HP-RTM composite material upper cover detection tool leak detection prevention structure

Abstract

The utility model belongs to the technical field of detection tools, and particularly relates to a leak detection prevention structure of an HP-RTM composite material upper cover detection tool, which comprises a movable detection pin and a fixed detection pin sleeve, a vertical detection hole is arranged in the detection pin sleeve, the lower part of the detection pin can be inserted into the detection hole from top to bottom, a proximity switch sensor is arranged below the detection hole, and the proximity switch sensor is connected with the detection pin sleeve. The proximity switch sensor is transversely arranged, the detection head end of the proximity switch sensor faces the position under the detection hole, and the proximity switch sensor does not block the downward moving path of the bottom end of the detection pin. The detection pin sleeve is embedded in the detection base, and the upper end of the detection pin sleeve is exposed out of the upper surface of the detection base; according to the utility model, through the arrangement of the proximity switch sensor, the insertion state of the detection pin at the corresponding position can be detected in real time, each detection hole site is ensured to be detected, and missing detection is avoided; when one hole is not detected, the cylinder clamp cannot be opened; and a corresponding hole site number identifier is arranged beside each detection hole, so that the leak detection holes can be conveniently and quickly found.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of testing fixture, especially relates to a HP-RTM composite material upper cover testing fixture leak detection structure. BACKGROUND

[0002] With the rapid development of new energy vehicles, the requirement for vehicle light weight is higher and higher, and the composite material upper cover produced by HP-RTM (High Pressure Resin Transfer Molding) process is rapidly popularized due to its high strength, obvious weight reduction effect and other advantages. The assembly mode of the power battery pack upper cover and the lower box body is usually screw-based, and the upper cover is often assembled with more screw holes, generally about 60-100. In the traditional production process, after the upper cover is manufactured, dozens to hundreds of holes are detected one by one by manual detection with the help of a testing fixture. Due to the large number of hole positions, manual visual detection is limited by the resolution ability of the human eye and the fatigue degree of the detection personnel, and it is easy to miss detection, and it is not easy to detect whether the detection is missed, resulting in that the products not detected completely flow to the client end, causing loss.

[0003] Therefore, it is necessary to develop a HP-RTM composite material upper cover testing fixture leak detection structure which can effectively avoid missed hole detection. SUMMARY

[0004] The utility model discloses a kind of HP-RTM composite material upper cover testing fixture leak detection structures, can effectively avoid the occurrence of hole position missed detection, improve the accuracy and reliability of detection, improve detection efficiency simultaneously, meet the demand of large-scale production.

[0005] In order to realize the above technical purpose, the utility model adopts the following scheme:

[0006] A kind of HP-RTM composite material upper cover testing fixture leak detection structure, including movable detection pin and fixed detection pin sleeve, vertical detection hole is provided in the detection pin sleeve, the detection pin lower part can be inserted into detection hole from top to bottom, detection hole is provided with proximity switch sensor, the proximity switch sensor is placed horizontally and its detection head end is towards the directly below of detection hole, the proximity switch sensor is not blocked to the downward path of the bottom end of detection pin;

[0007] The detection pin sleeve is embedded in the detection base and the upper end is exposed on the upper surface of the detection base, the detection base is matched with the outer contour of the HP-RTM composite material upper cover, a pneumatic cylinder pressing clamp is arranged beside the detection base.

[0008] Preferably, the detection base is annularly arranged, a limiting block is arranged on the inner side of the annular structure, and a cylinder clamp is arranged on the outer side of the annular structure; the upper surface of the detection base is provided with a step with an outer high and an inner low; and the detection pin sleeve is connected to the inner high step of the detection base.

[0009] Preferably, the top end of the detection pin sleeve is provided with an outward flange ring, the flange ring is located on the upper surface of the detection base, the lower part of the detection pin sleeve is inserted into the upper and lower through mounting holes arranged in the detection base, and the bottom end of the detection pin sleeve is located above the proximity switch sensor.

