Pipe head positioning and cutting mechanism of welded pipe receiving unit, welded pipe receiving unit, welded pipe pipe receiving unit and welded pipe

Abstract

The utility model provides a pipe head positioning and cutting mechanism of a welded pipe receiving unit, the welded pipe receiving unit, a welded pipe making and receiving unit and a welded pipe. The pipe head positioning and cutting mechanism comprises a pipe making unit, a cutter mechanism and a photoelectric sensor, the pipe making unit is located on the upstream of the stroke of the cutter mechanism. A transmitting end and a receiving end of the photoelectric sensor are arranged on the front side of the pipe making unit and are used for identifying a positioning through hole formed in a strip before a welded pipe is formed; and the photoelectric sensor is associated with the cutter mechanism and is used for triggering the cutter mechanism to execute a cutting action. According to the scheme, the positioning precision of the welded pipe head is improved, and the equipment transformation cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe making, in particular to a pipe head positioning and cutting mechanism of a welded pipe receiving unit, a welded pipe receiving unit, a welded pipe receiving unit and a welded pipe. Background Art

[0002] Welded pipe usually refers to the heat exchange tube in air conditioner. It is made of strip with certain width and thickness through multi-stage round rolling rollers of pipe making machine into tube shape, and then the joints are welded by pipe welding machine to form welded pipe.

[0003] After the welded pipe is prepared into a tube, it needs to be collected into a disc shape with the help of a welded pipe collecting machine, and finally shipped to downstream manufacturers in the form of a disc to be put into use as a pipe.

[0004] In this process, the speed of forming and collecting welded pipes is relatively high, the role of humans is very limited, and the risk is relatively high, so it is usually designed as an automatically operated production line.

[0005] Among them, the positioning of the welded pipe head is one of the relatively critical steps. Its main purpose is to determine the position of the welded pipe head, and then control the cutter in the receiving unit to cut the welded pipe based on the position of the pipe head, so as to finally keep the total length of each coil of welded pipe at the set length.

[0006] At present, the positioning of the pipe head of the welded pipe depends on the color code sensor, which is used to identify the welding points on the welded pipe. Combined with the walking speed of the welded pipe, it is determined whether the head position of the welded pipe reaches the preset position, so as to complete the accurate cutting action in the receiving unit. For example, the application number is 2019109006025, and the name is: an invention patent for a single-sided welded pipe receiving device, which is a technical solution using a color code sensor owned by the applicant.

[0007] However, with the performance improvement of welding pipe equipment and material receiving equipment, the operating speed has been greatly improved, and the solder joints have been weakened due to process improvement, resulting in insufficient sensitivity of conventional color code sensors. The cost of customizing special high-precision color code sensors is relatively high. Therefore, a new pipe head positioning method is needed to solve this problem.

[0008] In order to solve the above problems, people have been seeking an ideal technical solution. Utility Model Content

[0009] The utility model aims to address the deficiencies of the prior art and thus provide a pipe head positioning and cutting mechanism for a welding pipe receiving unit, a welding pipe receiving unit, a welding pipe receiving unit and a welding pipe, which can improve positioning accuracy and control positioning costs.

[0010] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a pipe head positioning and cutting mechanism of a welding pipe receiving unit, comprising a pipe making unit, a cutting mechanism and a photoelectric sensor;

[0011] The pipe making unit is located upstream of the travel of the cutting mechanism;

[0012] The transmitting end and the receiving end of the photoelectric sensor are arranged at the front side of the pipe making unit, and are used to identify the positioning perforations opened on the strip before the welded pipe is formed;

[0013] The photoelectric sensor is associated with the cutter mechanism and is used to trigger the cutter mechanism to perform a cutting action.

[0014] Based on the above, the transmitting end and the receiving end of the photoelectric sensor are respectively arranged above and below the front side of the pipe making unit.

[0015] Based on the above, the photoelectric sensor and the drive unit of the cutter mechanism are associated through a controller.

