Spacing-adjustable double-row pipe expander

Abstract

The utility model relates to the technical field of pipe expanding equipment, in particular to a distance-adjustable double-row pipe expander which comprises a base, a pipe expanding module is arranged at one end of the base and comprises a positioning plate arranged on the outer side of the base, and a fixed pipe expanding assembly and a movable pipe expanding assembly which are distributed in parallel are arranged on the positioning plate. The positioning plate is provided with a through groove used for adjusting the movable pipe expanding assembly and a through hole used for installing the fixed pipe expanding assembly, the movable pipe expanding assembly can slide in the through groove, the fixed pipe expanding assembly is installed in the through hole and keeps still, and therefore the distance and the position relation between the fixed pipe expanding assembly and the movable pipe expanding assembly are adjusted. Therefore, the position of the movable pipe expanding assembly is adjusted along with the change of the inclination direction of the heat dissipation copper pipe so as to ensure that equipment can be normally used, and compared with an existing method for adjusting the position through a disassembly mode, adjustment is more convenient, meanwhile, the requirement for working experience of staff does not exist, the structure is simple, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of tube expanding equipment, in particular to a tube expanding machine with adjustable spacing. Background Art

[0002] The connection between the heat exchange tube and the tube sheet mainly includes several methods such as expansion joint, welding, and combined expansion and welding. The expansion joint method can be divided into several methods such as mechanical expansion, hydraulic expansion, rubber expansion, and explosive expansion. The mechanical expansion method is generally adopted by domestic enterprises, which has high labor intensity and low work efficiency.

[0003] Chinese Patent (Application No.: 2019213941444) discloses a tube expanding machine, including a frame, on which a tube clamping device for clamping the tube to be expanded and a tube expanding device for expanding the end of the tube to be expanded are arranged. It has a simple structure, is convenient for installation and maintenance, has high working stability and high work efficiency.

[0004] However, this kind of tube expanding machine is a double-row tube expanding machine, but it cannot be used for the tube expanding operation of U-shaped copper tubes in both left-inclined and right-inclined states during use (the copper tube wing plates of the radiator are inclined to the left or right). The existing tube expanding machine needs to be disassembled and then the positions of the two rows of tube expanding components are readjusted to match the copper tubes in the corresponding inclined states, which is complicated to operate and requires experienced employees to operate. Summary of the Utility Model

[0005] In order to solve the above problems, the embodiment of the utility model provides a double-row tube expanding machine with adjustable spacing that is convenient to adjust, and can perform tube expanding operations on copper tubes in different installation states after adjustment.

[0006] The embodiment of the utility model specifically adopts the following technical solutions to achieve the above purpose: a double-row tube expanding machine with adjustable spacing, including a base, one end of the base is provided with a tube expanding module, and a driving module for providing power for the tube expanding equipment is arranged inside the base;

[0007] The tube expanding module includes a positioning plate arranged outside the base, on which a fixed tube expanding component and a movable tube expanding component are arranged in parallel. A through groove for adjusting the movable tube expanding component and a through hole for installing the fixed tube expanding component are arranged on the positioning plate.

[0008] As a further improvement of the above technical solution:

[0009] The movable tube expanding component includes a plurality of expanding rods. A copper sleeve for sleeving outside the expanding rods is arranged in the through groove, and an expanding tube clamp sleeve is arranged at the front end of the copper sleeve.

[0010] An adjusting plate for fixing the copper sleeve is arranged in the through groove, a sliding groove corresponding to the position of the adjusting plate is arranged on the side wall of the positioning plate, and a fastening pressing plate is arranged at the opening of the sliding groove.

[0011] A tightening screw is arranged on one side of the positioning plate, an adjusting nut is arranged at one end of the tightening screw, and the other end extends into the through groove and abuts against the side wall of the adjusting plate.

[0012] A clamping plate is arranged between the base and the positioning plate, a guiding groove is arranged on the inner side wall of the clamping plate, and a guiding block matched with the guiding groove is arranged on the side wall of the base.

[0013] The driving module includes an upper driving roller group and a lower driving roller group that respectively provide power for the movable expanding tube assembly and the fixed expanding tube assembly. Transmission rods matched with the upper driving roller group and the lower driving roller group are respectively arranged on the movable expanding tube assembly and the fixed expanding tube assembly. A driving motor for driving the upper driving roller group and the lower driving roller group to rotate is arranged on one side of the base.

[0014] Both the upper driving roller group and the lower driving roller group include two parallel distributed toothed rollers, and grooves matched with the toothed rollers are arranged on the surface of the transmission rod.

