Dust adsorption device for metal casting machining area

Abstract

The utility model belongs to the technical field of metal casting machining, and particularly relates to a metal casting machining area dust adsorption device which comprises an installation frame, a supporting mechanism, a baffle and a transmission mechanism. The distance between a worker and a casting is increased, the influence of splashed dust on the worker during casting machining and dust collection is reduced, a baffle is arranged, and the baffle covers one side of a U-shaped mounting frame so that dust moving towards the worker can be blocked during casting machining, and the dust is prevented from falling off. And the transmission mechanism is arranged, the servo motor is controlled to drive the machining platform to move and drive the baffle to move upwards at the same time, the machining platform does not make contact with the baffle all the time when driving the casting to move, and therefore the situation that the baffle blocks movement of the machining platform is avoided.

Description

Technical Field

[0001] This invention belongs to the field of metal casting processing technology, specifically relating to a dust adsorption device for metal casting processing areas. Background Technology

[0002] Metal castings are metal shaped objects obtained by various casting methods. By pouring, injecting, sucking or other casting methods into a pre-prepared mold after smelting molten metal, and then cooling and processing it through grinding and other subsequent means, objects with certain shapes, sizes and properties can be obtained. Metal casting processing areas are prone to generating a lot of dust during processing. Dust adsorption devices can be used to adsorb dust and prevent it from being dispersed in the air and reducing air quality.

[0003] In existing metal casting processing areas, to facilitate the replacement of metal castings by workers, some work platforms on the side closest to the workers are usually not equipped with dust collection devices. The utility model disclosed in authorization announcement number CN216029941U is a dust collection device for casting production and processing. It is equipped with a dust collection mechanism in which a first bevel gear and a second bevel gear cooperate to make two dust collection pipes operate synchronously. The dust collection pipes rotate to collect the dust in the operating box.

[0004] The existing technology has the following problems when in use: the two suction pipes of the device are distributed vertically inside the operating box. Since the dust generated by the grinding device when grinding the casting is random, when the dust speed is too fast or the suction effect of the dust head is poor, some dust is easy to move forward and pollute the air in front of the workers. If the workers inhale it, it will affect their health. Utility Model Content

[0005] The purpose of this invention is to provide a dust adsorption device for metal casting processing areas to solve the technical problems mentioned in the background.

[0006] The specific technical solution adopted in this utility model is as follows:

[0007] A dust adsorption device for a metal casting processing area, comprising:

[0008] The mounting frame is equipped with a dust collection mechanism and a processing mechanism on its upper part.

[0009] A support mechanism is provided on the inner side and outer surface of the mounting frame. The support mechanism is used to increase the distance between the worker and the processing mechanism.

[0010] A baffle is disposed on the top of the support mechanism and is used to shield dust during processing and dust collection.

[0011] A transmission mechanism is provided on the bottom surface of the baffle. The transmission mechanism is used to prevent the baffle from obstructing the movement of the support mechanism and the casting.

[0012] In a preferred embodiment, support columns are fixedly installed at the four corners of the bottom surface of the mounting frame, and a U-shaped mounting bracket is fixedly installed on the top surface of the mounting frame. The dust collection mechanism includes a dust collection box, a fan, a connecting hose, and a dust collection port. The dust collection box is fixedly installed on the top surface of the U-shaped mounting bracket, and the fan is fixedly installed on the top surface of the dust collection box. The output end of the fan is connected to the dust collection box, and a connecting hose is connected to the bottom of the dust collection box. The connecting hose passes through the U-shaped mounting bracket and is connected to the dust collection port.

[0013] In a preferred embodiment, the processing mechanism includes a cylinder, a mounting plate, and processing equipment. The cylinder is fixedly installed on the top surface inside the U-shaped mounting bracket, and the mounting plate is fixedly installed on the outer side of the output end of the cylinder. The connecting hose passes through the mounting plate, the dust suction port is fixedly connected to the mounting plate, and the processing equipment is installed on the bottom surface of the mounting plate.

