CN217369946U - Sleeve heat exchanger bush flanging device - Google Patents

Abstract

The utility model discloses a bushing heat exchanger bush flanging device, including the lead screw, draw the core, go up the frock, lower frock and dabber, be equipped with first storage tank on the frock down, go up and seted up the second storage tank on the frock, go up and seted up a plurality of locating holes on the frock, be fixed with a plurality of locating pins on the frock down, locating hole and locating pin plug are connected, the one end of dabber is articulated with frock down, go up behind frock and the frock lock down, restrict the dabber between first storage tank and second storage tank, the reducing of dabber is served and is offered the third storage tank that is used for placing and draws the core, draw core and third storage tank sliding fit, draw core and lead screw threaded connection, go up and seted up first through-hole on the frock, first through-hole and second storage tank intercommunication, the lead screw with draw the core homoenergetic and pass first through-hole. The small hole on the bushing is enlarged by pulling the drawing core, and an upward flanging is formed at the opening of the drawing core, so that the welding leakage phenomenon is avoided when the bushing and the copper connecting pipe are welded.

Description

Bushing flanging device of sleeve heat exchanger

Technical Field

The utility model relates to the field of machining, especially, relate to a bushing flanging device of casing heat exchanger.

Background

The double-pipe heat exchanger is one of common air energy heat pump parts, and the double-pipe heat exchanger comprises outer tube stainless steel pipe and inner tube screw thread copper pipe, needs bushing connection at both junctions, and this bush needs to punch and link to each other with the copper pipe, because the contact surface can have the hourglass phenomenon when the welding is taken over with the copper to the bush hole site.

SUMMERY OF THE UTILITY MODEL

In order to solve the hole site on the bush among the prior art and during the welding with copper takeover because the contact surface leads to the hourglass phenomenon of welding for a short time, an object of the utility model is to provide a bushing flanging device of casing heat exchanger.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the drawing device comprises a bushing, a workbench, a screw rod, a drawing core, an upper tool, a lower tool, a mandrel and a lifting mechanism for the screw rod, wherein the lower tool is arranged on the workbench, the lower tool is provided with a first containing groove, the upper tool is provided with a second containing groove, the upper tool is provided with a plurality of locating holes, the lower tool is fixedly provided with a plurality of locating pins, the locating holes are connected with the locating pins in a plugging manner, one end of the mandrel is a reducing end, the other end of the mandrel is hinged with the lower tool, the mandrel is limited between the first containing groove and the second containing groove after the upper tool and the lower tool are buckled, the reducing end of the mandrel is provided with a third containing groove for placing the drawing core, the drawing core is in sliding fit with the third containing groove, the top of the drawing core is provided with a first threaded hole, the drawing core is in threaded connection with the screw rod through the first threaded hole, the upper tool is provided with a first through hole, and the first through hole is communicated with the second containing groove, the screw rod and the drawing core can penetrate through the first through hole.

Preferably, the lower tool is fixedly provided with a connecting seat, and the mandrel is hinged with the connecting seat through a hinge shaft; the connecting seat is positioned in the first accommodating groove. In this way, the structure of the device is made more compact.

Preferably, the bottom of the third accommodating groove is recessed downwards to form a limiting groove, the bottom of the drawing core is recessed downwards to form a limiting part, and the limiting part is connected with the limiting groove in a plugging and unplugging manner, so that the drawing core is prevented from rotating in the third accommodating groove. Therefore, the screw rod is more stable and easier to connect with the drawing core.

Preferably, the top of the drawing core is in the shape of a circular truncated cone. Therefore, the drawing core can penetrate through the small hole in the bushing more conveniently, the drawing core and the small hole can be centered more easily, and the precision of the flanging position is further ensured

Preferably, the pneumatic screwdriver further comprises a pneumatic screwdriver used for driving the screw rod to rotate, and the pneumatic screwdriver is mounted on the screw rod. Therefore, the screw rod is more labor-saving and safer to rotate.

Preferably, the lifting mechanism comprises a pressing plate and a hydraulic cylinder for driving the pressing plate to lift, the pressing plate is located above the upper tool, one end of the hydraulic cylinder is connected with the workbench, the other end of the hydraulic cylinder is connected with the pressing plate, the screw rod penetrates through the pressing plate, and the screw rod is in threaded connection with the pressing plate.

Preferably, the device also comprises a plurality of guide posts and a plurality of guide sleeves, wherein the guide posts are fixedly arranged on the workbench, the guide sleeves are respectively sleeved on the guide posts, and the guide sleeves are fixedly connected with the pressing plate. Thus, the moving process of the pressure plate is more stable.

