Code spraying and lettering equipment for pipes

Abstract

The utility model provides a device for pipe code spraying and lettering, which comprises a base plate, a first limiting mechanism, a second limiting mechanism and a printing mechanism, the first limiting mechanism comprises an upper roller assembly and two lower roller assemblies, the two lower roller assemblies are oppositely arranged on the base plate, the upper roller assembly is arranged between the two lower roller assemblies, and the printing mechanism is arranged between the upper roller assembly and the lower roller assembly. The second limiting structure comprises an adjusting assembly and two sets of pressing wheel assemblies, the two sets of pressing wheel assemblies are arranged on the adjusting assembly and oppositely arranged in the direction perpendicular to the connecting line of the two lower rolling wheel assemblies, and the two sets of pressing wheel assemblies are arranged on the adjusting assembly and oppositely arranged in the direction perpendicular to the connecting line of the two lower rolling wheel assemblies. The adjusting assembly is used for adjusting the distance between the two sets of pressing wheel assemblies, the printing mechanism is used for printing the part, located between the two sets of pressing wheel assemblies, of the pipe, in the scheme, through cooperation of the first limiting mechanism and the second limiting mechanism, multi-directional limiting of the pipe is achieved, and the stability of the pipe in the code spraying and lettering process is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipe printing, and further relates to a device for pipe code spraying and printing. BACKGROUND

[0002] Pipe is a very common part, and is commonly used for bearing or as a strength structure. It is widely used in various fields such as daily necessities, product packaging or medical consumables, and is loved by people.

[0003] In production, the pipe needs to go through cutting and packaging processes after being extruded by an extruder, and the processing of the pneumatic pipe is completed. After the pipe is formed, it is usually necessary to print the text of the pipe information on the pipe, such as pipe name, pipe model, pipe batch, and manufacturer, etc. The original pipe printing is to use a printing roller to dip ink, and then make the printing roller rotate relative to the pipe, so that the ink pattern on the printing roller is printed on the pipe. However, basically it is a manual process, which consumes a lot of manpower.

[0004] Therefore, people have proposed a device capable of automatically spraying and printing code on the pipe. In use, the pipe needs to move and pass through the nozzle. However, the pipe will shake a lot during the movement, which will greatly reduce the effect of code spraying and printing.

[0005] Therefore, the present application is committed to providing a device for pipe code spraying and printing to solve the above technical problems. INVENTION CONTENTS

[0006] In view of the above technical problems, the purpose of the present application is to provide a device for pipe code spraying and printing, which aims to realize the limiting of the horizontal direction and the vertical direction of the pipe by the cooperation of the first limiting mechanism and the second limiting mechanism, to ensure the stability of the pipe during the code spraying and printing of the printing mechanism, and to improve the printing quality of the pipe.

[0007] In order to achieve the above purpose, the present application provides a device for pipe code spraying and printing, comprising:

[0008] a base plate;

[0009] a first limiting mechanism, the first limiting mechanism comprising an upper roller assembly and two lower roller assemblies, the two lower roller assemblies being oppositely arranged on the base plate, the upper roller assembly being arranged between the two lower roller assemblies and being located above the lower roller assemblies, the distance between the upper roller assembly and the lower roller assemblies being adjustably arranged to movably clamp the pipe between the upper roller assembly and the two lower roller assemblies;

[0010] A second limiting mechanism, the second limiting mechanism comprising an adjusting assembly and two sets of pressing roller assemblies, the two sets of pressing roller assemblies being oppositely arranged on the adjusting assembly along a direction perpendicular to a connecting line of the two lower roller assemblies, the adjusting assembly being arranged on the base plate and being used to adjust a distance between the two sets of pressing roller assemblies so as to movably clamp the pipe between the two sets of pressing roller assemblies;

[0011] A printing mechanism, the printing mechanism being used to print on a portion of the pipe between the two sets of pressing roller assemblies.

[0012] In some embodiments, each set of the pressing roller assemblies comprises at least two pressing rollers, and the at least two pressing rollers of each set of the pressing roller assemblies are oppositely arranged along the connecting line of the two lower roller assemblies.

[0013] In some embodiments, a third limiting mechanism is further arranged on the base plate, the third limiting mechanism comprising a telescopic assembly and at least one rotating roller, the at least one rotating roller being rotatably arranged at one end of the telescopic assembly and being oppositely arranged with the pipe;

[0014] The telescopic assembly is used to drive the rotating roller to move up and down, and the rotating roller is provided with an inner groove arranged along the rotating roller so as to allow the pipe to move relative to the rotating roller through the inner groove.