[0014] In a preferred embodiment, the support mechanism includes a processing platform, a servo motor, a threaded rod, and a guide rod. The processing platform is slidably connected to the inner wall of the mounting frame, and the servo motor is fixedly mounted on the outer side of the mounting frame. The output end of the servo motor passes through the mounting frame and is rotatably connected to the mounting frame. A threaded rod is fixedly provided at the end of the output end of the servo motor. The threaded rod passes through the processing platform and is threadedly connected to the processing platform. The end of the threaded rod away from the servo motor is rotatably connected to the mounting frame through a bearing. A guide rod is fixedly provided between the left and right sides inside the mounting frame. The guide rod passes through the processing platform and is slidably connected to the processing platform. Symmetrical support blocks are fixedly provided on the front and rear sides of the processing platform. A transverse groove adapted to the support block is provided on the inner wall of the mounting frame, and the support block is slidably connected to the mounting frame through the transverse groove.

[0015] In a preferred embodiment, the side of the baffle is provided with a mounting groove, and a transparent observation window is fixedly provided on the inner wall of the mounting groove. The side of the baffle is slidably connected to the U-shaped mounting bracket. A symmetrical T-shaped slide bar is fixedly provided on the side of the baffle near the U-shaped mounting bracket. The side of the U-shaped mounting bracket is provided with a T-shaped groove that matches the T-shaped slide bar. The T-shaped slide bar is slidably connected to the U-shaped mounting bracket through the T-shaped groove. A return spring is fixedly provided on the bottom surface of the T-shaped slide bar. The other end of the return spring is fixedly connected to the bottom surface of the T-shaped groove. Multiple dust-proof soft bristles are fixedly provided on the bottom surface of the baffle.

[0016] In a preferred embodiment, the transmission mechanism includes a rack, a gear, a rotating rod, a cam, a fixed plate, a cross plate, and a connecting rod. A rack is fixedly mounted on the bottom surface of the processing platform, and a gear meshes with the bottom of the rack. A rotating rod is passed through the front of the gear and is fixedly connected to the rotating rod. Symmetrical cams are fixedly mounted on the front and rear sides of the rotating rod. Symmetrical fixed plates are fixedly mounted on the bottom surface of the mounting frame. The rotating rod passes through the fixed plates and is rotatably connected to the fixed plates. The cams are in close contact with the fixed plates and are rotatably connected to the fixed plates. Symmetrical connecting rods are fixedly mounted on the bottom surface of the baffle, and a cross plate is fixedly mounted on the bottom surface of each connecting rod.

[0017] The technical effects achieved by this utility model are as follows:

[0018] This utility model, by setting up a support mechanism, allows workers to place the casting on the top surface of the processing platform. By controlling the servo motor to drive the threaded rod to rotate, the processing platform can be moved into the U-shaped mounting frame until the casting is moved directly under the processing equipment, thereby increasing the distance between the workers and the casting and reducing the impact of splashing dust on the workers during casting processing and dust collection.

[0019] This utility model, by setting up a baffle that covers one side of the U-shaped mounting frame, can block dust moving towards the workers during the processing of castings, further reducing the impact of splashing dust on the workers.

[0020] This invention, through the setting of a transmission mechanism, controls the servo motor to drive the processing platform to move while simultaneously driving the cam to rotate. The rotating cam, upon contacting the horizontal plate, causes the horizontal plate to move upward, thereby causing the baffle to move upward. During the movement of the casting, the processing platform never contacts the baffle, thus avoiding obstruction of the processing platform's movement. When the casting moves directly below the processing mechanism, the baffle moves to its lowest position. The baffle presses against the dust-blocking bristles, ensuring they are tightly attached to the top surface of the processing platform, preventing dust from moving outward through the gap between the bottom of the baffle and the processing platform. The dust-blocking bristles also act as a buffer when the baffle sways up and down due to external influences. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the front view sectional structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the support mechanism and transmission mechanism of this utility model;

[0024] Figure 4 This is a schematic diagram of the baffle and dustproof soft bristle structure of this utility model.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 100. Mounting frame; 101. Support column; 102. U-shaped mounting bracket;

[0027] 200. Vacuuming mechanism; 201. Vacuum box; 202. Fan; 203. Connecting hose; 204. Vacuum inlet;

[0028] 300. Machining mechanism; 301. Cylinder; 302. Mounting plate; 303. Machining equipment;