[0016] A welding pipe receiving unit, comprising the pipe head positioning and cutting mechanism of the welding pipe receiving unit and at least two groups of receiving units;

[0017] The at least two groups of material receiving units are arranged downstream of the cutting mechanism and are arranged in sequence. In the material receiving state, only one material receiving unit always performs the material receiving action.

[0018] A welded pipe receiving unit, comprising an unwinding unit, a punching unit, a material storage unit, a pipe making unit and a welded pipe receiving unit;

[0019] The unwinding unit is used to unwind the strip material to the storage unit;

[0020] The punching unit is arranged between the unwinding unit and the storage unit, and is used for punching holes on the strip;

[0021] The material storage unit is used to load the stored strip material to the pipe making unit;

[0022] The pipe making unit is used to receive the strip material and roll and weld the strip material into a welded pipe;

[0023] The welded pipe receiving unit is used to receive the manufactured welded pipe into a disc shape;

[0024] The transmitting end and the receiving end of the photoelectric sensor in the welded pipe receiving unit are used to identify the holes located on the strip.

[0025] A welded pipe is provided with a positioning through hole at the pipe head of the welded pipe, and the positioning through hole comprises a hole formed on the pipe wall of the welded pipe.

[0026] Based on the above, the positioning perforation is a rectangular hole, and the length direction of the rectangular hole is consistent with the length direction of the welded pipe.

[0027] The material of welded pipe is steel or iron.

[0028] The present invention has substantial features and progress over the prior art. Specifically, the present invention abandons the traditional color code sensor and uses a widely used photoelectric sensor for positioning. The photoelectric sensor itself has a transmitting end and a receiving end, which solves the performance defect of the color code sensor that needs to identify the object. Therefore, its recognition accuracy has a natural accuracy advantage over the color code sensor, and can effectively cope with a series of current problems such as the increase in the speed of pipe making and collecting, and the weakening of the characteristics of the weld points in the welded pipe due to the process. The photoelectric sensor designed in this scheme can not only effectively ensure the cutting accuracy of the welded pipe, but also can be used as a sensor for positioning the weld points in the process of pipe making by welding. Moreover, since the photoelectric sensor is widely used, the cost is lower than that of custom-made special color code sensors, and the difficulty of transformation is lower.

[0029] Compared with the welded pipe and pipe making unit, it is necessary to cooperate with the photoelectric sensor to open a positioning perforation on the welded pipe. The positioning perforation is mainly effective before the welded pipe is formed, that is, when it is still in the coil state, the positioning perforation can be convenient for the photoelectric sensor to identify. This transformation does not affect the efficiency of pipe making and collecting in the process flow. Only one punching machine is required, and the transformation cost is relatively low. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the pipe head positioning and cutting mechanism of the welding pipe receiving unit in Example 1 of the utility model.

[0031] Figure 2 It is a structural schematic diagram of the welded pipe receiving unit in Example 2 of the utility model.

[0032] Figure 3 It is a structural schematic diagram of the welded pipe receiving unit in Example 3 of the utility model.

[0033] Figure 4 It is a structural schematic diagram of the welded pipe in Example 4 of the utility model.

[0034] In the figure: 1. frame; 2. pipe making unit; 3. cutter mechanism; 4. photoelectric sensor; 5. welded pipe; 6. positioning perforation; 7. receiving tray; 8. linear guide part; 9. reversing guide part; 11. unwinding unit; 12. punching unit; 13. pipe making unit; 14. welded pipe receiving unit; 41. transmitting end; 42. receiving end. DETAILED DESCRIPTION

[0035] The technical solution of the utility model is further described in detail below through specific implementation methods.

[0036] Example 1

[0037] like Figure 1 As shown, a pipe head positioning and cutting mechanism of a welding pipe receiving machine unit includes a frame 1, a pipe making machine unit 2, a cutting mechanism 3 and a photoelectric sensor 4.

