CN219253328U - Hinge hole detects frock - Google Patents

Abstract

The utility model discloses a hinge hole detection tool which comprises a sorting part, wherein the sorting part is formed with a conveying area, a pre-storing area and a falling area: the detection part is provided with a workpiece to be detected and a turnover mechanism; the detection part is positioned at the process downstream of the sorting part; the ball passes through the conveying area and sequentially passes through the pre-storing area and the falling area to be placed in the built-in pipeline of the workpiece to be detected; the turnover mechanism is provided with a turnover plate, a rotating shaft, a bottom fixing plate and a part of an air cylinder; the workpiece to be detected is arranged on the turnover plate; one side of the bottom of the turnover plate is connected with one end of the rotating shaft; the other end of the rotating shaft is arranged on the bottom fixing plate; the output end of one part of the air cylinder passes through the bottom fixing plate and is connected to one side of the turnover plate far away from the rotating shaft; one part of the air cylinder drives the turnover plate to rotate along the rotating shaft to form the turnover plate which is attached in parallel or inclined on the bottom fixing plate in a crossing way; the device structure is optimized, and convenient operation avoids the appearance that leads to the product disqualification phenomenon because of individual factor is unstable, further improves detection quality, promotes the product qualification rate.

Description

Hinge hole detects frock

Technical Field

The utility model relates to the technical field of automobile production equipment, in particular to a hinge hole detection tool.

Background

The automobile hinge is generally applied to an automobile door, an engine cover, a tail box cover and an oil tank cover of an automobile, and in the production and processing, hinge holes are also links needing to be detected, and the influence factors of gaps and height differences between the automobile door or other parts and side walls are analyzed by detecting the hinge precision, and are adjusted and modified accordingly; at present, a worker manually places a small ball for detection, the small ball is very small, a plurality of small balls are inconvenient to take at one time, the small balls need to be taken for several times, and when carelessness happens, the small ball falls on the ground, so that the detection leakage risk exists; meanwhile, the detection process is long in time, and the labor intensity of operators is high; the detection scheme is unstable, uniqueness cannot be achieved, the falling speed of the small ball can be influenced even without falling when the angles are different, and the purpose of effective detection cannot be achieved;

the Chinese patent publication No. CN206531439U discloses a door hinge hole detection tool fixed on a main detection tool of the whole vehicle interior and exterior trim, which comprises a plurality of detection pieces and detection sleeves corresponding to the detection pieces, wherein the detection pieces are provided with installation ends and detection ends, the installation ends are in threaded connection with the door hinge holes, the installation ends are provided with stop blocks for determining the distance of the installation ends entering the door hinge holes, the distance of the installation ends entering the door hinge holes is ensured to be an inherent value, the detection sleeves are provided with detection holes corresponding to the detection ends, the detection ends can pass through the detection holes, the detection sleeves are accurately fixed on the main detection tool of the whole vehicle interior and exterior trim, the position of the detection holes is ensured to be the theoretical precision of the door hinge holes, and when the center of the detection ends is coincident with the center of the detection holes, the gap between the detection ends and the detection holes is more than 3 mm; the device has simple structure and convenient operation, and can detect the deviation values of the door hinge holes in different directions;

chinese patent (publication No. CN 207593212U) discloses a device for detecting and preventing error of hole position of door hinge, which comprises a conveyer belt transported from back to front, a guide plate arranged left and right in the middle of the conveyer belt, a mounting seat arranged on the right side of the guide plate, a first laser sensor arranged on the top of the mounting seat for detecting left luminescence, a pedestal arranged on the front side of the conveyer belt, a clamping plate arranged left and right on the top of the pedestal, a right mounting block arranged on the front side of the pedestal, a second laser sensor arranged above the mounting block for detecting forward luminescence, and a second laser sensor arranged above the clamping plate, wherein the device realizes automatic detection and is efficient and rapid;

therefore, the device for detecting the steel ball balls by manually placing the steel balls is combined with the hinge holes of the automobile parts in the prior art, so that the problems that time and labor are wasted, the quality of a detection scheme is unstable and the detection purpose cannot be achieved exist, the structure is designed, the labor intensity of workers is reduced, the detection quality is improved, and the product percent of pass is further improved.

