Detection device for hydraulic pipe assembly and production line

Abstract

The utility model relates to the technical field of hydraulic pipe assembly detection, and discloses a detection device for a hydraulic pipe assembly and a production line. The hydraulic pipe assembly comprises a pipe sleeve and a connector inserted into the pipe sleeve. The detection device comprises a clamping mechanism used for clamping the pipe sleeve; comprising a moving unit and a detecting unit, the detecting unit is arranged on the moving unit, the detecting end of the detecting unit faces the clamping mechanism, and the moving unit is used for driving the detecting unit to move so that the detecting unit can detect the inserting connection condition of the pipe sleeve on the connector at different positions. Compared with an existing detection mode that an operator detects the insertion condition of the connector and the pipe sleeve by means of hand feeling experience, the detection device is higher in accuracy, can effectively avoid error detection and missing detection, is higher in detection efficiency, and is easy to adapt to a high-speed automatic production line body. Therefore, the detection device can improve the detection accuracy and detection efficiency of the hydraulic pipe assembly.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of hydraulic pipe assembly detection, and particularly relates to a detection device for a hydraulic pipe assembly and a production line. BACKGROUND

[0002] The hydraulic pipe assembly is an important component for transmitting hydraulic power in engineering machinery. The hydraulic pipe assembly usually comprises a pipe sleeve and a joint, and the joint is inserted into the pipe sleeve. When the hydraulic pipe assembly is assembled, the pipe sleeve needs to be clamped on the joint, and the joint should be inserted into the bottom of the pipe sleeve as much as possible before clamping assembly, so that a qualified hydraulic pipe assembly can be obtained after the clamping process.

[0003] However, the existing process generally detects the insertion of the joint into the pipe sleeve by the experience of the operator, and the manual detection method not only limits the production efficiency, but also cannot avoid false detection and missed detection. The hydraulic pipe assembly with the joint and the pipe sleeve not being inserted in place is assembled into engineering machinery or precision equipment, which may cause oil leakage or even serious safety accidents. CONTENT OF THE UTILITY MODEL

[0004] The application aims to provide a detection device for a hydraulic pipe assembly and a production line to improve the accuracy of hydraulic pipe assembly detection.

[0005] To achieve the above-mentioned purpose, the application provides a detection device for a hydraulic pipe assembly, which comprises:

[0006] A clamping mechanism for clamping the pipe sleeve;

[0007] A detection mechanism comprising a moving unit and a detection unit, the detection unit being arranged on the moving unit and the detection end of the detection unit being arranged towards the clamping mechanism, and the moving unit being used to drive the detection unit to move so that the detection unit detects the insertion of the pipe sleeve on the joint at different positions.

[0008] In some embodiments, the moving unit comprises an axial moving assembly, the detection unit is arranged on the axial moving assembly, and the axial moving assembly is used to drive the detection unit to move in a first direction.

[0009] The first direction is the same as the axial direction of the pipe sleeve when the clamping mechanism clamps the pipe sleeve.

[0010] In some embodiments, the axial moving assembly comprises:

[0011] A screw rod and nut assembly driven by a servo motor;

[0012] A lifting seat installed on the screw rod and nut assembly, and the detection unit is connected with the lifting seat.

[0013] In some embodiments, the clamping mechanism clamps the sleeve vertically, and the first direction is a vertical direction.

[0014] In some embodiments, the detection unit comprises a detection element body and a rotating driving seat, a rotating axis of the rotating driving seat is coaxially arranged with the sleeve, and the detection element body is mounted on the rotating driving seat.

[0015] In some embodiments, the number of detection element bodies is multiple, and the multiple detection element bodies are arranged at intervals around the periphery of the sleeve.

[0016] In some embodiments, the detection element body is one of a TOF sensor, a photoelectric sensor, and a visual camera.

[0017] In some embodiments, the clamping mechanism comprises:

[0018] a first positioning clamp block and a second positioning clamp block;

[0019] a driving member, configured to drive the first positioning clamp block and the second positioning clamp block to move towards or away from each other along a radial direction of the sleeve.

[0020] In some embodiments, the first positioning clamp block and the second positioning clamp block are formed with clamping positioning grooves adapted to the sleeve, and the clamping positioning grooves are used to clamp the peripheral wall of the sleeve.