[0015] The beneficial effect of the embodiment of the present utility model is as follows: The double-row expanding tube machine with adjustable spacing includes a base. One end of the base is provided with an expanding tube module, and a driving module for providing power for the expanding tube device is arranged in the base. The expanding tube module includes a positioning plate arranged outside the base. A fixed expanding tube assembly and a movable expanding tube assembly distributed in parallel are arranged on the positioning plate. A through groove for adjusting the movable expanding tube assembly and a through hole for installing the fixed expanding tube assembly are arranged on the positioning plate. The movable expanding tube assembly can slide in the through groove, and the fixed expanding tube assembly is installed in the through hole and remains stationary, so as to adjust the spacing and positional relationship between the fixed expanding tube assembly and the movable expanding tube assembly, and further realize adjusting the position of the movable expanding tube assembly with the change of the inclination direction of the heat dissipation copper tube to ensure the normal use of the device. Compared with the existing method of adjusting the position by disassembly, it is more convenient to adjust, and at the same time, there is no requirement for the working experience of employees, and the structure is simple and convenient to operate. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 It is a side view of the present utility model;

[0018] Figure 3 It is a sectional view of the present utility model;

[0019] Figure 4This is a schematic diagram of the installation structure of the positioning plate in the present utility model.

[0020] In the figure: 1, base; 2, positioning plate; 3, fixed expansion tube assembly; 4, movable expansion tube assembly; 5, through slot; 6, through hole; 7, expansion rod; 8, copper sleeve; 9, expansion tube clamping sleeve; 10, adjusting plate; 11, sliding slot; 12, fastening pressure plate; 13, tightening screw; 14, adjusting nut; 15, clamping plate; 16, guiding slot; 17, upper driving roller group; 18, lower driving roller group; 19, transmission rod; 20, driving motor; 21, toothed roller; 22, groove. Specific embodiments

[0021] The following describes the preferred embodiments of the present utility model with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present utility model and are not intended to limit the protection scope of the present utility model.

[0022] As Figures 1-4 shown, the double-row expansion tube machine with adjustable spacing in this embodiment includes a base 1. A expansion tube module is provided at one end of the base 1, and a driving module for providing power to the expansion tube equipment is provided inside the base 1. The expansion tube module includes a positioning plate 2 installed on the outside of the base 1. A fixed expansion tube assembly 3 and a movable expansion tube assembly 4 are installed on the positioning plate 2 in parallel distribution. A through slot 5 for adjusting the movable expansion tube assembly 4 and a through hole 6 for installing the fixed expansion tube assembly 3 are provided on the positioning plate 2. The movable expansion tube assembly 4 can slide in the through slot 5, and the fixed expansion tube assembly 3 is installed in the through hole 6 and remains stationary, so as to adjust the spacing and positional relationship between the fixed expansion tube assembly 3 and the movable expansion tube assembly 4.

[0023] The movable expansion tube assembly 4 includes a plurality of expansion rods 7. A plurality of expansion tubes are all arranged in the through slot 5. A copper sleeve 8 for sleeving on the outside of the expansion rod 7 is provided in the through slot 5. An expansion tube clamping sleeve 9 is provided at the front end of the copper sleeve 8. The through slot 5 can provide space for the translation of the sliding expansion tube assembly 4.

[0024] An adjusting plate 10 for fixing the copper sleeve 8 is provided in the through slot 5. A sliding slot 11 corresponding to the position of the adjusting plate 10 is provided on the side wall of the positioning plate 2. A fastening pressure plate 12 is provided at the opening of the sliding slot 11. The fastening pressure plate 12 can press the adjusting plate 10 to prevent the adjusting plate 10 from being deflected. The four corners of the fastening pressure plate 12 are connected to the positioning plate 2 by bolts.

[0025] A tightening screw 13 is provided on one side of the positioning plate 2. An adjusting nut 14 is provided at one end of the tightening screw 13 located on the positioning plate 2, and the other end extends into the through slot 5 and abuts against the side wall of the adjusting plate 10. After the position of the movable expansion tube assembly 4 is adjusted by sliding the adjusting plate 10, the two sides of the adjusting plate 10 are limited by the tightening screw 13 on one side of the through slot 5 to prevent the adjusting plate 10 from being deflected due to vibration.

[0026] A clamping plate 15 is provided between the base 1 and the positioning plate 2. A guiding groove 16 is provided on the inner side wall of the clamping plate 15, and a guiding block for cooperating with the guiding groove 16 is provided on the side wall of the base 1. The design of the clamping plate 15 can further improve the positioning of the movable expanding tube assembly 4 and enhance the use stability of the movable expanding tube assembly 4 after adjustment.