Preferably, the pressing device further comprises a pressing block used for preventing the pressing plate from abutting against the upper tool, the pressing block is fixedly installed at the bottom of the pressing plate through a bolt, and when the pressing plate moves to the lowest point of the stroke, the bottom of the pressing block abuts against the workbench.

Preferably, the pressing block is provided with a pressing part in a protruding mode, and when the pressing plate is located at the lowest point of the stroke, the pressing part abuts against the upper tool; the pressing part is provided with a second through hole, a thread is arranged in the second through hole, and the pressing part is installed at the bottom of the pressing plate through the second through hole and the bolt.

Preferably, the bolt is provided with a second threaded hole, the screw rod penetrates through the second threaded hole, and the screw rod is in threaded connection with the bolt through the second threaded hole. In this way, the structure is made more compact.

The technical scheme of the utility model beneficial effect does: 1. the drawing core is pulled to expand the small hole on the bushing to form an upward flanging at the opening, so that the welding leakage phenomenon is avoided when the bushing is welded with the copper connecting pipe; 2. when the pulling mechanism pulls the pulling core upwards through the screw rod, the pulling core is abutted against the inner wall of the bush, the mandrel tends to rotate around the hinged position of the mandrel and the lower tool due to the stress of the bush, the upper tool is stressed by the oblique force from the mandrel, and the upper tool is abutted against the positioning pin due to the arrangement of the positioning pin, so that the upper tool and the lower tool are prevented from disengaging; therefore, the flaring process is more stable, and the structure is simpler.

Drawings

FIG. 1 is a schematic structural view of a bushing flanging device of a double-pipe heat exchanger;

FIG. 2 is a first schematic view of a connection structure of a pressing plate and a pressing block;

FIG. 3 is a schematic view of a connection structure of a pressing plate and a pressing block;

FIG. 4 is a schematic structural view of an upper tool, a lower tool, a core, a drawing core and a screw rod;

FIG. 5 is a schematic view of a connection structure of the mandrel and the lower tool

FIG. 6 is a schematic structural view of an upper tooling;

FIG. 7 is a schematic structural view of the mandrel;

FIG. 8 is a schematic structural view of a lower tool;

FIG. 9 is a schematic view of a drawing core.

Reference numerals: 1. a work table; 21. a lower tool; 211. a first accommodating groove; 212. positioning pins; 213. a connecting seat; 22. assembling a tool; 221. a second accommodating groove; 222. a first through hole; 223. positioning holes; 23. drawing the core; 231. a first threaded hole; 232. a limiting part; 24. a mandrel; 241. a reducing end; 242. a connecting end; 243. a third accommodating groove; 25. hinging a shaft; 26. a screw rod; 3. pressing a plate; 31. a guide sleeve; 4. briquetting; 41. a pressing part; 42. a second through hole; 5. a bolt; 51. a second threaded hole; 6. a guide post; 7. wind batch; 8. a bushing.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" 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 to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1-9, a bushing edge-turning device for a sleeve heat exchanger includes a bushing 8, a workbench 1, a lead screw 26, a drawing core 23, an upper tool 22, a lower tool 21, a mandrel 24, and a lifting mechanism for the lead screw 26, where the lower tool 21 is installed on the workbench 1, the lower tool 21 is provided with a first accommodating groove 211, the upper tool 22 is provided with a second accommodating groove 221, the upper tool 22 is provided with a plurality of positioning holes 223, the lower tool 21 is fixed with a plurality of positioning pins 212, the positioning holes 223 are connected with the positioning pins 212 in a plugging manner, one end of the mandrel 24 is a variable diameter end 241, the other end of the mandrel 24 is a connecting end 242, the connecting end 242 is hinged with the lower tool 21, after the upper tool 22 and the lower tool 21 are fastened, the mandrel 24 is limited between the first accommodating groove 211 and the second accommodating groove 221, the variable diameter end 241 of the mandrel 24 is provided with a third accommodating groove 243 for placing the drawing core 23, the drawing core 23 is in sliding fit with the third accommodating groove 243, a first threaded hole 231 is formed in the top of the drawing core 23, the drawing core 23 is in threaded connection with the screw rod 26 through the first threaded hole 231, a first through hole 222 is formed in the upper tool 22, the first through hole 222 is communicated with the second accommodating groove 221, and both the screw rod 26 and the drawing core 23 can penetrate through the first through hole 222.