[0010] Preferably, the proximity switch sensor is transversely inserted into the detection base and corresponds to the position of the detection pin sleeve; and the tail end of the proximity switch sensor is arranged towards the inner side of the annular structure of the detection base.

[0011] Preferably, the bottom surfaces of the detection base, the limiting block and the cylinder clamp are flat and are arranged on the upper surface of a movable detection platform.

[0012] Preferably, the detection holes correspond to the to-be-detected hole positions on the HP-RTM composite upper cover, and the detection base is provided with corresponding hole position number marks beside each detection hole.

[0013] Preferably, the detection platform is provided with a threading hole through which the tail end of the proximity switch sensor is arranged to pass.

[0014] Preferably, the detection pin comprises a relatively thick middle holding part and at least one end thin insertion head part.

[0015] The main beneficial effects of the above technical solutions are as follows:

[0016] 1. The HP-RTM composite upper cover detection tool anti-miss detection structure can realize real-time detection of the insertion state of the corresponding detection pin, ensure that each detection hole position is detected, and avoid miss detection through the arrangement of the proximity switch sensor.

[0017] 2. In the HP-RTM composite upper cover detection tool anti-miss detection structure, all hole detection signals are associated, when there is a hole that is not detected, the detection is not completed, the cylinder clamp cannot be opened, and the foolproof function is realized.

[0018] 3. In the HP-RTM composite upper cover detection tool anti-miss detection structure, the detection base is provided with corresponding hole position number marks beside each detection hole, so that the missed detection hole can be quickly found. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0020] Figure 2 for Figure 1 the cross-sectional structure schematic view of A-A direction in figure;

[0021] Figure 3 for Figure 2 the enlarged schematic view of B in figure;

[0022] Figure 4 for Figure 3 the enlarged schematic view of C in figure;

[0023] Figure 5 the structure schematic view of the detection pin in the utility model;

[0024] Figure 6 the use state schematic view of the utility model;

[0025] In the figure: 1, detection pin; 1a, intermediate holding portion; 1b, plug-in head; 2, detection pin sleeve; 2a, flange ring; 3, proximity switch sensor; 3a, probe head end; 3b, wiring tail end; 4, detection base; 4a, step; 5, limit block; 6, cylinder pressure clamp; 7, gauge platform. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model; in the description of the utility model, it should be understood that the orientation or position relationship indicated by terms "upper", "lower", "inner", "outer", "horizontal", "vertical" and the like used is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the technical solutions of the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed in a particular orientation and be operated, so the utility model cannot be limited in this way.

[0027] Please refer to Figures 1-6 the figure, embodiment one, a HP-RTM composite material upper cover gauge leak detection structure, including movable detection pin 1 and fixed detection pin sleeve 2, the detection pin sleeve 2 is provided with vertical detection hole, the detection pin 1 includes relatively thick intermediate holding portion 1a and at least one end thinner plug-in head 1b, the operation plug-in head 1b is inserted into the detection hole from top to bottom downwards, the detection hole is provided with proximity switch sensor 3 below, the proximity switch sensor 3 is placed horizontally and its probe head end 3a is towards the directly below of detection hole, the proximity switch sensor 3 is inserted horizontally in the detection base 4 and corresponds to the position of detection pin sleeve 2 one by one, the proximity switch sensor 3 is not blocked to the downward path of the bottom end of detection pin 1;

