CN115488250A - Heat exchanger tube expander - Google Patents

Abstract

The invention discloses a heat exchanger tube expander, which comprises: the workbench is movably provided with a mounting seat for placing a heat exchanger of the pipe to be expanded; the clamping seat is detachably connected to the workbench and is provided with a groove matched with the shape of the elbow end of the heat exchanger; the pushing mechanism is arranged on the workbench and used for pushing the mounting seat to move towards one side of the clamping seat so that the bent pipe end of the heat exchanger is embedded in the groove; the pipe expanding piece is detachably connected to the workbench, one end of the pipe expanding piece faces to the straight pipe end of the heat exchanger, the pipe expanding piece is connected with a first linear driving mechanism for driving the pipe expanding piece to move linearly in a reciprocating mode, and the pipe expanding piece can be inserted into the straight pipe end of the heat exchanger to be subjected to pipe expanding treatment under the driving of the first linear driving mechanism. The heat exchanger electric tube expander with the structure has the advantages that the clamping seat and the pipe expanding piece are replaced, so that the effect that one device can process heat exchangers of various styles is achieved, and the applicability of the device is improved.

Description

Heat exchanger tube expander

technical field

The invention relates to the technical field of tube expanders, in particular to a tube expander for heat exchangers.

Background technique

At present, in the assembly of heat exchangers, in order to ensure a firm fit between the heat exchange tubes and the cooling fins, and to prevent the heat exchange tubes from becoming loose due to the gap between the two, it is often necessary to expand the heat exchange tubes. Specifically, the tube expansion process is to insert the tube expander into the heat exchange tube, so that the tube expander can expand the diameter of the heat exchange tube, thereby eliminating or reducing the gap between the heat exchange tube and the cooling fins.

However, in the existing tube expander, the same equipment can only expand the same type of heat exchanger. If the style of the heat exchanger is changed, it is necessary to purchase new equipment, which is costly and has low applicability.

Contents of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art. For this reason, the present invention proposes a heat exchanger tube expander, which can be adapted to different styles of heat exchangers by replacing the clamping seat and expander, so that one piece of equipment can process various styles of heat exchangers. The effect of the device improves the applicability of the device.

A heat exchanger tube expander according to an embodiment of the present invention, comprising: a workbench, which is movably provided with a mounting seat for placing a heat exchanger to be expanded; a clamping seat, which is detachably connected to the workbench, The clamping seat is provided with a groove matching the shape of the elbow end of the heat exchanger; a pushing mechanism is provided on the workbench for pushing the mounting seat toward one side of the clamping seat Move so that the elbow end of the heat exchanger fits into the groove; the expander is detachably connected to the workbench, and one end of the expander faces the straight end of the heat exchanger, and the The tube expander is connected with a first linear drive mechanism that drives it to reciprocate and linearly move. Driven by the first linear drive mechanism, the tube expander can be inserted into the straight tube end of the heat exchanger for tube expansion.

The heat exchanger tube expander according to the embodiment of the present invention has at least the following beneficial effects: when in use, the heat exchanger is fixedly placed on the mounting seat, and then the pushing mechanism pushes the mounting seat to move toward the clamping seat, so that The elbow end of the heat exchanger fits into the corresponding groove on the clamping seat to lock the mounting seat. Finally, the first linear drive mechanism drives the expansion tube to insert into the straight tube end of the heat exchanger, thereby adjusting the heat exchanger. Carry out tube expansion. Among them, the clamping seat and the expansion tube are detachable relative to the workbench, so that people can quickly replace the clamping seat and the expansion tube, so as to adapt to the tube expansion treatment of different styles of heat exchangers, and realize that one equipment can process multiple The effect of various styles of heat exchangers improves the applicability of the equipment.

In some embodiments of the present invention, the workbench is provided with a first guide rail extending toward the clamping seat, the first guide rail is movably provided with a first moving seat, and the expander is detachably connected to For the first moving seat, the first linear drive mechanism drives the first moving seat to move along the length direction of the first guide rail.