[0015] In some embodiments, the printing mechanism comprises:

[0016] A transferring assembly, the transferring assembly being arranged above the first limiting mechanism and the second limiting mechanism;

[0017] A sliding block, the sliding block being arranged on the transferring assembly, and the transferring assembly being used to drive the sliding block to move relative to the pipe;

[0018] A printing head, the printing head being arranged on the sliding block.

[0019] In some embodiments, the upper roller assembly and the lower roller assembly each comprise:

[0020] A support frame, the support frame being vertically arranged on the base plate;

[0021] A fixed shaft, the fixed shaft being vertically arranged on the support frame and being adapted to move up and down relative to the support frame;

[0022] A roller, the roller being rotatably sleeved on an outer side of the fixed shaft;

[0023] A first locking member, the first locking member being adapted to fix the fixed shaft on the support frame.

[0024] In some embodiments, the third limiting mechanism further comprises a second locking member and a connecting frame for connecting the telescopic assembly and the rotating wheel;

[0025] The connecting frame has a first end and a second end arranged oppositely, at least one rotating wheel is rotatably arranged on the second end, one end of the telescopic assembly is provided with a through hole matched with the first end, and the first end is arranged on the telescopic assembly through the through hole and is adapted to move along a direction perpendicular to a connecting line of the two lower roller assemblies;

[0026] The second locking member is used for fixing the connecting frame on the telescopic assembly.

[0027] In some embodiments, the adjusting assembly comprises a first threaded rod, a guide rod, a sliding seat and two fixing seats arranged oppositely along a direction perpendicular to a connecting line of the two lower roller assemblies, and two guide rods are arranged in parallel and connected with the two fixing seats respectively.

[0028] The first threaded rod is rotatably arranged between the two guide rods, two sliding seats are arranged outside the first threaded rod and the guide rods and are threadedly connected with the first threaded rod, and the pressure rollers of each pressure roller assembly are arranged on the sliding seat along an extension direction of the sliding seat.

[0029] The rotation of the first threaded rod is used to drive the relative movement of the two sliding seats.

[0030] In some embodiments, the fixing seat is further provided with a third locking member adapted to be clamped with the first threaded rod to fix the first threaded rod on the fixing seat.

[0031] In some embodiments, the first threaded rod comprises a first rod member and a second rod member arranged at one end of the first rod member, and the thread direction of the first rod member is opposite to that of the second rod member.

[0032] In some embodiments, the adjusting assembly is further provided with an ink receiving box assembly, and the two pressure roller assemblies are arranged below the upper roller assembly and between the two lower roller assemblies.

[0033] The printing mechanism is used for printing the part of the pipe above the ink receiving box assembly.

[0034] Compared with the prior art, the device for pipe code printing provided by the present application has the following beneficial effects:

[0035] 1. The device for pipe code printing provided by the utility model, when in use, the printed pipe is arranged between the upper roller assembly and the two lower roller assemblies, and the distance between the upper roller assembly and the lower roller assembly is adjusted to limit the pipe in the vertical direction, reduce the vertical shaking of the pipe during printing, and similarly, the distance between the two sets of pressure roller assemblies is adjusted by the adjusting assembly to limit the pipe in the horizontal direction, reduce the horizontal shaking of the pipe during printing, and the first limiting mechanism and the second limiting mechanism cooperate to ensure the stability of the pipe during printing, thereby ensuring the printing effect of the printing mechanism.

[0036] 2. The device for pipe code printing provided by the utility model further comprises a third limiting mechanism arranged on the base plate, the third limiting mechanism is provided with a rotating wheel, the rotating wheel is provided with an inner groove arranged along the circumference of the rotating wheel, and when the pipe moves, the pipe is located in the inner groove and moves relative to the rotating wheel; in this process, the rotating wheel can further limit the pipe, thereby further improving the stability of the pipe.

[0037] 3. The device for pipe code printing provided by the utility model comprises at least one rotating wheel on the third limiting mechanism, and the rotating wheel can be arranged as a plurality of rotating wheels; the plurality of rotating wheels are different in specification, so that the rotating wheel can be suitable for limiting pipes of different specifications, thereby further improving the versatility of the device.

