A pipe straightness detection device

Abstract

The present application discloses a pipe straightness detection device, including a feeding mechanism, a detection mechanism and a feeding mechanism; the feeding mechanism includes a bottom plate, an adjustment pressure plate and a top plate, one side of the bottom plate is connected to the top plate, and the upper plate surface of the bottom plate is an inclined surface inclined toward the top plate; the detection mechanism includes a receiving plate, a first baffle plate arranged above the receiving plate, a movable lower plate connected to the receiving plate, and an upper plate arranged parallel to and relatively spaced from the movable lower plate; the gap between the movable lower plate and the upper plate is the outer diameter size of a qualified pipe; when the pipe to be detected rolls onto the top plate, it is ejected by the top plate and received by the receiving plate, and rolls along the receiving plate to the movable lower plate; if the pipe to be detected can pass through the gap between the movable lower plate and the upper plate, the pipe is unloaded by the feeding mechanism to the qualified product storage station. The pipe straightness detection device provided by the present application can reduce labor intensity, reduce manual participation, improve detection efficiency, and save labor costs and time costs.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical equipment, and in particular to a straightness detection device for pipes or bars. Background Art

[0002] In industrial production, especially welded round tubes and bars and round tubes and bars after heat treatment, axial bending deformation is prone to occur, and this deformation is very random, which will directly lead to the product straightness failing to meet the technical requirements and resulting in unstable product quality.

[0003] Take the heat exchange tube as an example, it is a hollow round tube placed inside the cylinder, used for heat exchange between two media. Existing heat exchange tubes need to be cut during the processing, and the cut heat exchange tubes also need to be tested for straightness to sort out good and bad products, ensuring that the products used for installation after shipment are qualified products with straightness standards.

[0004] The existing device for detecting the straightness of heat exchange tubes is two pressure plates spaced apart from each other. The gap between the upper and lower pressure plates is adjusted according to the dimensional tolerance of the heat exchange tube diameter. If the tube can pass through the gap, it is qualified. The existing detection device has a simple structure and a single function. It is inconvenient to discharge the detected unqualified products. It is not suitable for testing mass-produced pipe fittings. It has the problems of high labor intensity and low detection efficiency.

[0005] Therefore, it is urgent to propose a new technical solution to solve the problems existing in the prior art. Summary of the invention

[0006] The present application provides a pipe straightness detection device, which is used to solve the problems of high labor intensity and low detection efficiency in the existing pipe straightness detection.

[0007] In order to achieve the above objectives, this application provides the following technical solutions:

[0008] The present application provides a pipe straightness detection device, comprising a feeding mechanism, a detection mechanism and a feeding mechanism, wherein:

[0009] The feeding mechanism comprises a bottom plate, a feeding plate and a feeding drive assembly for driving the feeding plate, one side of the bottom plate is connected to the feeding plate, the upper plate surface of the bottom plate is an inclined surface inclined toward the feeding plate, and the upper plate surface forms a feeding station for the pipe to be inspected. When the pipe to be inspected rolls onto the feeding plate, the feeding plate is driven to rise, so that the pipe to be inspected rolls onto the inspection mechanism;

[0010] The detection mechanism comprises a material receiving plate, a first material baffle plate arranged above the material receiving plate, a movable lower plate connected to the material receiving plate, an upper plate arranged parallel to and relatively spaced from the movable lower plate, and an adjustment component for adjusting the gap between the upper plate and the movable lower plate; the gap between the movable lower plate and the upper plate is the outer diameter size of the qualified pipe fittings; the pipe fittings to be detected ejected by the ejection plate are received by the material receiving plate and blocked by the first material baffle plate, and when the first material baffle plate is driven to rise, the pipe fittings to be detected roll along the material receiving plate to the movable lower plate;

[0011] If the pipe to be inspected can pass through the gap between the movable lower plate and the upper plate, the pipe will be unloaded by the unloading mechanism to the qualified product storage station; if the pipe to be inspected does not pass through the gap between the movable lower plate and the upper plate, the movable lower plate is driven downward, and the pipe rolls from the movable lower plate to the defective product storage station.

[0012] Furthermore, in the above technical solution, the feeding mechanism also includes an adjusting pressure plate which is parallel to and relatively spaced from the base plate, the gap between the base plate and the adjusting pressure plate is adapted to the outer diameter of the pipe to be inspected, and the gap between the base plate and the adjusting pressure plate forms a accommodating space for several pipes.