[0021] Another aspect of the present application protects a production line, comprising:

[0022] an assembly station, configured to insert the sleeve into the connector to form the hydraulic pipe assembly;

[0023] an inspection station, provided with the detection device described above; and

[0024] a conveying mechanism, configured to convey the hydraulic pipe assembly on the assembly station to the inspection station.

[0025] Through the above technical solutions, the detection device for the hydraulic pipe assembly provided by the embodiments of the present application has the following beneficial effects:

[0026] In the technical solutions of the present application, after the sleeve and the connector are assembled into the hydraulic pipe assembly at the upstream, the sleeve is clamped by the clamping mechanism, and the detection unit is driven to move relative to the sleeve by the moving unit of the detection mechanism, so that the detection unit detects the insertion of the sleeve into the connector at different positions. Compared with the detection method of relying on the experience of the operator to detect the insertion of the connector and the sleeve, the detection device not only has higher accuracy and can effectively avoid false detection and missed detection, but also has higher detection efficiency and is easy to adapt to high-speed automatic production lines. Therefore, the detection device of the present application can improve the accuracy and efficiency of the detection of the hydraulic pipe assembly.

[0027] Other features and advantages of the present application will be explained in the following detailed description of the embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0028] The accompanying drawings are included to provide a further understanding of the present application and are incorporated in and constitute a part of this specification, illustrate embodiments of the present application and together with the description serve to explain the principles of the present application. In the drawings:

[0029] Figure 1 Structure diagram of the detection device according to the specific embodiment of the present application;

[0030] Figure 2 Structure diagram of the detection mechanism of the detection device in Figure 1 after rotating and lifting action;

[0031] Figure 3 Structure diagram of the clamping mechanism of the detection device in Figure 1 clamping the hydraulic pipe assembly of the 90° joint;

[0032] Figure 4 Structure diagram of the clamping mechanism of the detection device in Figure 1 clamping the hydraulic pipe assembly of the 45° joint;

[0033] Figure 5 Structure diagram of the clamping mechanism of the detection device in Figure 1 clamping the hydraulic pipe assembly of the direct joint.

[0034] BRIEF DESCRIPTION OF DRAWINGS

[0035] 100 Hydraulic pipe assembly 110 Joint

[0036] 120 Pipe sleeve 211 First positioning clamp block

[0037] 210 Clamping mechanism 213 Driving member

[0038] 212 Second positioning clamp block 221 Moving unit

[0039] 220 Detection mechanism 221b Screwed rod and nut assembly

[0040] 221a Axial movement assembly 222 Detection unit

[0041] 221c Lifting seat 222b Rotating driving seat

[0042] 222a detection element body DETAILED DESCRIPTION

[0043] The specific embodiments of the present application are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the present application, and are not intended to limit the present application.

[0044] A detection device for a hydraulic pipe assembly and a production line according to the present application are described below with reference to the accompanying drawings.

[0045] The present application discloses a new type of detection device for a hydraulic pipe assembly, as shown in a specific embodiment, the detection device comprises: Figures 1 to 5

[0046] a clamping mechanism 210 for clamping the pipe sleeve 120;

[0047] a detection mechanism 220 comprising a moving unit 221 and a detection unit 222, the detection unit 222 is arranged on the moving unit 221 and the detection end of the detection unit 222 is arranged towards the clamping mechanism 210, the moving unit 221 is used to drive the detection unit 222 to move, so that the detection unit 222 can detect the insertion condition of the pipe sleeve 120 on the joint 110 at different positions.

[0048] After the joint 110 is inserted into the pipe sleeve 120, the pipe sleeve 120 will have a certain deformation. Referring to Figure 1 , Figure 2 and Figure 3 , after the clamping mechanism 210 clamps the pipe sleeve 120 with the joint 110 inserted, the moving unit 221 of the detection mechanism 220 will drive the detection unit 222, and at the same time the detection unit 222 will detect the deformation amount corresponding to different positions on the pipe sleeve 120, and judge the insertion condition of the pipe sleeve 120 and the joint 110 through the deformation amount. Obtaining deformation amounts at multiple places can improve the reliability of the detection result, avoid being misled by possible single detection errors, and improve the accuracy of the detection. Compared with the existing detection method by manual experience of the operator, the detection device not only has higher accuracy, can effectively avoid false detection and missed detection in manual operation, but also has high automation degree, requires less detection time, and can adapt to high-speed automatic production line. Among them, the detection unit 222 can detect the insertion condition of the joint 110 in the pipe sleeve 120 through various ways, as an example, the detection end of the detection unit 222 can be a contact type high precision probe, which directly detects the size change of the pipe sleeve 120 after being inserted into the joint 110, or a non-contact type photoelectric sensor, which obtains the distance between the detection end and the pipe sleeve 120 through the flight time of the light, so as to judge the size change of the pipe sleeve 120.

