Screening device suitable for gear production

Abstract

The screening device suitable for gear production comprises a main body frame, a feeding part, a tooth groove screening part, a flow dividing part and a control part, the main body frame comprises a base, a screening seat, a protection seat, a feeding seat, a transfer carrier plate, a fourth push rod motor and a dustproof cover plate, and the feeding part comprises a presenting mechanism, a transfer mechanism and a limiting mechanism. The tooth socket screening part comprises a positioning adjusting mechanism and a detecting mechanism, and the distributing part comprises a weight measuring mechanism, a waste recycling mechanism, a defective product recycling mechanism and a qualified product distributing mechanism. A mechanical transfer gear is adopted, so that the labor intensity is greatly reduced; through mechanical detection, the operation process is simplified, the detection precision is high, and errors are few; and the time consumption of the screening process is reduced, so that the gear production efficiency is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the field of gear production, in particular to a screening device suitable for gear production. Background Art

[0002] Gears are important components in a variety of mechanical devices and are commonly used in hydraulic equipment, gear pumps, transmissions, and other equipment. Chinese patent CN118268828A discloses a high-strength gear production process and production equipment, belonging to the field of gear production technology. The production equipment used in the high-strength gear production process includes a conveying assembly; a tooth-pulling assembly mounted on the conveying assembly; a clamping and moving assembly mounted on the tooth-pulling assembly; and a liquid spraying assembly mounted on the tooth-pulling assembly. The tooth-pulling assembly includes a broach, an upper drive assembly, a lower drive assembly, and two sets of position-limiting clamping assemblies.

[0003] The complexity and multi-step nature of the gear production process inevitably lead to various defects such as scratches, cracks, peeling, and foreign matter adhesion during the manufacturing process. After the gears are produced using equipment similar to the above, the inner diameter, tooth groove, and outer diameter of the gears need to be inspected to effectively ensure the accuracy of the gear parameters. Among them, the traditional inspection of tooth grooves and outer diameters has the following defects:

[0004] First, manually moving gears is labor-intensive and puts a heavy burden on the hands;

[0005] Second, visual inspection by personnel is cumbersome, requires high experience, and has large errors;

[0006] Third, the screening efficiency is low, which seriously restricts the production efficiency of gears. Utility Model Content

[0007] The utility model provides a screening device suitable for gear production, which can effectively solve the problems mentioned in the background technology.

[0008] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0009] A screening device suitable for gear production comprises a main frame, a feeding part, a tooth groove screening part, a diversion part and a control part.

[0010] The main frame includes a base, a screening seat, a protective seat, a loading seat, a transfer carrier, four push rod motors, and a dust cover. The base includes a rectangular hollow container; the screening seat is set on the base through a pillar, including a rectangular hollow container, with a circular through hole and a rectangular through hole set on its upper bottom plate; the protective seat includes a rectangular container, with a "U"-shaped opening slot set on the right side plate, a rectangular through hole set on the bottom plate, and two "U"-shaped opening slots set on the front and rear side plates; the right end of the rectangular through hole coincides with the bottom end of the "U"-shaped opening slot; the loading seat includes a rectangular hollow container, with a protective edge set on its upper bottom plate; the transfer carrier is set on the base through a pillar, located above the screening seat, and has a strip through hole set on it; the push rod motor is set on the protective seat through a mounting bracket; the dust cover is slidably connected to the protective seat and is connected to the movable end of the push rod motor.

[0011] Furthermore, the feeding part includes a presenting mechanism, a transfer mechanism, and a limiting mechanism. The presenting mechanism includes a screw stepper motor 1, a slide rod 1, and a movable carrier 1; the screw stepper motor 1 and the slide rod 1 are arranged on the feeding seat; the movable carrier 1 is slidably connected to the slide rod 1 and connected to the nut seat of the screw stepper motor 1; an "L"-shaped positioning block is provided on the movable carrier 1. The transfer mechanism includes a servo motor 1, a slide rod 2, a movable carrier 2, an electric telescopic rod 1, and an electromagnet 1; the servo motor 1 and the slide rod 2 are arranged on the transfer carrier; the movable carrier 2 is slidably connected to the slide rod 2; the mounting carrier 1 is arranged on the lower bottom surface of the movable carrier 2 through a connecting short column; the electric telescopic rod 1 is arranged on the mounting carrier 1; and the electromagnet 1 is arranged on the movable end of the electric telescopic rod 1. The limiting mechanism includes a push rod motor 3 and a limiting block; the push rod motor 3 is symmetrically arranged on the transfer carrier; and the limiting block is arranged on the movable end of the push rod motor 3.