[0038] 4. The device for pipe code printing provided by the utility model is provided with an ink receiving box assembly on the adjusting mechanism, which is mainly used for receiving the excess ink sprayed by the printing mechanism, thereby preventing the pipe from being contaminated. BRIEF DESCRIPTION OF DRAWINGS

[0039] The above-mentioned characteristics, technical features, advantages and implementation modes of the present application will be further described in the following preferred embodiments in a clear and easy-to-understand manner in combination with the drawings.

[0040] Figure 1 is a structural schematic view of the device for pipe code printing provided by the utility model;

[0041] Figure 2 is a structural schematic view of the third limiting mechanism provided by the utility model;

[0042] Figure 3 is a side view of the third limiting mechanism provided by the utility model;

[0043] Figure 4 is a structural schematic view of the second limiting mechanism provided by the utility model;

[0044] Figure 5It is the structural schematic view of the first limiting mechanism provided by the utility model.

[0045] Explanation of reference numerals: upper roller assembly 1, lower roller assembly 2, support frame 21, fixed shaft 22, roller 23, first locking piece 24, second limiting mechanism 3, adjusting assembly 31, first threaded rod 311, guide rod 312, sliding seat 313, fixed seat 314, third locking piece 315, pressure roller assembly 32, pressure roller 321, third limiting mechanism 4, telescopic assembly 41, second hand wheel 411, square sleeve 412, second threaded rod 413, moving block 414, second locking piece 415, rotating wheel 42, connecting frame 43, printing mechanism 5, printing head 51, sliding block 52, transfer assembly 53, ink receiving box assembly 6, base plate 7. DETAILED DESCRIPTION

[0046] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the specific embodiments of the present application will be described below with reference to the drawings. Obviously, the drawings in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor, and other embodiments can also be obtained.

[0047] In order to make the drawing simple, only the parts related to the application are shown in each drawing, and they do not represent the actual structure of the product. In addition, in order to make the drawing simple and easy to understand, in some drawings, only one of the parts with the same structure or function is shown, or only one of them is marked. In this paper, "one" not only means "only one", but also means "more than one".

[0048] It should be further understood that the term "and / or" used in the specification and claims of the present application means any combination of one or more of the associated listed terms and all possible combinations, and includes these combinations.

[0049] In this paper, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0051] In addition, in the description of the present application, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0052] In one embodiment, an apparatus for printing code on pipe is described, which realizes vertical and horizontal positioning of the printed pipe by setting first and second limiting mechanisms 3, thereby reducing the shaking of the pipe during printing, and further ensuring the printing effect of the printing mechanism 6 on the pipe.

[0053] Specifically, referring to the drawings Figures 1 to 5 An apparatus for printing code on pipe includes a base plate 7, a first limiting mechanism, a second limiting mechanism 3 and a printing mechanism 6, wherein the first limiting mechanism includes an upper roller assembly 1 and two lower roller assemblies 2, and the two lower roller assemblies 2 are oppositely arranged on the base plate 7. Correspondingly, the upper roller assembly 1 is arranged between the two lower roller assemblies 2 and above the lower roller assemblies 2. When printing code on the pipe, the two lower roller assemblies 2 are used to carry the pipe, and correspondingly, in order to reduce the shaking of the pipe in the vertical direction during movement, the distance between the upper roller assembly 1 and the lower roller assembly 2 is set to be adjustable, and by adjusting the distance between the upper roller assembly 1 and the lower roller assembly 2, the pipe is clamped between the upper roller assembly 1 and the two lower roller assemblies 2, and the pipe can move relative to the upper roller assembly 1 and the lower roller assembly 2, i.e. the pipe can move along the connecting direction of the two lower roller assemblies 2. Therefore, the first limiting mechanism realizes the vertical positioning of the pipe, and reduces the shaking of the pipe in the vertical direction during movement.

[0054] Further, the second limiting mechanism 3 comprises an adjusting assembly 31 and two sets of pressing roller assemblies 32, which are oppositely arranged on the adjusting assembly 31 and are oppositely arranged along the extending direction (moving direction) of the pipe, i.e., along the direction perpendicular to the connecting line of the two lower roller assemblies 2. The adjusting assembly 31 is used for adjusting the distance between the two sets of pressing roller assemblies 32, so as to movably clamp the pipe between the two sets of pressing roller assemblies 32. Therefore, the horizontal direction of the pipe is limited by the second limiting mechanism 3, so as to reduce the shaking of the pipe in the horizontal direction during movement. In addition, the printing mechanism 5 is used for printing the part of the pipe between the two sets of pressing roller assemblies 32.