[0013] Furthermore, a first sensor is provided on the adjustment platen, and the first sensor is connected to the signal of an external automatic loading device. After receiving the loading signal from the first sensor, the external automatic loading device loads the material onto the upper surface of the base plate.

[0014] Furthermore, a height adjusting member is provided on the adjusting platen, and the height adjusting member is used to adjust the position of the adjusting platen, and further adjust the gap between the bottom plate and the adjusting platen.

[0015] Furthermore, the bottom plate and the receiving plate are respectively arranged on opposite sides of the top plate, and a lifting track of the top plate is formed between the bottom plate and the receiving plate; the surface of the receiving plate for receiving the pipe fittings to be inspected is higher than the upper surface of the bottom plate.

[0016] Furthermore, the ejection drive assembly includes a driving cylinder connected to the ejection plate; when the ejection plate is driven to descend to the initial position, the plate surface on the ejection plate used for ejecting is lower than the upper plate surface of the bottom plate, or is basically flush with the upper plate surface of the bottom plate; when the ejection plate is driven to rise to the ejection position, the plate surface on the ejection plate used for ejecting is higher than the plate surface of the receiving plate for receiving the pipe fittings to be inspected, or is basically flush with the plate surface of the receiving plate for receiving the pipe fittings to be inspected.

[0017] Furthermore, the plate surface on the receiving plate for receiving the pipe fittings to be inspected is flush with the plate surface on the movable lower plate for receiving the pipe fittings to be inspected, and the two plate surfaces are inclined planes with the same inclination.

[0018] Furthermore, the plate surface on the receiving plate for receiving the pipe fittings to be inspected is an inclined surface inclined toward the movable lower plate.

[0019] Furthermore, the first material baffle plate is connected to a first driving assembly, and the first driving assembly is used to drive the first material baffle plate to approach or move away from the material receiving plate; when the first material baffle plate is driven to rise, a gap is formed between the first material baffle plate and the material receiving plate to allow the pipe to be inspected to roll down; when the first material baffle plate is driven to descend, the first material baffle plate forms a blockage for the pipe to be inspected on the receiving plate.

[0020] Further, the first driving assembly includes a cylinder connected to the first material baffle plate;

[0021] Furthermore, the ejector plate and the first baffle plate are L-shaped plates respectively.

[0022] Furthermore, bearing mounting seats are formed on opposite sides of the movable lower plate, a linear bearing is installed in the bearing mounting seat, an optical axis is installed in the linear bearing, one end of the optical axis is connected to the upper plate, and an adjustment pad is provided in the gap between the movable lower plate and the upper plate.

[0023] Furthermore, the linear bearing, the optical axis and the adjustment pad constitute an adjustment component for adjusting the gap between the upper plate and the movable lower plate.

[0024] Furthermore, one end of the optical axis passes through the upper plate and is connected to the frame, and a gasket and a nut are sleeved on the shaft body of the optical axis after it extends out of the upper plate.

[0025] Furthermore, the height of the adjustment pad is consistent with the outer diameter of the qualified pipe fitting.

[0026] Furthermore, two adjustment pads are arranged opposite to each other in the gap between the movable lower plate and the upper plate.

[0027] Furthermore, the planes where the two optical axes are located are perpendicular to the rolling path of the pipe to be inspected on the movable lower plate.

[0028] Furthermore, the unloading mechanism includes a unloading plate, a discharging baffle, a discharging drive component for driving the discharging baffle, and a second sensor.

[0029] Furthermore, the blanking plate is connected to the movable lower plate, and the plate surface of the movable lower plate is flush with the plate surface of the blanking plate; the plate surface of the blanking plate and the plate surface of the movable lower plate are inclined surfaces with the same inclination.

[0030] Furthermore, the discharging drive assembly includes a driving cylinder connected to the discharging baffle, the driving cylinder is connected to the second sensor signal, the second sensor is installed at the discharging baffle, and when the second sensor detects the pipe at the discharging baffle, it sends a discharging signal to the discharging drive assembly.

[0031] Furthermore, the discharging drive assembly receives a discharging signal emitted by the second sensor, and drives the discharging baffle away from the movable lower plate according to the discharging signal; when the discharging baffle is driven away from the movable lower plate, a gap is formed between the discharging baffle and the movable lower plate to allow the pipe to be inspected to roll down, and the pipe to be inspected rolls out from the discharge plate to the qualified product storage station; when the discharging baffle is driven close to the movable lower plate, the discharging baffle blocks the pipe to be inspected on the movable lower plate.