[0029] 400. Support mechanism; 401. Machining platform; 402. Servo motor; 403. Threaded rod; 404. Guide rod;

[0030] 500. Baffle; 501. Transparent observation window; 502. T-shaped slider; 503. Return spring;

[0031] 600. Transmission mechanism; 601. Rack; 602. Gear; 603. Rotating rod; 604. Cam; 605. Fixed plate; 606. Cross plate; 607. Connecting rod;

[0032] 700. Dustproof soft bristles. Detailed Implementation

[0033] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0034] Many specific details are set forth in the following description in order to provide a full understanding of this utility model. However, this utility model may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0035] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of this utility model. The phrase "in a preferred embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0036] Secondly, this utility model is described in detail with reference to the schematic diagrams. When detailing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0037] Please see the appendix Figures 1 to 2As shown, this utility model provides a dust adsorption device for a metal casting processing area, including: a mounting frame 100, a support mechanism 400, a baffle 500, and a transmission mechanism 600. Support columns 101 are fixedly installed at the four corners of the bottom surface of the mounting frame 100, and a U-shaped mounting bracket 102 is fixedly installed on the top surface of the mounting frame 100. A dust collection mechanism 200 and a processing mechanism 300 are installed above the mounting frame 100.

[0038] In a preferred embodiment, please refer to Figures 1 to 2 The dust collection mechanism 200 consists of a dust collection box 201, a fan 202, a connecting hose 203, and a dust collection port 204. The dust collection box 201 is fixedly installed on the top surface of the U-shaped mounting bracket 102. The fan 202 is fixedly installed on the top surface of the dust collection box 201. The output end of the fan 202 is connected to the dust collection box 201. The bottom of the dust collection box 201 is connected to a front-to-back symmetrical connecting hose 203. The connecting hose 203 passes through the U-shaped mounting bracket 102 and is connected to the dust collection port 204.

[0039] In a preferred embodiment, please refer to Figures 1 to 2 The processing mechanism 300 consists of a cylinder 301, a mounting plate 302, and a processing device 303. The cylinder 301 is fixedly installed on the top surface inside the U-shaped mounting bracket 102. The mounting plate 302 is fixedly installed on the outer side of the output end of the cylinder 301. The connecting hose 203 passes through the mounting plate 302. The dust suction port 204 is fixedly connected to the mounting plate 302. The processing device 303 is installed on the bottom surface of the mounting plate 302.

[0040] In this embodiment, the dust suction port 204 is aligned with the processing equipment 303. When the control cylinder 301 drives the mounting plate 302 and the processing equipment 303 to move downward so that the processing equipment 303 processes the casting, the control fan 202 can make the dust suction port 204 adsorb the dust generated during processing. The dust enters the dust collection box 201 along the dust suction port 204 and the connecting hose 203.

[0041] It should be noted that, in order to save space and highlight the innovative elements of this patent, this solution is based on the existing processing device and dust adsorption device, and improves the related structures of its non-processing device and dust adsorption device, such as the dust collection box 201, the fan 202, and the processing equipment 303, etc., which are conventional devices and will not be described in detail in this patent.

[0042] In a preferred embodiment, please refer to Figures 1 to 3A support mechanism 400 is provided on the inner side and outer surface of the mounting frame 100. The support mechanism 400 consists of a machining platform 401, a servo motor 402, a threaded rod 403, and a guide rod 404. The machining platform 401 is slidably connected to the inner wall of the mounting frame 100. The servo motor 402 is fixedly mounted on the outer side of the mounting frame 100. The output end of the servo motor 402 passes through the mounting frame 100 and is rotatably connected to the mounting frame 100. A threaded rod 403 is fixedly provided at the end of the output end of the servo motor 402. The threaded rod 403 passes through the machining platform 401 and is connected to the machining platform 401. The threaded connection is used, with the end of the threaded rod 403 away from the servo motor 402 rotatably connected to the mounting frame 100 via a bearing. A guide rod 404 is fixedly installed between the left and right sides inside the mounting frame 100. The guide rod 404 passes through the machining platform 401 and is slidably connected to the machining platform 401. The guide rod 404 guides the movement of the machining platform 401. Symmetrical support blocks are fixedly installed on the front and rear sides of the machining platform 401. A transverse groove adapted to the support block is provided on the inner wall of the mounting frame 100. The support block is slidably connected to the mounting frame 100 through the transverse groove and is used to support the machining platform 401.