[0038] The pipe making unit 2 is integrally arranged on the frame 1 and is located upstream of the travel of the cutting mechanism 3;

[0039] The transmitting end 41 and the receiving end 42 of the photoelectric sensor 4 are arranged at the front side of the pipe making unit 2, and are arranged above and below the guide direction as the center, and are used to identify the positioning perforation 6 arranged on the strip before the welded pipe 5 is formed into a pipe;

[0040] The photoelectric sensor 4 is associated with the cutter mechanism 3 and is used to trigger the cutter mechanism 3 to perform a cutting action.

[0041] During actual installation, the transmitting end 41 and the receiving end 42 of the photoelectric sensor 4 are respectively arranged above and below the front side of the pipe making unit 2 .

[0042] In the solution without a control module, the photoelectric sensor 4 and the drive unit of the cutter mechanism 3 are associated through a controller.

[0043] Figure 1 In order to facilitate the understanding of the installation position, the attached drawings need to be specially explained. For the installation position of the photoelectric sensor 4, Figure 1 The figure shows the side view, where the upper and lower structures centered on the welded pipe can be seen, that is, the photoelectric sensor is installed in a vertical direction; for the rear cutter part, Figure 1 The figure is a top view, where the left and right structures centered on the welded pipe can be seen, that is, the cutter is installed horizontally; in general, Figure 1 The two structures express different directions in order to clearly express the structural principles.

[0044] Working principle description:

[0045] First, before the welded pipe 5 is formed into a tube, a positioning perforation 6 is set at a preset position on the coil in advance. This process is completed during the strip loading stage. When the position of the positioning perforation 6 passes the photoelectric sensor 4, the photoelectric sensor 4 triggers a switch signal, and the position is recorded. The speed of the unit is stable and the error is relatively small. Therefore, the signal can be used as a trigger signal to drive the cutter mechanism 3 to cut the welded pipe, completing the continuous action of positioning identification and cutting.

[0046] Generally speaking, there is a delay from the time the photoelectric sensor 4 is triggered to the time the cutter mechanism 3 starts cutting, and the welding pipe also moves at a certain speed. Therefore, during installation, it is necessary to determine the relationship between the delay time and the moving speed of the welding pipe through experiments, and then determine the installation distance between the photoelectric sensor 4 and the cutter mechanism 3.

[0047] Example 2

[0048] like Figure 2 As shown, the main difference between this embodiment and embodiment 1 is: a welding pipe receiving unit, comprising the welding pipe receiving unit pipe head positioning and cutting mechanism and at least two sets of receiving units;

[0049] The at least two groups of material receiving units are arranged downstream of the cutting mechanism and are arranged in sequence. In the material receiving state, only one material receiving unit always performs the material receiving action.

[0050] Each group of receiving units includes a pipe making unit and a receiving tray 7. The guide wheel group includes a linear guide part 8 and a reversing guide part 9. The linear guide part 8 is used to receive the welded pipe from above, and the reversing guide part 9 is used to horizontally turn the welded pipe to a certain angle and then push it into the receiving tray. The receiving tray is used to receive the material.

[0051] When the upstream receiving tray is full, its reversing guide part retreats, so that the welded pipe no longer turns here but enters the next set of receiving units. The reversing guide part of the next set of receiving units works and starts receiving materials.

[0052] Different groups of receiving units operate alternately until the receiving is completed.

[0053] Example 3

[0054] like Figure 3 As shown, a welded pipe receiving unit comprises an unwinding unit 11, a punching unit 12, a material storage unit 13, a pipe making unit 14 and the welded pipe receiving unit 15.

[0055] The unwinding unit 11 is used to unwind and unfold the strip. The specific structure of the unwinding unit 11 is an unwinding device driven by a motor, which is used to unfold the rolled strip and then enter the storage unit 13 for relay caching. The mechanism in the storage unit 13 can be a secondary winding mechanism or a storage mechanism composed of some storage rollers.

[0056] The punching unit 12 is arranged between the unwinding unit 11 and the storage unit 13, and is used to punch holes in the strip. The position of the hole needs to be specifically determined, preferably in the middle position, to facilitate the installation and triggering of the photoelectric sensor.