[0055] It can be understood that, in the prior art, although the device for printing the pipe is provided, the pipe needs to move relative to the whole device to adjust the position of the printing mechanism relative to the pipe during use, but the adverse effect of the shaking of the pipe during movement on the printing effect is not considered. In the present embodiment, the vertical direction of the pipe with printing is limited by the first limiting mechanism, and the horizontal direction of the pipe with printing is limited by the second limiting mechanism 3, so that the vertical position and the horizontal position of the pipe are completely limited, the shaking of the pipe during high-speed movement can be effectively avoided, the quality of the code printing can be effectively improved, and the waste rate of the pipe product can be reduced.

[0056] In addition, it should be noted that the number of the upper roller assembly 1 and the lower roller assembly 2 is not limited to the number in the above embodiment, and other numbers can also be provided, as long as the vertical direction of the pipe is limited. In addition, the two sets of pressing roller assemblies 32 are oppositely arranged along the direction perpendicular to the connecting line of the two lower roller assemblies 2, and the two sets of pressing roller assemblies 32 can be arranged between the two sets of lower roller assemblies 2 or on the two sides of the two sets of lower roller assemblies 2. Here, no detailed description is given, and all are within the protection scope of the present application.

[0057] In one embodiment, the present embodiment further describes the pressing roller assembly 32. Each set of pressing roller assembly 32 comprises at least two pressing rollers, and the at least two pressing rollers of each set of pressing roller assembly 32 are oppositely arranged on the adjusting assembly 31 along the extending direction of the pipe, i.e., along the connecting line direction of the two lower roller assemblies 2.

[0058] It can be understood that each set of pressing roller assembly 32 comprises at least two pressing rollers 321, so that the pipe is limited in the horizontal direction by the at least two pressing rollers 321, and the limiting effect of the second limiting mechanism 3 on the pipe in the horizontal direction is further improved. Generally, the pressing roller 321 comprises a pressing roller body and a rotating shaft, the rotating shaft is fixedly arranged on the adjusting assembly 31, and the pressing roller body is rotatably sleeved on the outside of the rotating shaft, so that the pipe can move relative to the device by rotating the pressing roller body, so as to improve the efficiency of code printing.

[0059] Further, referring to the drawings attached in the description Figure 1 The upper roller assembly 1 and the lower roller assembly 2 are further described in the embodiment. The upper roller assembly 1 and the lower roller assembly 2 each include a support frame 21, a fixed shaft 22, a roller 23 and a first locking member 24. The support frame 21 is vertically arranged on the base plate 6. One end of the fixed shaft 22 is movably arranged on the support frame 21, so that the fixed shaft 22 is vertically arranged on the support frame 21. Correspondingly, the roller 23 is rotatably sleeved on the other end of the fixed shaft 22.

[0060] In addition, in order to fix the fixed shaft 22 to a proper height on the support frame 21, the first locking member 24 is in clamping cooperation with the fixed shaft 22, so as to fix the fixed shaft 22 on the support frame 21. Generally, a waist hole is arranged on the support frame 21, and one end of the fixed shaft 22 is provided with a stepped portion, so as to movably insert the one end of the fixed shaft 22 into the waist hole. Correspondingly, the first locking member 24 is a nut, and the one end of the fixed shaft 22 is provided with external threads matched with the nut. After the one end of the fixed shaft 22 passes through the waist hole and abuts against the support frame 21 through the stepped portion, the nut is tightened to fix the fixed shaft 22 on the support frame 21.

[0061] By adjusting the distance between the rollers 23 of the upper roller assembly 1 and the lower roller assembly 2, the pipe is clamped between the upper roller assembly 1 and the lower roller assembly 2, and the rollers 23 are moved relative to the equipment.

[0062] Of course, in actual production application, the structure of the first locking member 24 is various, which is not described one by one herein, as long as the fixed shaft 22 can be fixed on the support frame 21, which is within the protection scope of the utility model.