In some embodiments of the present invention, one of the expander and the first moving seat is provided with a first slot with the notch facing upwards, and the other is provided with a first slot tightly fitted with the first slot. A clamping part, so that the expander can form a plug-in installation with respect to the first moving seat.

In some embodiments of the present invention, the first moving seat includes two opposite installation plates, the first slot is vertically extended and arranged on the installation plates, and the expander includes a clamping plate and an expansion rod connected to the clamping plate, the expansion rod is extended in a direction parallel to the first guide rail, the clamping plate is clamped between the two mounting plates, and the first The clamping parts are respectively arranged on two sides of the clamping board corresponding to the first slot.

In some embodiments of the present invention, the first linear drive mechanism includes a screw rod parallel to the first guide rail, the first moving seat is movably arranged on the screw rod, and the screw rod is connected to There is a rotating motor driving it to rotate. Driven by the rotating motor, the screw rod drives the first moving seat to reciprocate toward the side of the clamping seat.

In some embodiments of the present invention, the workbench is provided with a fixed seat opposite to the first movable seat, and one of the clamping seat and the fixed seat is provided with a second vertically extending The slot, and the other is provided with a second clamping portion tightly fitted with the second slot, so that the clamping seat can form a plug-in installation in a vertical direction relative to the fixing seat.

In some embodiments of the present invention, the pushing mechanism includes a second moving seat movably arranged on the first guide rail, and the second moving seat is connected with a first linear driver driving its reciprocating linear motion, The second moving seat is detachably connected with a crimping sleeve capable of being fitted on the straight pipe end of the heat exchanger, and the crimping sleeve, the expander and the straight pipe end of the heat exchanger are three The axes of the two are collinear.

In some embodiments of the present invention, the workbench is movably provided with a third moving seat located between the clamping seat and the pushing mechanism, and the third moving seat is connected to drive it to move linearly and reciprocatingly. The second linear driving mechanism, the mounting seat is arranged on the third moving seat, driven by the second linear driving mechanism, the mounting seat can move to a position aligned with the clamping seat.

In some embodiments of the present invention, the third moving seat is provided with a second guide rail parallel to the first guide rail, the mounting seat is movably arranged on the second guide rail, and the pushing mechanism Driven, the installation seat moves along the length direction of the second guide rail.

In some embodiments of the present invention, the workbench is provided with a mounting frame, and the mounting frame is movable and provided with a pressing seat above the mounting seat, and the pressing seat is connected to drive it along the vertical direction. Direction reciprocating movement of the second linear drive.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and comprehensible from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is a schematic structural view of an embodiment of a heat exchanger tube expander of the present invention;

Fig. 2 is a schematic structural view of an embodiment of the processed heat exchanger of Fig. 1 embodiment;

Fig. 3 is a schematic structural view of removing the protective cover in the embodiment of Fig. 1;

Fig. 4 is a partially exploded schematic view of the expander and the first moving seat in the embodiment of Fig. 1;

FIG. 5 is a schematic structural view of the clamping seat and the fixing seat in the embodiment of FIG. 1 .

In the figure: workbench 100, bent pipe end 101, straight pipe end 102, protective cover 103, mounting seat 110, third moving seat 120, second guide rail 121, mounting frame 130, pressing seat 140, second linear drive 150 , clamping seat 200, fixed seat 210, second slot 201, lifting part 202, pushing mechanism 300, second moving seat 310, first linear driver 320, crimping sleeve 330, expansion tube 400, the first A slot 401 , a first clamping portion 402 , a clamping plate 403 , an expansion rod 404 , a hook portion 405 , a first guide rail 410 , a first moving seat 420 , a mounting plate 421 , and a screw rod 500 .

detailed description

Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that when referring to orientation descriptions, such as terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal" ", "top", "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating Or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the invention.