[0032] Furthermore, the movable lower plate is connected to the discharging drive cylinder, and the discharging drive cylinder is connected to the second sensor signal. When the pipe to be detected does not pass through the gap between the movable lower plate and the upper plate, the second sensor cannot detect the pipe, and the second sensor sends a signal to the discharging drive cylinder. The discharging drive cylinder drives the movable lower plate to descend, and the pipe rolls from the movable lower plate to the defective product storage station.

[0033] Compared with the prior art, this application has the following beneficial effects:

[0034] The pipe straightness detection device provided by the present application integrates a loading mechanism, a detection mechanism and a unloading mechanism, the loading mechanism comprising a lifting plate, an inclined bottom plate, and an adjustment pressure plate parallel to and relatively spaced from the bottom plate, the pipe to be detected can roll down on the inclined bottom plate by its own gravity without energy consumption; the lifting plate can lift the pipe to be detected that has rolled onto it to the detection mechanism; the detection mechanism comprises a receiving plate, a first baffle plate, a movable lower plate, an upper plate and an adjustment assembly, the pipe to be detected ejected by the lifting plate is received by the receiving plate, when the first baffle plate is driven to rise, the pipe to be detected rolls along the receiving plate to the movable lower plate, if the pipe to be detected can pass through the gap between the movable lower plate and the upper plate, the pipe is unloaded by the unloading mechanism to the qualified product storage station; if the pipe to be detected does not pass through the gap between the movable lower plate and the upper plate, the movable lower plate is driven to move downward, and the pipe rolls from the movable lower plate to the defective product storage station. The pipe straightness detection device provided by the present application replaces the traditional manual sorting method, reduces the labor intensity of the staff, reduces the manual participation, improves the detection efficiency, and saves the labor cost and time cost. Furthermore, the gap between the bottom plate and the adjustment plate is adapted to the outer diameter of the pipe to be detected, so that the gap between the bottom plate and the adjustment plate can be limited, and the pipes whose straightness does not meet the basic requirements can be removed in advance during loading, completing the first screening, and the pipes that can pass through the gap between the bottom plate and the adjustment plate are screened again through the gap between the movable lower plate and the upper plate, reducing the number of unqualified pipes stuck between the movable lower plate and the upper plate, and improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be understood that the specific shapes and structures shown in the drawings should not usually be regarded as limiting conditions for implementing the present application; for example, based on the technical concepts and exemplary drawings disclosed in the present application, those skilled in the art are able to easily make routine adjustments or further optimizations to the increase / decrease / attribution division, specific shapes, positional relationships, connection methods, and dimensional ratios of certain units (components).

[0036] Figure 1 A schematic diagram of the three-dimensional structure of a pipe straightness detection device provided by the present application in one embodiment at a viewing angle;

[0037] Figure 2 It is a schematic structural diagram of a pipe straightness detection device provided by the present application in a cross-sectional state in one embodiment;

[0038] Figure 3This is a structural schematic diagram of a pipe straightness detection device provided by the present application in another sectional state in one embodiment, and the figure mainly shows the installation structure of the adjustment component for adjusting the gap between the upper plate and the movable lower plate.

[0039] Description of reference numerals:

[0040] 1. First sensor; 2. Adjustment plate; 3. Bottom plate; 4. First baffle plate; 5. Upper plate; 6. Discharge baffle plate; 7. Movable lower plate; 8. Unloading plate; 9. Ejector plate; 10. Second sensor; 11. Defective product box; 12. Adjustment pad; 13. Optical axis; 14. Linear bearing; 15. Pipe fittings to be tested. DETAILED DESCRIPTION

[0041] The present application is further described below in detail through specific embodiments in conjunction with the accompanying drawings.

[0042] In the description of this application: unless otherwise specified, the meaning of "plurality" is two or more. The terms "first", "second", "third", etc. in this application are intended to distinguish the objects referred to, and do not have special meanings in terms of technical connotations (for example, they should not be understood as emphasizing the importance or order, etc.). Expressions such as "including", "comprising", "having", etc. also mean "not limited to" (certain units, components, materials, steps, etc.).

[0043] The terms such as "upper", "lower", "left", "right", "middle", etc. used in this application are usually used to facilitate intuitive understanding by comparing with the accompanying drawings, and are not absolute limitations on the positional relationship in the actual product. Without departing from the technical concept disclosed in this application, changes in these relative positional relationships should also be regarded as the scope of this application.

