CN212285298U - Core print fine adjustment device of finned tube forming machine and finned tube forming machine with core print fine adjustment device - Google Patents

Abstract

The utility model relates to a fin tube forming machine core print micromatic setting and have its fin tube forming machine, it includes: the template is used for connecting the core rod where the core print is positioned; a drive assembly having a drive end coupled to the die plate, the die plate being driven by the drive assembly to move in position such that the core print is switched between at least two rolling positions. The core head can be switched between at least two rolling positions under the driving of the driving assembly, so that the positions of the core head relative to the blades are at least two, the positions of the core head extruded by the forming blades in the blade set are changed (the positions are positions easy to wear), the wear of the core head is reduced, and the forming quality is stable.

Description

Core print fine adjustment device of finned tube forming machine and finned tube forming machine with core print fine adjustment device

Technical Field

The utility model relates to a finned tube make-up machine core print micromatic setting still relates to a finned tube make-up machine with core print micromatic setting.

Background

The heat transfer pipe based on the enhanced heat transfer design is called a high-efficiency heat exchange pipe and is also called a finned pipe. The batch production of finned tubes conventionally uses rolling means, such as Chinese patent documents "CN 104259282A", "CN 103191979A", "CN 2362619Y" and "CN 108080657A" which relate to production facilities using rolling means.

In the process of continuous mass production of the finned tubes, the biggest problem which troubles production and quality inspection personnel is that: the rapid abrasion of the rolling tool and the rolling die (the blade and the internal thread core print) brings unstable tooth profile of the formed finned tube, thereby reducing the heat exchange efficiency of the whole machine.

In the mandrel system of the conventional fin tube forming machine, the position of the mandrel is fixed relative to the blade during the rolling process, so that the mandrel is rapidly worn.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a finned tube make-up machine core print micromatic setting and have its finned tube make-up machine to reduce the wearing and tearing of core print.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

the utility model provides a fin tube forming machine core print micromatic setting, it includes:

the template is used for connecting the core rod where the core print is positioned;

a driving component, the driving end of the driving component is connected to the template,

the die plate is moved by the drive assembly to a position such that the core print is switched between at least two rolling positions.

Preferably, the drive assembly includes a ball screw set disposed between the drive end and the template.

Preferably, the number of the rolling positions is 2-10.

Preferably, the distance between the adjacent rolling positions is 1-6 mm.

Preferably, when the core print is in the rolling position, the distance from the position on the core print corresponding to the last forming blade in the blade group in the fin tube forming machine to the front end of the core print is more than 1 mm.

Preferably, it further comprises:

the guide assembly comprises at least one linear track, and the template is arranged on the linear track in a sliding mode.

Preferably, the drive assembly comprises one of a servo motor, a servo cylinder and a servo electric cylinder.

Preferably, a band-type brake is arranged in the driving assembly.

Preferably, it further comprises:

the distance between the extrusion end of the locking assembly and the template is adjustable, the minimum value of the distance is zero, and the extrusion end is further provided with a brake module.

Still provide a finned tube make-up machine, its characterized in that, it includes:

the front end of the core rod is provided with a core head;

the template is connected to the rear end of the mandrel;

a driving component, the driving end of the driving component is connected to the template,

the die plate is moved by the drive assembly to a position such that the core print is switched between at least two rolling positions.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the utility model discloses a finned tube forming machine core head micromatic setting and have its finned tube forming machine, owing to add drive assembly, drive assembly passes through the template drive plug and moves and set for the position, the core head reachs rolling position, the core head can switch between two at least rolling positions under the drive assembly drive effect, consequently, the core head has two kinds at least for the position of blade, receive the extruded position of forming blade in the blade group to change (this position is the position of easy wearing and tearing) on the core like this, thereby the wearing and tearing of core head have been reduced, also make the shaping stable in quality.

Drawings

Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is a schematic perspective view of a core print fine adjustment device of a fin tube forming machine according to a preferred embodiment of the present invention;

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is a schematic view of the movement of the core print from the zero position O to the rolling position A;

FIG. 4 is an enlarged view at M of FIG. 3;

FIG. 5 is a schematic view of the movement of the core print from the zero position O to the rolling position B;

FIG. 6 is an enlarged view at M of FIG. 5;

FIG. 7 is a schematic view of the drive assembly driving movement of the mandrel;

FIG. 8 is a schematic illustration of the positional relationship of the core print to the blade set as it is shifted between six rolling positions;

wherein the reference numerals are as follows:

1. a drive assembly;

2. a template;

