Automatic centering device for pipe code spraying

Abstract

The utility model discloses an automatic centering device for pipe code spraying, which comprises a pipe clamping and adjusting mechanism and a shooting mechanism, the shooting mechanism used for judging the position of a pipe co-extrusion strip is arranged along the pipe extrusion direction, the pipe clamping and adjusting mechanism is arranged behind the shooting mechanism, and the shooting mechanism comprises a lens and a signal processing device. The signal processing device is electrically connected with the lens, the pipe clamping and adjusting mechanism is connected with the signal processing device through a signal, a 1 / 4 circular gear is arranged on the pipe clamping and adjusting mechanism, a rotating mechanism used for rotating the pipe clamping and adjusting mechanism is arranged beside the pipe clamping and adjusting mechanism, and the rotating mechanism is matched with the 1 / 4 circular gear. According to a signal transmitted by the shooting mechanism, the clamping adjusting mechanism enables a clamping air cylinder to stretch out and hold a pipe tightly, the rotating mechanism rotates by a needed angle, then the pipe is driven to rotate by the same angle, it is guaranteed that no co-extrusion strip exists in the code spraying and printing range, and then the situation that code spraying and printing are conducted on the pipe co-extrusion strip is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of tubular product manufacturing, and particularly relates to a device for automatically centering tubular product code spraying. BACKGROUND

[0002] PP-R pipes have been widely used in the home decoration industry due to their excellent performance. GB / T 18742.2-2017 clearly states that there should be permanent markings on the pipes, and the marking content includes: manufacturer name, trademark, product name, specification and size, standard number, production date, and special performance information. Currently, there are four equal parts of co-extrusion strips on hot water pipes. Because the gap between the co-extrusion strips is relatively small, the code information is easily sprayed on the co-extrusion strips, which greatly reduces the aesthetics of the code spraying and causes poor user experience.

[0003] The length of the extrusion production line of the PP-R pipe is generally 40-50 meters, but the production line only provides power for the forward movement of the pipe in the process of synchronous traction. Therefore, during the extrusion process, the pipe may rotate to some extent due to the pressure of synchronous traction and the wear of the traction belt. This type of rotation is difficult to detect and avoid in advance. The four co-extrusion strips of the hot water pipe are evenly distributed in the circumferential direction, and the distance between every two co-extrusion strips is only 1 / 4 of a circle. For small-diameter pipes, the code spraying often occurs on the co-extrusion strips, which reduces the clarity and aesthetics of the representation. This situation often directly leads to the rejection of the pipe and reduces the product's pass rate.

[0004] The usual way to handle the problem of pipe rotation is for workers to rotate the pipe entering the synchronous traction, so that the co-extrusion strips are out of the range of code spraying. However, this treatment method has poor treatment efficiency and treatment effect, which is not conducive to high-speed production of pipes, and often leads to an increase in the rejection rate due to operator errors. Therefore, the present application provides a device for automatically centering code spraying, which can automatically adjust the code spraying to the middle of the pipe co-extrusion strips, effectively solving the problem of pipe rejection caused by code spraying on the co-extrusion strips. SUMMARY

[0005] In view of the problems existing in the prior art, the purpose of the present application is to provide a device for automatically centering code spraying of tubular products, which ensures that there are no co-extrusion strips in the code spraying range, thereby avoiding the situation of code spraying on the pipe co-extrusion strips.

[0006] To achieve the above-mentioned purpose, the technical solution of the present application is as follows:

[0007] The utility model provides a kind of pipe material code spraying automatic centering device, including pipe material clamping adjustment mechanism and shooting mechanism, and it is provided with the shooting mechanism for determining pipe material co-extrusion strip position along pipe material extrusion direction, the shooting mechanism rear is equipped with pipe material clamping adjustment mechanism, the shooting mechanism includes lens and signal processing device, the signal processing device is electrically connected with lens, and the pipe material clamping adjustment mechanism is connected with signal processing device by signal, the pipe material clamping adjustment mechanism is equipped with 1 / 4 circular gear, and the pipe material clamping adjustment mechanism is equipped with rotating mechanism for its rotation on one side, wherein rotating structure is matched with 1 / 4 circular gear.

[0008] Further, the pipe material clamping adjustment mechanism includes a support cylinder, and a plurality of clamping cylinders are uniformly arranged on the outer surface of the support cylinder in the circumferential direction.

[0009] Further, the rotating mechanism includes a servo motor and a connecting gear, the output end of the servo motor is provided with a turbine, the turbine is engaged with the connecting gear, the 1 / 4 circular gear is located on the outer surface of the support cylinder, and the connecting gear is engaged with the 1 / 4 circular gear.

[0010] Further, the lens is parallel to the code spraying, and the shooting range is less than 1 / 4 circumference of the pipe material and greater than the code spraying range.

[0011] Further, the support cylinder is fixed on the fixed support by nesting.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1) According to the signal transmitted by the shooting mechanism, the clamping adjustment mechanism extends the clamping cylinder to tightly hold the pipe material, and the rotating mechanism rotates to the required angle, thereby driving the pipe material to rotate by the same angle, so that there is no co-extrusion strip in the code spraying range, and the code spraying on the pipe co-extrusion strip is avoided.

[0014] 2) The device structure is reasonable in design, automatically adjusted, and real-time adjusted, so that the product is not scrapped due to untimely adjustment, and the qualified rate of the product is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure schematic view of the utility model device.

[0016] Figure 2 It is a side view of the utility model.