[0044] In order to solve the problems existing in the prior art, the present application provides a pipe straightness detection device to reduce labor intensity and improve production detection efficiency. The pipe straightness detection device can automatically sort qualified products and defective products.

[0045] See also Figure 2 The pipe straightness detection device includes three functional modules: a feeding mechanism, a detection mechanism and a feeding mechanism. In one embodiment, an automatic feeding device can be combined to automatically feed the feeding mechanism of the pipe straightness detection device, thereby replacing manual feeding, reducing labor intensity and improving detection efficiency.

[0046] The following is an explanation of the structural composition and sorting principle of the pipe straightness detection device in conjunction with the accompanying drawings:

[0047] 1. Feeding mechanism

[0048] See also Figure 2The loading mechanism may include a bottom plate 3, a top plate 9, and a top driving assembly for driving the top plate 9. One side of the bottom plate 3 is connected to the top plate 9, and the upper plate 5 of the bottom plate 3 is an inclined surface inclined toward the top plate 9. The upper plate 5 forms a loading station for the pipe 15 to be tested. When the pipe 15 to be tested rolls onto the top plate 9, the top plate 9 is driven to rise, so that the pipe to be tested rolls onto the testing mechanism. Setting the upper plate 5 of the bottom plate 3 as an inclined surface can utilize the weight of the pipe itself to make the pipe roll automatically without manual pushing.

[0049] In one embodiment, the feeding mechanism may further include an adjustment platen 2 which is parallel to and relatively spaced from the bottom plate 3, the gap between the bottom plate 3 and the adjustment platen 2 being adapted to the outer diameter of the pipe to be tested, and the gap between the bottom plate 3 and the adjustment platen 2 forming a plurality of pipe accommodation spaces. Through the gap restriction between the bottom plate 3 and the adjustment platen 2, pipes whose straightness does not meet the basic requirements can be removed in advance during feeding. In one application example, the gap between the bottom plate 3 and the adjustment platen 2 can be adjusted to be slightly larger than the gap between the movable lower plate 7 and the upper plate 5, and the bottom plate 3 and the adjustment platen 2 are used to screen the pipes that do not meet the straightness requirements for the first time. At this time, defective products cannot directly enter between the bottom plate 3 and the adjustment platen 2, and the first screening is completed. The pipes that enter the gap between the bottom plate 3 and the adjustment platen 2 are screened again through the gap between the movable lower plate 7 and the upper plate 5, so that the detection accuracy can be further ensured, the number of unqualified pipes stuck between the movable lower plate 7 and the upper plate 5 can be reduced, and the detection efficiency can be improved.

[0050] In one embodiment, a first sensor 1 may be provided on the adjustment platen 2, and the first sensor 1 is connected to the external automatic feeding device signal, and the external automatic feeding device feeds the material to the upper plate 5 of the bottom plate 3 after receiving the feeding signal from the first sensor 1. In this way, automatic feeding is realized, and the labor cost of detection is reduced.

[0051] In one embodiment, in order to adapt to pipes with different outer diameters, a height adjusting member is provided on the adjusting platen 2, and the height adjusting member realizes the position adjustment of the adjusting platen 2, that is, the gap between the base plate 3 and the adjusting platen 2 is adjusted, thereby improving the adaptability of the device to pipes of various diameters.

[0052] 2. Testing Agency

[0053] See also Figure 2 The detection mechanism includes a material receiving plate, a first material blocking plate 4 arranged above the material receiving plate, a movable lower plate 7 connected to the material receiving plate, an upper plate 5 parallel to and relatively spaced from the movable lower plate 7, and an adjusting component for adjusting the gap between the upper plate 5 and the movable lower plate 7.

[0054] During use, the gap between the movable lower plate 7 and the upper plate 5 is the outer diameter size of the qualified pipe. The pipe to be tested ejected by the ejector plate 9 is received by the receiving plate and blocked by the first baffle plate 4. When the first baffle plate 4 is driven to rise, the pipe to be tested rolls along the receiving plate to the movable lower plate 7. If the pipe to be tested can pass through the gap between the movable lower plate 7 and the upper plate 5, the pipe is unloaded by the unloading mechanism to the qualified product storage station; if the pipe to be tested does not pass through the gap between the movable lower plate 7 and the upper plate 5, the movable lower plate 7 is driven to move downward, and the pipe rolls from the movable lower plate 7 to the defective product storage station.

