Steel pipe length measuring device

Abstract

The utility model discloses a steel pipe length measuring device which comprises a detection roller way formed by a plurality of carrier rollers arranged at equal intervals, one side of the roller way is a feeding port, the other side of the roller way is a discharging port, and a plurality of first photoelectric detection switches used for detecting material heads are arranged on the side close to the discharging port at equal intervals. A second photoelectric detection switch used for detecting material tails is fixed to the outer side of the feeding port, a sliding table is arranged between the second photoelectric detection switch and the feeding port of the roller way, a sliding table trolley capable of moving back and forth in the feeding direction is arranged on the sliding table, and a third photoelectric detection switch is fixed to the sliding table trolley. According to the device, in the production process of a production line, the accurate length of the product pipe can be detected in a full-automatic mode, and the behavior that the product pipe is hoisted to an open space at a stacking section to be detected manually due to the fact that the length of the product pipe needs to be detected again in the production process of the production line is avoided.

Description

Technical Field

[0001] The utility model relates to the field of pipe processing equipment, in particular to a steel pipe length measuring device. Background Art

[0002] The production process of high-frequency straight seam welded pipe involves rolling a steel strip through a die, gradually forming it into a round or rectangular tube in a series of passes. A high-frequency induction heating device heats the edges of the strip to a molten state. Simultaneously, the outer surface of the tube fuses the edges together under the action of external extrusion pressure. Since the two strip edges are still in a liquid state, the extrusion force squeezes out excess molten steel at the joint. The tube then passes through a sizing device to extrude the tube into the final pipe size. Finally, a sawing device is used to cut the tube to the required length. After the flying saw is completed, the final tube height is manually remeasured to ensure that the steel pipe produced by the production line meets production requirements.

[0003] Currently, the length of product pipes in most welding pipe units in the industry is generally measured by sawing devices. In batch production, if the product pipe length accuracy is high, the bundled product pipes need to be hoisted to a convenient measurement location in the stacking section for manual measurement. This traditional measurement method not only carries the risk of hoisting, but also delays the production line rhythm. It is impossible to accurately measure the product pipes within a batch, and additional personnel must be dispatched to complete the hoisting and inspection work, which increases costs. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a steel pipe length measuring device with high detection efficiency and high detection accuracy.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a steel pipe length measuring device, comprising a plurality of rollers arranged at equal intervals to form a detection roller conveyor, one side of the roller conveyor is a feed port, and the other side is a discharge port, and a plurality of first photoelectric detection switches for detecting the material head are arranged at equal intervals on the side close to the discharge port, a second photoelectric detection switch for detecting the material tail is fixed on the outside of the feed port, a slide is arranged between the second photoelectric detection switch and the feed port of the roller conveyor, a slide trolley that can move back and forth along the feed direction is provided on the slide, and a third photoelectric detection switch is fixed on the slide trolley.

[0006] Optionally, the distance between two adjacent first photoelectric detection switches is 20 cm-60 cm.

[0007] Optionally, the distance between two adjacent rollers is 100 cm to 200 cm.

[0008] Optionally, the length of the slide is greater than the distance between two adjacent first photoelectric detection switches.

[0009] Optionally, the slide includes a base, a screw is provided on the base along the feeding direction, the screw is connected to a servo motor, a slider is connected to the screw via a nut, and the slide trolley is fixed on the slider.

[0010] Optionally, the roller includes a roller bracket, a roller shaft is mounted on the roller bracket, the roller shaft is connected to the motor, and two frustum-shaped roller cylinders are installed on the roller shaft, and the sides of the two roller cylinders with smaller diameters are arranged opposite to each other.

[0011] Optionally, the first photoelectric detection switch is fixed on a switch seat, and the height of the switch seat is smaller than the height of the roller.

[0012] Compared with the prior art, the beneficial effect of the present invention is that the present device can fully automatically detect the precise length of the product tube during the production process of the production line, avoiding the need to lift the product tube to an open space for manual inspection in the stacking section due to the need to recheck the length of the product tube during the production process. This not only reduces the utilization rate of the driving but also directly eliminates the functional work station of rechecking the length of the product tube, greatly improving the production safety of the production line and reducing the demand for production line personnel, thereby increasing the production capacity of the production line and reducing production line investment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is an overall structural diagram of a steel pipe length measuring device provided by the utility model;

[0014] Figure 2 This is a structural diagram of the slide provided by the utility model;

[0015] Figure 3 It is a structural diagram of the roller provided by the utility model. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] As used in this application and the claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" are not intended to refer to the singular but may include the plural. Generally speaking, the terms "comprises" and "include" only indicate the inclusion of the steps and elements specifically identified, and these steps and elements do not constitute an exclusive list. A method or apparatus may also include other steps or elements.

[0018] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0019] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is solely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application. Furthermore, while the terms used in this application are selected from commonly known and commonly used terms, some terms mentioned in this specification may have been selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant sections of this description. Furthermore, this application should be understood not only by the actual terms used, but also by the meaning implied by each term.

[0020] Reference Figure 1 The present embodiment provides a steel pipe length measuring device, including a roller conveyor, which is composed of a plurality of equally spaced rollers 1. The distance between two adjacent rollers 1 is 100cm-200cm, and 150cm is used in the present embodiment. The steel pipe 2 to be detected is dragged forward by the rollers 1 along the forward direction of the roller conveyor. In the present embodiment, the left side of the roller conveyor is the feed port, and the right side is the discharge port. A plurality of first photoelectric detection switches 3 for detecting the material head are arranged at equal intervals on one side near the discharge port. The distance between two adjacent first photoelectric detection switches 3 is 20cm-60cm, and 50cm is used in the present embodiment.