Disclosure of Invention

The utility model aims to provide a hinge hole detection tool which has the advantages of optimizing the structure, reducing the labor intensity of workers, improving the detection quality and further improving the qualification rate of products.

In order to achieve the above object, the present utility model provides the following technical solutions:

hinge hole detects frock, should detect the frock and be connected with external control ware, include:

sorting part, sorting part is formed with transport district, prestore district and whereabouts district:

the detection part is provided with a workpiece to be detected and a turnover mechanism;

the detection part is positioned at the downstream of the sorting part; wherein the method comprises the steps of

The ball passes through the conveying area and sequentially passes through the pre-storing area and the falling area to be placed in a built-in pipeline of the workpiece to be detected;

the turnover mechanism is provided with a turnover plate, a rotating shaft, a bottom fixing plate and a part of an air cylinder;

the workpiece to be detected is arranged on the turnover plate;

one side of the bottom of the turnover plate is connected with one end of the rotating shaft;

the other end of the rotating shaft is arranged on the bottom fixing plate;

the output end of one part of the air cylinder penetrates through the bottom fixing plate and is connected to one side, far away from the rotating shaft, of the overturning plate;

and one part of the air cylinder drives the turnover plate to rotate along the rotating shaft to form the turnover plate which is attached in parallel or inclined on the bottom fixing plate in a crossing way.

Further, the conveying section includes:

a first cylinder;

the upper surface of the fixed disc is inclined;

the fixed disc is arranged above the rotating disc;

the fixed disc and the rotating disc are positioned at the bottom of an inner cavity of one part of the cylinder;

the ball slides into the groove on the rotating disc through the fixed disc; and is also provided with

A connecting shaft is arranged below the rotating disc;

further comprises:

a conveyor belt and a motor;

the conveyor belt is respectively connected with the connecting shaft and the motor;

the motor drives the conveyor belt to move to form synchronous rotation of the connecting shaft so as to realize rotation of the rotating disc.

Further, the pre-stored area includes:

a second cylinder;

the two groups of sorting plates are distributed on two sides of the opening at the bottom of the second part of the cylinder body;

the first air cylinders are respectively in driving connection with the two groups of sorting plates; wherein the method comprises the steps of

A first position sensor and a second position sensor are distributed and installed on the second part of the cylinder body;

the first position sensor is positioned at the opening at the bottom of the two parts of the cylinder body and used for detecting signals of the sphere to be dropped;

the second position sensor is positioned above the first position sensor and is used for detecting a sphere signal finally falling into the two parts of the cylinder body.

Further, the drop zone includes:

a first pipe and a second pipe;

the first pipeline and the second pipeline are distributed below two sides of the bottom opening of the second part of the cylinder;

the first cylinder pushes the sorting plate open to form a sphere which rolls to the two sides to the first pipeline and the second pipeline through the opening at the bottom of the second part of the cylinder; wherein the method comprises the steps of

A third position sensor and a fourth position sensor are respectively arranged on the first pipeline and the second pipeline so as to monitor the position signals of the ball body; and

the second cylinder is in driving connection with the first pipeline and the second pipeline;

the second cylinder drives the first pipeline and the second pipeline to move towards the direction of the workpiece to be detected.

Furthermore, two groups of limit sensors are arranged on one part of the cylinder and used for monitoring the movement position signals of stretching and shrinking of the cylinder.

Further, an outlet at the lower end of the built-in pipeline of the workpiece to be detected is connected with a delivery pipe;

a recovery box is arranged below the delivery pipe;

photoelectric signal receivers are respectively arranged at the positions of the workpiece to be detected and the outlet of the delivery pipe; wherein the method comprises the steps of

The ball body slides into the recovery box through a built-in pipeline of the workpiece to be detected and a delivery pipe;

the photoelectric signal receiver receives detection signals inside the built-in pipeline of the workpiece to be detected, feeds the detection signals back to the controller and starts an alarm for alarming.

A ball inlet is formed in the outlet of the upper end of the built-in pipeline of the workpiece to be detected;

the second cylinder drives the first pipeline and the second pipeline to move to be connected with the ball inlet hole so as to enable the ball to fall into the built-in pipeline of the workpiece to be detected through the ball inlet hole.

