner side of the guide plate, which is glued to the inner side of the guide plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The safe production unloading mechanism for the production of photovoltaic component accessories proposed in the present invention can firstly utilize the cooperation of the guide plate and the guide plate 2 to conveniently pull and unload the photovoltaic bracket accessories when in use. When it is necessary to feed storage frames of different heights, the positioning ring can be firstly pulled out from the positioning port, and then the auxiliary plate can be displaced and retracted. When it is moved to a suitable position, the positioning ring can be used for positioning. Then, when unloading, the guide plate set at one end of the auxiliary plate can be used to change the moving direction of the sliding photovoltaic bracket accessories. The guide plate can be impacted at different angles when the photovoltaic bracket accessories slide down, thereby changing the rotation arc of the guide plate, thereby facilitating the photovoltaic bracket accessories to slide to different positions in the storage frame, thereby avoiding the problem of the photovoltaic bracket accessories always falling at the same position. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the bottom structure of the structure of the present invention;

[0021] Figure 3 It is a side view of the structure of the present invention;

[0022] Figure 4 for Figure 3 The enlarged structural diagram at A in the middle;

[0023] Figure 5 It is a side view of the structure of the present invention;

[0024] Figure 6 It is a schematic diagram of the structure of the guide plate and the second guide plate of the present invention;

[0025] Figure 7 for Figure 6 The enlarged structural diagram at B in the middle;

[0026] Figure 8 This is a schematic diagram of the structure of the guide plate and the bottom structure of the second guide plate of the present invention;

[0027] Fig. 9 This is a schematic diagram of the structure of the limit nut of the present invention;

[0028] Fig.10 This is a schematic diagram of the structure of the present invention after a group of baffles are removed;

[0029] Fig.11 for Fig.10 Enlarged structural diagram at point C in the middle.

[0030] In the figure: 1. pneumatic punch body; 2. processing table; 3. guide plate; 4. guide plate 2; 5. moving plate; 6. moving groove; 8. positioning port; 9. auxiliary plate; 10. fixed plate; 11. positioning ring; 12. guide plate; 13. positioning bolt; 14. mounting frame; 15. traction plate; 16. hinge; 17. corrugated plate;

[0031] 18. Bottom plate; 19. Moving screw; 20. Rotating plate; 21. Moving port; 22. Limiting nut; 23. Damping ring; 24. Damping pad; 25. Slide; 26. Fixed port; 27. Rubber pad; 28. Support plate;

[0032] 29. Second hinge; 30. Baffle; 31. Limiting plate; 32. Second limiting plate; 33. Fixing rod; 34. Vertical plate; 35. Pin shaft; 36. Noise-absorbing pad. DETAILED DESCRIPTION

[0033] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example 1: Please refer to Figure 1-Figure 11 The present invention provides a technical solution: a safe production blanking mechanism for the production of photovoltaic module accessories, the safe production blanking mechanism for the production of photovoltaic module accessories comprises: a pneumatic punch body 1, a processing table 2 is arranged on the surface of the pneumatic punch body 1;

[0035] A material guide plate 3, a material guide plate 2 4 is arranged at one end of the material guide plate 3, a movable plate 5 is arranged at the bottom of the material guide plate 2 4, a movable groove 6 is arranged at the end surface of the movable plate 5, and a positioning opening 8 is arranged at the side surface of the movable groove 6;

[0036] Auxiliary plate 9, a fixing plate 10 is arranged on the side of the auxiliary plate 9, a positioning ring 11 is sleeved inside the fixing plate 10, and a guide plate 12 is arranged at one end of the auxiliary plate 9;

[0037] First, the cooperation of the guide plate 3 and the guide plate 2 4 can be used to conveniently pull and unload the photovoltaic bracket accessories. When it is necessary to feed the storage frames of different heights, the positioning ring 11 can be first pulled out from the positioning port 8, and then the auxiliary plate 9 can be displaced and retracted. When it is moved to the appropriate position, the positioning ring 11 can be used for positioning. Then, when unloading, the guide plate 12 set at one end of the auxiliary plate 9 can be used to change the moving direction of the sliding photovoltaic bracket accessories. When the photovoltaic bracket accessories slide down, the impact of the guide plate at different angles can be used to change the rotation arc of the guide plate 12, thereby facilitating the photovoltaic bracket accessories to slide to different positions in the storage frame, thereby avoiding the problem of the photovoltaic bracket accessories always falling at the same position.