The reaming and flanging process of the bushing 8 is as follows: 1. a small hole is formed in the bushing 8, the screw rod 26 is separated from the drawing core 23, and the drawing core 23 is placed in the third accommodating groove 243; 2. the bush 8 is sleeved at the reducing end 241 of the mandrel 24, and the small hole is communicated with the third accommodating groove 243; 3. the upper tool 22 is buckled with the lower tool 21, and the positioning pin 212 is inserted into the positioning hole 223; 4. one end of the screw rod 26 passes through the first through hole 222 of the upper tool 22 and the small hole of the bushing 8 and then is inserted into the third accommodating groove 243 and is connected with the first threaded hole 231 of the drawing core 23, so that the screw rod 26 and the drawing core 23 are fixed; 5. and the lifting mechanism lifts the screw rod 26 upwards, the screw rod 26 drives the drawing core 23 to penetrate through the third accommodating groove 243 of the mandrel 24, the small hole in the bushing 8 and the first through hole 222 of the upper tool 22, then the drawing mechanism stops, and the bushing reaming is completed.

So set up, cup joint back on dabber 24 when bush 8, will go up frock 22 and lower frock 21 lock, locating pin 212 inserts in the locating hole 223, when pulling mechanism draws core 23 through lead screw 26 lift-up, draw core 23 and bush 8's inner wall to offset, because bush 8 atress, make dabber 24 possess around its and lower frock 21 articulated position pivoted trend, it receives the oblique power from dabber 23 to go up frock 22, because the setting of locating pin 212, make frock 22 and locating pin 212 support tightly, prevent frock 22 and lower frock 21 and break away from.

In this embodiment, the positioning pins 212 are respectively disposed at two sides of the first receiving cavity 211, and the positioning holes 223 are respectively disposed at two sides of the second receiving cavity 221. This makes the connection of the upper tool 22 and the lower tool 21 more stable.

In this embodiment, the lower tool 21 is fixedly provided with a connecting seat 213, and the mandrel 23 is hinged to the connecting seat 213 through a hinge shaft 25. Further, the connecting seat 213 is located in the first receiving cavity 211. This makes the structure more compact.

In order to prevent the drawing core 23 from rotating in the third receiving groove 243, in this embodiment, a limiting portion 232 protrudes from the bottom of the drawing core 23, a limiting groove is recessed downward from the bottom of the third receiving groove 243, and when the limiting portion 232 is inserted into the limiting groove, the drawing core 23 can be prevented from rotating in the third receiving groove 243.

In other embodiments, the top section of the drawing core 23 is in a circular truncated cone shape, so that the drawing core 23 can penetrate through the small hole in the bushing 8 more conveniently, and the drawing core 23 and the small hole are more easily centered, so that the precision of the flanging position is ensured.

As shown in fig. 1-3, in this embodiment, the lifting mechanism includes a pressing plate 3 and a hydraulic cylinder for driving the pressing plate 3 to lift, the pressing plate 3 is located above the upper fixture 22, one end of the hydraulic cylinder is connected to the working table 1, the other end of the hydraulic cylinder is connected to the pressing plate 3, a screw rod 26 penetrates through the pressing plate 3, and the screw rod 26 is in threaded connection with the pressing plate 3.

In order to guarantee the stability of clamp plate 3 lift process, in this embodiment, still include a plurality of guide posts 6 and a plurality of uide bushing 31, the equal fixed mounting of a plurality of guide posts 6 is on workstation 1, and a plurality of uide bushings 31 overlap respectively on a plurality of guide posts 6, a plurality of uide bushings 31 all with clamp plate 3 fixed connection. Further, there are four guide posts 6, and the four guide posts 6 are respectively arranged at the left and right ends of the pressing plate 3.

In order to avoid the damage of the tool caused by the collision between the pressing plate 3 and the upper tool 22, in this embodiment, the pressing plate further includes a pressing block 4 for preventing the pressing plate 3 and the upper tool 22 from abutting against each other, the pressing block 4 is fixedly installed at the bottom of the pressing plate 3 through a bolt 5, and when the pressing plate 3 moves to the lowest point of the stroke, the bottom of the pressing block 4 abuts against the workbench 1, so that the pressing plate 3 is prevented from moving downwards continuously.

In order to ensure the stability when the screw rod 26 is connected with the drawing core 23, in the embodiment, a pressing part 41 protrudes on the pressing block 4, and when the pressing plate 3 is located at the lowest point of the stroke, the pressing part 41 abuts against the upper tool 22; the pressing part 41 is provided with a second through hole 42, a thread is arranged in the second through hole 42, and the pressing part 41 is in threaded connection with the bolt 5 through the second through hole 42.