[0028] Specifically, the detection pin sleeve 2 is embedded in the detection base 4 and the upper end is exposed above the upper surface of the detection base 4, the detection base 4 matches the outer contour of the HP-RTM composite upper cover, the detection holes correspond to the hole positions on the HP-RTM composite upper cover one by one, the detection base 4 is provided with corresponding hole position number marks beside each detection hole, and the air cylinder pressure clamp 6 is arranged beside the detection base 4; part of the detection pin 1 has a positioning pin function, the detection base 4 is arranged in a ring shape, the ring structure is provided with a limiting block 5 on the inner side, and the air cylinder pressure clamp 6 is arranged on the outer side of the ring structure, the upper surface of the detection base 4 is provided with a step 4a with high outer and low inner, the detection pin sleeve 2 is connected to the inner peripheral platform with low height on the detection base 4, the bottom surfaces of the detection base 4, the limiting block 5 and the air cylinder pressure clamp 6 are flat, and are arranged on the upper surface of the movable detection tool platform 7; the upper cover product is positioned on the inner peripheral platform with low height on the detection base 4 of the detection tool by the positioning pin, and is pressed and fixed downward by the air cylinder pressure clamp 6.

[0029] Further specifically, the top end of the detection pin sleeve 2 is provided with an outward flange ring 2a, the flange ring 2a is located on the upper surface of the detection base 4, and when the upper cover product is placed in place, it is in contact with the lower flange ring 2a, the lower part of the detection pin sleeve 2 is inserted into the upper and lower through installation hole arranged in the detection base 4, and the bottom end of the detection pin sleeve 2 is located above the proximity switch sensor 3.

[0030] The tail end 3b of the proximity switch sensor 3 faces the inner side of the ring structure of the detection base 4, which is convenient for wiring connection and arrangement; at the same time, the detection tool platform 7 is provided with a threading hole for the tail end wiring of the proximity switch sensor 3 to pass through, the tail end wiring of the proximity switch sensor 3 is led out through the threading hole on the detection tool platform 7 and connected to the control system, further optimizing the layout of the wiring.

[0031] In the embodiment, when the detection pin 1 passes through the product hole and is inserted from the detection pin sleeve 2 and moves downward in front of the proximity switch sensor 3, the proximity switch sensor 3 senses the existence of the detection pin 1, thereby sending a signal, indicating that the hole has been detected.

[0032] In the above embodiment one, on the basis of the above embodiment one, the display screen is arranged on the gauge to show the product detection view, and the hole positions on the view are marked with hole serial numbers, which are in one-to-one correspondence with the number marks on the detection base 4. The proximity switch sensor 3 and the cylinder pressure clamp 6 switch are connected to the control system, and the inspector needs to detect all the holes on the product one by one. The gauge receives the detection signals of all the hole positions, and then indicates that the hole positions of the product have been detected. The green light is displayed on the display screen for the detected hole positions, and the red light is displayed for the undetected hole positions. When the inspector has detected all the hole positions, the green light is displayed on the display screen for all the hole positions, the cylinder pressure clamp 6 switch is opened, and the cylinder pressure clamp 6 is opened. When there is an undetected hole, the control system cannot open the cylinder pressure clamp 6, and the undetected hole position and number can be seen on the display screen and rechecked. After rechecking, the cylinder pressure clamp 6 can be opened again to take out the product.

[0033] In the embodiment, the display screen connected to the gauge displays the hole position distribution and detection condition in an intuitive graphical interface, and can also send an audible and light alarm signal to remind the inspector to handle in time.

[0034] The composite material prepared by the HP-RTM (high pressure resin transfer molding) process has the advantages of high strength and low density, and is widely used in the fields of aerospace and automobile manufacturing, for example, manufacturing the upper cover of a new energy automobile power battery. The working process of the HP-RTM composite material upper cover gauge anti-miss detection structure provided by the utility model is as follows:

[0035] 1. Open the gauge cylinder pressure clamp 6, place the product on the detection base 4, and position through the main and auxiliary hole positioning pins.

[0036] 2. The cylinder pressure clamp 6 is actuated downward to press the product.

[0037] 3. The inspector inserts the plug-in head 1b of the middle holding part 1a of the detection pin 1 into the detection pin sleeve 2 to perform the detection operation.

[0038] 4. The proximity switch sensor 3 at the corresponding position senses the existence of the detection pin 1, and then sends a signal to indicate that the hole has been detected.