[0012] Furthermore, the tooth groove screening part includes a positioning adjustment mechanism and a detection mechanism. The positioning adjustment mechanism includes an adjustment structure and a positioning structure. The adjustment structure includes a screening disc, a cylindrical connecting tube, gear 1 and servo motor 2; a circular through hole 2 is provided on the screening disc; a universal ball is provided on the lower bottom surface of the screening disc, and the universal ball is slidably connected to the screening seat; the cylindrical connecting tube is provided in the circular through hole 2 and is located in the circular through hole 1; gear 1 is provided on the cylindrical connecting tube through a mounting plate; the servo motor 2 is provided in the screening seat, and a gear 2 is provided on its rotating shaft through a reduction gear box; gear 1 and gear 2 are meshed. The positioning structure includes a push rod motor 1 and a truncated cone-shaped receiving block; the push rod motor 1 is provided in the cylindrical connecting tube; the truncated cone-shaped receiving block is provided on the movable end of the push rod motor 1, and an anti-slip pad is provided on it. The detection mechanism includes a fixed rod, a push rod motor 2 and a movable detection rod; the push rod motor 2 and the fixed rod are provided on the screening seat; the movable detection rod is provided on the movable end of the push rod motor 2.

[0013] Furthermore, the diversion part includes a weighing mechanism, a waste recycling mechanism, a defective product recycling mechanism and a qualified product diversion mechanism. The weighing mechanism includes a weighing platform and a non-slip bottom plate; the weighing platform is arranged in the screening seat, below the rectangular through hole 1; the non-slip bottom plate is arranged on the upper end of the weighing platform through the pressure sensor module. The waste recycling mechanism includes a conveyor belt 1, a recycling box and a buffer pad; one end of the conveyor belt 1 is arranged on the screening seat, and the other end is arranged on the base through the support 3; the recycling box is detachably connected to the base; the buffer pad is detachably connected to the recycling box. Two defective product recycling mechanisms are provided, both including a recycling pipe 1 and a conveyor belt 2; one end of the recycling pipe 1 is arranged on the "U"-shaped opening slot 2, and the other end is arranged on the base through the support 4; one end of the conveyor belt 2 is arranged on the screening seat, and the other end is arranged in the recycling pipe 1. The qualified product diversion mechanism includes a recovery pipe 2 and a conveyor belt 3; one end of the recovery pipe 2 is arranged on the "U"-shaped open slot 2, and the other end is arranged on the base through the support 5; the "U"-shaped open slot 3 is arranged on the upper bottom plate of the recovery pipe 2; the hinge on the "U"-shaped open slot 3 is connected to the movable cover plate.

[0014] Furthermore, the control part includes a control mechanism, a feedback mechanism and a PLC controller. The control mechanism includes a start switch and a pause switch. The feedback mechanism includes several distance sensor modules.

[0015] Furthermore, a second electromagnet is added to the screening disc 301 to improve the positioning accuracy.

[0016] Advantages compared to existing technologies:

[0017] In this utility model, the following functions are achieved through the integrated arrangement of the main frame, feeding part, tooth slot screening part, diversion part and control part:

[0018] First, the mechanical transfer gears greatly reduce labor intensity.

[0019] Secondly, mechanical testing is used to simplify the operating process, with high detection accuracy and few errors.

[0020] Third, the screening efficiency is high, which reduces the time consumption of the screening process and thus significantly improves the production efficiency of gears. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0022] Figure 2 This is a schematic diagram of the partial cross-sectional structure of the utility model from above Figure 1 ;

[0023] Figure 3 This is a schematic diagram of the partial cross-sectional structure of the utility model from a top view Figure 2 ;

[0024] Figure 4 This is a schematic diagram of a partial cross-sectional structure of the utility model;

[0025] Figure 5 This is a schematic diagram of a partially enlarged cross-sectional structure of the utility model;

[0026] Figure 6 This is a schematic diagram of the system structure of the utility model.