[0055] In one embodiment, see Figure 2 The bottom plate 3 and the receiving plate are respectively arranged on the opposite sides of the top plate 9, and a lifting track of the top plate 9 is formed between the bottom plate 3 and the receiving plate; the receiving plate is used to receive the surface of the pipe to be inspected, and is higher than the upper plate 5 of the bottom plate 3.

[0056] In one embodiment, see Figure 2 The ejection driving assembly includes a driving cylinder connected to the ejection plate 9; when the ejection plate 9 is driven to descend to the initial position, the plate surface of the ejection plate 9 used for ejection is lower than the upper plate 5 of the bottom plate 3, or is basically flush with the upper plate 5 of the bottom plate 3; when the ejection plate 9 is driven to rise to the ejection position, the plate surface of the ejection plate 9 used for ejection is higher than the plate surface of the receiving plate for receiving the pipe fittings to be inspected, or is basically flush with the plate surface of the receiving plate for receiving the pipe fittings to be inspected.

[0057] In one embodiment, see Figure 2 The plate surface on the material receiving plate for receiving the pipe to be inspected is flush with the plate surface on the movable lower plate 7 for receiving the pipe to be inspected, and the two plate surfaces are inclined surfaces with the same inclination; the plate surface on the material receiving plate for receiving the pipe to be inspected is an inclined surface inclined toward the movable lower plate 7.

[0058] In one embodiment, see Figure 2 The first baffle plate 4 is connected to the first driving assembly, and the first driving assembly is used to drive the first baffle plate 4 to approach or move away from the receiving plate; when the first baffle plate 4 is driven to rise, a gap is formed between the first baffle plate 4 and the receiving plate to allow the pipe to be inspected to roll down; when the first baffle plate 4 is driven to descend, the first baffle plate 4 blocks the pipe to be inspected on the receiving plate.

[0059] In one embodiment, the first drive assembly includes a cylinder connected to the first material blocking plate 4. Of course, other drive components can also be used in other embodiments.

[0060] In one embodiment, see Figure 2 The top plate 9 and the first baffle plate 4 are L-shaped plates respectively.

[0061] In one embodiment, the adjustment assembly for adjusting the gap between the upper plate 5 and the movable lower plate 7 is composed of a linear bearing 14, an optical axis 13 and an adjustment pad 12. For details, see Figure 3 , bearing mounting seats are formed on opposite sides of the movable lower plate 7, linear bearings 14 are installed in the bearing mounting seats, optical axes 13 are installed in the linear bearings 14, and adjustment pads 12 are arranged in the gap between the movable lower plate 7 and the upper plate 5. One end of the optical axis 13 passes through the upper plate 5 and is connected to the frame. A gasket and a nut are sleeved on the shaft of the optical axis 13 after it extends out of the upper plate 5. The height of the adjustment pad 12 is consistent with the outer diameter of the qualified pipe fittings. The plane where the two optical axes 13 are located is perpendicular to the rolling path of the pipe fittings to be tested on the movable lower plate 7. By adjusting the adjustment component, the device can adapt to the detection of the straightness of pipe fittings and bars of different specifications.

[0062] 3. Cutting mechanism

[0063] See also Figure 2 The unloading mechanism includes a unloading plate 8, a discharging baffle 6, a discharging driving component for driving the discharging baffle 6, and a second sensor 10.

[0064] In one embodiment, the blanking plate 8 is connected to the movable lower plate 7, and the surface of the movable lower plate 7 is flush with the surface of the blanking plate 8; the surface of the blanking plate 8 and the surface of the movable lower plate 7 are inclined surfaces with the same inclination.

[0065] In one embodiment, the discharging drive assembly includes a driving cylinder connected to the discharging baffle 6, and the driving cylinder is connected to the signal of the second sensor 10. The second sensor 10 is installed at the discharging baffle 6. When the second sensor 10 detects the pipe fittings at the discharging baffle 6, it sends a discharging signal to the discharging drive assembly. The discharging drive assembly receives the discharging signal sent by the second sensor 10, and drives the discharging baffle 6 away from the movable lower plate 7 according to the discharging signal. When the discharging baffle 6 is driven away from the movable lower plate 7, a gap is formed between the discharging baffle 6 and the movable lower plate 7 to allow the pipe fittings to be inspected to roll down, and the pipe fittings to be inspected roll out from the lower plate 8 to the qualified product storage station; when the discharging baffle 6 is driven close to the movable lower plate 7, the discharging baffle 6 blocks the pipe fittings to be inspected on the movable lower plate 7.