[0017] In the diagram: 1. Shooting mechanism; 2. 1 / 4 circular gear; 3. Clamping cylinder; 4. Turbine; 5. Servo motor; 6. Fixed bracket; 7. Inkjet printing position; 8. Support cylinder; 9. Arc-shaped clamping block; 10. Connecting gear. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the scope described herein.

[0019] Please refer to Figures 1-2 A device for automatic alignment of inkjet printing on pipes includes a pipe clamping adjustment mechanism and a shooting mechanism 1. The shooting mechanism 1 is provided along the pipe extrusion direction for determining the position of the co-extrusion strip on the pipe. The pipe clamping adjustment mechanism is provided behind the shooting mechanism 1. The shooting mechanism 1 includes a lens for real-time shooting and a signal processing device. The signal processing device is electrically connected to the lens. The lens is parallel to the inkjet printing and its shooting range is no greater than 1 / 4 of the circumference of the pipe and greater than the inkjet printing range. The lens shoots in real time and determines whether there is a co-extrusion strip within the shooting range.

[0020] The pipe clamping adjustment structure is connected to the signal processing device via a signal. The pipe clamping adjustment mechanism is equipped with a 1 / 4 circular gear 2, and a rotating mechanism for its rotation is provided on the side of the pipe clamping adjustment mechanism. The rotating mechanism cooperates with the 1 / 4 circular gear 2.

[0021] If a co-extrusion strip is present within the shooting range, the position of the co-extrusion strip is determined, and the adjustment angle is calculated based on the position of the co-extrusion strip and a signal is transmitted to the clamping adjustment device.

[0022] The pipe clamping adjustment mechanism includes a support cylinder 8. A set of clamping cylinders 3 are evenly arranged on the outer surface of the support cylinder 8 along its circumferential direction. Each clamping cylinder 3 has an arc-shaped clamping block 9 at the end that passes through the support cylinder.

[0023] In this embodiment, there are 4 arc-shaped clamping blocks 9, which clamp the pipe tightly.

[0024] Please refer to Figure 2 The rotating mechanism includes a servo motor 5, and the output end of the servo motor 5 is provided with a turbine 4. The turbine 4 is meshed with a gear 10. A quarter-circular gear 2 is located on the outer surface of the support cylinder 8, and the connecting gear 10 meshes with the quarter-circular gear 2.

[0025] Transmission process:

[0026] Start the servo motor 5, which drives the turbine 4 to rotate. The turbine 4 drives the connecting gear 10 to rotate, which in turn drives the 1 / 4 circular gear 2 to rotate. The 1 / 4 circular gear 2 drives the support cylinder 8 to rotate, which in turn drives the pipe to rotate.

[0027] In this embodiment, a fixed bracket 6 is included, and a support cylinder 8 is fixed to the fixed bracket 6 by nesting.

[0028] The specific process of automatic alignment for pipe marking is as follows:

[0029] Based on the signal transmitted by the shooting mechanism, the clamping adjustment device extends the clamping cylinder 3 to grip the pipe, starts the servo motor 5, and the motor 5 drives the turbine 4 to rotate. The turbine 4 drives the connecting gear 10 to rotate, the connecting gear 10 drives the 1 / 4 circular gear 2 to rotate, and the 1 / 4 circular gear 2 drives the support cylinder 8 to rotate. This causes the pipe to rotate by the same angle, after which the clamping cylinder 3 retracts, the rotating mechanism resets, and it waits for the next signal. This ensures that there are no co-extrusion strips within the inkjet printing area, thus preventing inkjet printing on the co-extrusion strips of the pipe.

Claims

1. A device for automatic alignment of inkjet printing on pipes, characterized in that... It includes a pipe clamping adjustment mechanism and a shooting mechanism (1). The shooting mechanism (1) is provided along the pipe extrusion direction for determining the position of the pipe co-extrusion strip. The shooting mechanism (1) is provided behind the shooting mechanism (1). The shooting mechanism (1) includes a lens and a signal processing device. The signal processing device is electrically connected to the lens. The pipe clamping adjustment mechanism is connected to the signal processing device via a signal. The pipe clamping adjustment mechanism is provided with a 1 / 4 circular gear (2). A rotating mechanism for rotating the pipe clamping adjustment mechanism is provided on one side of the pipe clamping adjustment mechanism. The rotating mechanism is engaged with the 1 / 4 circular gear (2).

2. The device for automatic alignment of inkjet printing on pipes according to claim 1, characterized in that... The pipe clamping adjustment mechanism includes a support cylinder (8), and a set of clamping cylinders (3) are evenly arranged on the outer surface of the support cylinder (8) along its circumferential direction. Each clamping cylinder (3) has an arc-shaped clamping block (9) at the end of the support cylinder.

3. The device for automatic alignment of inkjet printing on pipes according to claim 2, characterized in that... The rotating mechanism includes a servo motor (5) and a connecting gear (10). The output end of the servo motor (5) is provided with a turbine (4). The turbine (4) is meshed with the gear (10). The 1 / 4 circular gear (2) is located on the outer surface of the support cylinder (8). The connecting gear (10) meshes with the 1 / 4 circular gear (2).

4. The device for automatic alignment of inkjet printing on pipes according to claim 1, characterized in that... The lens is parallel to the inkjet printing, and its shooting range is ≤1 / 4 of the circumference of the pipe and greater than the inkjet printing range.

5. The device for automatic alignment of inkjet printing on pipes according to claim 2, characterized in that... Includes a fixed bracket (6), and the support cylinder (8) is fixed to the fixed bracket (6) by nesting.

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