[0049] In the present embodiment, as Figure 1 and​Figure 2 As shown, the moving unit 221 includes an axial moving component 221a, and the detection unit 222 is disposed on the axial moving component 221a. The axial moving component 221a is used to drive the detection unit 222 to move along a first direction.

[0050] The first direction is the same as the axial direction of the sleeve 120 when the clamping mechanism 210 clamps the sleeve 120.

[0051] Specifically, see Figure 1 The axial moving component 221a drives the detection unit 222 along the axial direction of the sleeve 120 (i.e. the insertion direction of the connector 110). At the same time, the detection unit 222 acquires the size data of the sleeve 120 multiple times to obtain a series of dot matrix dimensions, thereby determining whether there are gaps, skewing or other defects between the sleeve 120 and the connector 110.

[0052] The axial movement assembly 221a can drive the detection unit 222 to perform multiple checks along the axial direction of the sleeve 120 in various ways. For example... Figure 1 As shown, the axial movement assembly 221a may include:

[0053] Servo motor driven lead screw and nut assembly 221b;

[0054] Lifting seat 221c is mounted on the lead screw slider of lead screw nut assembly 221b, and detection unit 222 is connected to lifting seat 221c.

[0055] The lead screw of the lead screw and nut assembly 221b is arranged along the axial direction of the sleeve 120. As the servo motor drives the lead screw to rotate forward or backward, the lead screw slider (i.e. the nut) sleeved on the lead screw can reciprocate along the axial direction of the sleeve 120, thereby driving the lifting seat 221c, which in turn enables the detection unit 222 to reciprocate along the axial direction of the sleeve 120 and accurately position itself.

[0056] Of course, those skilled in the art will understand that the method by which the drive detection unit 222 reciprocates along the axial direction of the sleeve 120 is not limited to the aforementioned screw and nut assembly 221b, but can also be a gear and rack assembly, a cylinder, a hydraulic cylinder, or the like.

[0057] like Figure 1 As shown, for ease of equipment arrangement, the clamping mechanism 210 can clamp the sleeve 120 vertically, meaning the position where the sleeve 120 is clamped by the clamping mechanism 210 extends vertically. Of course, the clamping mechanism 210 can also clamp the sleeve 120 at other angles, such as horizontal clamping, or even clamping at an inclined angle.

[0058] The improper assembly of the pipe sleeve 120 has various forms, for example, the excessive buckling assembly action upstream can cause the radial section of the pipe sleeve 120 to become oval. The detection unit 222 only moves in the axial direction of the pipe sleeve 120, and it is difficult to detect the irregular deformation of the pipe sleeve 120 in the circumferential direction. In the embodiment, as shown in Figure 1 The detection unit 222 can include a detection element body 222a and a rotating drive seat 222b, and the rotating axis of the rotating drive seat 222b is coaxially arranged with the pipe sleeve 120.

[0059] In this way, the detection unit 222 can rotate relative to the pipe sleeve 120 with the axis of the pipe sleeve 120 as the rotating axis, thereby obtaining multiple size data of the pipe sleeve 120 in the circumferential direction, and further confirming the degree of irregular deformation of the pipe sleeve 120 in the circumferential direction. Further reduce the possibility of false detection, and improve the reliability of the detection of the hydraulic pipe assembly 100.

[0060] Of course, those skilled in the art can understand that the way to obtain multiple size data of the pipe sleeve 120 in the circumferential direction is not limited to the rotating drive seat 222b driving the detection element body 222a to pivot relative to the pipe sleeve 120, but other rotating mechanisms can also be used to drive the pipe sleeve 120 to pivot relative to its own axis, so that the detection element body 222a can obtain the circumferential size of the pipe sleeve 120.

[0061] In the embodiment, as shown in Figure 1 and Figure 2 The number of detection element bodies 222a is multiple, and the multiple detection element bodies 222a are arranged at intervals around the circumferential side of the pipe sleeve 120.