[0038] Embodiment 2: On the basis of embodiment 1, in order to facilitate the unloading of production accessories of photovoltaic modules, a guide plate 3 and a guide plate 2 4 are provided, a mounting plate is provided on the side of the processing table 2, a positioning bolt 13 is screwed in the mounting plate, and the positioning bolt 13 can be screwed into the pneumatic punch body 1, and the processing table 2 is fixed to the surface of the pneumatic punch body 1 by the positioning bolt 13, and a mounting frame 14 is fixedly connected to the bottom of the guide plate 3, and one end of the mounting frame 14 can be fixedly connected to the side of the pneumatic punch body 1 by bolts, and one end of the guide plate 3 is located on the side of the processing table 2, and a traction plate 15 is provided on the side of the guide plate 3. The traction plate 15 is provided in two groups, and the two groups of traction plates 15 are symmetrically distributed about the guide plate 3. The guide plate 3 and the guide plate 2 4 are hinged to each other by a hinge 16, and a corrugated plate 17 is provided between the guide plate 3 and the guide plate 2 4, and the corrugated plate 17 can be compressed and folded, and the two ends of the corrugated plate 17 are respectively fixedly connected to the end faces of the guide plate 3 and the guide plate 2 4;

[0039] First, when in use, the raw materials are transported to the surface of the processing table 2 by means of the feeding equipment, and then the pneumatic punch body 1 can be started to process the raw materials. After processing, the feeding equipment can continue to push so that the processed accessories of the photovoltaic components can be sent into the storage frame by the cooperation of the guide plate 3, the guide plate 2 4 and the auxiliary plate 9 for convenient collection. The staff does not need to place the accessories in the storage frame one by one. The setting of the traction plate 15 also facilitates the delivery of the accessories of the photovoltaic components onto the guide plate 3.

[0040] In order to facilitate changing the angle of material discharge, a bottom plate 18 and a rotating plate 20 are provided. A bottom plate 18 is provided on the side of the guide plate 24, a movable screw 19 is provided on the surface of the bottom plate 18, and a rotating plate 20 is provided on the side of the guide plate 3. The bottom plate 18 and the rotating plate 20 are overall in an arc-shaped plate structure. A movable opening 21 is provided on the surface of the rotating plate 20, and the movable screw 19 is inserted into the movable opening 21. The movable screw 19 can be displaced in the movable opening 21. A limiting nut 22 is screwed on the surface of the movable screw 19, and a damping ring 23 is provided at the bottom of the limiting nut 22. A damping pad 24 is provided at the bottom of the damping ring 23. The damping ring 23 is fixedly connected to the bottom of the limiting nut 22. The damping pad 24 can be fixed to the rotating plate 20 by tightening the limiting nut 22 so as to make the damping pad 24 closely contact with the surface of the rotating plate 20;

[0041] When it is necessary to change the feeding angle during use, the limiting nut 22 can be loosened first so that the guide plate 24 can be rotated with the help of the hinge 16, and then the corrugated plate 17 can be unfolded to facilitate the accessories of the photovoltaic module to slide from the guide plate 3 to the guide plate 24. After rotating to a suitable angle, the limiting nut 22 can be tightened so that the damping ring 23 provided at the bottom of the limiting nut 22 cooperates with the damping pad 24 to make close contact with the rotating plate 20, so that the guide plate 24 after the rotation angle can be fixed, so that the guide plate 24 after the rotation angle can be used to change the direction of feeding the accessories of the photovoltaic module, so as to facilitate the accessories of the photovoltaic module to be sent to another storage frame, thereby avoiding the problem of staff moving the storage frame full of heavy accessories.

[0042] Embodiment 3: On the basis of Embodiment 2, in order to facilitate the unloading of accessories, an auxiliary plate 9 and a guide plate 12 are provided, a support plate 28 is provided on the side of the auxiliary plate 9, two groups of support plates 28 are provided, and the two groups of support plates 28 are symmetrically distributed about the auxiliary plate 9, one end of the support plate 28 is connected to a baffle plate 30 by a second hinge 29, a limit plate 31 is provided on the side of the support plate 28, a through hole is opened on the surface of the limit plate 31, a second limit plate 32 is provided on the side of the baffle plate 30, and a fixing rod 33 is inserted into the second limit plate 32 , one end of the fixing rod 33 is also inserted into the through hole opened on the surface of the limiting plate 31, and the baffle plate 30 will not conflict with the end surface of the guide plate 24 when the auxiliary plate 9 moves in the moving groove 6. A vertical plate 34 is provided on the surface of the baffle plate 30, and a pin 35 is inserted into the side of the vertical plate 34. One end of the guide plate 12 is sleeved on the pin 35, and the pin 35 can be taken out of the vertical plate 34. The guide plate 12 can rotate around the pin 35. A muffler pad 36 is provided on the inner side of the guide plate 12, and the muffler pad 36 is glued to the inner side of the guide plate 12;