In the description of the present invention, several means one or more, and multiple means more than two. Greater than, less than, exceeding, etc. are understood as not including the original number, and above, below, within, etc. are understood as including the original number. If the description of the first and second is only for the purpose of distinguishing the technical features, it cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features relation.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

Referring to Figures 1 to 5, a heat exchanger tube expander includes: a workbench 100, which is movably provided with a mounting seat 110 for placing a heat exchanger to be expanded; a clamping seat 200, which is detachably connected to the working The platform 100 and the clamping seat 200 are provided with grooves matching the shape of the elbow end 101 of the heat exchanger; One side moves so that the elbow end 101 of the heat exchanger fits into the groove; the expansion tube 400 is detachably connected to the workbench 100, and one end of the expansion tube 400 faces the straight tube end 102 of the heat exchanger, and the expansion tube 400 A first linear drive mechanism is connected to drive it to reciprocate linearly. Driven by the first linear drive mechanism, the tube expander 400 can be inserted into the straight tube end 102 of the heat exchanger for tube expansion.

For the heat exchanger tube expander with the above structure, when in use, the heat exchanger is fixedly placed on the mounting seat 110, and then the pushing mechanism 300 pushes the mounting seat 110 to move toward the side of the clamping seat 200, so that the heat exchanger The bent pipe end 101 of the clamping seat 200 is fitted into the corresponding groove, so as to apply force to the mounting seat 110 to lock both sides, and finally the first linear drive mechanism drives the expansion tube 400 to insert the straight pipe end of the heat exchanger 102, so as to perform tube expansion treatment on the heat exchanger. Among them, the clamping seat 200 and the expansion tube 400 are detachable relative to the workbench 100, so that people can quickly replace the clamping seat 200 and the expansion tube 400, so as to adapt to the tube expansion process of different styles of heat exchangers, and then realize a One piece of equipment can process various styles of heat exchangers, which improves the applicability of the equipment.

Referring to Fig. 3 and Fig. 4, in some embodiments of the present invention, the workbench 100 is provided with a first guide rail 410 extending toward the clamping seat 200, the first guide rail 410 is movably provided with a first moving seat 420, and the expansion tube 400 is detachably connected to the first moving base 420 , and the first linear drive mechanism drives the first moving base 420 to move along the length direction of the first guide rail 410 . Specifically, the cooperation between the first guide rail 410 and the first moving seat 420 is beneficial to guide and limit the movement of the expander 400, thereby ensuring that the expander 400 can be accurately positioned at the straight tube end of the heat exchanger. 102 , preventing the tube expansion member 400 from shifting and affecting the tube expansion process of the heat exchanger. It can be understood that, in order to improve the stability of the movement of the first moving base 420 , there are two first guide rails 410 , and the two first guide rails 410 are symmetrically distributed on both sides of the first moving base.

3 and 4, in some embodiments of the present invention, one of the expander 400 and the first moving seat 420 is provided with a first slot 401 with the notch facing upwards, and the other is provided with the first slot 401 tightly fitted with the first clamping part 402 , so that the expander 400 can form a plug-in installation relative to the first moving seat 420 . Specifically, the expander 400 can be installed in a plug-in manner relative to the first moving seat 420, so that people only need to pull the first clamping part 402 upwards from the first slot 401 to quickly disassemble and connect the expander 400. Easy to replace. Wherein, the first slot 401 is set in a square strip shape, and the first clamping portion 402 is adapted to the shape of the first slot 401, so that the two can form a tight fit where the surface is abutted against each other, thereby avoiding the expansion of the tube 400. There is a problem of loosening during use. Of course, it can be understood that the expansion tube 400 and the first moving seat 420 can also be locked with a magnetic attraction structure, and the unlocking can be completed by overcoming the magnetic attraction force between the two, and the disassembly is relatively fast and convenient.