[0057] The strip enters the material storage unit 13 for the purpose of relay buffering. Before the material storage unit 13 , it is all in the preparation stage, so the punching unit 12 is arranged before the material storage unit 13 .

[0058] The storage unit 13 feeds the released strip to the pipe making unit 14;

[0059] The pipe making unit 14 is used to receive the strip and roll and weld the strip into a welded pipe. The pipe making unit 14 is a conventional pipe making unit 14 in the art without any improvement.

[0060] The welded pipe receiving unit 15 is used to receive the manufactured welded pipe into a disc shape;

[0061] The transmitting end and the receiving end of the photoelectric sensor in the welded pipe receiving unit 15 are used to identify the positioning perforations 6 formed on the strip before the welded pipe 5 is formed.

[0062] This embodiment is based on a whole production line setting, so that punching, pipe making, identification, cutting and material collection are carried out continuously, thereby improving the degree of automation.

[0063] Example 4

[0064] like Figure 4 As shown, a welded pipe 5 is made of steel, and a positioning through hole 6 is arranged at the pipe head of the welded pipe 5. The positioning through hole 6 includes a hole formed on the pipe wall of the welded pipe, and the center line of the hole passes through the axis of the welded pipe. In other embodiments, iron can also be used.

[0065] In order to ensure the recognition accuracy, the positioning perforation 6 is a rectangular hole, and the length direction of the rectangular hole is consistent with the length direction of the welded pipe. The purpose is to prevent the strip from moving too fast. When the rectangular hole passes through the photoelectric sensor, a sufficiently long path can be retained so that the photoelectric sensor can recognize it.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A pipe head positioning and cutting mechanism for a welding pipe receiving unit, characterized in that: It includes a pipe making unit, a cutting mechanism and a photoelectric sensor; The pipe making unit is located upstream of the travel of the cutting mechanism; The transmitting end and the receiving end of the photoelectric sensor are arranged at the front side of the pipe making unit, and are used to identify the positioning perforations opened on the strip before the welded pipe is formed; The photoelectric sensor is associated with the cutter mechanism and is used to trigger the cutter mechanism to perform a cutting action.

2. The pipe head positioning and cutting mechanism of the welding pipe receiving unit according to claim 1 is characterized in that: The transmitting end and the receiving end of the photoelectric sensor are respectively arranged above and below the front side of the pipe making unit.

3. The pipe head positioning and cutting mechanism of the welding pipe receiving unit according to claim 1 or 2, characterized in that: The photoelectric sensor and the drive unit of the cutter mechanism are associated via a controller.

4. A welded pipe receiving unit, characterized in that: It comprises the pipe head positioning and cutting mechanism of the welding pipe receiving unit as claimed in any one of claims 1 to 3 and at least two groups of receiving units; The at least two groups of material receiving units are arranged downstream of the cutting mechanism and are arranged in sequence. In the material receiving state, only one material receiving unit always performs the material receiving action.

5. A welded pipe receiving unit, characterized in that: It comprises an unwinding unit, a punching unit, a material storage unit, a pipe making unit and the welded pipe receiving unit according to claim 4; The unwinding unit is used to unwind the strip material to the storage unit; The punching unit is arranged between the unwinding unit and the storage unit, and is used for punching holes on the strip; The material storage unit is used to load the stored strip material to the pipe making unit; The pipe making unit is used to receive the strip material and roll and weld the strip material into a welded pipe; The welded pipe receiving unit is used to receive the manufactured welded pipe into a disc shape; The transmitting end and the receiving end of the photoelectric sensor in the welded pipe receiving unit are used to identify the holes located on the strip.

6. A welded pipe, characterized in that: A positioning through hole is arranged at the pipe head of the welded pipe, and the positioning through hole comprises a hole formed on the pipe wall of the welded pipe.

7. The welded pipe according to claim 6, characterized in that: The positioning perforation is a rectangular hole, and the length direction of the rectangular hole is consistent with the length direction of the welding pipe.

8. The welded pipe according to claim 7, characterized in that: The welded pipe is made of steel or iron.

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