3. a guide assembly;

4. a linear track;

5. a servo motor;

6. a ball screw group;

7. a locking assembly;

8. a locking cylinder;

9. a core rod;

10. a core print;

11. a blade set;

12. forming a blade;

13. a material receiving guide sleeve;

14. a bearing;

15. a bullet head nut;

16. a support;

17. adjusting screws;

18. and locking the nut.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

In a conventional fin tube forming machine, no fin tube forming machine die head trimming device is provided, and the position of the die head 10 relative to the blade set 11 is fixed. Referring to fig. 3 and 4, the core print 10 cooperates with the blade set 11 to roll internal threads and fins on the inside and outside of the tube blank (the tube blank is sleeved on the periphery of the core print 10).

As shown in fig. 4, the last forming blade 12 in the blade group (in this example, the forming blade 12 has two pieces, and the last forming blade 12 is the forming blade 12 on the left side in fig. 4) is closest to the core print 10 (the outer diameters of the blades in the blade group 11 are sequentially increased, and the outer diameter of the last forming blade 12 is the largest), and accordingly, in the vicinity of Y on the core print 10, an area for rolling an internal thread, that is, only in the vicinity of Y on the core print 10, an internal thread is formed on the inner surface of the tube blank by pressing, and therefore, Y on the core print 10 is extremely easy to wear.

In order to alleviate the rapid wear of the core print 10, the inventors have studied to modify the position of the maximum stress point of the core print 10 (i.e., the Y position in fig. 4) by fine-tuning the core print 10, so as to delay the wear of the core print 10. In fig. 4, the front end of the core print 10 is located at a distance H from the last forming blade 12, and as shown in fig. 6, the position of the core print 10 is finely adjusted (shifted to the right) so that the front end of the core print 10 is located at a distance H-2 (mm) from the last forming blade 12.

Also, the position of the core print 10 can be fine-tuned in sequence, for example, by shifting the core print 10 to different rolling positions to the right in sequence, with a distance of 2mm between adjacent rolling positions. For example, with the core print 10 in the rolling position a in fig. 3 and the core print 10 in the rolling position B in fig. 5, it is also possible to sequentially shift the core print 10 to the right, with the core print 10 sequentially in the rolling position C, D, E, F, as shown in fig. 8.

As shown in FIG. 8, 10 finned tubes are rolled while the core 10 is in the rolling station A, where the position on the core 10 corresponding to the last forming blade (Y in FIG. 4) is subject to wear due to the high pressure and temperature, shifting the position of the core 10 to the rolling station B before rapid wear rolls the next 10 finned tubes, and so on.

That is, in the mass rolling production,

when producing 1 st to 10 th pipes, the core print 10 is at the rolling position A;

when producing the 11 th to 20 th pipes, the core print 10 is at the rolling position B;

when producing 21 st to 30 th tubes, the core print 10 is in the rolling position C;

when producing 31 st to 40 th pipes, the core print 10 is at the rolling position D;

when producing 41 th to 50 th pipes, the core print 10 is at the rolling position E;

in producing the 51 st to 60 th tubes, the core print 10 is in the rolling position F.

Then, the rolling position of the core print 10 is reversed, i.e.:

when producing 61 st to 70 th pipes, the core print 10 is at the rolling position E;

when 71 th to 80 th pipes are produced, the core print 10 is at a rolling position D;

when producing 81 th to 90 th tubes, the core print 10 is in the rolling position C;

when producing 91 th to 100 th tubes, the core print 10 is in the rolling position B;

when producing 101 th to 110 th tubes, the core print 10 is in the rolling position a.

According to the circulation rule, rolling the residual pipe blank. The rapid wear of the core print 10 is delayed, so that the rolling quality is stable.

In this example, the rolling position of the core print 10 is changed for every 10 rolled tubes, but in other embodiments, the rolling position of the core print 10 may be changed for every 20 rolled tubes.

In this example, as shown in FIG. 8, the tip of the core print 10 is located at the rolling positions A to F at distances H (see FIG. 4), H-2, H-4, H-6, H-8, and H-10 from the last forming blade 12 in this order. It can be seen that the distance between adjacent rolling positions is 2mm, and in practice, the distance between adjacent rolling positions can be 1 mm-6 mm (including both ends of 1mm and 6 mm).

In this example, the number of rolling positions is 6, and in practice, 2 to 10 rolling positions are set as ideal conditions according to different tube blank materials and properties.