Referring to Fig. 3 and Fig. 4, in some embodiments of the present invention, the first moving seat 420 includes two opposite mounting plates 421, the first slot 401 extends vertically on the mounting plates 421, and the expander 400 It includes a clamping plate 403 and an expansion rod 404 connected to the clamping plate 403. The expansion rod 404 extends along a direction parallel to the first guide rail 410. The clamping plate 403 is clamped between two mounting plates 421. The first clamping The connecting portions 402 are respectively disposed on two sides of the clamping plate 403 corresponding to the first slot 401 . Specifically, the clamping plate 403 is correspondingly inserted into the first slot 401 on the mounting plate 421 through the first clamping portion 402, which is beneficial to clamping the clamping plate 403 on both sides, thus helping to avoid the expansion of the rod 404. Offset occurs during the tube expansion process, thereby ensuring accurate alignment of the movement of the expansion rod 404 . It can be understood that, in order to facilitate people to pull out the expansion tube 400 , a hook portion 405 that is convenient for people to apply force to lift the expansion tube 400 may also be provided on the upper part of the clamping plate 403 .

3 and 4, in some embodiments of the present invention, the first linear drive mechanism includes a screw 500 parallel to the first guide rail 410, the first moving seat 420 is movably arranged on the screw 500, the screw 500 is connected with a rotating motor driving it to rotate. Driven by the rotating motor, the screw mandrel 500 drives the first moving seat 420 to reciprocate toward the clamping seat 200 side. Specifically, the first moving seat 420 is slidingly connected to the screw rod 500 through a ball nut, and the screw rod 500 is connected to the output shaft of the rotating motor, so that driven by the rotating motor, the screw rod 500 rotates to drive the ball nut along its length. Direction movement, and then drive the first moving seat 420 to move. Wherein, the transmission mode of the screw rod 500 is adopted, not only the moving speed of the first moving seat 420 can be regulated, but also the displacement of the first moving seat 420 can be adjusted. Carry out tube expansion processing to improve the stability and movement accuracy of the tube expansion process. Of course, in some embodiments, the first linear drive mechanism can also be a rack and pinion driven by a motor, which will not be described in detail here.

Referring to FIG. 5 , in some embodiments of the present invention, the workbench 100 is provided with a fixed seat 210 opposite to the first movable seat 420 , and one of the clamping seat 200 and the fixed seat 210 is provided with a second vertically extending There are two slots 201 , and the other is provided with a second clamping portion tightly fitted with the second slot 201 , so that the clamping seat 200 can form a plug-in installation in a vertical direction relative to the fixing seat 210 . Specifically, the tight-fit plug-in installation is formed between the clamping seat 200 and the fixing base 210 , which is beneficial to simplify the installation process of the clamping seat 200 and improve the installation efficiency of the clamping seat 200 . Certainly, the clamping seat 200 is provided with a lifting portion 202 that can be passed by human hands, and the lifting portion 202 can provide people with a force application position for lifting the clamping base 200, thereby facilitating people's daily use. It can be understood that the clamping seat 200 and the fixing seat 210 can also be locked with a magnetic attraction structure, and the unlocking only needs to overcome the magnetic attraction force between the two to complete the separation, and the disassembly is relatively fast and convenient.

