Automatic assembly and detection system for pressing pin of large gear of windscreen wiper

Abstract

The invention relates to an automatic assembly and detection system for a pressing pin of a windscreen wiper bull gear, which can efficiently and orderly complete pressing, automatic feeding and assembly of the windscreen wiper bull gear, a straight pin and a plastic cap, is automatic in the whole process, is reasonable and orderly in each process, and can detect after the straight pin and the plastic cap are mounted, so that the production efficiency is improved. Meanwhile, the appearance of a plastic cap can be detected, it is ensured that a final finished product meets the use requirement, efficiency and precision are high, and the labor cost is reduced; a spherical pressing plate and a spherical connecting plate are arranged on the press-fitting mechanism, and the spherical connecting plate rotates on the spherical pressing plate so that an upper positioning plate can rotate by a certain angle on the vertical face; when the plane pressing plate makes contact with the limiting piece, the plane pressing plate can be automatically adjusted to be in a horizontal state through the spherical pressing plate and the spherical connecting plate, so that the plane pressing plate can be tightly attached to the limiting piece, the large gear and the pin are normally pressed, and part damage caused by errors in large gear pressing is avoided; and the influence of the vertical mounting precision of the die on large gear press fitting is eliminated.

Description

Technical Field

[0001] The present invention relates to the field of automotive parts assembly, and more particularly to an automated system for detecting the assembly of a wiper large gear and a press pin. Background Art

[0002] Currently, the measurement and assembly of the wiper large gear, the straight pin and the plastic cap are generally carried out manually, and multiple inspections are required in the middle. Manual assembly and inspection are not intuitive enough for judging unqualified products, with low precision, and it is easy to get fatigued during long-term operation. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an automated system for detecting the assembly of a wiper large gear and a press pin that is convenient and has high precision in view of the above deficiencies.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions:

[0005] An automated system for detecting the assembly of a wiper large gear and a press pin, comprising a turntable. Along the circumferential direction of the turntable, a straight pin feeding mechanism, a large gear feeding mechanism, a pressing mechanism, a first height detection mechanism, a plastic cap installation mechanism, a second height detection mechanism, a finished product discharging mechanism and a finished product appearance detection mechanism are sequentially arranged in the rotation direction; a plurality of jigs are evenly arranged on the inner side of the edge of the upper surface of the turntable, and the jigs are used for placing the straight pin and the large gear. The turntable is used to drive the jigs to pass through the straight pin feeding mechanism, the large gear feeding mechanism, the pressing mechanism, the first height detection mechanism, the plastic cap installation mechanism, the second height detection mechanism, the finished product discharging mechanism in sequence at a uniform speed and stay for a preset time directly below / right in front of these mechanisms;

[0006] The large gear feeding mechanism is used for clamping a large gear into the large gear placement groove of the jig on the turntable directly below at every preset time;

[0007] The straight pin feeding mechanism is used for conveying a straight pin into the straight pin installation hole of the large gear on the jig on the turntable right in front through a hollow air pipe at every preset time;

[0008] The pressing mechanism is used for pressing the large gear onto the straight pin to obtain a semi-finished product;

[0009] The first height detection mechanism is used for detecting the height of the straight pin on the semi-finished product and judging whether the pressing is qualified. If it is qualified, the plastic cap installation mechanism, the second height detection mechanism, the finished product discharging mechanism and the finished product appearance detection mechanism will work normally in the next step. If it is unqualified, the plastic cap installation mechanism, the second height detection mechanism and the finished product appearance detection mechanism will pause once. After the turntable drives the unqualified semi-finished product to be directly below the finished product discharging mechanism, the finished product discharging mechanism directly clamps the unqualified semi-finished product into the waste bin;

[0010] The plastic cap installation mechanism is used to install the plastic cap onto the semi-finished product to obtain the finished product;

[0011] The second height detection mechanism is used to detect the height of the plastic cap on the finished product. If it is qualified, the finished product feeding mechanism will clamp the finished product to the detection position directly in front of the finished product appearance detection mechanism, and the finished product appearance detection mechanism will work normally. Otherwise, the finished product feeding mechanism will directly clamp the unqualified finished product to the waste bin;

[0012] The finished product appearance detection mechanism is used to detect whether the plastic cap on the finished product at the detection position is damaged. If it is damaged, the finished product is judged to be unqualified. Otherwise, the finished product is judged to be qualified. The finished product feeding mechanism is used to clamp the unqualified finished product to the waste bin and clamp the qualified finished product to the finished product box.

