Porous part leak detection tool

Abstract

The utility model discloses a leak detection tool for a porous part, and belongs to the technical field of workpiece detection. Comprising a workbench provided with a laser array, and a light sensing plate corresponding to the laser array is arranged above the workbench; the front side and the rear side of the workbench are provided with jacking pieces extending inwards, and the left side of the workbench is provided with an end blocking piece. According to the utility model, a laser detection mode is adopted, so that the device can be adapted to detection of most of hole sites, has a good application range, and can realize automatic detection.

Description

Technical Field

[0001] The utility model relates to the technical field of workpiece detection, in particular to a leak detection tool for porous parts. Background Art

[0002] During the stamping or drilling process of parts with holes, unusual leaks can occur. To ensure part quality, most manufacturers assign inspectors to perform visual inspections to filter out any missing holes. This is not a problem for parts with a small number of holes, but with dozens of holes, visual inspections are inefficient and prone to omissions. Therefore, tooling has been designed to assist with this inspection.

[0003] For example, patent application number "CN201920836463.X" discloses a tool for detecting missing punching holes in porous parts, including a fixing seat, a matching plate, a detection pin, a detection switch, and an alarm. By corresponding the detection pin to the prefabricated hole, the detection switch is correspondingly set and electrically connected to the alarm. This can effectively detect whether the part has a missing punching hole. Patent application number "CN202022283278.8" discloses a rapid leak detection fixture. By evenly fixing multiple measuring needles, it can quickly detect leaking holes and porous parts with foreign matter in the holes. The position of the measuring needles is adjustable, so it can be used to meet the needs of parts with different hole positions.

[0004] All of the above devices can assist in leak detection, and most tooling currently on the market uses positioning components that fit the openings. However, their use is quite limited; they require the use of detection pins and measuring needles in various layouts and configurations, depending on the specific openings on the parts, or require the use of corresponding structures to adjust the detection pins and measuring needles, resulting in a relatively complex structure. Utility Model Content

[0005] The utility model aims to solve the problem of relatively large limitations in leak detection in the prior art and proposes a leak detection tool for porous parts.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A porous parts leak detection tool comprises a workbench provided with a laser array, and a light-sensing plate corresponding to the laser array is provided above the workbench;

[0008] The front and rear sides of the workbench are provided with inwardly extending pressing pieces, and the left side is provided with an end stop piece.

[0009] In some embodiments, the workbench is a trapezoidal structure, with slopes provided on its inlet and outlet sides and vertical guard edges provided on its front and rear sides.

[0010] In some embodiments, the light-sensing plate is installed above the workbench through a column.

[0011] In some embodiments, a light-blocking edge is provided below the light-sensing plate.

[0012] In some embodiments, the pressing member includes: a telescopic cylinder, and a push plate arranged at the moving end of the telescopic cylinder.

[0013] In some embodiments, a plurality of pressing members are provided, and are arranged from the middle position of the workbench to the inlet side.

[0014] In some embodiments, the end stop comprises: a cylinder group disposed above the upper end of the workbench, and a lifting baffle disposed at the movable end of the cylinder group;

[0015] During operation, the lifting baffle contacts the upper surface of the workbench downward.

[0016] In some embodiments, a crossbeam is provided above the outlet side of the workbench, and the cylinder group is mounted on the crossbeam;

[0017] The cylinder group consists of no less than two cylinders arranged in parallel.

[0018] In some embodiments, the lifting baffle is arranged in a slotted beam at the end of the cylinder group to slide and rise;

[0019] Motors are respectively provided at both ends of the slotted beam, and the motors are transmission-connected with screw rods. Threaded sleeves cooperating with the screw rods are fixedly provided at both ends of the lifting baffle.

[0020] In some embodiments, an air blowing assembly is further provided on the inner side of the end stop;

[0021] The air blowing assembly includes: an air collecting pipe, and air holes arranged in an array on the air collecting pipe and inclined downward;

[0022] The gas collecting pipe is connected to an external gas source through an air supply pipe.

[0023] Compared with the prior art, the present invention provides a porous parts leak detection tool with the following beneficial effects.

[0024] 1. The utility model adopts the form of laser detection, which can adapt to most hole position detection, has a wide range of applications, and can realize automatic detection.

[0025] Other advantages, objectives and features of the present invention will be described in the following description to some extent; and will be apparent to those skilled in the art based on an examination of the following; or may be taught from the practice of the present invention to some extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the inlet side structure of the utility model.

[0027] Figure 2 This is a schematic diagram of the outlet side structure of the present utility model.

[0028] Figure 3 Schematic diagram of the state of removing the light-sensitive plate.

[0029] Figure 4 for Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0030] Figure 5 Schematic diagram of the lifting baffle in the lifted state.