Referring to FIG. 3 , in some embodiments of the present invention, the pushing mechanism 300 includes a second moving seat 310 movably arranged on the first guide rail 410 , and the second moving seat 310 is connected with a first straight line for driving its reciprocating linear motion. The driver 320, the second moving seat 310 are detachably connected with a crimping sleeve 330 capable of being fitted on the straight pipe end 102 of the heat exchanger, the crimping sleeve 330, the expanding tube 400 and the straight pipe end 102 of the heat exchanger. The axes of the two are collinear. Specifically, the first linear driver 320 drives the crimping sleeve 330 to fit over the straight pipe end 102 of the heat exchanger, which is beneficial to reduce the deformation of the straight pipe end 102 of the heat exchanger during the tube expansion process such as inclination. , thereby improving the quality of the product expansion tube. Wherein, in order to facilitate the replacement of the crimping sleeve 330, the second moving base 310 is provided with a third slot, and a plurality of crimping sleeves 330 are connected to the same plug board, and the plug board is provided with a third slot. The tight-fitting third clamping part forms a plug-in installation with the second moving seat 310 through the plug-in plate, which can also achieve the effect of quickly replacing the crimping sleeve 330, so as to facilitate subsequent crimping sleeves 330 and different styles. used in conjunction with the heat exchanger. It can be understood that the first linear driver 320 can be driven by an air cylinder or a hydraulic cylinder according to actual conditions.

Referring to FIG. 3 , in some embodiments of the present invention, the workbench 100 is movable and provided with a third moving seat 120 located between the clamping seat 200 and the pushing mechanism 300 , and the third moving seat 120 is connected with a drive to drive it to reciprocate in a straight line. For the moving second linear drive mechanism, the mounting seat 110 is disposed on the third moving seat 120 , and driven by the second linear driving mechanism, the mounting seat 110 can move to a position aligned with the clamping seat 200 . Specifically, the workbench 100 is provided with a protective cover 103 that surrounds a square space processed by expanding tubes, and reserves an area where the third mobile seat 120 protrudes from the square space, so that people can install it through the second linear drive mechanism. The seat 110 is moved out of the protective cover 103, so that people can install the heat exchanger at a position where the mounting seat 110 is away from the tube expansion process, thereby improving the safety of operators. It can be understood that, for the second linear drive mechanism, a motor-driven screw mechanism or a motor-driven rack-and-pinion mechanism can be selected according to actual needs.

Referring to FIG. 3 , in some embodiments of the present invention, the third moving base 120 is provided with a second guide rail 121 parallel to the first guide rail 410 , and the mounting base 110 is movably arranged on the second guide rail 121 . Driven, the installation seat 110 moves along the length direction of the second guide rail 121 . Specifically, when the mounting base 110 is moved to a position aligned with the clamping base 200 , the pushing mechanism 300 drives the mounting base 110 to move along the length direction of the second guide rail 121 to move close to the clamping base 200 , so that the movement of the mounting base 110 To guide and limit the effect, thereby avoiding the deviation of the movement of the mounting seat 110 and affecting the subsequent processing.

Referring to Fig. 3, in some embodiments of the present invention, the workbench 100 is erected with a mounting frame 130, and the mounting frame 130 is movably provided with a pressing seat 140 located above the mounting seat 110, and the pressing seat 140 is connected with a drive to drive it along the A second linear driver 150 reciprocating in the vertical direction. Specifically, by moving the pressing seat 140 to abut against the heat exchanger to be processed, a pressing force in the vertical direction is applied to the heat exchanger, thereby preventing the heat exchanger from being dislocated due to force during tube expansion. Limiting effect. It can be understood that the second linear driver 150 can be driven by an air cylinder or a hydraulic cylinder according to actual conditions.

The various technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the various technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the invention is defined by the claims and their equivalents.

Claims (10)

