Self-cleaning type rotary material pushing piece mechanism

Abstract

The utility model discloses a self-cleaning type rotary material pushing piece mechanism which comprises a driving system, a pushing plate and two infrared photoelectric sensors which are installed on a base plate, the pushing plate is arranged on the base plate in a sliding mode, the driving system drives the pushing plate to move back and forth, a light shielding plate is installed on the pushing plate, and the two infrared photoelectric sensors are arranged on the light shielding plate. And the pneumatic cleaning unit is used for pneumatically cleaning the lenses of the two infrared photoelectric sensors. The pneumatic cleaning unit is used for automatically and pneumatically cleaning the lenses of the two infrared photoelectric sensors, and dust can be effectively prevented from being attached to the lenses.

Description

Technical Field

[0001] The utility model relates to the technical field of semiconductor chip processing, in particular to a self-cleaning rotating material pushing mechanism. Background Art

[0002] During semiconductor chip processing, after the chip raw material is injected into the cassette, a push rod is required to push the filled cassette onto a conveyor belt leading to the injection molding room for the final molding process. Since the cassette must be completely filled with filled cassettes before proceeding to the next step, a push rod mechanism is required to quickly push all the chips in the cassette out of the cassette.

[0003] Existing rotary pusher mechanisms include a drive system mounted on a base plate, a pusher plate with a light shield, and two infrared photoelectric sensors. The drive system drives the pusher plate to repeatedly move back and forth on the base plate, while the two infrared photoelectric sensors detect the position of the light shield to determine whether a single stroke is complete. Dust easily accumulates on the opposing light emitter and light receiver lenses of the infrared photoelectric sensors. In the event of severe dust obstruction, the sensors will not receive light signals of sufficient intensity, resulting in missed detections. Therefore, this application provides a self-cleaning rotary pusher mechanism to meet this need. Utility Model Content

[0004] The purpose of the present application is to provide a self-cleaning rotary pusher mechanism for solving the technical problem in the prior art of missed detection caused by dust adhering to the lens of the infrared photoelectric sensor.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a self-cleaning rotating push sheet mechanism, comprising a drive system, a push plate and two infrared photoelectric sensors installed on a substrate. The push plate is slidably arranged on the substrate, and the drive system drives the push plate to move back and forth. A light shielding plate is installed on the push plate, and it also includes a pneumatic cleaning unit for pneumatically cleaning the lenses of the two infrared photoelectric sensors.

[0006] As a preferred implementation manner in this embodiment, the pneumatic cleaning unit includes two hollow cylinders mounted on the light shielding plate, a threaded tube is mounted on the hollow cylinder, and the threaded tube is threadedly sleeved on the screw, a sealing block is rotatably provided on the end of the screw located in the inner cavity of the hollow cylinder, and an elastic ring is provided on the outer surface of the sealing block and is in sliding contact with the inner wall of the hollow cylinder, a cylindrical gear is fixed on the other end of the screw, an air inlet pipe and an air outlet pipe are provided on the hollow cylinder, an air inlet check valve is installed on the air inlet pipe, an air outlet check valve is installed on the air outlet pipe, two branches are obliquely downwardly provided on the air outlet pipe, and the air outlet heads of the two branches are located above the lens of the infrared photoelectric sensor and obliquely opposite to the lens;

[0007] The device also includes a first tooth plate installed on the lens of the infrared photoelectric sensor.

[0008] As a preferred implementation in this embodiment, it also includes an adjustment alignment mechanism for adjusting and extending the alignment time between the air outlet head and the lens.

[0009] As a preferred implementation in this embodiment, the adjustment and alignment mechanism includes a rotating shaft with a plate-shaped gear at the end, and a second gear plate mounted on the infrared photoelectric sensor;

[0010] The air outlet head is connected to the branch pipe through a hose, and the air outlet head and the branch pipe are rotatably connected through a rotating shaft. An elastic damping ring is provided at the rotation connection between the rotating shaft and the branch pipe, and the elastic damping ring is installed on the branch pipe.

[0011] As a preferred implementation in this embodiment, the air outlet head is a conical structure that is wide at the top and narrow at the bottom.