[0021] Furthermore, a second photoelectric detection switch 4 for detecting the tail of the material is fixed on the outside of the feed port, and a slide 5 is arranged between the second photoelectric detection switch 4 and the feed port of the roller, and a slide trolley 6 that can move back and forth along the feed direction is provided on the slide 5, and a third photoelectric detection switch 7 is fixed on the slide trolley 6.

[0022] It should be noted that the length of the slide 5 is greater than the distance between two adjacent first photoelectric detection switches 3 . In this embodiment, the length of the slide is 70 cm.

[0023] Reference Figure 2 The slide 5 includes a base 51, a screw 52 is provided on the base 51 along the feeding direction, the screw 52 is connected to the servo motor 53, a slider 54 is connected to the screw 52 through a nut, and the slide trolley 6 is fixed on the slider 54. The servo motor 53 drives the screw 52 to rotate, which can drive the slide trolley 6 to move back and forth on the slide through the slider 54.

[0024] Reference Figure 3 The roller 1 includes a roller bracket 11, on which a roller shaft 12 is mounted. The roller shaft 12 is connected to a motor 13. Two frustum-shaped roller drums 14 are mounted on the roller shaft 12, with the smaller diameter sides of the two roller drums 14 facing each other. The motor 13 rotates, thereby driving the roller shaft 12 to rotate. The geek drives the roller drums 14 to rotate, and the friction force drives the steel pipe to be inspected forward in the direction of rotation.

[0025] In this embodiment, the first photoelectric detection switch 3 is fixed on the switch seat 8, and the height of the switch seat 8 is less than the height of the roller 1. The reason for this is that the height of the roller 1 is relatively high. Setting up the first photoelectric detection switch 3 through the switch seat 8 can not only improve the detection accuracy, but also avoid damage to the first photoelectric detection switch 3.

[0026] The measurement process of the steel pipe length measuring device provided in this embodiment is as follows:

[0027] Step 1: The steel pipe 2 enters the detection roller from the left side. After the tail of the steel pipe 2 passes the second photoelectric detection switch 4, all the first photoelectric detection switches 3 start to work. When one of the first photoelectric detection switches 3 detects the material head signal, the roller 1 stops working and the steel pipe 2 stops;

[0028] Step 2: The servo motor 53 drives the slide trolley 6 to start from the origin, and drives the third photoelectric detection switch 7 to move to the left until the detection switch detects the end of the steel pipe 3. The slide trolley 6 stops and the distance the slide travels is a.

[0029] Step 3: The distance from the original position of the slide 5 to the photoelectric detection switch of each material head is known. Assuming that the distance from the original position of the slide 5 to the nth first photoelectric detection switch 3 is b, the length of the steel pipe 2 can be calculated as L=a+b.

[0030] As can be seen from the above embodiments, the present device can fully automatically detect the precise length of product tubes during the production process of the production line, thereby avoiding the need to manually lift the product tubes from the stacking section to an open area for rechecking the product tube length during the production process. This not only reduces the use of the driving device but also directly eliminates the functional station for rechecking the product tube length, greatly improving the production safety of the production line and reducing the demand for production line personnel, thereby increasing the production capacity of the production line and reducing production line investment.

[0031] The above description is only an embodiment of the present invention and does not limit the scope of protection of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the scope of protection of the present invention.

Claims

1. A steel pipe length measuring device, characterized in that: A detection roller conveyor is formed by multiple rollers arranged at equal intervals, one side of the roller conveyor is the feed port, and the other side is the discharge port. Multiple first photoelectric detection switches for detecting the material head are arranged at equal intervals on the side close to the discharge port, and a second photoelectric detection switch for detecting the material tail is fixed on the outer side of the feed port. A slide is provided between the second photoelectric detection switch and the feed port of the roller conveyor, and a slide trolley that can move back and forth along the feed direction is provided on the slide, and a third photoelectric detection switch is fixed on the slide trolley.

2. The steel pipe length measuring device according to claim 1, characterized in that: The distance between two adjacent first photoelectric detection switches is 20 cm-60 cm.

3. The steel pipe length measuring device according to claim 1, characterized in that: The distance between two adjacent rollers is 100cm-200cm.

4. The steel pipe length measuring device according to claim 1, characterized in that: The length of the slide is greater than the distance between two adjacent first photoelectric detection switches.

5. The steel pipe length measuring device according to claim 1, characterized in that: The slide comprises a base, a screw is provided on the base along the feeding direction, the screw is connected to a servo motor, a slider is connected to the screw via a nut, and the slide trolley is fixed on the slider.

6. The steel pipe length measuring device according to claim 1, characterized in that: The roller includes a roller bracket, a roller shaft is mounted on the roller bracket, the roller shaft is connected to the motor, and two frustum-shaped roller cylinders are installed on the roller shaft, and the sides of the two roller cylinders with smaller diameters are arranged opposite to each other.

7. The steel pipe length measuring device according to claim 1, characterized in that: The first photoelectric detection switch is fixed on a switch seat, and the height of the switch seat is smaller than the height of the roller.

Images