[0066] In one embodiment, the movable lower plate 7 is connected to the discharging drive cylinder, and the discharging drive cylinder is connected to the signal of the second sensor 10. When the pipe to be detected does not pass through the gap between the movable lower plate 7 and the upper plate 5, the second sensor 10 cannot detect the pipe, and the second sensor 10 sends a signal to the discharging drive cylinder, and the discharging drive cylinder drives the movable lower plate 7 to descend, and the pipe rolls from the movable lower plate 7 to the defective product storage station (i.e., the defective product box 11).

[0067] The pipe straightness detection device provided by the present application adopts an inclined structural design, which utilizes the gravity and shape of the pipe to allow the pipe to roll freely without energy consumption. Furthermore, the present application realizes the mechanical automation of pipe detection through a feeding mechanism, a detection mechanism, and a feeding mechanism. In specific applications, it can be installed on an automatic detection machine to realize the straightness detection of the product; it can also be installed online to realize automatic detection, which is efficient and has low production costs.

[0068] The pipe straightness detection device provided in the present application replaces the traditional manual sorting method, reduces the labor intensity of the staff, reduces manual participation, improves the detection efficiency, and saves labor costs and time costs.

[0069] The technical features of the above embodiments may be arbitrarily combined (as long as there is no contradiction in the combination of these technical features). To make the description concise, not all possible combinations of the technical features in the above embodiments are described; these embodiments that are not explicitly written should also be considered to be within the scope of this specification.

[0070] The above is a relatively specific and detailed description of the present application through general description and specific embodiments. It should be understood that, based on the technical concept of the present application, several conventional adjustments or further innovations can be made to these specific embodiments; however, as long as they do not deviate from the technical concept of the present application, the technical solutions obtained by these conventional adjustments or further innovations also fall within the scope of protection of the claims of the present application.

Claims

1. A pipe straightness detection device, characterized in that: It includes feeding mechanism, testing mechanism and unloading mechanism, among which: The feeding mechanism comprises a bottom plate, an adjustment plate parallel to the bottom plate and arranged relatively spaced apart, a feeding plate and a feeding drive assembly for driving the feeding plate to move, one side of the bottom plate is connected to the feeding plate, the upper plate surface of the bottom plate is an inclined surface inclined toward the feeding plate, the gap between the bottom plate and the adjustment plate is adapted to the outer diameter of the pipe to be tested, the upper plate surface forms a feeding station for the pipe to be tested, and when the pipe to be tested rolls onto the feeding plate, the feeding plate is driven to rise, so that the pipe to be tested rolls onto the testing mechanism; The detection mechanism comprises a material receiving plate, a first material baffle plate arranged above the material receiving plate, a movable lower plate connected to the material receiving plate, an upper plate arranged parallel to and relatively spaced from the movable lower plate, and an adjustment component for adjusting the gap between the upper plate and the movable lower plate; the gap between the movable lower plate and the upper plate is the outer diameter size of the qualified pipe fittings; the pipe fittings to be detected ejected by the ejection plate are received by the material receiving plate and blocked by the first material baffle plate, and when the first material baffle plate is driven to rise, the pipe fittings to be detected roll along the material receiving plate to the movable lower plate; If the pipe to be inspected can pass through the gap between the movable lower plate and the upper plate, the pipe will be unloaded by the unloading mechanism to the qualified product storage station; if the pipe to be inspected does not pass through the gap between the movable lower plate and the upper plate, the movable lower plate is driven downward, and the pipe rolls from the movable lower plate to the defective product storage station.

2. The pipe straightness detection device according to claim 1, characterized in that: The gap between the bottom plate and the adjusting pressure plate forms a space for accommodating a plurality of pipes; The adjustment platen is provided with a first sensor, the first sensor is connected to the external automatic feeding device signal, and the external automatic feeding device feeds the material to the upper plate surface of the bottom plate after receiving the feeding signal sent by the first sensor; The adjusting platen is provided with a height adjusting member, and the height adjusting member is used to adjust the position of the adjusting platen, and further adjust the gap between the bottom plate and the adjusting platen.