[0013] Furthermore, the direct sales feeding mechanism includes a sorting table, a connecting channel, a translation mechanism, a hollow air pipe and an air pump. The sorting table is used to convey the direct sales through the sorting table in a single row in a fixed direction into the connecting channel. A translation block is arranged at the front end of the connecting channel, and a direct sales placement groove is arranged on the translation block. The translation mechanism is used to drive the translation block to reciprocate between the front end of the connecting channel and the inlet end of the hollow air pipe, and sequentially convey the direct sales at the front end of the connecting channel to the inlet end of the hollow air pipe one by one. The air pump is used to convey the direct sales at the inlet end through the hollow air pipe to the direct sales positioning block on the fixture on the front turntable one by one.

[0014] Furthermore, the large gear feeding mechanism includes a magazine feeding rack, a first pushing mechanism, a second pushing mechanism and a clamping mechanism. The magazine feeding rack is used to stack and place the large gears. The feeding position is directly below the large gear detection mechanism. The first pushing mechanism is used to push the large gear at the bottom of the magazine feeding rack to the feeding position. The second pushing mechanism is used to push the detected large gear at the feeding position to directly below the clamping mechanism. The clamping mechanism is used to clamp the large gear directly below to the large gear placement groove on the fixture on the turntable.

[0015] Furthermore, the finished product appearance detection mechanism is used to surround the detection position for 360° to visually photograph and identify the plastic cap, and judge whether the plastic cap of the finished product is damaged by comparing it with the standard plastic cap picture.

[0016] Further, the press head of the press-fitting mechanism includes an upper positioning plate, a limiting plate, a spherical pressing plate and a spherical connecting plate. A limiting plate fixedly connected to the output end of an external press is horizontally arranged above the upper positioning plate. A spherical pressing plate is arranged in the middle of the lower surface of the limiting plate. A spherical connecting plate that is in spherical sliding connection with the spherical pressing plate is arranged on the upper surface of the upper positioning plate. One of the spherical pressing plate and the spherical connecting plate is concave and the other is convex. The spherical connecting plate slides on the spherical pressing plate, enabling the upper positioning plate to have flexibility in the vertical plane. The four corners of the limiting plate are movably connected to the upper positioning plate through equal-height columns, and there is a gap between the equal-height columns and the upper positioning plate. During press-fitting, the relative position between the upper positioning plate and the limiting plate is determined by the spherical pressing plate and the spherical connecting plate. A flat pressing plate for pressing the straight pin and the large gear together is arranged on the lower surface of the upper positioning plate.

[0017] The beneficial effects of the present invention are as follows: The present invention can efficiently and orderly complete the automatic feeding and assembly of press-fitting the large wiper gear, the straight pin and the plastic cap. The whole process of the present invention is automated, and each process is reasonable and orderly. After installing the straight pin and the plastic cap, inspections are carried out, and at the same time, the appearance of the plastic cap is also inspected to ensure that the final product meets the usage requirements. It has high efficiency and high precision, reducing labor costs. A self-centering structure is adopted on the press-fitting mechanism. By setting the spherical pressing plate and the spherical connecting plate, the spherical connecting plate rotates on the spherical pressing plate, enabling the upper positioning plate to rotate a certain angle in the vertical plane. If there is a certain error in the vertical installation accuracy between the upper positioning plate and the lower positioning plate, when the flat pressing plate contacts the limiting part, it can automatically adjust the flat pressing plate to a horizontal state through the spherical pressing plate and the spherical connecting plate, enabling the flat pressing plate to closely fit the limiting part, and normally press-fitting the large gear and the pin, avoiding mistakes in the press-fitting of the large gear that may cause part damage, and eliminating the influence of the vertical installation accuracy of the mold on the press-fitting of the large gear. Description of the Drawings

[0018] Figure 1 It is a general schematic diagram of one angle of the present invention;

[0019] Figure 2 It is a general schematic diagram of another angle of the present invention;

[0020] Figure 3 It is a structural schematic diagram of the straight-pin feeding mechanism;

[0021] Figure 4 It is a structural schematic diagram of the large-gear feeding mechanism;

[0022] Figure 5 It is a structural schematic diagram of the press head of the press-fitting mechanism;

[0023] Figure 6 It is a structural schematic diagram of the assembled finished product.