[0063] In one embodiment, referring to the drawings attached in the description Figure 1The second limiting mechanism 3 is further described in the embodiment. The adjusting assembly 31 comprises a first threaded rod 311, guide rods 312, sliding seats 313 and two fixed seats 314. The two fixed seats 314 are oppositely arranged on the base plate 7 and are oppositely arranged along a direction perpendicular to the connecting line of the two lower roller assemblies 2. The guide rods 312 are arranged in parallel between the two fixed seats 314 and are respectively connected to the two fixed seats 314. In addition, the first threaded rod 311 is rotatably arranged between the two guide rods 312 and passes through the two fixed seats 314. Correspondingly, the sliding seats 313 are arranged in two sets, and the two sets of sliding seats 313 are sleeved outside the first threaded rod 311 and the guide rods 312 and are oppositely arranged along a direction perpendicular to the connecting line of the two lower roller assemblies 2. Threaded holes are arranged on the sliding seats 313 and are threadedly connected with the first threaded rod 311. In addition, a set of pressing roller assemblies 32 is arranged on each sliding seat 313, and the pressing rollers 321 of each set of pressing roller assemblies 32 are oppositely arranged along the extension direction of the sliding seat 313.

[0064] In use, the user can adjust the distance between the two sliding seats 313 by rotating the first threaded rod 311, thereby adjusting the distance between the two sets of pressing roller assemblies 32, so as to clamp the pipe between the two sets of pressing roller assemblies 32. In addition, the first threaded rod 311 comprises a first rod and a second rod arranged at one end of the first rod, and the thread directions of the first rod and the second rod are opposite. The two sliding seats 313 are oppositely arranged on the first rod and the second rod, respectively, so that when the first threaded rod 311 is rotated, the two sets of pressing roller assemblies 32 move relatively to adjust the distance between the two sets of pressing roller assemblies 32.

[0065] Further, a third locking member 315 is arranged on the fixed seat 314, and the third locking member 315 is adapted to be clamped with the first threaded rod 311 to fix the first threaded rod 311 on the fixed seat 314 and prevent rotation.

[0066] Specifically, the locking assembly comprises a mounting frame, an adjusting handle, a first pressing plate and a second pressing plate. The mounting frame is arranged on the base plate 7 and located on the side away from the other fixed seat 314. One end of the first pressing plate is fixedly connected to the mounting frame on the side close to the fixed seat 314, and one end of the second pressing plate is also fixedly connected to the mounting frame on the side close to the fixed seat 314. The first pressing plate and the second pressing plate are arranged vertically on the mounting frame. The first pressing plate is located above the second pressing plate and arranged separately from the second pressing plate. The lower surface of the first pressing plate is provided with a first clamping groove, the upper surface of the second pressing plate is provided with a second clamping groove, and the end of the first threaded rod 311 is rotatably arranged between the first clamping groove and the second clamping groove. The surface of the adjusting handle is provided with external threads, and the bottom of the second pressing plate is provided with a nut adapted to be screwed with the adjusting handle. The adjusting handle is arranged through the first pressing plate and the second pressing plate and is fixedly connected with the nut, so as to realize the extrusion fixing of the first threaded rod 311.

[0067] In one embodiment, referring to the drawings Figure 1 The present embodiment further illustrates a device for printing code on pipe.

[0068] The printing head 51 is an accessory of the printing mechanism 5 and is connected to the transfer assembly 53. The position of the printing head 51 can be adjusted manually, and the code can be printed on the center of the pipe with different outer diameters, meeting the requirements of customers.

[0069] Specifically, the transfer assembly 53 comprises a third threaded rod, a sliding rail and two support seats arranged oppositely at both ends of the sliding rail. The sliding rail is arranged in the direction of the pipe along the direction perpendicular to the connecting line of the two lower roller assemblies 2. The third threaded rod is rotatably arranged on the two support seats, and the sliding block 52 is movably arranged on the sliding rail and is threadedly connected with the third threaded rod to realize screw rod transmission connection. The sliding block 52 is moved relative to the sliding rail by rotating the third threaded rod.

[0070] Of course, in actual production application, the transfer assembly 53 can also be driven by a driving member to move the printing head 51. At this time, the transfer assembly comprises a linear motor, a mounting seat arranged above the pipe, and a printing head 51 movably arranged on the mounting seat. The linear motor is arranged on the mounting seat, and the output end of the linear motor is in transmission connection with the printing head 51, thereby moving the printing head 51.

