CN111672994B

CN111672994B - Clamping mechanism and pipe expander with same

Info

Publication number: CN111672994B
Application number: CN202010642922.8A
Authority: CN
Inventors: 陈义波; 胡康; 李德灵; 鲁鹏; 张秀峰
Original assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Gree Intelligent Equipment Co Ltd
Current assignee: Gree Intelligent Equipment Wuhan Co ltd; Gree Electric Appliances Inc of Zhuhai; Zhuhai Gree Intelligent Equipment Co Ltd
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2022-05-27
Anticipated expiration: 2040-07-06
Also published as: CN111672994A

Abstract

The invention provides a clamping mechanism and a pipe expander with the same, wherein the clamping mechanism is used for clamping a pipe fitting and comprises: the first pressing piece and the second pressing piece can be relatively close to and far away from each other; the clamping piece is positioned between the first pressing piece and the second pressing piece, at least part of the clamping piece is made of flexible materials, and the clamping piece is provided with a clamping hole for accommodating the pipe fitting; wherein, when first piece and the second that compresses tightly is close to relatively, first piece and the second that compresses tightly is extrudeed the holder to make the holder take place to warp, and carry out the centre gripping to the pipe fitting that is located the grip hole. The clamping mechanism solves the problem that the pipe fitting is easily damaged by the clamping mechanism in the prior art.

Description

Clamping mechanism and pipe expander with same

Technical Field

The invention relates to the field of clamps, in particular to a clamping mechanism and a pipe expander with the same.

Background

The clamping operation of the workpiece is often required in the product processing process, so that the processing operation or the transferring operation of the workpiece is convenient.

For example, when the tube expander is used for expanding the heat exchange tube of the heat exchanger, the clamping mechanism is required to clamp and fix the tube, so that the tube is prevented from deforming, and the tube expanding quality is ensured.

The existing pipe fitting clamping mechanism generally adopts a sleeve to drive a plurality of clamping jaws to be close to each other to clamp a pipe fitting, and the pipe fitting is easily scratched or crushed by the clamping mechanism when being clamped by the clamping mechanism, so that the product quality is influenced.

Disclosure of Invention

The invention mainly aims to provide a clamping mechanism and a pipe expander with the same, and aims to solve the problem that a pipe fitting is easily damaged by the clamping mechanism in the prior art.

In order to achieve the above object, according to one aspect of the present invention, there is provided a gripping mechanism for gripping a tubular, the gripping mechanism comprising: the first pressing piece and the second pressing piece can be relatively close to and far away from each other; the clamping piece is positioned between the first pressing piece and the second pressing piece, at least part of the clamping piece is made of flexible materials, and the clamping piece is provided with a clamping hole for accommodating the pipe fitting; wherein, when first piece and the second that compresses tightly is close to relatively, first piece and the second that compresses tightly is extrudeed the holder to make the holder take place to warp, and carry out the centre gripping to the pipe fitting that is located the grip hole.

Furthermore, the first pressing piece is provided with a pipe penetrating hole so that the pipe fitting penetrates into the clamping hole through the pipe penetrating hole; and/or, the second pressing piece is provided with an expansion pipe hole so that the expansion rod penetrates through the expansion pipe hole to the clamping hole to expand the pipe fitting.

Furthermore, the clamping piece is of a cylindrical structure, one surface, close to the second pressing piece, of the first pressing piece and/or one surface, close to the first pressing piece, of the second pressing piece are/is provided with an installation groove, and one part of the clamping piece is installed in the installation groove.

Further, the holder is made of a rubber material; and/or the clamping pieces are multiple and are arranged at intervals.

According to another aspect of the present invention, there is provided a pipe expander, comprising a gripping mechanism for gripping a pipe to be expanded, the gripping mechanism being the gripping mechanism described above.

Further, a first pressing piece of the clamping mechanism is fixedly arranged on a main body frame of the pipe expander; the pipe expander comprises a driving structure, and the driving structure is connected with the second pressing piece so as to drive the second pressing piece to move along the direction close to or far away from the first pressing piece.