[0012] In summary, the technical effects and advantages of the utility model are:

[0013] The utility model has a reasonable structure and utilizes a pneumatic cleaning unit to automatically pneumatically clean the lenses of the two infrared photoelectric sensors, which can effectively prevent dust from adhering to the lenses;

[0014] In the utility model, an adjustment and alignment mechanism is provided to prolong the pneumatic cleaning time of the lens, thereby improving the cleaning effect of the lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the overall structure of the original equipment;

[0017] Figure 2 This is a schematic diagram of the structure of the shading plate and infrared photoelectric sensor in the utility model;

[0018] Figure 3 for Figure 2 Schematic diagram of the hollow core tube structure viewed from above;

[0019] Figure 4 for Figure 2 Schematic diagram of the hollow core tube and its partially enlarged structure.

[0020] Figure: 1, base plate; 2, push plate; 3, light shielding plate; 4, infrared photoelectric sensor; 5, drive system; 6, hollow cylinder; 7, sealing block; 8, screw; 9, threaded pipe; 10, cylindrical gear; 11, branch pipe; 12, air inlet pipe; 13, air outlet pipe; 14 、 Inlet check valve; 15. Outlet check valve; 16. First tooth; 17. Outlet head; 18. Hose; 19. Elastic damping ring; 20. Rotating shaft; 21. Plate gear; 22. Second gear plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example: Reference Figure 1 The self-cleaning rotating pusher mechanism shown includes a drive system 5, a push plate 2 and two infrared photoelectric sensors 4 installed on a substrate 1. The push plate 2 is slidably set on the substrate 1. The drive system 5 drives the push plate 2 to move back and forth. A light shielding plate 3 is installed on the push plate 2. It is characterized in that it also includes a pneumatic cleaning unit for pneumatically cleaning the lenses of the two infrared photoelectric sensors 4.

[0023] The pneumatic cleaning unit is used to pneumatically clean the lenses of the two infrared photoelectric sensors 4, which can prevent the lenses from being scratched while cleaning them (compared to directly wiping them with a cloth or a brush).

[0024] As a preferred implementation in this embodiment, Figure 1-3 As shown, the pneumatic cleaning unit includes two hollow cylinders 6 mounted on the visor 3, a threaded tube 9 is installed on the hollow cylinder 6, and the threaded tube 9 is threadedly sleeved on the screw 8, the screw 8 is located at the end of the inner cavity of the hollow cylinder 6 and is rotatably provided with a sealing block 7, and the outer surface of the sealing block 7 is provided with an elastic ring that slides against the inner wall of the hollow cylinder 6, and a cylindrical gear 10 is fixed to the other end of the screw 8, an air inlet pipe 12 and an air outlet pipe 13 are provided on the hollow cylinder 6, an air inlet check valve 14 is installed on the air inlet pipe 12, and an air outlet check valve 15 is installed on the air outlet pipe 13, and two branch pipes 11 are obliquely downwardly provided on the air outlet pipe 13, and the air outlet heads 17 of the two branch pipes 11 are located above the lens of the infrared photoelectric sensor 4 and obliquely opposite to the lens;

[0025] The infrared photoelectric sensor 4 further includes a first tooth plate 16 mounted on the lens.

[0026] When the driving system 5 drives the push plate 2 to move, before the shading plate 3 is detected by the infrared photoelectric sensor 4, its cylindrical gear 10 will contact the first gear plate 16, causing the screw 8 to rotate and move upward, and then causing the sealing block 7 inside the hollow cylinder 6 to move vertically upward, thereby squeezing the air pressure inside the hollow cylinder 6 and entering the air outlet pipe 13, and finally being quickly discharged from the air outlet head 17. The dust and debris attached to the lens are blown clean by the quickly discharged gas. When the push plate 2 moves in the opposite direction, its cylindrical gear 10 rotates in the opposite direction and moves downward. At this time, the sealing block 7 will move downward, and gas will be injected into the hollow cylinder 6 through the air inlet pipe 12 to prepare for the subsequent pneumatic cleaning of the infrared photoelectric sensor 4. This pneumatic cleaning unit can automatically complete the cleaning of the lens on the infrared photoelectric sensor 4.

[0027] It should be noted that: first, the exhaust speed of the air outlet head can be changed by adjusting the moving speed of the push plate 2; second, during the entire process, the branch pipe 11 will not block the lens.

[0028] As a preferred implementation in this embodiment, an alignment adjustment mechanism is further included to adjust and prolong the alignment time between the air outlet head 17 and the lens.