[0043] When in use, the auxiliary plate 9 can be set to increase the length of the material discharge, so that the accessories of the photovoltaic module can be slowly dropped into the storage frame. When the accessories slide down the guide plate 3, the guide plate 24 and the auxiliary plate 9, the accessories can push the guide plate 12 open through the impact of the fall. The setting of the silencer pad 36 can reduce the noise problem when the accessories contact the guide plate 12 to avoid affecting the surrounding environment, so that the accessories can fall into the storage frame. Because the accessories will rotate during the sliding process, the accessories will push the guide plate 12 with different parts. When the tip of the accessory slides and impacts the guide plate 12, it will push the guide plate 12 farther, so that the rotation angle of the guide plate 12 is larger, so that the accessories can fall into different positions in the storage frame. The setting of the baffle 30 also prevents the accessories from sliding off the side of the auxiliary plate 9.

[0044] When the guide plate 12 is not needed, the pin shaft 35 can be pulled out so that the guide plate 12 can be removed. When in use, when the fixing rod 33 is pulled out from the limit plate 31 and the second limit plate 32, the two sets of baffles 30 can be unfolded with the help of the setting of the second hinge 29 so that the baffle 30 is parallel to the auxiliary plate 9, so that the accessories can be unloaded to both sides after sliding onto the auxiliary plate 9, and the baffle 30 can be fixed by inserting the fixing rod 33 into the limit plate 31 and the second limit plate 32.

[0045] In order to facilitate the adaptation of storage frames of different sizes, a movable plate 5 is provided, the movable plate 5 is fixedly connected to the bottom of the guide plate 24, the movable plate 5 is in a square plate-like structure as a whole, a slide groove 25 is provided on the side of the movable groove 6, and two groups of slide grooves 25 are provided, and the two groups of slide grooves 25 are symmetrically distributed about the movable groove 6, and multiple groups of positioning ports 8 are provided, and the multiple groups of positioning ports 8 are equidistantly arranged linearly about the side of the movable groove 6, the slide groove 25 is in a square plate-like structure, the auxiliary plate 9 is inserted into the movable groove 6, and the auxiliary plate 9 can be displaced in the movable groove 6, the fixed plate 10 is in an "L"-shaped plate-like structure as a whole, the fixed plate 10 can slide in the slide groove 25, and a fixed port 26 is provided on the side of the fixed plate 10, and the positioning ring 11 can pass through the fixed port 26 and the positioning port 8 at the same time, and the outer ring surface of the positioning ring 11 is provided with a rubber pad 27, and the rubber pad 27 is glued to the outer ring surface of the positioning ring 11;

[0046] During use, when it is necessary to unload accessories into storage frames at different heights, the positioning ring 11 can be first pulled out from the fixing port 26 and the positioning port 8, and then the auxiliary plate 9 can be displaced in the movable groove 6. After moving to a suitable position, the positioning ring 11 can be inserted into the fixing port 26 and the positioning port 8 for fixation. The rubber pad 27 arranged on the surface of the positioning ring 11 can increase the friction between the positioning ring 11 and the surface of the fixing port 26 and the positioning port 8 to prevent the positioning ring 11 from detaching from the fixing port 26 and the positioning port 8.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safe production unloading mechanism for photovoltaic module accessories production, characterized by: The safe production blanking mechanism for photovoltaic module parts production comprises: a pneumatic punch body (1), a processing table (2) being arranged on the surface of the pneumatic punch body (1); A material guide plate (3), a material guide plate 2 (4) is arranged at one end of the material guide plate (3), a movable plate (5) is arranged at the bottom of the material guide plate 2 (4), a movable groove (6) is arranged on the end surface of the movable plate (5), and a positioning opening (8) is arranged on the side surface of the movable groove (6); An auxiliary plate (9) is provided with a fixing plate (10) on the side of the auxiliary plate (9), a positioning ring (11) is sleeved inside the fixing plate (10), and a guide plate (12) is provided at one end of the auxiliary plate (9).

2. A safe production unloading mechanism for photovoltaic module accessories production according to claim 1, characterized in that: The processing table (2) is provided with a mounting plate on the side thereof, and a positioning bolt (13) is screwed into the mounting plate. The positioning bolt (13) can be screwed into the pneumatic punch body (1). The processing table (2) is fixed to the surface of the pneumatic punch body (1) by means of the positioning bolt (13). The bottom of the guide plate (3) is fixedly connected to a mounting frame (14). One end of the mounting frame (14) can be fixedly connected to the side of the pneumatic punch body (1) by means of bolts. One end of the guide plate (3) is located on the side of the processing table (2).