Further, first compressing tightly the piece and the second compresses tightly the piece and sets up along first direction interval, and the drive structure includes: the driving plate is connected with the second pressing piece, the driving plate is mounted on a main body frame of the pipe expander through a first sliding fit structure, and the first sliding fit structure extends along a first direction so that the driving plate can be slidably arranged along the first direction relative to the main body frame of the pipe expander; the movable piece is movably arranged along a second direction relative to the main body frame of the pipe expander, the movable piece is matched with the driving plate through a second sliding fit structure, and the second sliding fit structure is arranged in an extending mode along a third direction; the first direction is perpendicular to the second direction, and an included angle between the third direction and the first direction is larger than 0 degree and smaller than 90 degrees.

Furthermore, the first sliding fit structure comprises a first strip-shaped hole and a first sliding piece, wherein the first strip-shaped hole is arranged on the driving plate and extends along a first direction; the first sliding piece is arranged on a main body frame of the pipe expander and can be slidably arranged in the first strip-shaped hole along a first direction; the second sliding fit structure comprises a second strip-shaped hole and a second sliding piece, and the second strip-shaped hole is arranged on the driving plate and extends along a third direction; the second sliding piece is installed on the moving piece and is arranged in the second strip-shaped hole in a sliding mode along the third direction.

Further, drive structure includes motor module and lead screw nut module, and the motor module is installed on the main part frame of electric tube expander, and lead screw nut module includes lead screw and screw, and the lead screw extends the setting along the second direction, and the lead screw is connected with the output shaft of motor module to it is rotatory to drive the lead screw through motor module, and the screw is installed on the moving part, screw and lead screw cooperation.

Furthermore, the pipe fitting is the heat exchange tube of heat exchanger, and the electric tube expander is used for carrying out the expand tube operation to the heat exchange tube of heat exchanger.

The clamping mechanism applying the technical scheme of the invention is used for clamping the pipe fitting and comprises: the first pressing piece and the second pressing piece can be relatively close to and far away from each other; the clamping piece is positioned between the first pressing piece and the second pressing piece, at least part of the clamping piece is made of flexible materials, and the clamping piece is provided with a clamping hole for accommodating the pipe fitting; wherein, when first piece and the second that compresses tightly is close to relatively, first piece and the second that compresses tightly is extrudeed the holder to make the holder take place to warp, and carry out the centre gripping to the pipe fitting that is located the grip hole. Therefore, when the first pressing piece and the second pressing piece are close to each other, the clamping piece is extruded, so that the clamping piece is deformed, the clamping hole is deformed, and the pipe fitting is clamped; when the first and second crimping pieces are moved away from each other, the shape of the clamp is restored, thereby releasing the pipe. By adopting the structure design, the flexible clamping of the pipe fitting is realized, the pipe fitting can be better protected, the pipe fitting is prevented from being scratched or crushed, and the problem that the pipe fitting is easily damaged by a clamping mechanism in the prior art is solved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 shows a schematic view of a partial region of an embodiment of a clamping mechanism according to the invention;

FIG. 2 is a schematic diagram illustrating a first perspective of an embodiment of a pipe expander according to the present invention;

FIG. 3 is a schematic diagram illustrating a second perspective of an embodiment of a pipe expander in accordance with the present invention;

figure 4 shows a schematic cross-sectional view of an embodiment of the pipe expander according to the present invention.

Wherein the figures include the following reference numerals:

11. a drive plate; 12. a first sliding fit structure; 121. a first bar-shaped hole; 122. a first slider; 13. a movable member; 14. a second sliding fit arrangement; 141. a second bar-shaped hole; 142. a second slider; 15. a motor module; 10. a first pressing member; 20. a second pressing member; 201. a tube expansion hole; 30. a clamping member; 301. a clamping hole; 100. a pipe fitting; 200. a heat exchanger.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1, the present invention provides a clamping mechanism for clamping a pipe 100, the clamping mechanism comprising: a first pressing member 10 and a second pressing member 20, the first pressing member 10 and the second pressing member 20 being relatively closely and distantly disposed; a clamp 30, the clamp 30 being located between the first compression member 10 and the second compression member 20, at least part of the clamp 30 being made of a flexible material, the clamp 30 having a clamp hole 301 for receiving the pipe 100; when the first pressing member 10 and the second pressing member 20 are relatively close to each other, the first pressing member 10 and the second pressing member 20 press the clamping member 30, so that the clamping member 30 is deformed, and the pipe 100 located in the clamping hole 301 is clamped.