In the technical scheme, the hinge hole detection tool has the following beneficial effects:

the hinge hole detection tool provided by the utility model has the advantages that the structure is optimized, the operation is convenient, the manual detection time is obviously reduced after the tool is provided, the phenomenon of unqualified products caused by instability of personal factors is avoided, the detection quality is further improved, and the product qualification rate is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

Fig. 1 is a schematic structural diagram of a sorting part in a hinge hole detection tool according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of FIG. 1;

fig. 3 is a schematic structural diagram of a detection part (before turning) in the hinge hole detection tool according to the embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a hinge hole detection tool (after a detection part is turned over) according to an embodiment of the present utility model;

FIG. 5 is an enlarged view at A of FIG. 4;

FIG. 6 is an enlarged view of the position A in FIG. 4 (schematic view of the first pipe, the second pipe and the upper opening of the built-in pipe of the workpiece to be inspected being coincident);

fig. 7 is a schematic diagram of a partial structure of a hinge hole detecting tool detecting part according to an embodiment of the present utility model;

FIG. 8 is a schematic structural view of a hinge hole detecting tool detecting part according to an embodiment of the present utility model;

fig. 9 is a schematic flow structure diagram of a hinge hole detection tool according to an embodiment of the present utility model.

Reference numerals illustrate:

1. a sorting section; 2. a detection unit; 3. a delivery tube; 4. a recovery box; 5. a ball inlet;

11. a conveying zone; 12. a pre-stored area; 13. a drop zone;

111. a first cylinder; 112. a fixed plate; 113. a rotating disc; 114. a groove; 115. a connecting shaft; 116. a conveyor belt; 117. a motor;

121. a second cylinder; 122. sorting plates; 123. a first cylinder; 124. a first position sensor; 125. a second position sensor;

131. a first pipe; 132. a second pipe; 133. a third position sensor; 134. a fourth position sensor; 135. a second cylinder;

21. a workpiece to be inspected; 22. a turnover mechanism;

221. a turnover plate; 222. a rotation shaft; 223. a bottom fixing plate; 224. a cylinder part.

Detailed Description

In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.

It should be noted that, as used herein, the terms "upper," "lower," "two sides," "bottom," "one end," "the other end," and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, merely for purposes of illustration and simplicity of description, similar expressions are used merely as terms of illustration, and do not indicate or imply that the apparatus or element in question must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model; furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

See fig. 1-9;

the hinge hole detection tool of the utility model is connected with an external controller, and comprises:

sorting section 1, sorting section 1 is formed with a conveying zone 11, a pre-storing zone 12 and a drop zone 13:

a detecting section 2, the detecting section 2 being mounted with a workpiece 21 to be inspected and a turnover mechanism 22;

the detection part 2 is positioned at the downstream of the process of the sorting part 1; wherein the method comprises the steps of

The spheres pass through the conveying area 11 and sequentially pass through the pre-storing area 12 and the falling area 13 to the built-in pipeline of the workpiece 21 to be detected;

the turning mechanism 22 has a turning plate 221, a rotation shaft 222, a bottom fixing plate 223, and a cylinder one 224;

the workpiece 21 to be inspected is disposed on the inversion plate 221;

one side of the bottom of the inversion plate 221 is connected to one end of the rotation shaft 222;

the other end of the rotation shaft 222 is mounted on the bottom fixing plate 223;

the output end of the first cylinder 224 passes through the bottom fixing plate 223 and is connected to a side of the flipping plate 221 away from the rotation shaft 222;

the cylinder part 224 drives the overturning plate 221 to rotate along the rotating shaft 222 so that the overturning plate 221 is attached to the bottom fixing plate 223 in parallel or obliquely in a crossing manner.

Specifically, the hinge hole detection tool provided by the utility model mainly comprises two parts, namely a sorting part 1 and a detection part 2, wherein the sorting part 1 is used for conveying spheres, the detection part 2 is provided with a workpiece 21 to be detected and a turnover mechanism 22, in the falling process of the spheres in the sorting part 1, the turnover mechanism 21 in the detection part 2 rotates to enable the workpiece 21 to be detected to correspond to the falling position of the spheres, and then the spheres fall into a built-in pipeline of the workpiece 21 to be detected, namely a hinge hole, and the whole detection flow is completed through the mutual cooperation of an external controller, a sensor for detecting signals and a receiver.