[0043] In this embodiment, the worker places the casting on the top surface of the processing platform 401. Controlling the servo motor 402 to drive the threaded rod 403 to rotate can move the processing platform 401 into the U-shaped mounting bracket 102 until the casting is moved directly under the processing equipment 303, thereby increasing the distance between the worker and the casting. This reduces the impact of splashing dust on the worker during casting processing and dust removal. When the casting is finished, controlling the servo motor 402 to drive the threaded rod 403 to rotate in the opposite direction can move the processing platform 401 and the casting back to their original positions, making it convenient for the worker to remove the casting and reinstall the casting to be processed.

[0044] In a preferred embodiment, please refer to Figures 1 to 4 The support mechanism 400 has a baffle 500 on its top, and a mounting groove is provided through the side of the baffle 500. A transparent observation window 501 is fixedly provided on the inner wall of the mounting groove. The transparent observation window 501 allows the staff to check the processing of castings and the dust collection. The side of the baffle 500 is slidably connected to the U-shaped mounting bracket 102. A symmetrical T-shaped slide bar 502 is fixedly provided on the side of the baffle 500 near the U-shaped mounting bracket 102. The side of the U-shaped mounting bracket 102 is provided with a T-shaped slide groove that matches the T-shaped slide bar 502. The T-shaped slide bar 502 is slidably connected to the U-shaped mounting bracket 102 through the T-shaped slide groove. The T-shaped slide bar 502 guides the movement of the baffle 500 in conjunction with the T-shaped slide groove. A return spring 503 is fixedly provided on the bottom surface of the T-shaped slide bar 502. The other end of the return spring 503 is fixedly connected to the bottom surface of the inside of the T-shaped slide groove. Multiple dust-blocking soft bristles 700 are fixedly provided on the bottom surface of the baffle 500.

[0045] In this embodiment, the baffle 500 covering one side of the U-shaped mounting bracket 102 can block dust moving towards the workers during casting processing, further reducing the impact of splashed dust on the workers. The baffle 500 pressing the dust-blocking bristles 700 can cause the bristles 700 to bend and adhere tightly to the top surface of the processing platform 401. Even after deformation, the dust-blocking bristles 700 can still block dust, preventing it from moving outwards through the gap between the bottom of the baffle 500 and the processing platform 401. When the dust-blocking bristles 700 detach from the processing platform 401, they can deform... When the baffle 500 is affected by external factors and shakes up and down, the movement of the baffle 500 causes the T-shaped slide bar 502 to move up and down. The return spring 503 and the dustproof soft bristles 700 both undergo elastic deformation due to force. The dustproof soft bristles 700 can prevent the baffle 500 from directly colliding with the processing platform 401, thus playing a buffering role for the baffle 500. When the dust collection mechanism 200 processes the casting and the processing mechanism 300 adsorbs dust, causing the baffle 500 to shake up and down, the dustproof soft bristles 700 never detach from the processing platform 401, and the dustproof effect is good.

[0046] In a preferred embodiment, please refer to Figures 1 to 4 A transmission mechanism 600 is provided on the bottom surface of the baffle 500. The transmission mechanism 600 consists of a rack 601, a gear 602, a rotating rod 603, a cam 604, a fixed plate 605, a horizontal plate 606, and a connecting rod 607. A rack 601 is fixedly provided on the bottom surface of the processing platform 401. A gear 602 meshes with the bottom of the rack 601. A rotating rod 603 is provided through the front of the gear 602. The gear 602 and the rotating rod 603 are fixedly connected. Symmetrical cams 604 are fixedly provided on the front and rear sides of the rotating rod 603. Symmetrical fixed plates 605 are fixedly provided on the bottom surface of the mounting frame 100. The rotating rod 603 passes through the fixed plate 605 and is rotatably connected to the fixed plate 605. The cam 604 is close to the fixed plate 605 and is rotatably connected to the fixed plate 605. A horizontal plate 606 is provided directly above the cam 604. A connecting rod 607 is fixedly provided on the top surface of the horizontal plate 606. The top surface of the connecting rod 607 is fixedly connected to the bottom surface of the baffle 500.