[0027] Figure: 101. Base, 102. Screening Base, 103. Protective Base, 104. Loading Base, 105. Transfer Plate, 106. Pusher Motor (IV), 107. Dust Cover, 201. Screw Stepper Motor (I), 202. Movable Plate (I), 203. L-Shaped Positioning Block, 204. Servo Motor (I), 205. Movable Plate (II), 206. Electric Telescopic Rod (I), 207. Electromagnet (I), 208. Pusher Motor (III), 301. Screening Disc, 302. Cylindrical Connecting Tube, 303. Servo Motor (II), 304. Gear (I), 305. Pusher Motor (I), 306. Cone-Shaped Support Block, 307. Fixing Rod, 308. Pusher Motor (II), 401. Weighing Platform, 402. Anti-Slip Bottom Plate, 403. Conveyor belt 1, 404. Recovery box, 405. Recovery tube 1, 406. Conveyor belt 2, 407. Recovery tube 2, 408. Conveyor belt 3, 409. Movable cover. DETAILED DESCRIPTION

[0028] Example 1, refer to the attached Figure 1-6 , a screening device suitable for gear production, including a main frame, a feeding part, a tooth groove screening part, a diversion part and a control part.

[0029] The main frame includes a base 101, a screening seat 102, a protective seat 103, a loading seat 104, a transfer carrier 105, a push rod motor 106 and a dust cover 107.

[0030] The base 101 comprises a rectangular hollow container.

[0031] The screening seat 102 is mounted on the base 101 via support 1.

[0032] The screening seat 102 includes a rectangular hollow container 2.

[0033] A circular through hole 1 and a rectangular through hole 1 are arranged on the upper bottom plate of the second rectangular hollow container.

[0034] The protective seat 103 includes a rectangular container.

[0035] A U-shaped opening through slot is provided on the right side plate of the rectangular container.

[0036] A second rectangular through hole is provided on the bottom plate of the first rectangular container; the right end of the second rectangular through hole coincides with the bottom end of the first U-shaped opening through groove.

[0037] A second U-shaped opening slot is provided on the front side plate and the rear side plate of the first rectangular container.

[0038] The loading base 104 includes a rectangular hollow container three.

[0039] A protective edge is provided on the upper bottom plate of the rectangular hollow container three.

[0040] The transfer carrier 105 is mounted on the base 101 via a second support column; the transfer carrier 105 is located above the screening seat 102 .

[0041] The transfer carrier 105 is provided with a strip-shaped through hole 1.

[0042] The push rod motor 4 106 is arranged on the protective seat 103 through the mounting bracket.

[0043] The dust cover 107 is slidably connected to the protective seat 103; the dust cover 107 is connected to the movable end of the push rod motor 4 106.

[0044] The feeding part includes a presenting mechanism, a transfer mechanism and a limiting mechanism.

[0045] The presenting mechanism includes a screw stepping motor 201, a sliding rod and a movable carrier plate 202.

[0046] The screw stepper motor 201 and the slide rod 1 are arranged on the loading base 104.

[0047] The movable carrier plate 1 202 is slidably connected to the slide bar 1.

[0048] The movable carrier plate 202 is connected to the nut seat of the screw stepping motor 201.

[0049] An L-shaped positioning block 203 is provided on the movable carrier plate 1 202 ; the L-shaped positioning block 203 is used to assist in calibrating the grabbing coordinates.

[0050] The transfer mechanism includes a servo motor 204, a slide bar 2, a movable carrier 205, an electric telescopic rod 206 and an electromagnet 207.

[0051] The servo motor 1 204 and the slide bar 2 are symmetrically arranged on the transfer carrier 105 .

[0052] The second movable carrier plate 205 is slidably connected to the second sliding rod.

[0053] The mounting plate 1 is arranged on the lower bottom surface of the movable mounting plate 2 205 by connecting short columns.

[0054] The electric telescopic rod 206 is disposed on the mounting plate 1.

[0055] The electromagnet 207 is disposed on the movable end of the electric telescopic rod 206 .

[0056] The limiting mechanism includes a push rod motor 3 208 and a limiting block.

[0057] The push rod motor 3 208 is symmetrically arranged on the transfer carrier 105 .

[0058] The limit block is arranged on the movable end of the push rod motor 3 208 .

[0059] The tooth groove screening part includes a positioning adjustment mechanism and a detection mechanism.

[0060] The positioning adjustment mechanism includes an adjustment structure and a positioning structure.

[0061] The adjustment structure includes a screening disc 301 , a cylindrical connecting tube 302 , a gear 1 304 and a servo motor 2 303 .

[0062] A second circular through hole is provided on the screening disc 301 .

[0063] A universal ball is provided on the bottom surface of the screening disc 301 , and the universal ball is slidably connected to the screening seat 102 .