[0024] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0025] 1. Turntable; 2. Direct pin feeding mechanism; 3. Large gear feeding mechanism; 4. Press-fitting mechanism; 5. First height detection mechanism; 6. Plastic cap installation mechanism; 7. Second height detection mechanism; 8. Finished product discharging mechanism; 9. Finished product appearance detection mechanism; 10. Large gear; 11. Direct pin; 12. Plastic cap; 21. Sorting table; 22. Connection channel; 23. Translation mechanism; 31. Magazine feeding rack; 32. First pushing mechanism; 33. Second pushing mechanism; 34. Clamping mechanism; 41. Upper positioning plate; 42. Limiting plate; 43. Spherical pressing plate; 44. Spherical connecting plate; 45. Equal-height column; 46. Flat pressing plate. Detailed implementation manners

[0026] The principles and features of the present invention will be described below with reference to the attached drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0027] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the attached drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0028] As Figures 1-6 shown, an automated system for press-fitting, assembling and detecting a windshield wiper large gear includes a turntable 1. Along the circumferential direction of the outer periphery of the turntable 1 in the rotation direction, a direct pin feeding mechanism 2, a large gear feeding mechanism 3, a press-fitting mechanism 4, a first height detection mechanism 5, a plastic cap installation mechanism 6, a second height detection mechanism 7, a finished product discharging mechanism 8 and a finished product appearance detection mechanism 9 are sequentially arranged; a plurality of jigs are evenly arranged on the inner side of the edge of the upper surface of the turntable 1. The jigs are used for placing the direct pin 11 and the large gear 10. The turntable 1 is used for driving the jigs to pass sequentially through the direct pin feeding mechanism 2, the large gear feeding mechanism 3, the press-fitting mechanism 4, the first height detection mechanism 5, the plastic cap installation mechanism 6, the second height detection mechanism 7, the finished product discharging mechanism 8 at a uniform speed and staying for a preset time directly below / directly in front of these mechanisms;

[0029] The large gear feeding mechanism 3 is used for clamping a large gear 10 into the large gear placement groove of the jig on the turntable 1 directly below at every preset time;

[0030] The direct pin feeding mechanism 2 is used for conveying a direct pin 11 into the direct pin installation hole of the large gear 10 on the jig on the turntable 1 directly in front through a hollow air pipe at every preset time;

[0031] The press-fitting mechanism 4 is used to press-fit the large gear 10 onto the straight pin 11 to obtain a semi-finished product;

[0032] The first height detection mechanism 5 is used to detect the height of the straight pin 11 on the semi-finished product and determine whether the press-fitting is qualified. If it is qualified, the plastic cap installation mechanism 6, the second height detection mechanism 7, the finished product discharging mechanism 8, and the finished product appearance detection mechanism 9 will work normally in the next step. If it is unqualified, the plastic cap installation mechanism 6, the second height detection mechanism 7, and the finished product appearance detection mechanism 9 will pause once. After the turntable 1 drives the unqualified semi-finished product to be directly below the finished product discharging mechanism 8, the finished product discharging mechanism 8 will directly clamp the unqualified semi-finished product into the waste bin;

[0033] The plastic cap installation mechanism 6 is used to install the plastic cap 12 onto the semi-finished product to obtain a finished product;

[0034] The second height detection mechanism 7 is used to detect the height of the plastic cap 12 on the finished product. If it is qualified, the finished product discharging mechanism 8 will clamp the finished product to the detection position directly in front of the finished product appearance detection mechanism 9, and the finished product appearance detection mechanism 9 will work normally. Otherwise, the finished product discharging mechanism 8 will directly clamp the unqualified finished product into the waste bin;

[0035] The finished product appearance detection mechanism 9 is used to detect whether the outer shape of the plastic cap 12 on the finished product at the detection position is damaged. If it is damaged, it is judged that the finished product is unqualified. Otherwise, it is judged that the finished product is qualified. The finished product discharging mechanism 8 is used to clamp the unqualified finished product into the waste bin and clamp the qualified finished product into the finished product box.