[0047] In this embodiment, while controlling the servo motor 402 to move the processing platform 401, it can also move the rack 601. The movement of the rack 601 drives the gear 602 to rotate, and the rotation of the gear 602 drives the rotating rod 603 and the cam 604 to rotate. The rotation of the cam 604 and its contact with the horizontal plate 606 can drive the horizontal plate 606 to move up or down, thereby driving the baffle 500 to move up and down. When the baffle 500 starts to move upward, the processing platform 401 starts to drive the casting into the U-shaped mounting bracket 102. 1. During the movement of the casting, it never comes into contact with the baffle 500, thus avoiding the baffle 500 from obstructing the movement of the machining platform 401. When the cam 604 rotates 90 degrees, the baffle 500 moves to its maximum height, and the extension of the return spring 503 reaches its maximum. When the cam 604 continues to rotate, the baffle 500 moves downward due to its own weight and the tension of the return spring 503. When the cam 604 rotates 180 degrees, the casting moves directly below the machining mechanism 300, at which point the baffle 500 moves to its lowest position.

[0048] The working principle of this utility is as follows:

[0049] When using this device, the operator places the casting on the top surface of the processing platform 401. Controlling the servo motor 402 to rotate the threaded rod 403 moves the processing platform 401 into the U-shaped mounting bracket 102. Simultaneously, the movement of the processing platform 401 moves the rack 601, which in turn rotates the gear 602. The rotation of the gear 602 then rotates the rotating rod 603 and the cam 604. The rotation of the cam 604, which contacts the horizontal plate 606, causes the horizontal plate 606 to move upwards, thereby moving the baffle 500 upwards. As the baffle 500 begins to move upwards, the processing platform 401... The casting begins to move into the U-shaped mounting bracket 102. When the cam 604 rotates 90 degrees, the baffle 500 moves to its maximum height, and the extension of the return spring 503 reaches its maximum. As the cam 604 continues to rotate, the baffle 500 moves downward due to its own weight and the tension of the return spring 503. When the cam 604 rotates 180 degrees, the casting moves directly below the machining mechanism 300. At this time, the baffle 500 is just at its lowest position. The machining platform 401 never contacts the baffle 500 during the movement of the casting, thus avoiding the baffle 500 from obstructing the movement of the machining platform 401.

[0050] The control cylinder 301 drives the mounting plate 302 and the processing equipment 303 to move downwards, so that the processing equipment 303 processes the casting. The control fan 202 causes the dust suction port 204 to absorb the dust generated during processing. The dust enters the dust collection box 201 along the dust suction port 204 and the connecting hose 203. By increasing the distance between the worker and the casting, the impact of splashing dust on the worker can be reduced during the processing of the casting and dust collection. The baffle 500 covers one side of the U-shaped mounting bracket 102, which can block the dust moving towards the worker during the processing of the casting, further reducing the impact of splashing dust on the worker. The dust bristles 700 can prevent the dust from moving outward through the gap between the bottom of the baffle 500 and the processing platform 401.

[0051] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the art.

Claims

1. A dust adsorption device for a metal casting processing area, characterized in that: include: Mounting frame (100), with a dust collection mechanism (200) and a processing mechanism (300) provided above the mounting frame (100). A support mechanism (400) is provided on the inner side and outer surface of the mounting frame (100). The support mechanism (400) is used to increase the distance between the worker and the processing mechanism (300). A baffle (500) is disposed on top of the support mechanism (400) and is used to shield dust during processing and dust collection. A transmission mechanism (600) is provided on the bottom surface of the baffle (500). The transmission mechanism (600) is used to prevent the baffle (500) from obstructing the movement of the support mechanism (400) and the casting.