The clamping mechanism of the present invention is used for clamping a pipe 100, and comprises: a first pressing member 10 and a second pressing member 20, the first pressing member 10 and the second pressing member 20 being relatively closely and distantly disposed; a clamp 30, the clamp 30 being located between the first compression member 10 and the second compression member 20, at least part of the clamp 30 being made of a flexible material, the clamp 30 having a clamp hole 301 for receiving the pipe 100; when the first pressing member 10 and the second pressing member 20 are relatively close to each other, the first pressing member 10 and the second pressing member 20 press the clamping member 30, so that the clamping member 30 is deformed, and the pipe 100 located in the clamping hole 301 is clamped. In this way, when the first pressing member 10 and the second pressing member 20 approach each other, the clamping member 30 is pressed, so that the clamping member 30 is deformed, and the clamping hole 301 is deformed, thereby clamping the pipe fitting 100; when the first and second pressing

members

10 and 20 are moved away from each other, the shape of the clamping member 30 is restored, thereby releasing the pipe 100. By adopting the structure design, the flexible clamping of the pipe fitting is realized, the pipe fitting can be better protected, the pipe fitting is prevented from being scratched or crushed, and the problem that the pipe fitting is easily damaged by a clamping mechanism in the prior art is solved.

In addition, the structure of the clamping mechanism is simpler, the manufacturing cost is lower, the assembly operation is simple, and the use stability is better.

In order to conveniently clamp the pipe fitting 100, the first pressing member 10 is provided with a through hole, so that the pipe fitting 100 is inserted into the clamping hole 301 through the through hole; and/or, in order to facilitate the pipe expanding operation on the pipe fitting 100, an expansion pipe hole 201 is formed in the second pressing member 20, so that the expansion rod is inserted into the clamping hole 301 through the expansion pipe hole 201 to expand the pipe fitting 100.

Specifically, the clamping member 30 is a cylindrical structure, one surface of the first pressing member 10 close to the second pressing member 20 and/or one surface of the second pressing member 20 close to the first pressing member 10 are/is provided with an installation groove, and a part of the clamping member 30 is installed in the installation groove.

In this embodiment, the first pressing member 10 is provided with a mounting groove, the depth of the mounting groove is smaller than the height of the clamping member 30, that is, when the clamping member 30 is mounted in the mounting groove, a part of the clamping member 30 is located in the mounting groove, and another part of the clamping member 30 is located outside the mounting groove, and the part of the clamping member 30 located outside the mounting groove is pressed by the second pressing member 20, so that the clamping member 30 is deformed, thereby clamping the pipe fitting 100.

Preferably, the clamp 30 is made of a rubber material; and/or, the clamping member 30 is provided in plurality, and the plurality of clamping members 30 are arranged at intervals, so that the plurality of pipe fittings 100 can be clamped at the same time.

Referring to fig. 2 to 4, the present invention further provides a pipe expander, which includes a clamping mechanism for clamping a pipe 100 to be expanded, where the clamping mechanism is the above-mentioned clamping mechanism.

Specifically, a first pressing member 10 of the clamping mechanism is fixedly mounted on a main body frame of the pipe expander; the tube expander comprises a drive arrangement coupled to the second pressing member 20 for driving the second pressing member 20 in a direction towards or away from the first pressing member 10.