In this example, when the value of H is 13mm, the distances H, H-2, H-4, H-6, H-8, and H-10 from the tip of the core print 10 to the last molding blade 12 are 13mm, 11mm, 9mm, 7mm, 5mm, and 3mm in this order.

The effective rolling range of 3mm is finally retained in consideration of stability of rolling because unstable forming is easily caused when the distance from the leading end of the core print 10 to the last forming blade 12 is too small. In practice, the effective rolling range may be at least 1mm, i.e. the distance from the front end of the core print 10 to the last forming blade 12 is more than 1 mm.

The utility model discloses a finned tube make-up machine core print micromatic setting is used for realizing the above-mentioned fine setting of core print 10.

As shown in FIG. 1, the fin tube forming machine die head trimming apparatus includes a drive assembly 1, a die plate 2, a guide assembly 3, a locking assembly 7, and a bracket 16 for mounting these several assemblies. The core print fine adjustment device of the fin tube forming machine is used for the fin tube forming machine with a core rod (a rolling machine adopting a three-roller rotary rolling mode, such as the prior application CN108080657A of the applicant). The rear end of a core rod 9 in the finned tube forming machine is arranged on the template 2, and the front end of the core rod 9 is provided with a core print 10. Referring to fig. 2, a bullet nut 15 is further provided at the front end of the mandrel 9 to facilitate the insertion of a tube blank (not shown) into the outer periphery of the mandrel 9.

As shown in fig. 1, the template 2 is slidably arranged in the bracket 16, and the template 2 is better slid by the guide assembly 3. The guide assembly 3 comprises two linear rails 4 arranged in a carriage 16, of which only one linear rail 4 is shown in fig. 1 due to the blocking of the side plates of the carriage 16, see fig. 7. The template 2 is arranged on the linear track 4 in a sliding manner, so that the straightness of the template 2 during sliding is ensured. The provision of two linear rails 4 facilitates a more stable guiding of the formwork 2. The number of the linear rails 4 is not particularly limited, and at least one linear rail may be provided.

The driving assembly 1 comprises a servo motor 5, and a driving end of the servo motor 5 is connected to the template 2 and used for driving the template 2 to slide. A ball screw set 6 is provided between the driving end of the servo motor 5 and the die plate 2 to better realize moving the die plate 2. The ball screw group 6 is a mechanism in the prior art. In this example, the lead screw of the ball screw group 6 is connected to the driving end of the servo motor 5, and the ball bearing of the ball screw group 6 is connected to the die plate 2, so that the rotational motion of the driving end of the servo motor 5 is converted into the linear motion of the die plate 2.

In this example, as shown in fig. 1, the rear end of the mandrel 9 is connected to an adjusting screw 17 and fixed to the die plate 2 by a lock nut 18. The fine adjustment of the position of the mandrel 9 is realized by the driving of the servo motor 5, and the core print 10 is arranged at the front end of the mandrel 9, thereby realizing the fine adjustment of the position of the core print 10.

Although the servo motor 5 is adopted in this embodiment, it is not a limitation of the present invention, and any power member capable of realizing driving action can be used in the present invention, such as a servo cylinder or a servo electric cylinder.

In the rolling process, in order to keep the stability of the core rod and the core head, the device is provided with two sets of locking mechanisms:

the first is that: a band-type brake is arranged in the servo motor 5, and the locking template 2 cannot move back and forth through the ball screw rod group 6;

secondly, the following steps: realize through locking Assembly 7, locking Assembly 7 is including setting up the locking cylinder 8 in template 2 both sides, and the distance between the extrusion end of locking cylinder 8 and template 2 is adjustable setting, and both sides locking cylinder 8 promotes simultaneously to set up and stretches out at the brake module (not shown in the figure) of extrusion end, directly compresses tightly locking template 2.

In this example, as shown in fig. 3, during the rolling process, a mode that the mandrel 9 is driven by the servo motor 5 to extend forward to the material receiving guide sleeve 13 for receiving the material is also provided. The material receiving guide sleeve 13 is connected in a bearing 14.

The specific rolling process is as follows:

the servo motor 5 drives the core rod 9, so that a bullet nut 15 at the front end of the core rod 9 is positioned in the material receiving guide sleeve 13 (at the moment, the core head 10 is in a zero position O), a pipe blank is received, the pipe blank is sleeved on the periphery of the core rod 9 through the core head 10, and the length of the core rod 9 is matched with that of a single pipe blank;

under the drive of the servo motor 5, the core rod 9 and the pipe blank retract together until the core head 10 reaches a rolling position A, namely, the core head retracts by the length of S, and then the blade group 11 is loaded to roll the pipe blank;

after rolling one root canal blank, the core rod 9 advances by the length of S under the driving of the servo motor 5, so that the bullet nut 15 at the front end of the core rod 9 is positioned in the material receiving guide sleeve 13 to receive the next root canal blank;

under the drive of the servo motor 5, the core rod 9 and the pipe blank retract together until the core head 10 reaches the rolling position A, the blade group 11 is loaded, and the pipe blank is rolled;

and so on.