The transport zone 11 comprises:

a cylinder body portion 111;

the upper surface of the fixed disc 112 is inclined;

a rotating plate 113, the fixed plate 112 being disposed above the rotating plate 113;

the fixed disc 112 and the rotary disc 113 are positioned at the bottom of the inner cavity of the barrel body part 111;

the ball slides down into a groove 114 on the rotating disk 113 via the fixed disk 112; and is also provided with

A connecting shaft 115 is provided below the rotating plate 113;

further comprises:

a conveyor belt 116 and a motor 117;

the conveyor belt 116 is connected with the connecting shaft 115 and the motor 117 respectively;

the motor 117 drives the conveyor belt 116 to move to form the synchronous rotation of the connecting shaft 115 to realize the rotation of the rotating disc 113.

Specifically, the ball is put into the barrel body part 111, the ball slides down into the groove of the rotating disc 113 through the fixed disc 112, then the motor 117 is started to drive the conveying belt 116 to move, the conveying belt 116 is sleeved on the connecting shaft 115 of the rotating disc 113 at the same time, the connecting shaft 115 rotates under the driving of the conveying belt 116, namely, the rotating disc 113 synchronously rotates, and when the rotating disc 113 rotates, the ball in the groove 114 moves into the pre-storing area 12.

The pre-stored area 12 includes:

a second cylinder 121;

sorting plates 122, wherein two groups of sorting plates 122 are distributed on two sides of the opening at the bottom of the second barrel 121;

the first cylinders 123, the two groups of first cylinders 123 are respectively in driving connection with the two groups of sorting plates 122; wherein the method comprises the steps of

The first position sensor 124 and the second position sensor 125 are distributed and installed on the second cylinder 121;

the first position sensor 124 is positioned at the opening at the bottom of the second barrel 121 and is used for detecting signals of the sphere to be dropped;

the second position sensor 125 is located above the first position sensor 124 to detect the ball signal that finally falls into the barrel 121.

Specifically, the ball falls into the second barrel 121 after the rotating disc 113 rotates 180 °, the second barrel 121 is provided with two signal detection devices, namely a first position sensor 124 and a second position sensor 125, the first position sensor 124 is located at the bottom opening of the second barrel 121 and is used for detecting the signal of the ball to be fallen, the second position sensor 125 is located above the first position sensor 124, the installation position is the maximum storage amount of the ball, when the ball is insufficient, the second position sensor 125 does not detect the position information of the ball, at this time, the second position sensor 125 feeds back the signal to an external controller, the controller controls the motor 117 to start again and then pushes the ball in the first barrel 111 into the second barrel 121, and the first position sensor 124 is used in the same way as the above.

The drop zone 13 comprises:

a first pipe 131 and a second pipe 132;

the first pipeline 131 and the second pipeline 132 are distributed below two sides of the bottom opening of the second barrel 121;

the first cylinder 123 pushes the sorting plate 122 open to form a sphere which rolls to the two sides through the opening at the bottom of the second cylinder 121 and falls into the first pipeline 131 and the second pipeline 132; wherein the method comprises the steps of

A third position sensor 133 and a fourth position sensor 134 are respectively arranged on the first pipeline 131 and the second pipeline 132 to monitor the position signals of the ball; and

a second cylinder 135, the second cylinder 135 drivingly connecting the first pipe 131 and the second pipe 132;

the second cylinder 135 drives the first pipe 131 and the second pipe 132 to move toward the workpiece 21 to be inspected.

Specifically, after the first cylinder 123 pushes the sorting plate 122 open, the spheres in the second cylinder 121 enter the first pipeline 131 and the second pipeline 132 respectively, wherein the first pipeline 131 and the second pipeline 132 are respectively provided with a third position sensor 133 and a fourth position sensor 134 to monitor the position signal of the spheres, that is, whether the spheres enter the pipeline can be monitored in the whole process, if no feedback signal is sent to the controller, the controller starts the first cylinder 123 to push the sorting plate 122 open again, and the above steps are repeated.