[0029] The purpose is to extend the pneumatic cleaning time of the lens and thus improve the cleaning effect of the lens.

[0030] As a preferred implementation in this embodiment, Figure 2 and Figure 4 As shown, the adjustment and alignment mechanism includes a rotating shaft 20 with a sheet-shaped gear 21 at the end, and a second tooth plate 22 mounted on the infrared photoelectric sensor 4;

[0031] The air outlet head 17 is connected to the branch pipe 11 through a hose 18 , and the air outlet head 17 and the branch pipe 11 are rotatably connected through a rotating shaft 20 . An elastic damping ring 19 is provided at the rotation connection between the rotating shaft 20 and the branch pipe 11 , and the elastic damping ring 19 is installed on the branch pipe 11 .

[0032] When the shading plate 3 moves, the air outlet head 17 will pneumatically clean the lens. As the shading plate 3 moves, its sheet gear 21 will contact the second tooth plate 22, and the second tooth plate 22 will be raised to drive the air outlet head 17 to rotate. At this time, the air outlet 2 of the air outlet head 17 is always aimed at the lens (that is, it is aimed for a period of time), which prolongs the cleaning time of the lens. After the second tooth plate 22 is separated from the sheet gear 21, the air outlet head 17 does not rotate. When the shading plate 3 moves in the opposite direction, the sheet gear 21 returns to its original position.

[0033] As a preferred implementation in this embodiment, Figure 4 As shown, the air outlet head 17 is a tapered structure that is wide at the top and narrow at the bottom.

[0034] This structure can speed up the discharge of gas, thereby improving the cleaning intensity of the lens.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A self-cleaning rotary pusher mechanism, comprising a drive system (5) mounted on a base plate (1), a push plate (2), and two infrared photoelectric sensors (4), wherein the push plate (2) is slidably mounted on the base plate (1), the drive system (5) drives the push plate (2) to move back and forth, and a light shielding plate (3) is mounted on the push plate (2), characterized in that: It also includes a pneumatic cleaning unit for pneumatically cleaning the lenses of the two infrared photoelectric sensors (4).

2. A self-cleaning rotary pusher mechanism according to claim 1, characterized in that: The pneumatic cleaning unit comprises two hollow cylinders (6) mounted on the light shielding plate (3), a threaded tube (9) being mounted on the hollow cylinder (6), and the threaded tube (9) being threadedly sleeved on the screw (8), the screw (8) being located at the end of the inner cavity of the hollow cylinder (6) and being rotatably provided with a sealing block (7), and an elastic ring which slides against the inner wall of the hollow cylinder (6) is provided on the outer surface of the sealing block (7), and a cylindrical gear (10) is fixed on the other end of the screw (8), an air inlet pipe (12) and an air outlet pipe (13) are provided on the hollow cylinder (6), an air inlet check valve (14) is mounted on the air inlet pipe (12), and an air outlet check valve (15) is mounted on the air outlet pipe (13), and two branch pipes (11) are obliquely downwardly provided on the air outlet pipe (13), and the air outlet heads (17) of the two branch pipes (11) are located above the lens of the infrared photoelectric sensor (4) and obliquely opposite to the lens; It also includes a first tooth plate (16) mounted on the lens of the infrared photoelectric sensor (4).

3. The self-cleaning rotary pusher mechanism according to claim 2, characterized in that: It also includes an alignment adjustment mechanism for adjusting and extending the alignment time between the air outlet head (17) and the lens.

4. The self-cleaning rotary pusher mechanism according to claim 3, characterized in that: The adjustment and alignment mechanism comprises a rotating shaft (20) with a sheet-shaped gear (21) at the end thereof, and a second tooth plate (22) mounted on the infrared photoelectric sensor (4); The air outlet head (17) is connected to the branch pipe (11) via a hose (18), and the air outlet head (17) and the branch pipe (11) are rotatably connected via the rotating shaft (20). An elastic damping ring (19) is provided at the rotational connection between the rotating shaft (20) and the branch pipe (11), and the elastic damping ring (19) is mounted on the branch pipe (11).

5. The self-cleaning rotary pusher mechanism according to claim 2, characterized in that: The air outlet head (17) is a conical structure that is wide at the top and narrow at the bottom.

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