[0071] Further, the adjusting assembly 31 is further provided with an ink receiving box assembly 6, which is arranged below the pipe. The printing mechanism 5 is used to print the part of the pipe above the ink receiving box assembly 6, and the excess ink sprayed by the printing mechanism 5 is received by the ink receiving box assembly 6 to prevent the pipe from being contaminated. The ink receiving box assembly 6 comprises a support plate and an ink receiving box. The support plate is arranged on the upper end surface of the two fixed seats 314, and the ink receiving box is arranged on the side of the support plate away from the fixed seats 314.

[0072] In one embodiment, referring to the description accompanying Figures 1 to 3 The embodiment further illustrates a device for printing codes on pipes. The device for printing codes on pipes further comprises a third limiting mechanism 4 arranged on the base plate 7. The third limiting mechanism 4 can further limit the pipe and further improve the stability of the pipe.

[0073] Specifically, the third limiting mechanism 4 comprises a telescopic assembly 41 and at least one rotating wheel 42. The at least one rotating wheel 42 is rotatably arranged on one end of the telescopic assembly 41 and is arranged opposite to the pipe. The telescopic assembly 41 is used to drive the rotating wheel 42 to move up and down. In addition, the rotating wheel 42 is provided with an inner groove arranged along the rotating wheel, so that the pipe can be movably arranged in the inner groove. When the pipe moves, the rotating wheel 42 is arranged above the pipe, so that the pipe is arranged in the inner groove and moves relative to the rotating wheel 42. At this time, the rotating wheel 42 further limits the pipe, further reduces the shaking of the pipe during movement, and further ensures the printing quality of the pipe.

[0074] Further, the third limiting mechanism 4 further comprises a second locking member 415 and a connecting frame 43. The connecting frame 43 is used to connect the telescopic assembly 41 and the rotating wheel 42. The connecting frame 43 has a first end and a second end arranged opposite to each other. The at least one rotating wheel 42 is rotatably arranged on the second end. One end of the telescopic assembly 41 is provided with a through hole matched with the first end. The first end is arranged on the telescopic assembly 41 through the through hole and is adapted to move relative to the pipe in a direction perpendicular to the connecting line direction of the two lower roller assemblies 2.

[0075] It can be understood that, in order to limit pipes of different specifications, a plurality of rotating wheels 42 are arranged on the second end of the connecting frame 43. The user can select and use a rotating wheel 42 of a suitable specification according to the outer diameter of the pipe, that is, by moving the first end, so that the suitable rotating wheel 42 is arranged relative to the pipe. After the rotating wheel 42 is moved to the suitable position, the first end is fixedly arranged by the second locking member 415, so as to ensure that the rotating wheel 42 is stably matched with the pipe.

[0076] Further, the telescopic assembly 41 comprises a second hand wheel 411, a square sleeve 412, a second threaded rod 413 and a moving block 414. The moving block 414 is matched with the square sleeve 412, so that the moving block 414 is movably arranged in the square sleeve 412, and the connecting frame 43 is movably arranged at the lower end surface of the moving block 414. Threaded holes are arranged at the upper end surface of the moving block 414 and the upper end surface of the square sleeve 412, and the second threaded rod 413 is threadedly connected with the square sleeve 412 through the two threaded holes. The second hand wheel 411 is arranged at the end of the second threaded rod 413 away from the moving block 414, and in use, the moving block 414 is moved up and down by rotating the second hand wheel 411, so as to drive the rotating wheel 42 to move up and down.

[0077] It should be pointed out that there are many ways to drive the rotating wheel 42 to move up and down by the telescopic assembly 41, as long as the purpose of further limiting the pipe in the horizontal direction is achieved, which will not be described one by one, and all are within the protection scope of the present application. In addition, a threaded hole perpendicular to the through hole is arranged on the moving block 414, the second locking member 415 is arranged as a bolt matched with the threaded hole, and the connecting frame is fixed on the telescopic assembly 41 by rotating the bolt to make the bolt contact and press the first end.