3. The pipe straightness detection device according to claim 1, characterized in that: The bottom plate and the receiving plate are respectively arranged on opposite sides of the top plate, and a lifting track of the top plate is formed between the bottom plate and the receiving plate; The surface of the receiving plate for receiving the pipe to be inspected is higher than the upper surface of the bottom plate; The material pushing drive assembly includes a driving cylinder connected to the material pushing plate; when the material pushing plate is driven to descend to the initial position, the plate surface on the material pushing plate used for pushing the material is lower than the upper plate surface of the bottom plate, or is basically flush with the upper plate surface of the bottom plate; when the material pushing plate is driven to rise to the material pushing position, the plate surface on the material pushing plate used for pushing the material is higher than the plate surface of the material receiving plate used for receiving the pipe fittings to be inspected, or is basically flush with the plate surface of the material receiving plate used for receiving the pipe fittings to be inspected.

4. The pipe straightness detection device according to claim 1 or 3, characterized in that: The plate surface on the receiving plate for receiving the pipe to be inspected is flush with the plate surface on the movable lower plate for receiving the pipe to be inspected, and the two plate surfaces are inclined planes with the same inclination; The plate surface on the receiving plate for receiving the pipe fittings to be inspected is a slope inclined toward the movable lower plate.

5. The pipe straightness detection device according to claim 1, characterized in that: The first material baffle plate is connected to a first driving assembly, and the first driving assembly is used to drive the first material baffle plate to approach or move away from the material receiving plate; when the first material baffle plate is driven to rise, a gap is formed between the first material baffle plate and the material receiving plate to allow the pipe to be detected to roll down; when the first material baffle plate is driven to descend, the first material baffle plate blocks the pipe to be detected on the receiving plate; The first drive assembly includes a cylinder connected to the first material baffle plate; The top plate and the first baffle plate are L-shaped plates respectively.

6. The pipe straightness detection device according to claim 1, characterized in that: The movable lower plate is provided with bearing mounting seats on opposite sides thereof, wherein a linear bearing is installed in the bearing mounting seats, an optical axis is installed in the linear bearing, one end of the optical axis is connected to the upper plate, and an adjusting pad is provided in the gap between the movable lower plate and the upper plate; The linear bearing, the optical axis and the adjusting pad constitute an adjusting assembly for adjusting the gap between the upper plate and the movable lower plate.

7. The pipe straightness detection device according to claim 6, characterized in that: One end of the optical axis passes through the upper plate and is connected to the frame, and a washer and a nut are sleeved on the shaft body of the optical axis after it extends out of the upper plate; The height of the adjusting pad is consistent with the outer diameter of the qualified pipe fitting; Two adjusting pads are arranged opposite to each other in the gap between the movable lower plate and the upper plate; The planes where the two optical axes are located are perpendicular to the rolling path of the pipe to be inspected on the movable lower plate.

8. The pipe straightness detection device according to claim 1, characterized in that: The unloading mechanism includes an unloading plate, an unloading baffle, an unloading driving component for driving the unloading baffle, and a second sensor; The unloading plate is connected to the movable lower plate, and the plate surface of the movable lower plate is flush with the plate surface of the unloading plate; the plate surface of the unloading plate and the plate surface of the movable lower plate are inclined planes with the same inclination; The discharging drive assembly includes a driving cylinder connected to the discharging baffle, the driving cylinder is connected to the second sensor signal, the second sensor is installed at the discharging baffle, when the second sensor detects the pipe at the discharging baffle, it sends a discharging signal to the discharging drive assembly; The discharging drive assembly receives a discharging signal sent by the second sensor, and drives the discharging baffle plate away from the movable lower plate according to the discharging signal; When the discharge baffle is driven away from the movable lower plate, a gap is formed between the discharge baffle and the movable lower plate to allow the pipe to be inspected to roll down, and the pipe to be inspected rolls out from the discharge plate to the qualified product storage station; When the material discharging baffle is driven to approach the movable lower plate, the material discharging baffle blocks the pipe to be inspected on the movable lower plate.

9. The pipe straightness detection device according to claim 8, characterized in that: The movable lower plate is connected to the discharge driving cylinder, and the discharge driving cylinder is connected to the second sensor signal. When the pipe to be detected does not pass through the gap between the movable lower plate and the upper plate, the second sensor cannot detect the pipe, and the second sensor sends a signal to the discharge driving cylinder. The discharge driving cylinder drives the movable lower plate to descend, and the pipe rolls from the movable lower plate to the defective product storage station.

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