[0036] As an implementation manner, the straight pin feeding mechanism 2 includes a sorting table 21, a connection channel 22, a translation mechanism 23, a hollow air pipe, and an air pump. The sorting table 21 is used to convey the straight pins 11 one by one in a fixed direction in a row into the connection channel 22 through the sorting table 21. A translation block is provided at the front end of the connection channel 22, and a straight pin placement groove is provided on the translation block. The translation mechanism 23 is used to drive the translation block to reciprocate between the front end of the connection channel 22 and the inlet end of the hollow air pipe, and convey the straight pin 11 at the forefront of the connection channel 22 into the inlet end of the hollow air pipe one by one. The air pump is used to convey the straight pins 11 at the inlet end into the straight pin positioning blocks of the fixtures on the turntable 1 directly in front through the hollow air pipe one by one.

[0037] As an implementation manner, the large gear feeding mechanism 3 includes a magazine feeding rack 31, a first pushing mechanism 32, a second pushing mechanism 33 and a clamping mechanism 34. The magazine feeding rack 31 is used for stacking and placing large gears 10. The position directly below the large gear 10 detection mechanism is the feeding position. The first pushing mechanism 32 is used to push the lowermost large gear 10 on the magazine feeding rack 31 to the feeding position. The second pushing mechanism 33 is used to push the detected large gear 10 at the feeding position to directly below the clamping mechanism 34. The clamping mechanism 34 is used to clamp the large gear 10 directly below it into the large gear placement groove on the fixture on the turntable 1.

[0038] As an implementation manner, the finished product appearance detection mechanism 9 is used to surround the finished product in a 360° circle, perform visual shooting and recognition on the plastic cap 12, and determine whether the finished plastic cap 12 is damaged by comparing it with the picture of the standard plastic cap 12.

[0039] As an implementation manner, the pressing head of the pressing mechanism 4 includes an upper positioning plate 41, a limiting plate 42, a spherical pressing plate 43 and a spherical connecting plate 44. A limiting plate 42 fixedly connected to the output end of an external press is horizontally arranged above the upper positioning plate 41. A spherical pressing plate 43 is arranged in the middle of the lower surface of the limiting plate 42. A spherical connecting plate 44 that is spherically slidably connected to the spherical pressing plate 43 is arranged on the upper surface of the upper positioning plate 41. One of the spherical pressing plate 43 and the spherical connecting plate 44 is a concave surface and the other is a convex surface. The spherical connecting plate 44 slides on the spherical pressing plate 43 so that the upper positioning plate 41 has flexibility in the vertical plane. The four corners of the limiting plate 42 are movably connected to the upper positioning plate 41 through equal-height columns 45, and there is a gap between the equal-height columns 45 and the upper positioning plate 41. When pressing, the relative position between the upper positioning plate 41 and the limiting plate 42 is determined by the spherical pressing plate 43 and the spherical connecting plate 44. A flat pressing plate 46 for pressing the straight pin 11 and the large gear 10 together is arranged on the lower surface of the upper positioning plate 41.

[0040] The working process of the present invention is as follows:

[0041] The straight pin feeding mechanism conveys a straight pin to the straight pin positioning block on the fixture on the turntable directly in front through a hollow air pipe at every preset time; the turntable rotates, driving all the fixtures to move one station;

[0042] The large gear feeding mechanism clamps a large gear into the large gear placement groove on the fixture on the turntable directly below it at every preset time, and the turntable rotates, driving all the fixtures to move one station;

[0043] The pressing mechanism presses the large gear and the straight pin to obtain a finished product;

[0044] The turntable continues to rotate, driving all the jigs to move one station. Then, the height detection mechanism 6 detects the height of the straight pin on the finished product and determines whether the press-fitting is qualified. If it is qualified, the plastic cap installation mechanism, the second height detection mechanism, the finished product blanking mechanism, and the finished product appearance detection mechanism will work normally in the next step. If it is unqualified, the plastic cap installation mechanism, the second height detection mechanism, and the finished product appearance detection mechanism will pause once. After the turntable drives the unqualified semi-finished product to directly below the finished product blanking mechanism, the finished product blanking mechanism will directly clamp the unqualified semi-finished product into the waste bin.