After 10 pipes are rolled, the servo motor 5 drives the core print 10 to move forward to the zero position O to receive the materials, and then the core print 10 is retracted to the rolling position B (see fig. 5, namely the rolling position is changed) to roll the 11 th pipe. 11 th to 20 th tubes are rolled at rolling station B, then 21 th to 30 th tubes are rolled at rolling station C, and so on.

As shown in fig. 7, the core print is at the zero position O on the left side, and the core print is at the rolling position a (see fig. 3) on the right side, and the die plate 2 is moved to the right by a distance L equal to S in fig. 3 under the driving of the servo motor 5, so that the core print is moved from the zero position O to the rolling position a.

The utility model discloses still relate to a finned tube make-up machine, any finned tube make-up machine that adopts aforementioned finned tube make-up machine core print micromatic setting is all within range of protection.

In summary, in the fine tuning device for the core print of the fin tube forming machine of the present embodiment, the driving assembly 1 is added on the basis of the conventional fin tube forming machine, the driving assembly 1 drives the core rod 9 to perform fine tuning of the position during rolling, so that the position of the core print 10 relative to the blade set 11 is finely tuned, more specifically, the core print 10 is circularly switched between the rolling positions A, B, C, D, E, F, the part of the core print 10 corresponding to the last forming blade 12 is the most easily worn part, the easily worn part is changed due to the fine tuning of the rolling position of the core print 10, the wear of the core print 10 is delayed, the service life of the internally threaded core print 10 is effectively prolonged, and the quality of the formed tube is stable. In addition, the fine adjustment realized by the embodiment is carried out in the continuous rolling pipe blank, and the position of the core head is not required to be adjusted by stopping the machine, so that the continuous production can be realized, and the higher production efficiency is ensured.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims (10)

1. The utility model provides a fin tube forming machine core print micromatic setting which characterized in that, it includes:

the die plate (2), the said die plate (2) is used for connecting the core rod (9) where the core print (10) locates;

a driving component (1), wherein the driving end of the driving component (1) is connected to the template (2),

the template (2) is driven by the drive assembly (1) to move to a position such that the core print (10) is switched between at least two rolling positions.

2. The fin tube forming machine die head fine adjustment device according to claim 1, wherein: the driving assembly (1) comprises a ball screw group (6), and the ball screw group (6) is arranged between the driving end and the template (2).

3. The fin tube forming machine die head fine adjustment device according to claim 1, wherein: the number of the rolling positions is 2-10.

4. The fin tube forming machine die head fine adjustment device according to claim 1, wherein: and the distance between adjacent rolling positions is 1-6 mm.

5. The fin tube forming machine die head fine adjustment device according to claim 1, wherein: when the core print (10) is in a rolling position, the distance between the position of the core print (10) corresponding to the last forming blade (12) in the blade group (11) of the fin tube forming machine and the front end of the core print (10) is more than 1 mm.

6. The fin tube forming machine die tip trimming assembly of claim 1, further comprising:

the guide assembly (3), guide assembly (3) include at least one straight line track (4), template (2) slide to be set up on straight line track (4).

7. The fin tube forming machine die head fine adjustment device according to claim 1, wherein: the driving assembly (1) comprises one of a servo motor (5), a servo cylinder and a servo electric cylinder.

8. The fin tube forming machine die head fine adjustment device according to claim 1, wherein: and a band-type brake is arranged in the driving component (1).

9. The fin tube forming machine die tip trimming assembly of claim 1, further comprising:

the device comprises a locking assembly (7), the distance between the extrusion end of the locking assembly (7) and the template (2) is adjustable, the minimum value of the distance is zero, and a brake module is further arranged on the extrusion end.

10. A finned tube forming machine, comprising:

the front end of the mandrel (9) is provided with a mandrel head (10);

the template (2), the said template (2) is connected to the rear end of the said core rod (9);

a driving component (1), wherein the driving end of the driving component (1) is connected to the template (2),

the template (2) is driven by the drive assembly (1) to move to a position such that the core print (10) is switched between at least two rolling positions.

Images