[0027] The driving module includes an upper driving roller set 17 and a lower driving roller set 18 that respectively provide power for the movable expanding tube assembly 4 and the fixed expanding tube assembly 3. Transmission rods 19 for cooperating with the upper driving roller set 17 and the lower driving roller set 18 are respectively provided on the movable expanding tube assembly 4 and the fixed expanding tube assembly 3. The number of the transmission rods 19 is two. Grooves 22 for meshing with the toothed roller 21 are provided on each transmission rod 19. The design of the grooves 22 can ensure that while the transmission rod 19 meshes with the toothed roller, it can also move horizontally, without affecting the position adjustment of the movable expanding tube assembly 4. The two transmission rods 19 are symmetrically distributed with the midline of the base 1 as the axis of symmetry. A pressing roller is provided between the two transmission rods 19 for limiting the two transmission rods to prevent skew or displacement. A driving motor 20 for driving the upper driving roller set 17 and the lower driving roller set 18 to rotate is provided on one side of the base 1.

[0028] The working principle / assembly process of this solution: When the position of the movable expanding tube assembly 4 needs to be adjusted, first loosen the fastening pressing plate 12, then loosen the top - tightening screws 13 on both sides of the through - slot, move the adjusting plate 10 to the working position consistent with the skew direction of the heat - dissipation copper tube by sliding, then fix the adjusting plate 10, and then press it tightly by using the fastening pressing plate 12.

[0029] It should be noted that in the description of the present utility model, the terms indicating directions or position relationships such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or position relationships shown in the drawings. This is only for the convenience of description, rather than indicating or implying that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0030] In addition, it should also be noted that in the description of the present utility model, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0031] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a series of elements includes not only those elements but also other elements not expressly listed, or elements that are inherent to those processes, articles, or apparatus / devices.

[0032] So far, the technical solution of the present utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easily understood by those skilled in the art that the protection scope of the present utility model is obviously not limited to these specific embodiments. Without departing from the principle of the present utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present utility model.

Claims

1. A double-row tube expander with adjustable spacing, comprising a base (1), characterized in that: A tube expansion module is arranged at one end of the base (1), and a driving module for providing power to the tube expansion device is arranged inside the base (1); the tube expansion module comprises a positioning plate (2) arranged outside the base (1), and a fixed tube expansion assembly (3) and a movable tube expansion assembly (4) are arranged on the positioning plate (2) and are distributed in parallel; a through groove (5) for adjusting the movable tube expansion assembly (4) and a through hole (6) for installing the fixed tube expansion assembly (3) are arranged on the positioning plate (2).

2. The double-row tube expander with adjustable spacing according to claim 1, characterized in that: The movable tube expansion assembly (4) comprises a plurality of expansion rods (7), a copper sleeve (8) for sleeved on the outside of the expansion rods (7) is arranged in the through groove (5), and a tube expansion jacket (9) is arranged at the front end of the copper sleeve (8).

3. The double-row tube expander with adjustable spacing according to claim 2, characterized in that: An adjustment plate (10) for fixing the copper sleeve (8) is arranged in the through groove (5), a slide groove (11) corresponding to the position of the adjustment plate (10) is arranged on the side wall of the positioning plate (2), and a fastening pressure plate (12) is arranged at the opening of the slide groove (11).

4. The double-row tube expander with adjustable spacing according to claim 3, characterized in that: A tightening screw (13) is provided on one side of the positioning plate (2); an adjusting nut (14) is provided at one end of the tightening screw (13) located on the positioning plate (2), and the other end extends into the through slot (5) to abut against the side wall of the adjusting plate (10).

5. The double-row tube expander with adjustable spacing according to claim 1, characterized in that: A clamping plate (15) is arranged between the base (1) and the positioning plate (2), a guide groove (16) is arranged on the inner side wall of the clamping plate (15), and a guide block used in conjunction with the guide groove (16) is arranged on the side wall of the base (1).

6. The double-row tube expander with adjustable spacing according to claim 1, characterized in that: The driving module comprises an upper driving roller group (17) and a lower driving roller group (18) for providing power to the movable tube expansion assembly (4) and the fixed tube expansion assembly (3), respectively; the movable tube expansion assembly (4) and the fixed tube expansion assembly (3) are respectively provided with a transmission rod (19) for use with the upper driving roller group (17) and the lower driving roller group (18); and a driving motor (20) for driving the upper driving roller group (17) and the lower driving roller group (18) to rotate is provided on one side of the base (1).

7. The double-row tube expander with adjustable spacing according to claim 6, characterized in that: The upper driving roller group (17) and the lower driving roller group (18) each include two parallel distributed toothed rollers (21), and the surface of the transmission rod (19) is provided with a groove (22) used in conjunction with the toothed rollers (21).

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