2. The dust adsorption device for a metal casting processing area according to claim 1, characterized in that: The mounting frame (100) has four corner supports fixedly installed at the bottom. The mounting frame (100) has a U-shaped mounting bracket (102) fixedly installed on the top surface. The dust collection mechanism (200) includes a dust collection box (201), a fan (202), a connecting hose (203), and a dust collection port (204). The top surface of the U-shaped mounting bracket (102) has a dust collection box (201) fixedly installed. The top surface of the dust collection box (201) has a fan (202) fixedly installed. The output end of the fan (202) is connected to the dust collection box (201). The bottom of the dust collection box (201) is connected to the connecting hose (203). The connecting hose (203) passes through the U-shaped mounting bracket (102) and is connected to the dust collection port (204).

3. The dust adsorption device for a metal casting processing area according to claim 2, characterized in that: The processing mechanism (300) includes a cylinder (301), a mounting plate (302), and a processing device (303). The cylinder (301) is fixedly installed on the top surface inside the U-shaped mounting bracket (102). The mounting plate (302) is fixedly installed on the outer side of the output end of the cylinder (301). The connecting hose (203) passes through the mounting plate (302). The dust suction port (204) is fixedly connected to the mounting plate (302). The processing device (303) is installed on the bottom surface of the mounting plate (302).

4. The dust adsorption device for a metal casting processing area according to claim 1, characterized in that: The support mechanism (400) includes a processing platform (401), a servo motor (402), a threaded rod (403), and a guide rod (404). The processing platform (401) is slidably connected to the inner wall of the mounting frame (100), and the servo motor (402) is fixedly installed on the outer side of the mounting frame (100). The output end of the servo motor (402) passes through the mounting frame (100) to the inside of the mounting frame (100) and is rotatably connected to the mounting frame (100). A threaded rod (403) is fixedly provided at the end of the output end of the servo motor (402), and the threaded rod (403) passes through the processing platform (401). Platform (401) is threadedly connected to processing platform (401). The end of threaded rod (403) away from servo motor (402) is rotatably connected to mounting frame (100) through bearing. Guide rod (404) is fixedly provided between the left and right sides inside mounting frame (100). The guide rod (404) passes through processing platform (401) and is slidably connected to processing platform (401). Symmetrical support blocks are fixedly provided on the front and rear sides of processing platform (401). A transverse groove adapted to the support block is provided on the inner wall of mounting frame (100). The support block is slidably connected to mounting frame (100) through the transverse groove.

5. The dust adsorption device for a metal casting processing area according to claim 4, characterized in that: The side of the baffle (500) is provided with a mounting groove, and a transparent observation window (501) is fixedly provided on the inner wall of the mounting groove. The side of the baffle (500) is slidably connected to the U-shaped mounting bracket (102). A symmetrical T-shaped slide bar (502) is fixedly provided on the side of the baffle (500) near the U-shaped mounting bracket (102). A T-shaped groove adapted to the T-shaped slide bar (502) is provided on the side of the U-shaped mounting bracket (102). The T-shaped slide bar (502) is slidably connected to the U-shaped mounting bracket (102) through the T-shaped groove. A return spring (503) is fixedly provided on the bottom surface of the T-shaped slide bar (502). The other end of the return spring (503) is fixedly connected to the bottom surface inside the T-shaped groove. Multiple dust-proof soft bristles (700) are fixedly provided on the bottom surface of the baffle (500).

6. The dust adsorption device for a metal casting processing area according to claim 5, characterized in that: The transmission mechanism (600) includes a rack (601), a gear (602), a rotating rod (603), a cam (604), a fixed plate (605), a cross plate (606), and a connecting rod (607). A rack (601) is fixedly mounted on the bottom surface of the processing platform (401). A gear (602) meshes with the bottom of the rack (601). A rotating rod (603) is passed through the front of the gear (602). The gear (602) and the rotating rod (603) are fixedly connected. The rotating rod (604)... 3) Symmetrical cams (604) are fixedly installed on the front and rear sides. Symmetrical fixed plates (605) are fixedly installed on the bottom surface of the mounting frame (100). The rotating rod (603) passes through the fixed plate (605) and is rotatably connected to the fixed plate (605). The cam (604) is close to the fixed plate (605) and is rotatably connected to the fixed plate (605). Symmetrical connecting rods (607) are fixedly installed on the bottom surface of the baffle (500). A horizontal plate (606) is fixedly installed on the bottom surface of each connecting rod (607).

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