1. A heat exchanger tube expander, characterized in that it comprises: The workbench (100) is movably provided with a mounting seat (110) for placing the heat exchanger of the tube to be expanded; The clamping seat (200) is detachably connected to the workbench (100), and the clamping seat (200) is provided with a groove matching the shape of the elbow end (101) of the heat exchanger; A pushing mechanism (300), provided on the workbench (100), is used to push the installation seat (110) to move toward one side of the clamping seat (200), so that the bend of the heat exchanger The pipe end (101) fits into the groove; An expansion piece (400), detachably connected to the workbench (100), one end of the expansion piece (400) faces the straight pipe end (102) of the heat exchanger, and the expansion piece (400) is connected with a drive A first linear drive mechanism that reciprocates linearly. Driven by the first linear drive mechanism, the tube expander (400) can be inserted into the straight tube end (102) of the heat exchanger for tube expansion processing. 2. The heat exchanger tube expander according to claim 1, characterized in that: The workbench (100) is provided with a first guide rail (410) extending toward the clamping seat (200), the first guide rail (410) is movably provided with a first moving seat (420), the The expander (400) is detachably connected to the first moving seat (420), and the first linear drive mechanism drives the first moving seat (420) to move along the length direction of the first guide rail (410) . 3. The heat exchanger tube expander according to claim 2, characterized in that: One of the expander (400) and the first moving seat (420) is provided with a first slot (401) with the notch facing upwards, and the other is provided with a slot that is closely aligned with the first slot (401). The matched first clamping part (402) enables the expander (400) to form a plug-in installation relative to the first moving seat (420). 4. The heat exchanger tube expander according to claim 3, characterized in that: The first moving base (420) includes two opposite mounting plates (421), the first slot (401) extends vertically on the mounting plate (421), and the expansion tube ( 400) includes a clamping plate (403) and an expansion rod (404) connected to the clamping plate (403), the expansion rod (404) is extended in a direction parallel to the first guide rail (410), The clamping plate (403) is clamped between the two mounting plates (421), and the first clamping parts (402) are respectively provided on the clamping plate (403) corresponding to the first insertion Both sides of the groove (401). 5. The heat exchanger tube expander according to claim 2, characterized in that: The first linear drive mechanism includes a screw rod (500) parallel to the first guide rail (410), the first moving seat (420) is movably arranged on the screw rod (500), and the The screw mandrel (500) is connected with a rotating motor that drives it to rotate. Driven by the rotating motor, the screw mandrel (500) drives the first moving seat (420) toward the clamping seat (200) Side reciprocating movement. 6. The heat exchanger tube expander according to claim 2, characterized in that: The workbench (100) is provided with a fixed seat (210) opposite to the first movable seat (420), and one of the clamping seat (200) and the fixed seat (210) is provided with a vertical The second slot (201) extending in the straight direction, and the other is provided with a second clamping part tightly fitted with the second slot (201), so that the clamping seat (200) can be fixed relative to the The seat (210) forms a plug-in installation along the vertical direction. 7. The heat exchanger tube expander according to claim 2, characterized in that: The pushing mechanism (300) includes a second moving seat (310) which is movably arranged on the first guide rail (410), and the second moving seat (310) is connected with a first straight line driving its reciprocating linear motion. A line driver (320), the second moving seat (310) is detachably connected with a crimping sleeve (330) capable of being sleeved on the straight pipe end (102) of the heat exchanger, and the crimping sleeve ( 330 ), the expander ( 400 ) and the straight pipe end ( 102 ) of the heat exchanger have axes that are collinear. 8. The heat exchanger tube expander according to claim 2, characterized in that: The workbench (100) is movably provided with a third moving seat (120) located between the clamping seat (200) and the pushing mechanism (300), and the third moving seat (120) is connected to There is a second linear drive mechanism for driving its linear reciprocating movement, and the mounting seat (110) is arranged on the third moving seat (120). Driven by the second linear drive mechanism, the mounting seat (110) ) can be moved to a position aligned with the clamping seat (200). 9. The heat exchanger tube expander according to claim 8, characterized in that: The third moving base (120) is provided with a second guide rail (121) parallel to the first guide rail (410), and the mounting base (110) is movably arranged on the second guide rail (121). Driven by the pushing mechanism (300), the installation seat (110) moves along the length direction of the second guide rail (121). 10. The heat exchanger tube expander according to claim 8, characterized in that: The workbench (100) is erected with a mounting frame (130), and the mounting frame (130) is movably provided with a pressing seat (140) above the mounting seat (110), and the pressing seat ( 140) is connected with a second linear drive (150) driving it to reciprocate vertically.

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