[0062] Referring to Figure 1 , the number of detection element bodies 222a is two, and they are arranged on the horizontal two sides of the pipe sleeve 120. In this way, the circumferential and axial size data of the pipe sleeve 120 can be obtained simultaneously by the two detection element bodies 222a, greatly improving the detection efficiency, so as to be easily adapted to high-speed automatic production lines. Of course, the number of detection element bodies 222a is not limited to two as shown in the figure, but can also be other numbers.

[0063] In the embodiment, the detection element body 222a can be one of a TOF sensor, a photoelectric sensor, and a visual camera. Specifically, in view of the small deformation of the sleeve 120, the detection element body 222a in the embodiment adopts a photoelectric sensor to ensure detection accuracy. The photoelectric sensor includes a transmitting end for transmitting laser and a receiving end for receiving reflected laser. However, it should be understood by those skilled in the art that the detection element body 222a can also be other forms such as a millimeter wave TOF sensor, or even a visual camera, which should all fall within the protection scope of the present application.

[0064] In the embodiment, as shown in Figures 1 to 5 , the clamping mechanism 210 can include:

[0065] a first positioning clamp block 211 and a second positioning clamp block 212;

[0066] a driving member 213 for driving the first positioning clamp block 211 and the second positioning clamp block 212 to move towards or away from each other along the radial direction of the sleeve 120.

[0067] Specifically, referring to Figure 5 , the first positioning clamp block 211 and the second positioning clamp block 212 move towards each other along the radial direction of the sleeve 120 to jointly clamp the sleeve 120, so that the position of the sleeve 120 is fixed when the detection unit 222 moves relative to the sleeve 120, so that the series of dot matrix sizes obtained by the detection unit 222 accurately correspond to the size of the sleeve 120. After the first positioning clamp block 211 and the second positioning clamp block 212 move away from each other along the radial direction of the sleeve 120, the sleeve 120 can be released to prepare for the next material receiving. The driving member 213 can be any one of a pneumatic cylinder, an oil cylinder, and an electric cylinder. In view of the small clamping force required by the sleeve 120, the driving member 213 in the embodiment is preferably a pneumatic cylinder.

[0068] In the embodiment, the first positioning clamp block 211 and the second positioning clamp block 212 are formed with clamping positioning grooves adapted to the sleeve 120, which are used to clamp the peripheral wall of the sleeve 120.

[0069] In order to ensure that the series of lattice points obtained in the detection of the relative movement of the detection element body 222a and each corresponding pipe sleeve 120 can be compared with the predetermined standard data, it is necessary to ensure that the overall position of the pipe sleeve 120 is basically fixed when the clamping mechanism 210 clamps the pipe sleeve 120. Therefore, a clamping positioning groove adapted to the pipe sleeve 120 can be arranged on the first positioning clamp block 211 and the second positioning clamp block 212 for clamping the end face of the pipe sleeve 120, so that the posture of the pipe sleeve 120 is determined after the pipe sleeve 120 is clamped by the clamping mechanism 210. Of course, the positioning structure for determining the posture of the pipe sleeve 120 after the pipe sleeve 120 is clamped by the clamping mechanism 210 is not limited to the clamping positioning groove. Other designs of the positioning structure can refer to the common positioning structures in the clamp, which will not be described here.

[0070] The present application discloses a new production line, such as Figure 1 As shown in a specific embodiment, the production line comprises:

[0071] An assembly station for inserting the pipe sleeve 120 into the connector 110 to form the hydraulic pipe assembly 100;

[0072] An inspection station provided with the detection device described above; and

[0073] A conveying mechanism for conveying the hydraulic pipe assembly 100 on the assembly station to the inspection station.

[0074] The assembly of the split connector 110 and the pipe sleeve 120 in the assembly station of the production line is completed by manual or mechanical buckling and assembly, and then conveyed to the inspection station by the conveying mechanism such as a conveyor belt or a track, and the size of the pipe sleeve 120 is detected by the detection device of the inspection station, so as to determine whether the connector 110 is correctly inserted into the pipe sleeve 120. Compared with the detection method by the experience of the operator in the existing production line, the detection device has low dependence on manual operation, high accuracy, and fast detection speed, so that the production line can be produced automatically at high speed and the production efficiency is improved. Obviously, the production line also has all the technical effects of the detection device described above, which will not be described here.