Two sets of limit sensors are provided on one portion 224 of the cylinder to monitor the movement position signal of the extension and contraction.

The outlet of the lower end of the built-in pipeline of the workpiece 21 to be detected is connected with a delivery pipe 3;

a recovery box 4 is arranged below the delivery pipe 3;

photoelectric signal receivers are respectively arranged at the outlets of the workpiece 21 to be detected and the delivery pipe 3; wherein the method comprises the steps of

The ball slides into the recovery box 4 through the built-in pipeline of the workpiece 21 to be detected and the delivery pipe 3;

the photoelectric signal receiver receives detection signals inside the built-in pipeline of the workpiece 21 to be detected and feeds the detection signals back to the controller, and the alarm is started to give an alarm.

A ball inlet 5 is arranged at the outlet of the upper end of the built-in pipeline of the workpiece 21 to be detected;

the second cylinder 135 drives the first pipe 131 and the second pipe 132 to move to be connected with the ball inlet 5 so as to enable the ball to fall into the built-in pipe of the workpiece 21 to be inspected through the ball inlet 5.

Specifically, the turnover mechanism 22 in the detection part 2 is used for better detection, before turnover, the workpiece 21 to be detected is placed close to the horizontal, so that the movement of the sphere in the pipeline is not facilitated, the risk of detention of the pipeline is reduced, the feasibility of sphere detection is reduced, and before the detection of the hinge hole, the tool still needs a place of man-machine fit, so that the workpiece 21 to be detected before the detection of the hinge hole is placed horizontally;

further, when the turnover mechanism 22 turns over, the driving end of the first cylinder 224 is pushed out upwards to enable the turnover plate 221 to rotate around the rotation shaft 223, two groups of limiting sensors are arranged on the first cylinder 224 and used for monitoring the stretching and shrinking movement position signals of the turnover plate, namely limiting the maximum stretching and shrinking values of the first cylinder 224, when the first cylinder 224 drives the turnover plate 221 to rotate to the corresponding position, the limiting sensors transmit signals to an external controller, the external controller controls the first cylinder 224 to start and stop, when the turnover plate 221 turns over to stop at a certain angle, a certain distance is kept between the inlet of the built-in pipeline of the workpiece 21 to be detected and the first pipeline 131 and the second pipeline 132, at the moment, the second cylinder 135 drives the first pipeline 131 and the second pipeline 132 to move towards the workpiece 21 to be detected until the first pipeline 131 and the second pipeline 132 are respectively connected tightly with the corresponding ball inlet holes 5, the controller controls the balls to be discharged when the balls fall into the corresponding workpiece metal pipelines through the ball inlet holes 5.

The photoelectric signal receivers are distributed on the workpiece 21 to be detected and at the outlet of the delivery pipe 3, and when the ball body smoothly passes through the hinge hole to reach the recovery box 4, the photoelectric signal receivers feed back signals, which indicate that the inside of the hinge hole is smooth, no sundry residue exists, the hole wall is free from deformation, and the requirements are met; when no signal is received, the alarm alarms at the corresponding position to inform the operator of the corresponding position which does not pass the detection; finally, the used ball is detected, and a special collecting box is used for recycling, so that the ball can be used for a second time.

While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.

Claims (7)

1. Hinge hole detects frock, and this detects frock and external controller and is connected, its characterized in that includes:

sorting section (1), the sorting section (1) being formed with a conveying zone (11), a pre-storing zone (12) and a drop zone (13):

a detection unit (2), wherein the detection unit (2) is provided with a workpiece (21) to be detected and a turnover mechanism (22);

the detection part (2) is positioned at the downstream of the sorting part (1) in the process; wherein the method comprises the steps of

The ball passes through the conveying area (11) and sequentially passes through the pre-storing area (12) and the falling area (13) to be detected in the built-in pipeline of the workpiece (21);

the turnover mechanism (22) is provided with a turnover plate (221), a rotating shaft (222), a bottom fixing plate (223) and a cylinder one part (224);

the workpiece (21) to be detected is arranged on the overturning plate (221);

one side of the bottom of the turnover plate (221) is connected with one end of a rotating shaft (222);

the other end of the rotating shaft (222) is arranged on a bottom fixing plate (223);

the output end of the first cylinder (224) passes through the bottom fixing plate (223) and is connected to one side of the turnover plate (221) far away from the rotating shaft (222);

the cylinder part (224) drives the turnover plate (221) to rotate along the rotating shaft (222) to form that the turnover plate (221) is attached in parallel or inclined to the bottom fixing plate (223) in a crossing way.