[0031] Figure 6 for Figure 5 Schematic diagram of the enlarged structure at point B in the middle.

[0032] Figure 7 Schematic diagram of the lower structure of the photosensitive plate.

[0033] Figure 8 This is a structural diagram of the workbench.

[0034] Figure 9 Schematic diagram of the structure of the end stop.

[0035] Figure 10 Schematic diagram of the slotted beam structure.

[0036] Figure 11 Schematic diagram of the lower structure of the slotted beam.

[0037] In the picture:

[0038] 1. Laser array;

[0039] 2. Workbench;

[0040] 21. Slope; 22. Vertical edge; 23. Crossbeam;

[0041] 3. Light-sensitive board;

[0042] 31. Pillar; 32. Light blocking edge;

[0043] 4. Top pressure piece;

[0044] 41. Telescopic cylinder; 42. Push plate;

[0045] 5. End stop;

[0046] 51. Cylinder group; 52. Lifting baffle; 53. Slotted beam;

[0047] 54. Motor; 55. Screw; 56. Threaded sleeve;

[0048] 6. Air blowing assembly;

[0049] 61. Gas collecting pipe; 62. Air hole; 63. Gas supply pipe. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0051] Reference Figure 1-11 A leak detection tool for porous parts includes a workbench 2 provided with a laser array 1, and a light-sensitive plate 3 corresponding to the laser array 1 is provided above the workbench 2.

[0052] When in use, place the porous parts to be inspected on the workbench; determine whether there is an open hole through laser emission and reception sensing; if the sensing point does not correspond one-to-one with the preset point, it means there is a leak; and issue an alarm in real time to provide a reminder.

[0053] The laser array 1 is composed of multiple rows and columns. The laser emission points can be very small, and the densely distributed laser points can meet most multi-hole detection needs. Furthermore, the laser array is controlled by a computer, and the corresponding laser points and sensing areas are activated according to the hole location of the part.

[0054] It should be noted that the laser array 1 is embedded in the workbench 2; for the detection of some parts with unconventional shapes, the laser array corresponding to the hole position can also be customized.

[0055] Preferably, a high-transmittance flat glass is provided above the laser array 1 to reduce damage and influence of parts on the laser array 1 .

[0056] like Figure 1 、 2 As shown, the light-sensing plate 3 is installed above the workbench 2 through the column 31; its height does not need to be set too high, and it can meet the normal entry and exit of parts.

[0057] Preferably, a light blocking edge 32 is provided below the light sensing plate 3; Figure 1 、 2 As shown in , 7, forming a side enclosure can reduce the impact of the external environment on the light perception.

[0058] It should be noted that in order to cooperate with the inspection, the incoming parts also need to be accurately positioned.

[0059] Correspondingly, inwardly extending pressing members 4 are provided on the front and rear sides of the workbench 2, and an end stop 5 is provided on the left side, so as to realize pressing and limiting of the parts from three positions.

[0060] Preferably, the workbench 2 is a trapezoidal structure, with slopes 21 provided on the inlet and outlet sides and vertical retaining edges 22 provided on the front and rear sides; thereby, it is convenient for moving parts in and out, and it is more convenient to set the top pressure piece 4 and the end retaining piece 5 structure.

[0061] In some embodiments, the pressing member 4 includes a telescopic cylinder 41 and a push plate 42 provided at the moving end of the telescopic cylinder 41 .

[0062] It can be understood that the front and rear end pressing parts 4 are set as a group and are controlled independently (generally, the movement amount is the same to center the parts); according to the pressing position and width of the parts, the telescopic cylinder 41 is controlled to drive the push plate 42 to press the parts.

[0063] There are multiple pressing members 4 , which are arranged from the middle position of the workbench 2 to the inlet side.

[0064] like Figure 3 As shown, three groups of pressing members 4 are provided; among them, optionally, the relative distance of a group of pressing members 4 close to the inlet side is larger, forming a flared guide; further, the corresponding push plate 42 can be set to an outward-flashing arc shape, which is more convenient for guiding.

[0065] In some embodiments, the end stop 5 includes: a cylinder group 51 arranged above the upper end of the workbench 2 , and a lifting baffle 52 arranged at the moving end of the cylinder group 51 .

[0066] like Figure 3 、 4 As shown, the cylinder group 51 is positioned high and does not affect the movement of the parts; accordingly, in order to ensure that the parts can be blocked, a lifting baffle 52 is provided; during operation, the lifting baffle 52 contacts the upper surface of the workbench 2 downward to block the parts.

[0067] Preferably, a crossbeam 23 is provided above the outlet side of the workbench 2, and the cylinder group 51 is mounted on the crossbeam 23; Figure 3 、 5 As shown in Figures 8 and 9, the lower end surface of the beam 23 is higher than the height of "the upper end of the workbench 2 + the thickness of conventional parts".