[0078] It should be pointed out that the above embodiments can be freely combined according to needs. The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, several improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A device for printing on pipes, characterized in that: include: substrate; a first limiting mechanism, comprising an upper roller assembly and two lower roller assemblies, wherein the two lower roller assemblies are arranged opposite to each other on the base plate, the upper roller assembly is arranged between the two lower roller assemblies and located above the lower roller assemblies, and the distance between the upper roller assembly and the lower roller assembly is adjustable so as to movably clamp the pipe between the upper roller assembly and the two lower roller assemblies; a second limiting mechanism, comprising an adjusting assembly and two groups of pressing wheel assemblies, wherein the two groups of pressing wheel assemblies are arranged on the adjusting assembly and are arranged relative to each other in a direction perpendicular to a line connecting the two lower roller assemblies, and the adjusting assembly is arranged on the base plate and is used to adjust the distance between the two groups of pressing wheel assemblies so as to movably clamp the pipe between the two groups of pressing wheel assemblies; A printing mechanism is used to print the portion of the tube located between the two groups of pressing wheel assemblies.

2. The device for pipe coding and printing according to claim 1, characterized in that: Each group of the pressing wheel assemblies includes at least two pressing wheels, and the at least two pressing wheels of each group of the pressing wheel assemblies are arranged opposite to each other along the connecting direction of the two lower roller assemblies.

3. The device for pipe coding and printing according to claim 2, characterized in that: The invention also includes a third limiting mechanism provided on the base plate, the third limiting mechanism including a telescopic assembly and at least one rotating wheel, the at least one rotating wheel being rotatably provided at one end of the telescopic assembly and being provided opposite to the tube; The telescopic assembly is used to drive the rotating wheel to move up and down. The rotating wheel is provided with an inner groove arranged along the rotating wheel, so that the pipe can move relative to the rotating wheel through the inner groove.

4. The device for pipe coding and printing according to claim 3, characterized in that: The printing mechanism comprises: a transfer assembly, the transfer assembly being arranged above the first limiting mechanism and the second limiting mechanism; A slider, the slider being disposed on the transfer assembly, and the transfer assembly being used to drive the slider to move relative to the pipe; A printing head is arranged on the slider.

5. The device for inkjet printing on pipes according to claim 1, characterized in that: The upper roller assembly and the lower roller assembly both include: A support frame, the support frame is vertically arranged on the base plate; a fixed shaft, the fixed shaft being vertically disposed on the support frame and being adapted to move up and down relative to the support frame; A roller, the roller being rotatably sleeved on the outer side of the fixed shaft; A first locking member is adapted to fix the fixed shaft on the supporting frame.

6. The device for inkjet printing on pipes according to claim 3, characterized in that: The third limiting mechanism further includes a second locking member and a connecting frame for connecting the telescopic assembly and the rotating wheel; The connecting frame has a first end and a second end that are oppositely disposed, at least one of the rotating wheels is rotatably disposed on the second end, one end of the telescopic assembly is provided with a through hole that matches the first end, the first end is disposed on the telescopic assembly through the through hole, and is adapted to move in a direction perpendicular to a line connecting the two lower roller assemblies; The second locking member is used to fix the connecting frame on the telescopic assembly.

7. The device for pipe coding and printing according to claim 1, characterized in that: The adjustment assembly includes a first threaded rod, a guide rod, a sliding seat and two fixed seats, the two fixed seats are arranged opposite to each other in a direction perpendicular to the connecting line of the two lower roller assemblies, and the two guide rods are provided in two parallel positions and are respectively connected to the two fixed seats; The first threaded rod is rotatably arranged between the two guide rods, and the sliding seats are provided in two pieces. The two sliding seats are sleeved on the outer sides of the first threaded rod and the guide rod and are threadedly connected to the first threaded rod. The pressing wheel of each group of the pressing wheel assembly is arranged on the sliding seat along the extension direction of the sliding seat; The rotation of the first threaded rod is used to drive the two sliding seats to move relative to each other.

8. The device for inkjet printing on pipes according to claim 7, characterized in that: The fixing seat is further provided with a third locking member, and the third locking member is suitable for engaging with the first threaded rod to fix the first threaded rod on the fixing seat.

9. The device for inkjet printing on pipes according to claim 8, characterized in that: The first threaded rod includes a first rod member and a second rod member arranged at one end of the first rod member, and the thread direction of the first rod member is opposite to the thread direction of the second rod member.

10. The device for inkjet printing on pipes according to any one of claims 1 to 9, characterized in that: The adjusting assembly is further provided with an ink cartridge assembly, and the two sets of the pressing wheel assemblies are arranged below the upper roller assembly and between the two lower roller assemblies; The printing mechanism is used to print the portion of the tube located above the ink cartridge assembly.

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