2. Hinge hole detection tooling according to claim 1, characterized in that said conveying zone (11) comprises:

a cylinder body (111);

a fixed disk (112), wherein the upper surface of the fixed disk (112) is inclined;

a rotating disk (113), wherein the fixed disk (112) is arranged above the rotating disk (113);

the fixed disc (112) and the rotating disc (113) are positioned at the bottom of the inner cavity of the first cylinder body (111);

the ball slides into a groove (114) on the rotating disc (113) through the fixed disc (112); and is also provided with

A connecting shaft (115) is arranged below the rotating disc (113);

further comprises:

a conveyor belt (116) and a motor (117);

the conveyor belt (116) is respectively connected with the connecting shaft (115) and the motor (117);

the motor (117) drives the conveyor belt (116) to move to form a connecting shaft (115) to synchronously rotate so as to realize the rotation of the rotating disc (113).

3. The hinge hole detection tooling of claim 1, wherein the pre-stored area (12) comprises:

a second cylinder (121);

the sorting plates (122), two groups of sorting plates (122) are distributed on two sides of the opening at the bottom of the second barrel part (121);

the first air cylinders (123), the two groups of first air cylinders (123) are respectively connected with the two groups of sorting plates (122) in a driving way; wherein the method comprises the steps of

A first position sensor (124) and a second position sensor (125) are distributed and installed on the second cylinder body (121);

the first position sensor (124) is positioned at the opening at the bottom of the second barrel part (121) and is used for detecting signals of the sphere to be dropped;

the second position sensor (125) is located above the first position sensor (124) and is used for detecting a sphere signal finally falling into the barrel body two parts (121).

4. A hinge hole detection tooling according to claim 3, wherein the drop zone (13) comprises:

a first pipe (131) and a second pipe (132);

the first pipeline (131) and the second pipeline (132) are distributed below two sides of the bottom opening of the second barrel part (121);

the first cylinder (123) pushes away the sorting plate (122) to form a sphere which rolls to the two sides to the first pipeline (131) and the second pipeline (132) through the opening at the bottom of the second cylinder body (121); wherein the method comprises the steps of

A third position sensor (133) and a fourth position sensor (134) are respectively arranged on the first pipeline (131) and the second pipeline (132) so as to monitor a sphere position signal; and

a second cylinder (135), the second cylinder (135) drivingly connecting the first pipe (131) and the second pipe (132);

the second cylinder (135) drives the first pipeline (131) and the second pipeline (132) to move towards the to-be-detected workpiece (21).

5. The hinge hole inspection tool of claim 1, wherein:

two groups of limit sensors are arranged on one part (224) of the cylinder and used for monitoring the movement position signals of stretching and shrinking of the cylinder.

6. The hinge hole inspection tool of claim 1, wherein:

the outlet of the lower end of the built-in pipeline of the workpiece (21) to be detected is connected with a delivery pipe (3);

a recovery box (4) is arranged below the delivery pipe (3);

photoelectric signal receivers are respectively arranged at the outlets of the workpiece (21) to be detected and the delivery pipe (3); wherein the method comprises the steps of

The ball body slides into the recovery box (4) through a built-in pipeline of the workpiece (21) to be detected and the delivery pipe (3);

the photoelectric signal receiver receives detection signals inside the built-in pipeline of the workpiece (21) to be detected, feeds the detection signals back to the controller and starts an alarm to give an alarm.

7. The hinge hole inspection tool of claim 4, wherein:

a ball inlet (5) is arranged at the outlet of the upper end of the built-in pipeline of the workpiece (21) to be detected;

the second cylinder (135) drives the first pipeline (131) and the second pipeline (132) to move to be connected with the ball inlet hole (5) so as to enable the ball to fall into the built-in pipeline of the workpiece (21) to be detected through the ball inlet hole (5).

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