[0064] The cylindrical connecting pipe 302 is disposed in the second circular through hole and is located in the first circular through hole.

[0065] Gear 1 304 is mounted on the cylindrical connecting tube 302 via a mounting plate.

[0066] The second servo motor 303 is disposed in the screening seat 102 .

[0067] Gear 2 is provided on the rotating shaft of servo motor 2 303 via a reduction gear box; gear 1 304 and gear 2 are meshed with each other.

[0068] The positioning structure includes a push rod motor 305 and a frustum-shaped receiving block 306.

[0069] The push rod motor 305 is disposed in the cylindrical connecting tube 302 .

[0070] The truncated cone-shaped receiving block 306 is arranged on the movable end of the push rod motor 1 305; an anti-slip pad is arranged on the truncated cone-shaped receiving block 306.

[0071] The detection mechanism includes a fixed rod 307, a push rod motor 308 and a movable detection rod.

[0072] The push rod motor 2 308 and the fixing rod 307 are disposed on the screening seat 102 .

[0073] The movable detection rod is arranged on the movable end of the second push rod motor 308 .

[0074] The diversion part includes a weighing mechanism, a waste recycling mechanism, a defective product recycling mechanism and a qualified product diversion mechanism.

[0075] The weighing mechanism includes a weighing platform 401 and an anti-slip bottom plate 402 .

[0076] The weighing platform 401 is disposed in the screening seat 102 and is located below the rectangular through hole 1.

[0077] The anti-skid bottom plate 402 is disposed on the upper end of the weighing platform 401 through a pressure sensor module.

[0078] The waste recycling mechanism includes a conveyor belt 403, a recycling box 404 and a buffer pad.

[0079] One end of the conveyor belt 1 403 is disposed on the screening seat 102 , and the other end is disposed on the base 101 via a support 3 .

[0080] The recovery box 404 is detachably connected to the base 101 .

[0081] The cushion pad is detachably connected to the recovery box 404 .

[0082] There are two defective product recycling agencies.

[0083] The defective product recovery mechanism includes a recovery pipe 1 405 and a conveyor belt 2 406 .

[0084] One end of the recovery pipe 1 405 is set on the "U"-shaped opening groove 2; the other end of the recovery pipe 1 405 is set on the base 101 through the support 4.

[0085] One end of the second conveyor belt 406 is disposed on the screening seat 102 ; the other end of the second conveyor belt 406 is disposed in the first recovery pipe 405 .

[0086] The qualified product diversion mechanism includes a recycling pipe 2 407 and a conveyor belt 3 408 .

[0087] One end of the second recovery pipe 407 is set on the "U"-shaped opening groove 2, and the other end is set on the base 101 through the support 5.

[0088] A third U-shaped opening slot is provided on the upper bottom plate of the second recovery pipe 407 ; a hinge on the third U-shaped opening slot is connected to the movable cover plate 409 .

[0089] The control part includes control mechanism, feedback mechanism and PLC controller.

[0090] The control mechanism includes a start switch and a pause switch.

[0091] The start switch and the pause switch are arranged on the outer wall of the side plate of the screening seat.

[0092] The feedback mechanism includes a distance sensor module 1, a distance sensor module 2, a distance sensor module 3 and a distance sensor module 4.

[0093] The distance sensor module 1 is disposed on the movable carrier plate 1 202 and is used to assist the PLC controller in detecting the position of the gear to be screened.

[0094] The distance sensor module 2 is arranged on the screening disc 301 to assist the PLC controller in detecting the position of the gear to be screened.

[0095] The distance sensor module 3 is arranged on the fixed rod 307 and is used to assist the PLC controller in detecting the position of the gear to be screened.

[0096] The distance sensor module 4 is arranged on the movable detection rod and is used to assist the PLC controller in detecting the position and parameters of the tooth groove.

[0097] The screw stepper motor described in this utility model includes a servo motor, a ball screw pair, and a nut holder. A screw drive is provided between the servo motor and the ball screw pair. The ball screw pair comprises a combination of a ball screw, a ball nut, a rotating steel ball, and a circulating element. The nut holder is connected to the ball nut of the ball screw pair.

[0098] Working principle and usage:

[0099] The first step is pre-setting:

[0100] The device is powered on and debugged. The gear transfer box containing the gear to be screened is placed on the movable carrier plate 1 202 , with one end of the transfer box close to the "L" shaped positioning block 203 .