[0039] 5. After all the holes are detected, the green light is displayed on the display screen for all the holes.

[0040] 6. Open the cylinder pressure clamp 6 to take out the product.

[0041] If there is an undetected hole, the cylinder cannot be opened when the cylinder pressure clamp 6 switch is opened, the warning light is bright red and alarms, and the undetected hole position can be checked by observing the display screen.

[0042] In addition, the wear of the detection pin 1, the detection pin sleeve 2 and other components should be checked regularly, and if the wear seriously affects the detection accuracy, it should be replaced in time; the working state of the proximity switch sensor 3 is checked to ensure that its sensitivity is normal, and if there is a fault, it should be repaired or replaced in time. The whole gauge structure is reasonably designed, each component is easy to install and replace, and the maintenance cost is low.

[0043] It should be noted that in the scheme of the present application, "connection" which is not specifically limited can be fixed connection, detachable connection or integral connection; for ordinary skilled persons in the art, appropriate adjustments and changes can be made according to specific application situations.

[0044] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications and replacements can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A leak detection structure for an HP-RTM composite upper cover gauge, characterized in that: The detection pin (1) and the fixed detection pin sleeve (2) are included, the detection pin sleeve (2) is provided with a vertical detection hole, the lower part of the detection pin (1) can be inserted into the detection hole, the detection hole is provided with a proximity switch sensor (3) below, the proximity switch sensor (3) is placed horizontally and its detection head end (3a) faces directly below the detection hole, the proximity switch sensor (3) has no obstruction to the downward movement path of the bottom end of the detection pin (1); The detection pin sleeve (2) is embedded in the detection base (4) and the upper end is exposed on the upper surface of the detection base (4), and the detection base (4) is provided with a pneumatic cylinder pressure clamp (6) beside it.

2. The leak-proof detection structure of the HP-RTM composite upper cover detection tool according to claim 1, characterized in that: The detection base (4) is arranged in a ring shape, the inner side of the ring structure is provided with a limiting block (5), and the pneumatic cylinder pressure clamp (6) is arranged on the outer side of the ring structure, and the upper surface of the detection base (4) is provided with a stepped surface (4a) with high outside and low inside, and the detection pin sleeve (2) is connected to the inner peripheral surface of the detection base (4) with low height.

3. The leak-proof detection structure of the HP-RTM composite upper cover detection tool according to claim 2, characterized in that: The top of the detection pin sleeve (2) is provided with an outward flange ring (2a), which is located on the upper surface of the detection base (4), and the lower part of the detection pin sleeve (2) is inserted into the upper and lower through mounting hole provided in the detection base (4), and the bottom end of the detection pin sleeve (2) is located above the proximity switch sensor (3).

4. The leak-proof detection structure of the HP-RTM composite upper cover detection tool according to claim 3, characterized in that: The proximity switch sensor (3) is horizontally inserted into the detection base (4) and corresponds to the position of the detection pin sleeve (2), and the tail end (3b) of the proximity switch sensor (3) faces the inner side of the detection base (4).

5. The leak-proof detection structure of the HP-RTM composite upper cover detection tool according to claim 4, characterized in that: The bottom surfaces of the detection base (4), the limiting block (5) and the pneumatic cylinder pressure clamp (6) are flat and are arranged on the upper surface of the movable detection platform (7).

6. The leak detection structure of claim 1, wherein: The detection hole corresponds to the detection hole position on the HP-RTM composite upper cover, and the detection base (4) is provided with a corresponding hole position number identification beside each detection hole.

7. The leak detection structure of claim 5, wherein: The detection platform (7) is provided with a threading hole for the tail end wiring of the proximity switch sensor (3).

8. The leak detection structure of claim 1, wherein: The detection pin (1) includes a thicker middle holding part (1a) and at least one thinner insertion head (1b).

9. The leak detection structure of claim 1, wherein: The detection base (4) matches the outer contour of the HP-RTM composite upper cover.

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