[0045] The plastic cap installation mechanism feeds materials through a vibrating table. There is a screening notch on the vibrating table, which can make the plastic caps that are not in the state of opening downward fall through the notch, ensuring that the plastic caps to be fed are in the state of opening downward, and clamping and installing the plastic caps one by one onto the semi-finished products on the jig directly below to obtain the finished products.

[0046] The second height detection mechanism detects the height of the plastic cap on the finished product. If it is qualified, after the jig moves to the next station, the finished product blanking mechanism will clamp the finished product to the detection position directly in front of the finished product appearance detection mechanism, and the finished product appearance detection mechanism will work normally. Otherwise, the finished product blanking mechanism will directly clamp the unqualified finished product into the waste bin.

[0047] The finished product appearance detection mechanism detects whether the outer shape of the plastic cap on the finished product at the detection position is damaged. If it is damaged, it is judged that the finished product is unqualified. Otherwise, it is judged that the finished product is qualified. The finished product blanking mechanism will clamp the unqualified finished product into the waste bin and clamp the qualified finished product into the finished product box.

[0048] The present invention can efficiently and orderly complete the automatic feeding and assembly of the windshield wiper large gear, straight pin, and plastic cap. The present invention is fully automated, and each process is reasonable and orderly. After installing the straight pin and plastic cap, inspections are carried out, and at the same time, the outer shape of the plastic cap is also inspected to ensure that the final finished product meets the usage requirements, with high efficiency and high precision, reducing the labor cost. On the press-fitting mechanism, by setting a spherical pressing plate and a spherical connecting plate, the spherical connecting plate rotates on the spherical pressing plate, enabling the upper positioning plate to rotate a certain angle in the vertical plane. If there is a certain error in the vertical installation accuracy between the upper positioning plate and the lower positioning plate, when the flat pressing plate contacts the limiting part, the flat pressing plate can be automatically adjusted to the horizontal state through the spherical pressing plate and the spherical connecting plate, so that the flat pressing plate can be closely attached to the limiting part, normally press-fitting the large gear and the pin, avoiding mistakes in the press-fitting of the large gear that may cause part damage, and eliminating the influence of the die vertical installation accuracy on the press-fitting of the large gear.

[0049] The above is an example of the best implementation mode of the present invention. The parts not described in detail are all common general knowledge of those of ordinary skill in the art. The protection scope of the present invention shall be subject to the content of the claims, and any equivalent transformation based on the technical inspiration of the present invention is also within the protection scope of the present invention.