[0101] One end of the second recycling pipe 407 is connected to the conveyor belt of the packaging process; one end of the first recycling pipe 405 is connected to the conveyor belt of the corresponding reprocessing process.

[0102] Second step, use:

[0103] When the start switch is pressed, the distance sensor module 1 outputs a signal to the PLC controller, and the PLC controller outputs a signal to the push rod motor 4 106, the servo motor 1 204, the electric telescopic rod 1 206, and the electromagnet 1 207.

[0104] Pusher motor 4 106 opens dust cover 107. Electric telescopic rod 1 206 drives electromagnet 1 207 downward to grab the gears to be screened. When a row of gears to be screened is complete, lead screw stepper motor 1 201 drives movable carrier 1 202 backward one unit distance. Servo motor 1 204 then drives the gears to be screened onto screening disc 301. Distance sensor module 2 outputs a signal to the PLC controller, which in turn outputs a signal to pusher motor 1 305 and servo motor 2 303.

[0105] Pusher motor 1 305 moves downward in an orderly manner, bringing the gear to be screened into contact with the screening disc 301. Servo motor 2 303 rotates in an orderly manner, and distance sensor module 3 assists the PLC controller in determining the maximum outer diameter of the gear to be screened. The PLC controller then delays outputting a signal to pusher motor 2 308, which drives the movable detection rod to the optimal position (preset and within 5 cm of the tooth groove bottom) to allow the PLC controller to accurately determine the tooth groove dimensions via distance sensor module 4. If all tooth groove values meet the preset values (i.e., are within the preset range), the product is considered qualified; otherwise, it is considered unqualified. If the tooth groove opening is too deep, the product is considered scrapped; the remaining products are considered defective.

[0106] Push rod motor 3 208 drives the limit block backward. Servo motor 1 204, electric telescopic rod 1 206, and electromagnet 1 207 work together to transfer defective products to the corresponding conveyor belt 2 406 and waste products to the corresponding conveyor belt 1 403. Conveyor belts 2 406 and 1 403 start with a delay, moving the defective and waste products a unit distance. Acceptable products are transferred to anti-slip base plate 402. The pressure sensor module outputs a signal to the PLC controller, which in turn outputs a signal to servo motor 1 204, electric telescopic rod 1 206, and electromagnet 1 207.

[0107] Servo motor 1 204, electric telescopic rod 1 206, and electromagnet 1 207 cooperate to transfer qualified products (quality meets the preset value) to conveyor belt 3 408; transfer defective products (quality values exceed the preset value) to the corresponding conveyor belt 2 406; and transfer waste products (quality values are lower than the preset value) to the corresponding conveyor belt 1 403; conveyor belt 3 408, conveyor belt 2 406, and conveyor belt 1 403 are delayed to start, driving the defective and waste products to move a unit distance to make room for subsequent products.

[0108] Example 2, based on Example 1, a second electromagnet is additionally provided on the screening disc 301 to improve the accuracy of the position.

Claims

1. A screening device suitable for gear production, characterized by: The invention comprises a main frame, a feeding part, a tooth slot screening part, a diversion part and a control part; the main frame comprises a base (101), a screening seat (102), a protective seat (103), a loading seat (104), a transfer carrier (105), a push rod motor 4 (106) and a dust cover (107); the feeding part comprises a presenting mechanism, a transfer mechanism and a limiting mechanism; the tooth slot screening part comprises a positioning adjustment mechanism and a detection mechanism; the positioning adjustment mechanism comprises an adjustment structure and a positioning structure; the adjustment structure comprises a screening disc (301), a cylindrical connecting pipe (302), a gear 1 (304) and a servo motor 2 (303) ; A second circular through hole is provided on the screening disc (301); a universal ball is provided on the lower bottom surface of the screening disc (301), and the universal ball is slidably connected to the screening seat (102); a cylindrical connecting pipe (302) is provided in the second circular through hole and is located in the first circular through hole; a gear 1 (304) is provided on the cylindrical connecting pipe (302) through a mounting plate; a second servo motor (303) is provided in the screening seat (102), and a gear 2 is provided on its rotating shaft through a reduction gear box; the gear 1 (304) and the gear 2 are meshed with each other; the diversion part includes a weighing mechanism, a waste recovery mechanism, a defective product recovery mechanism and a qualified product diversion mechanism.

