Pipe wall thickness monitoring device

Abstract

The utility model discloses a pipe wall thickness monitoring device, which comprises a mouth mold, a core rod, an inner support ring and a laser range finder, the core rod is positioned in the mouth mold, an annular gap runner is formed between the core rod and the mouth mold, the annular gap runner comprises an extrusion end, the inner support ring is arranged at one end of the core rod facing the extrusion end, the outer wall of the inner support ring can support a pipe extruded from the annular gap runner, and the laser range finder is arranged on the outer wall of the inner support ring. The inner wall of the pipe is limited by the inner supporting ring, the laser range finder can effectively and accurately measure the distance between the outer wall of the pipe and the laser range finder, and fluctuation of the thickness of the pipe is monitored in real time.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipe production equipment technical field more specifically, relate to a pipe wall thickness monitoring device. BACKGROUND

[0002] At present, in the extrusion pipe field, the wall thickness is not up to standard, and the large deviation is still one of the main reasons of the pipe weight overweight, and the timely intervention of manual work can effectively avoid the generation of the problem. However, in the actual production process, due to the inability to pay attention to the deviation fluctuation of the pipe wall thickness at any time, the front post personnel cannot timely adjust the pipe wall thickness, which means that the pipe weight is often wasted. Therefore, it is of great significance to provide a pipe wall thickness real-time monitoring device, and thus a technical scheme is needed to solve the above problems. UTILITY MODEL CONTENTS

[0003] The utility model discloses a pipe wall thickness monitoring device can monitor the wall thickness of pipe when extruding pipe, and overcome the deficiency of prior art.

[0004] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] The utility model discloses a pipe wall thickness monitoring device, including mouth mould, plug, inner support ring, laser range finder, the plug is located in the mouth mould, the annular gap flow channel is formed between the plug and the mouth mould, the annular gap flow channel includes extrusion end, the inner support ring is installed to one end of the plug towards the extrusion end, the outer wall of the inner support ring can support the pipe that extrudes from the annular gap flow channel, the measuring point of the laser range finder is towards the outer wall of the inner support ring.

[0006] Further, the inner support ring includes a first ring wall, the first ring wall is conical, the first ring wall includes a small diameter end and a large diameter end, the small diameter end is located at one end of the inner support ring towards the plug, the diameter of the small diameter end is less than the minimum diameter of the annular gap flow channel, and the diameter of the large diameter end is greater than the minimum diameter of the annular gap flow channel and less than the maximum diameter of the annular gap flow channel.

[0007] Further, the inner support ring includes a second ring wall, the large diameter end is connected with the second ring wall, the second ring wall is a flat annular surface, and the measuring point of the laser range finder is located in the range of the second ring wall.

[0008] Further, the connecting edge of the large diameter end and the second ring wall is provided with a round corner.

[0009] Further, the inner support ring comprises a connecting piece and a ring body, the core rod is provided with a channel, the connecting piece is fixedly installed on the core rod, the connecting piece is located at least partially in the channel, the connecting piece is threadedly connected with the ring body, and the connecting piece is located at least partially in the ring body.

[0010] Further, the connecting piece is provided with a through hole, the through hole is communicated with the channel and the ring body, the ring body is provided with a ventilation hole, and the ventilation hole is communicated with the inner wall and the outer wall of the ring body.

[0011] Further, the laser range finder is provided with a plurality of laser range finders, and the plurality of laser range finders are distributed in a ring shape with the inner support ring as the center.

[0012] The utility model discloses the beneficial effect is:

[0013] The utility model discloses install inner support ring at the extrusion end of pipe material, and the inner wall of pipe material is supported and limited to produce expansion by the conical first ring wall of inner support ring, and the wall thickness of pipe material can be effectively and accurately measured from a plurality of points by a plurality of laser range finders when the pipe material passes through the flat second ring wall of inner support ring, the distance between the outer wall of pipe material and laser range finder is measured, and the fluctuation of pipe material thickness is monitored in real time. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic view of the embodiment.

[0015] Figure 2 It is Figure 1 It is a sectional view in direction A.

[0016] Figure 3 It is Figure 2 It is an enlarged view of B.

[0017] Fig. 1 is a schematic view of the embodiment. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0019] As Figure 1 ,Figure 2 、 Figure 3 As shown in FIGS. 1-4, the embodiment discloses a pipe wall thickness monitoring device, which comprises a die 1, a mandrel 2, an inner support ring 3 and a laser range finder 4. The mandrel 2 is located in the die 1, and an annular gap flow channel 11 is formed between the mandrel 2 and the die 1. The annular gap flow channel 11 comprises an extrusion end 111, and the pipe can be extruded from the extrusion end 111 in the annular gap flow channel 11. The inner support ring 3 comprises a connecting piece 31 and a ring body 32. The mandrel 2 is provided with a channel 21. The connecting piece 31 is fixedly installed on the mandrel 2 and at least partially located in the channel 21. The connecting piece 31 is threadedly connected with the ring body 32. The ring body 32 is detachably installed and can be replaced. The ring body 32 of different lengths or different outer diameters can be replaced and adjusted. The connecting piece 31 is at least partially located in the ring body 32. The inner support ring 3 is installed on one end of the mandrel 2 which faces the extrusion end 111.