[0068] In addition, the cylinder group 51 is composed of no less than two cylinders arranged in parallel to ensure good balance.

[0069] In some embodiments, the lifting baffle 52 is arranged in a slotted beam 53 at the end of the cylinder group 51 to slide and rise and fall; accordingly, motors 54 are respectively provided at both ends of the slotted beam 53, and the motor 54 is connected to a screw rod 55 for transmission, and threaded sleeves 56 that cooperate with the screw rod 55 are fixedly provided at both ends of the lifting baffle 52.

[0070] When in use, the motor 54 drives the screw rod 55 to drive the movement of the lifting baffle 52.

[0071] It is understandable that the length of the slotted beam 53 is greater than the maximum width of the parts allowed to be inspected; thus, the screw rods 55 on both sides will not affect normal operation.

[0072] In some embodiments, an air blowing assembly 6 is further provided on the inner side of the end stop 5 to clean the working area.

[0073] Specifically, the blowing assembly 6 includes: an air collecting pipe 61, and an array of air holes 62 arranged on the air collecting pipe 61 and inclined downward; wherein, the air collecting pipe 61 is fixed on the inner end surface of the end stop 5, and the air collecting pipe 61 is connected to the air supply pipe 63 to be connected to the external air source.

[0074] It is understandable that during air blowing cleaning, the cylinder group 51 moves to have a larger coverage area (the movement of the cylinder group 51 cannot cover the entire workbench).

[0075] When the present invention is used, the working positions of the top pressure piece 4 and the end stopper 5 are pre-set according to the data of the part to be inspected, and the laser points to be turned on are set accordingly; the part is sent to the top of the workbench 2 by a mechanism such as a robotic arm, and is positioned and clamped by the top pressure piece 4 and the end stopper 5; then, the laser array 1 is started to detect whether there is a leak through induction; after the inspection is completed, the part is taken out from the left or right side, and the inspection operation of the next part begins.

[0076] In the present invention, laser detection is adopted, and the laser array 1 can adapt to most hole position detections, has a wide range of applications, and can realize automatic detection.

[0077] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0078] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0079] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A leak detection tool for porous parts, characterized in that: It comprises a workbench (2) provided with a laser array (1), and a light-sensing plate (3) corresponding to the laser array (1) is provided above the workbench (2); The front and rear sides of the workbench (2) are provided with inwardly extending pressing pieces (4), and the left side is provided with an end stop (5).

2. The porous parts leak detection tool according to claim 1, characterized in that: The workbench (2) is a trapezoidal structure, with slopes (21) provided on its inlet and outlet sides, and vertical retaining edges (22) provided on its front and rear sides.

3. The porous parts leak detection tool according to claim 1, characterized in that: The light-sensing plate (3) is installed above the workbench (2) via a column (31).

4. The porous parts leak detection tool according to claim 1, characterized in that: A light-blocking edge (32) is provided below the light-sensing plate (3).

5. The porous parts leak detection tool according to claim 1, characterized in that: The pressing member (4) comprises a telescopic cylinder (41) and a push plate (42) arranged at the moving end of the telescopic cylinder (41).

6. The porous parts leak detection tool according to claim 1, characterized in that: A plurality of pressing members (4) are provided, and are arranged from the middle position of the workbench (2) toward the inlet side.

7. The porous parts leak detection tool according to claim 1, characterized in that: The end stopper (5) comprises: a cylinder group (51) arranged above the upper end of the workbench (2), and a lifting baffle (52) arranged at the movable end of the cylinder group (51); During operation, the lifting baffle (52) contacts the upper surface of the workbench (2) downward.

8. The porous parts leak detection tool according to claim 7, characterized in that: A crossbeam (23) is provided above the outlet side of the workbench (2), and the cylinder group (51) is mounted on the crossbeam (23); The cylinder group (51) consists of no less than two cylinders arranged in parallel.

9. The porous parts leak detection tool according to claim 7, characterized in that: The lifting baffle (52) is arranged in a slotted beam (53) at the end of the cylinder group (51) and is slidably lifted and lowered; Motors (54) are respectively provided at both ends of the slotted beam (53), and the motor (54) is transmission-connected to a screw rod (55). Threaded sleeves (56) cooperating with the screw rod (55) are fixedly provided at both ends of the lifting baffle (52).

10. The porous parts leak detection tool according to claim 1, characterized in that: An air blowing component (6) is also provided on the inner side of the end stop (5); The air blowing assembly (6) comprises: an air collecting pipe (61), and air holes (62) arranged in an array on the air collecting pipe (61) and slanting downward; The gas collecting pipe (61) is connected to a gas supply pipe (63) and connected to an external gas source.

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