2. A screening device suitable for gear production according to claim 1, characterized in that: The base (101) includes a rectangular hollow container; the screening seat (102) is arranged on the base (101) through a pillar, and includes a rectangular hollow container (2), on the upper bottom plate of which a circular through hole (1) and a rectangular through hole (1) are arranged; the protective seat (103) includes a rectangular container (1), on the right side plate of which a "U"-shaped opening slot (1) is arranged, on the bottom plate of which two rectangular through holes are arranged, and on the front side plate and the rear side plate of which two "U"-shaped opening slots are arranged; the loading seat (104) includes a rectangular hollow container (3), on the upper bottom plate of which a protective edge is arranged; the transfer carrier (105) is arranged on the base (101) through a pillar, and is located above the screening seat (102), and is provided with a strip through hole (1) on the transfer carrier; the push rod motor (4) (106) is arranged on the protective seat (103) through a mounting frame; the dust cover (107) is slidably connected to the protective seat (103), and is connected to the movable end of the push rod motor (4) (106).

3. The screening device suitable for gear production according to claim 1, characterized in that: The positioning structure comprises a push rod motor (305) and a truncated cone receiving block (306); the push rod motor (305) is arranged in a cylindrical connecting tube (302); the truncated cone receiving block (306) is arranged on the movable end of the push rod motor (305); and an anti-slip pad is arranged on the truncated cone receiving block (306).

4. The screening device suitable for gear production according to claim 1, characterized in that: The presenting mechanism comprises a screw stepping motor (201), a slide rod and a movable carrier plate (202); the screw stepping motor (201) and the slide rod are arranged on a loading seat (104); the movable carrier plate (202) is slidably connected to the slide rod and is connected to a nut seat of the screw stepping motor (201); an "L"-shaped positioning block (203) is arranged on the movable carrier plate (202).

5. The screening device suitable for gear production according to claim 1, characterized in that: The transfer mechanism comprises a servo motor (204), a slide bar (2), a movable carrier (205), an electric telescopic rod (206) and an electromagnet (207); the servo motor (204) and the slide bar (2) are arranged on the transfer carrier (105); the movable carrier (205) is slidably connected to the slide bar (2); the mounting carrier (1) is arranged on the lower bottom surface of the movable carrier (205) through a connecting short column; the electric telescopic rod (206) is arranged on the mounting carrier (1); and the electromagnet (207) is arranged on the movable end of the electric telescopic rod (206).

6. The screening device suitable for gear production according to claim 1, characterized in that: The limiting mechanism comprises a push rod motor three (208) and a limiting block; the push rod motor three (208) is arranged on the transfer carrier (105); and the limiting block is arranged on the movable end of the push rod motor three (208).

7. The screening device suitable for gear production according to claim 1, characterized in that: The detection mechanism comprises a fixed rod (307), a second push rod motor (308) and a movable detection rod; the second push rod motor (308) and the fixed rod (307) are arranged on the screening seat (102); and the movable detection rod is arranged on the movable end of the second push rod motor (308).

8. The screening device suitable for gear production according to claim 1, characterized in that: The weighing mechanism comprises a weighing platform (401) and an anti-skid bottom plate (402); the weighing platform (401) is arranged in the screening seat (102) and is located below the rectangular through hole 1; the anti-skid bottom plate (402) is arranged on the upper end of the weighing platform (401) through a pressure sensor module.

9. The screening device suitable for gear production according to claim 1, characterized in that: The waste recycling mechanism comprises a conveyor belt (403), a recycling box (404) and a buffer pad; one end of the conveyor belt (403) is arranged on the screening seat (102), and the other end is arranged on the base (101) through the support three; the recycling box (404) is detachably connected to the base (101); and the buffer pad is detachably connected to the inside of the recycling box (404).

10. The screening device suitable for gear production according to claim 1, characterized in that: The defective product recovery mechanism includes a recovery pipe 1 (405) and a conveyor belt 2 (406); one end of the recovery pipe 1 (405) is set on the "U"-shaped opening slot 2, and the other end is set on the base (101) through the support 4; one end of the conveyor belt 2 (406) is set on the screening seat (102), and the other end is set in the recovery pipe 1 (405); the qualified product diversion mechanism includes a recovery pipe 2 (407) and a conveyor belt 3 (408); one end of the recovery pipe 2 (407) is set on the "U"-shaped opening slot 2, and the other end is set on the base (101) through the support 5; a "U"-shaped opening slot 3 is set on the upper bottom plate of the recovery pipe 2 (407); the upper hinge of the "U"-shaped opening slot 3 is connected to the movable cover plate (409).

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