[0020] The inner support ring 3 comprises a first ring wall 321 and a second ring wall 322. The first ring wall 321 and the second ring wall 322 constitute the outer wall of the ring body 32. The first ring wall 321 is conical. The first ring wall 321 comprises a small-diameter end 3211 and a large-diameter end 3212. The small-diameter end 3211 is located at one end of the inner support ring 3 which faces the mandrel 2. The diameter of the conical first ring wall 321 gradually increases away from the extrusion end 111. The diameter of the small-diameter end 3211 is smaller than the minimum diameter of the annular gap flow channel 11. The diameter of the large-diameter end 3212 is greater than the minimum diameter of the annular gap flow channel 11 and smaller than the maximum diameter of the annular gap flow channel 11. The first ring wall 321 can support the inner wall of the extruded pipe to prevent deformation and guide the pipe to the second ring wall 322.

[0021] The large-diameter end 3212 of the first ring wall 321 is connected with the second ring wall 322. The second ring wall 322 is a flat annular surface. The measurement point of the laser range finder 4 is located within the range of the second ring wall 322. Since the inner wall of the pipe is limited by the inner support ring 3, there is no deviation fluctuation in the wall thickness at the position of the second ring wall 322. Therefore, the laser range finder 4 only needs to be aligned with the second ring wall 322 to effectively and accurately measure the distance between the outer wall of the pipe and the laser range finder 4, thereby monitoring the real-time wall thickness of the pipe extrusion. In the actual production process, if the numerical value fluctuates greatly and lasts for a long time by comparing with the initial set standard value, it proves that the wall thickness of the pipe in this direction has exceeded the wall thickness required by normal production. At this time, through the alarm prompt, the production personnel can adjust the wall thickness of the pipe product in this direction according to the laser range finder 4 which alarms.

[0022] More preferably, a fillet 323 is arranged at the connecting edge of the large-diameter end 3212 and the second ring wall 322, which better connects the first ring wall 321 and the second ring wall 322 and plays a transition role.

[0023] More preferably, the connecting piece 31 is provided with a through hole 311, the through hole 311 is communicated with the channel 21 and the ring body 32, the ring body 32 is provided with a ventilation hole 324, the ventilation hole 324 is communicated with the inner wall and the outer wall of the ring body 32, and the formation of the closed cavity is prevented from affecting the normal production of the pipe.

[0024] The laser range finder 4 is provided with multiple, the measuring point of the laser range finder 4 is towards the outer wall of the inner support ring 3, multiple laser range finders 4 are circularly distributed with the inner support ring 3 as the center, the wall thickness of the pipe can be monitored from multiple points, the point of the wall thickness anomaly can be more accurately judged, and the staff can be conveniently adjusted.

[0025] The above only is the preferred implementation manner of the present application, the protection scope of the present application is not only limited to the above-mentioned embodiments, and all technical solutions under the idea of the present application belong to the protection scope of the present application. It should be pointed out that, for ordinary skilled in the art, some improvements and decorations without departing from the principle of the present application are also regarded as the protection scope of the present application.

Claims

1. A pipe wall thickness monitoring device, characterized by, The utility model relates to a pipe extrusion device, including mouth mould (1), core rod (2), inner support ring (3), laser range finder (4), the core rod (2) is located in the mouth mould (1), the annular gap flow channel (11) is formed between the core rod (2) with the mouth mould (1), the annular gap flow channel (11) includes extrusion end (111), the inner support ring (3) is installed to the one end of the core rod (2) towards the extrusion end (111), the outer wall of the inner support ring (3) can support the pipe material extruded from the annular gap flow channel (11), the measuring point of laser range finder (4) is towards the outer wall of the inner support ring (3).

2. The apparatus for monitoring the wall thickness of a pipe according to claim 1, wherein The inner support ring (3) includes first ring wall (321), the first ring wall (321) is conical, the first ring wall (321) includes small diameter end (3211) and large diameter end (3212), the small diameter end (3211) is located at the one end of the inner support ring (3) towards the core rod (2), the diameter of small diameter end (3211) is less than the minimum diameter of the annular gap flow channel (11), the diameter of large diameter end (3212) is greater than the minimum diameter of the annular gap flow channel (11) and less than the maximum diameter of the annular gap flow channel (11).

3. The apparatus of claim 2, wherein, The inner support ring (3) includes second ring wall (322), the large diameter end (3212) is connected second ring wall (322), the second ring wall (322) is flat annular surface, the measuring point of laser range finder (4) is located in the range of second ring wall (322).

4. The apparatus for monitoring the wall thickness of a pipe according to claim 3, wherein The connecting edge of large diameter end (3212) and second ring wall (322) is provided with round corner (323).

5. The apparatus for monitoring the wall thickness of a pipe according to claim 1, wherein The inner support ring (3) includes connecting piece (31) and ring body (32), the core rod (2) is provided with channel (21), the connecting piece (31) is fixedly installed on the core rod (2), the connecting piece (31) is at least partially located in the channel (21), the connecting piece (31) is screwed with the ring body (32), and the connecting piece (31) is at least partially located in the ring body (32).

6. The apparatus for monitoring the wall thickness of a pipe according to claim 5, wherein The connecting piece (31) is provided with through hole (311), the through hole (311) is communicated with the channel (21) and the ring body (32), and the ring body (32) is provided with air hole (324), which is communicated with the inner wall and the outer wall of the ring body (32).

7. The apparatus for monitoring the wall thickness of a pipe according to claim 1, wherein The laser range finder (4) is provided with a plurality of laser range finders (4), and the plurality of laser range finders (4) are distributed in a ring shape with the inner support ring (3) as the center.

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