The first pressing member 10 and the second pressing member 20 are spaced apart in a first direction, and the driving structure includes: the driving plate 11 is connected with the second pressing part 20, the driving plate 11 is mounted on a main body frame of the pipe expander through a first sliding fit structure 12, and the first sliding fit structure 12 is arranged in a manner of extending along a first direction, so that the driving plate 11 is arranged in a manner of sliding along the first direction relative to the main body frame of the pipe expander; the movable piece 13 is movably arranged along the second direction relative to the main body frame of the pipe expander, the movable piece 13 is matched with the driving plate 11 through a second sliding fit structure 14, and the second sliding fit structure 14 is arranged in an extending mode along the third direction; the first direction is perpendicular to the second direction, and an included angle between the third direction and the first direction is larger than 0 degree and smaller than 90 degrees. Like this, can make moving part 13 produce the drive power on the first direction when following the motion of second direction under the guide effect of first sliding fit structure 12 and second sliding fit structure 14 to the drive second compresses tightly a 20 and is close to or keeps away from first compressing tightly a 10, can make the structure of electric tube expander more reasonable like this, can set up driving motor isotructure in the electric tube expander side rather than the top, thereby avoid causing the influence to the expand tube operation, and be favorable to guaranteeing the compactness of electric tube expander structure.

Specifically, the first sliding fit structure 12 includes a first strip-shaped hole 121 and a first sliding member 122, the first strip-shaped hole 121 is disposed on the driving plate 11 and extends along a first direction; the first sliding part 122 is mounted on a main body frame of the pipe expander, and the first sliding part 122 is slidably arranged in the first strip-shaped hole 121 along the first direction; the second sliding fit structure 14 includes a second bar-shaped hole 141 and a second slider 142, the second bar-shaped hole 141 is disposed on the driving plate 11 and extends along the third direction; the second slider 142 is mounted on the movable member 13, and the second slider 142 is slidably disposed in the second elongated hole 141 in the third direction.

In addition, drive structure includes motor module 15 and lead screw nut module, and motor module 15 is installed on the main part frame of electric tube expander, and lead screw nut module includes lead screw and screw, and the lead screw extends the setting along the second direction, and the lead screw is connected with motor module 15's output shaft to it is rotatory to drive the lead screw through motor module 15, and the screw is installed on moving part 13, screw and lead screw cooperation. The motor module 15 may be a motor, or a structure formed by combining a motor and a speed reducer.

Specifically, the pipe fitting 100 is a heat exchange pipe of the heat exchanger 200, and the pipe expander is used for performing pipe expanding operation on the heat exchange pipe of the heat exchanger 200. The heat exchanger 200 comprises heat exchange fins and heat exchange tubes penetrating through the heat exchange fins, when the heat exchange tubes are expanded, the heat exchange tubes are clamped through the clamping piece 30, then the heat exchange tubes are expanded, the heat exchange tubes can be well contacted with the heat exchange fins, and the heat exchange effect of the heat exchanger is guaranteed.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

the clamping mechanism of the present invention is used for clamping a pipe 100, and comprises: a first pressing member 10 and a second pressing member 20, the first pressing member 10 and the second pressing member 20 being relatively closely and distantly disposed; a clamp 30, the clamp 30 being located between the first pressing member 10 and the second pressing member 20, at least a portion of the clamp 30 being made of a flexible material, the clamp 30 having a clamp hole 301 for receiving the pipe 100; when the first pressing member 10 and the second pressing member 20 are relatively close to each other, the first pressing member 10 and the second pressing member 20 press the clamping member 30, so that the clamping member 30 is deformed, and the pipe 100 located in the clamping hole 301 is clamped. In this way, when the first pressing member 10 and the second pressing member 20 approach each other, the clamping member 30 is pressed, so that the clamping member 30 is deformed, and the clamping hole 301 is deformed, thereby clamping the pipe fitting 100; when the first and second

pressing members

Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances such that, for example, embodiments of the application described herein may be implemented in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A gripping mechanism for gripping a tubular (100), the gripping mechanism comprising:

a first pressing member (10) and a second pressing member (20), the first pressing member (10) and the second pressing member (20) being relatively closely and remotely disposed;

a clamp (30), the clamp (30) being located between the first compression member (10) and the second compression member (20), at least part of the clamp (30) being made of a flexible material, the clamp (30) having a clamp hole (301) for receiving the tubular (100);

when the first pressing piece (10) and the second pressing piece (20) are relatively close to each other, the first pressing piece (10) and the second pressing piece (20) press the clamping piece (30) so that the clamping piece (30) is deformed and the pipe fitting (100) in the clamping hole (301) is clamped;