Claims

1. An automatic detection system for assembling a wiper large gear press pin, characterized in that It includes a turntable. Along the circumferential direction of the turntable in the rotation direction, there are successively arranged a direct-sale feeding mechanism, a large gear feeding mechanism, a pressing mechanism, a first height detection mechanism, a plastic cap installation mechanism, a second height detection mechanism, a finished product discharging mechanism, and a finished product appearance detection mechanism; on the inner side of the edge of the upper surface of the turntable, a plurality of jigs are evenly arranged. The jigs are used to place direct-sales and large gears. The turntable is used to drive the jigs to pass successively through the direct-sale feeding mechanism, the large gear feeding mechanism, the pressing mechanism, the first height detection mechanism, the plastic cap installation mechanism, the second height detection mechanism, the finished product discharging mechanism at a uniform speed and stay for a preset time directly below / right in front of these mechanisms. The large gear feeding mechanism is used to clamp a large gear into the large gear placement groove of the jig on the turntable directly below at every preset time. The direct-sale feeding mechanism is used to convey a direct-sale into the direct-sale installation hole of the large gear on the jig on the turntable right in front through a hollow air pipe at every preset time. The pressing mechanism is used to press the large gear onto the direct-sale to obtain a semi-finished product. The first height detection mechanism is used to detect the height of the direct-sale on the semi-finished product and judge whether the pressing is qualified. If it is qualified, the plastic cap installation mechanism, the second height detection mechanism, the finished product discharging mechanism, and the finished product appearance detection mechanism will work normally in the next step. If it is unqualified, the plastic cap installation mechanism, the second height detection mechanism, and the finished product appearance detection mechanism will pause once. After the turntable drives the unqualified semi-finished product to be directly below the finished product discharging mechanism, the finished product discharging mechanism will directly clamp the unqualified semi-finished product into the waste bin. The plastic cap installation mechanism is used to install the plastic cap onto the semi-finished product to obtain a finished product. The second height detection mechanism is used to detect the height of the plastic cap on the finished product. If it is qualified, the finished product discharging mechanism will clamp the finished product to the detection position right in front of the finished product appearance detection mechanism, and the finished product appearance detection mechanism will work normally. Otherwise, the finished product discharging mechanism will directly clamp the unqualified finished product into the waste bin. The finished product appearance detection mechanism is used to detect whether the shape of the plastic cap on the finished product at the detection position is damaged. If it is damaged, it is judged that the finished product is unqualified. Otherwise, it is judged that the finished product is qualified. The finished product discharging mechanism is used to clamp the unqualified finished product into the waste bin and clamp the qualified finished product into the finished product box.

2. The automated system for detecting the assembly of the wiper large gear press pins according to claim 1, wherein The direct-sale feeding mechanism includes a sorting table, a connecting channel, a translation mechanism, a hollow air pipe, and an air pump. The sorting table is used to convey the direct-sales in a single row in a fixed direction into the connecting channel through the sorting table. A translation block is arranged at the front end of the connecting channel, and a direct-sale placement groove is arranged on the translation block. The translation mechanism is used to drive the translation block to reciprocate between the front end of the connecting channel and the inlet end of the hollow air pipe, and successively convey the direct-sale at the forefront of the connecting channel to the inlet end of the hollow air pipe one by one. The air pump is used to convey the direct-sales at the inlet end through the hollow air pipe to the direct-sale positioning block of the jig on the turntable right in front one by one.

3. The automated system for detecting the assembly of the wiper large gear press pins according to claim 1, wherein, The large gear loading mechanism includes a magazine loading rack, a first pushing mechanism, a second pushing mechanism, and a clamping mechanism. The magazine loading rack is used for stacking and placing large gears. The loading position is directly below the large gear detection mechanism. The first pushing mechanism is used to push the lowermost large gear on the magazine loading rack to the loading position. The second pushing mechanism is used to push the large gear after detection at the loading position to directly below the clamping mechanism. The clamping mechanism is used to clamp the large gear directly below it into the large gear placement groove on the fixture on the turntable.

4. The automated assembly and inspection system for the wiper large gear press pin according to claim 1, wherein The finished product appearance detection mechanism is used to surround the detection position 360° in a circle, perform visual shooting and recognition on the plastic cap, and determine whether the finished plastic cap is damaged by comparing it with the standard plastic cap picture.

5. The automated system for detecting the assembly of the wiper large gear press pins according to claim 1, characterized in that, The pressing head of the pressing mechanism includes an upper positioning plate, a limiting plate, a spherical pressing plate, and a spherical connecting plate. A limiting plate fixedly connected to the output end of an external press is horizontally arranged above the upper positioning plate. A spherical pressing plate is arranged in the middle of the lower surface of the limiting plate. A spherical connecting plate that is spherically slidably connected to the spherical pressing plate is arranged on the upper surface of the upper positioning plate. One of the spherical pressing plate and the spherical connecting plate is concave and the other is convex. The spherical connecting plate slides and cooperates on the spherical pressing plate, enabling the upper positioning plate to have flexibility in the vertical plane. The four corners of the limiting plate are movably connected to the upper positioning plate through equal-height columns, and there is a gap between the equal-height columns and the upper positioning plate. During pressing, the relative position between the upper positioning plate and the limiting plate is determined by the spherical pressing plate and the spherical connecting plate. A flat pressing plate for pressing and fitting the straight pin and the large gear is arranged on the lower surface of the upper positioning plate.

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