3. A safe production unloading mechanism for photovoltaic module accessories production according to claim 1, characterized in that: The guide plate (3) is provided with a traction plate (15) on the side thereof. The traction plates (15) are provided in two groups. The two groups of traction plates (15) are symmetrically distributed about the guide plate (3). The guide plate (3) and the second guide plate (4) are hinged to each other through a hinge (16). A corrugated plate (17) is provided between the guide plate (3) and the second guide plate (4). The corrugated plate (17) can be compressed and folded. The two ends of the corrugated plate (17) are respectively fixedly connected to the end faces of the guide plate (3) and the second guide plate (4).

4. A safe production unloading mechanism for photovoltaic module accessories production according to claim 1, characterized in that: A bottom plate (18) is arranged on the side of the guide plate 2 (4), a movable screw rod (19) is arranged on the surface of the bottom plate (18), a rotating plate (20) is arranged on the side of the guide plate (3), the bottom plate (18) and the rotating plate (20) are integrally formed into an arc-shaped plate structure, a movable opening (21) is opened on the surface of the rotating plate (20), the movable screw rod (19) is inserted into the movable opening (21), and the movable screw rod (19) can be displaced in the movable opening (21).

5. A safe production unloading mechanism for photovoltaic module accessories production according to claim 4, characterized in that: The surface of the movable screw rod (19) is threadedly connected to a limit nut (22); a damping ring (23) is arranged at the bottom of the limit nut (22); a damping pad (24) is arranged at the bottom of the damping ring (23); the damping ring (23) is fixedly connected to the bottom of the limit nut (22); the damping pad (24) can be brought into close contact with the surface of the rotating plate (20) by tightening the limit nut (22) to fix the rotating plate (20).

6. A safe production unloading mechanism for photovoltaic module accessories production according to claim 1, characterized in that: The movable plate (5) is fixedly connected to the bottom of the second material guide plate (4), and the movable plate (5) is in a square plate-shaped structure as a whole. A sliding groove (25) is provided on the side of the movable groove (6), and two groups of sliding grooves (25) are provided. The two groups of sliding grooves (25) are symmetrically distributed with respect to the movable groove (6). There are multiple groups of positioning openings (8), and the multiple groups of positioning openings (8) are linearly arranged at equal distances with respect to the side of the movable groove (6). The sliding groove (25) is in a square plate-shaped structure.

7. A safe production unloading mechanism for photovoltaic module accessories production according to claim 1, characterized in that: The auxiliary plate (9) is inserted into the movable groove (6), and the auxiliary plate (9) can move in the movable groove (6). The fixed plate (10) is an "L"-shaped plate structure as a whole. The fixed plate (10) can slide in the slide groove (25). A fixing opening (26) is provided on the side of the fixed plate (10). The positioning ring (11) can pass through the fixing opening (26) and the positioning opening (8) at the same time. A rubber pad (27) is provided on the outer ring surface of the positioning ring (11), and the rubber pad (27) is glued to the outer ring surface of the positioning ring (11).

8. A safe production unloading mechanism for photovoltaic module accessories production according to claim 1, characterized in that: A support plate (28) is arranged on the side of the auxiliary plate (9), and two groups of support plates (28) are arranged. The two groups of support plates (28) are symmetrically distributed with respect to the auxiliary plate (9). One end of the support plate (28) is connected to a baffle plate (30) by means of a second hinge (29). A limit plate (31) is arranged on the side of the support plate (28), and a through hole is provided on the surface of the limit plate (31). A second limit plate (32) is arranged on the side of the baffle plate (30), and a fixing rod (33) is inserted into the second limit plate (32). One end of the fixing rod (33) is also inserted into the through hole provided on the surface of the limit plate (31). When the auxiliary plate (9) moves in the movable groove (6), the baffle plate (30) will not collide with the second end surface of the guide plate (4).

9. A safe production unloading mechanism for photovoltaic module accessories production according to claim 8, characterized in that: A vertical plate (34) is arranged on the surface of the baffle (30), a pin shaft (35) is inserted into the side of the vertical plate (34), one end of the guide plate (12) is sleeved on the pin shaft (35), the pin shaft (35) can be taken out from the vertical plate (34), the guide plate (12) can rotate around the pin shaft (35), and a sound-absorbing pad (36) is arranged on the inner side of the guide plate (12), and the sound-absorbing pad (36) is glued to the inner side of the guide plate (12).

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