[0075] In summary, the photoelectric sensor of the detection device of the present application measures the time of flight of the laser light to obtain the deformation amount of the pipe sleeve 120 at multiple positions after the pipe sleeve 120 is assembled with the joint 110. The detection device drives the lifting seat 221c to displace the photoelectric sensor upward by 10 mm at a speed of 1 mm / s through the screw-nut assembly 221b, and at least 20 measurements are performed at a frequency of 2 Hz or higher, so as to obtain the deformation amount of the pipe sleeve 120 in the axial direction. In addition, the rotating drive seat 222b is also installed on the lifting seat 221c, and the photoelectric sensor is driven to pivot relative to the pipe sleeve 120 through the rotating drive seat 222b, so as to obtain the deformation amount of the pipe sleeve 120 in the circumferential direction. According to whether the series of point array sizes obtained by the detection device exceed the deviation allowable value range from the predetermined standard data, the clamping mechanism 210 of the detection device can perform downstream feeding or throwing of the material.

[0076] In the description of the present application, it should be understood that the terms "first", "second" are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0077] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or communicate with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0078] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present description, the illustrative description of the above terms does 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 the different embodiments or examples described in the present description and the features of the different embodiments or examples without contradiction.

Claims

1. A testing device for a hydraulic tube assembly, the hydraulic tube assembly (100) comprising a tube sleeve (120) and a fitting (110) plugged into the tube sleeve (120), characterized in that, The detection device comprises: a clamping mechanism (210) for clamping the sleeve (120); a detection mechanism (220) comprising a moving unit (221) and a detection unit (222), the detection unit (222) being arranged on the moving unit (221) and a detection end of the detection unit (222) being arranged towards the clamping mechanism (210), the moving unit (221) being used to drive the detection unit (222) to move so that the detection unit (222) detects the insertion of the sleeve (120) on the joint (110) at different positions.

2. The detection device for a hydraulic pipe assembly according to claim 1, characterized by, The moving unit (221) comprises an axial moving assembly (221a), the detection unit (222) being arranged on the axial moving assembly (221a), the axial moving assembly (221a) being used to drive the detection unit (222) to move in a first direction. The first direction is the same as the axial direction of the sleeve (120) when the clamping mechanism (210) clamps the sleeve (120).

3. The detection device for a hydraulic tube assembly according to claim 2, characterized by, The axial moving assembly (221a) comprises: a servo motor driven screw nut assembly (221b); a lifting seat (221c) mounted on a screw block of the screw nut assembly (221b), the detection unit (222) being connected with the lifting seat (221c).

4. The detection device for a hydraulic pipe assembly according to claim 3, characterized by, The clamping mechanism (210) vertically clamps the sleeve (120), and the first direction is a vertical direction.

5. The detection device for a hydraulic pipe assembly according to claim 2, characterized by, The detection unit (222) comprises a detection element body (222a) and a rotary driving seat (222b), a rotary axis of the rotary driving seat (222b) being coaxially arranged with the sleeve (120), and the detection element body (222a) being mounted on the rotary driving seat (222b).

6. The detection device for a hydraulic tube assembly according to claim 5, wherein The number of the detection element bodies (222a) is plural, and the plural detection element bodies (222a) are arranged at intervals around the circumferential side of the sleeve (120).

7. The detection device for a hydraulic tube assembly according to claim 5, wherein The detection element body (222a) is one of a TOF sensor, a photoelectric sensor and a visual camera.

8. The detection apparatus for a hydraulic pipe assembly according to any one of claims 1 to 7, characterized by The clamping mechanism (210) comprises: a first positioning clamp block (211) and a second positioning clamp block (212); a driving member (213) used to drive the first positioning clamp block (211) and the second positioning clamp block (212) to move towards or away from each other in a radial direction of the sleeve (120).

9. The detection device for a hydraulic tube assembly according to claim 8, wherein, The first positioning clamp block (211) and the second positioning clamp block (212) are formed with clamping positioning grooves matched with the sleeve (120), the clamping positioning grooves being used to clamp the circumferential wall of the sleeve (120).

10. A production line, characterized in that, The production line comprises: an assembly station for inserting the sleeve (120) on the joint (110) to form a hydraulic pipe assembly (100); an inspection station provided with the detection device according to any one of claims 1-9; and a conveying mechanism used to convey the hydraulic pipe assembly (100) on the assembly station to the inspection station.

Images