the distribution direction of the first pressing piece (10) and the second pressing piece (20) is perpendicular to the clamping direction of the clamping piece (30) to the pipe fitting (100);

the pipe fitting clamping device comprises a plurality of clamping pieces (30), wherein the clamping pieces (30) are arranged at intervals, and the clamping pieces (30) are used for clamping a plurality of pipe fittings (100) respectively;

one surface of the first pressing piece (10) close to the second pressing piece (20) and/or one surface of the second pressing piece (20) close to the first pressing piece (10) are/is provided with installation grooves, and one part of the clamping piece (30) is installed in the installation grooves.

2. The clamping mechanism according to claim 1, wherein the first pressing member (10) is provided with a through hole, so that the pipe (100) is inserted into the clamping hole (301) through the through hole; and/or the presence of a gas in the gas,

and an expansion pipe hole (201) is formed in the second pressing piece (20), so that an expansion rod penetrates into the clamping hole (301) through the expansion pipe hole (201) to expand the pipe fitting (100).

3. Clamping mechanism according to claim 1, wherein the clamping member (30) is of a cylindrical configuration.

4. Clamping mechanism according to claim 1, characterized in that the clamping member (30) is made of a rubber material.

5. A pipe expander comprising a gripping mechanism for gripping a tubular (100) to be expanded, characterized in that the gripping mechanism is a gripping mechanism according to any one of claims 1 to 4.

6. The tube expander according to claim 5, characterized in that the first pressing member (10) of the gripping mechanism is fixedly mounted on a main frame of the tube expander; the pipe expander comprises a driving structure, and the driving structure is connected with the second pressing piece (20) so as to drive the second pressing piece (20) to move in a direction close to or far away from the first pressing piece (10).

7. The tube expander according to claim 6, wherein the first pressing member (10) and the second pressing member (20) are spaced apart in a first direction, and wherein the driving structure comprises:

the driving plate (11) is connected with the second pressing piece (20), the driving plate (11) is mounted on a main body frame of the pipe expander through a first sliding fit structure (12), and the first sliding fit structure (12) is arranged in an extending mode along the first direction so that the driving plate (11) can be arranged in a sliding mode along the first direction relative to the main body frame of the pipe expander;

the movable piece (13) is movably arranged along a second direction relative to a main body frame of the pipe expander, the movable piece (13) is matched with the driving plate (11) through a second sliding fit structure (14), and the second sliding fit structure (14) is arranged in an extending mode along a third direction;

the first direction is perpendicular to the second direction, and an included angle between the third direction and the first direction is greater than 0 degrees and smaller than 90 degrees.

8. The tube expander according to claim 7, wherein the first sliding fit structure (12) comprises a first slotted hole (121) and a first slider (122), the first slotted hole (121) being provided on the drive plate (11) and extending in the first direction; the first sliding piece (122) is mounted on a main body frame of the pipe expander, and the first sliding piece (122) is slidably arranged in the first strip-shaped hole (121) along the first direction;

the second sliding fit structure (14) comprises a second strip-shaped hole (141) and a second sliding piece (142), and the second strip-shaped hole (141) is arranged on the driving plate (11) and extends along the third direction; the second sliding piece (142) is installed on the movable piece (13), and the second sliding piece (142) is slidably arranged in the second strip-shaped hole (141) along the third direction.

9. The pipe expander according to claim 8, wherein the driving structure comprises a motor module (15) and a lead screw and nut module, the motor module (15) is mounted on a main frame of the pipe expander, the lead screw and nut module comprises a lead screw and a nut, the lead screw extends along the second direction, the lead screw is connected with an output shaft of the motor module (15) so as to drive the lead screw to rotate through the motor module (15), the nut is mounted on the movable member (13), and the nut is matched with the lead screw.

10. The tube expander according to any one of claims 5 to 9, wherein the tube (100) is a heat exchange tube of a heat exchanger (200), the tube expander being used for performing a tube expanding operation on the heat exchange tube of the heat exchanger (200).