In order to make the structure of the device more compact, in this embodiment, the bolt 5 is provided with a second threaded hole 51, the lead screw 26 passes through the second threaded hole 51, the lead screw 26 is in threaded connection with the bolt 5 through the second threaded hole 51, and the lead screw 26 is mounted at the bottom of the pressure plate 3 through the second threaded hole 51 and the bolt 5.

As shown in fig. 1, in order to facilitate driving the screw rod 26 and make the flanging device more labor-saving and more convenient, in this embodiment, the flanging device further comprises a wind batch 7 for driving the screw rod 26 to rotate, and the wind batch 7 is installed on the screw rod 26.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.

Claims (10)

1. The utility model provides a double-pipe heat exchanger bush flanging device which characterized in that: the drawing device comprises a bush (8), a workbench (1), a screw rod (26), a drawing core (23), an upper tool (22), a lower tool (21), a mandrel (24) and a lifting mechanism for the screw rod (26), wherein the lower tool (21) is installed on the workbench (1), a first accommodating groove (211) is formed in the lower tool (21), a second accommodating groove (221) is formed in the upper tool (22), a plurality of positioning holes (223) are formed in the upper tool (22), a plurality of positioning pins (212) are fixed on the lower tool (21), the positioning holes (223) are connected with the positioning pins (212) in a plugging and pulling mode, one end of the mandrel (24) is a reducing end (241), the other end of the mandrel (24) is hinged to the lower tool (21), the mandrel (24) is limited between the first accommodating groove (211) and the second accommodating groove (221) after the upper tool (22) and the lower tool (21) are buckled, and a third drawing core (23) is formed in the reducing end (241) of the mandrel (24) The drawing core (23) is in sliding fit with the third accommodating groove (243), a first threaded hole (231) is formed in the top of the drawing core (23), the drawing core (23) is in threaded connection with the screw rod (26) through the first threaded hole (231), a first through hole (222) is formed in the upper tool (22), the first through hole (222) is communicated with the second accommodating groove (221), and the screw rod (26) and the drawing core (23) can penetrate through the first through hole (222).

2. The bushing flanging device of the double-pipe heat exchanger of claim 1, wherein: the lower tool (21) is fixedly provided with a connecting seat (213), and the mandrel (24) is hinged with the connecting seat (213) through a hinged shaft (25); the connecting seat (213) is positioned in the first accommodating groove (211).

3. The bushing flanging device of the double-pipe heat exchanger of claim 1, wherein: the bottom of the third accommodating groove (243) is sunken downwards to form a limiting groove, the bottom of the drawing core (23) is sunken downwards to form a limiting part (232), and the limiting part (232) is connected with the limiting groove in a plugging and unplugging mode, so that the drawing core (23) is prevented from rotating in the third accommodating groove (243).

4. The bushing flanging device of the double-pipe heat exchanger of claim 1, wherein: the top of the drawing core (23) is in a circular truncated cone shape.

5. The bushing flanging device of the double-pipe heat exchanger of claim 1, wherein: the pneumatic screwdriver further comprises a pneumatic screwdriver (7) used for driving the screw rod (26) to rotate, and the pneumatic screwdriver (7) is installed on the screw rod (26).

6. The bushing flanging device of the double-pipe heat exchanger of claim 1, wherein: the lifting mechanism comprises a pressing plate (3) and a hydraulic cylinder for driving the pressing plate (3) to lift, the pressing plate (3) is located above the upper tooling (22), one end of the hydraulic cylinder is connected with the workbench (1), the other end of the hydraulic cylinder is connected with the pressing plate (3), the screw rod (26) penetrates through the pressing plate (3), and the screw rod (26) is in threaded connection with the pressing plate (3).

7. The bushing flanging device of a double-pipe heat exchanger of claim 6, wherein: still include a plurality of guide posts (6) and a plurality of uide bushing (31), the equal fixed mounting of a plurality of guide posts (6) is on workstation (1), and a plurality of uide bushing (31) overlaps respectively on a plurality of guide posts (6), a plurality of uide bushing (31) all with clamp plate (3) fixed connection.

8. The bushing flanging device of a double-pipe heat exchanger of claim 6, wherein: the pressing plate is characterized by further comprising a pressing block (4) used for preventing the pressing plate (3) and the upper tool (22) from abutting against each other, the pressing block (4) is fixedly installed at the bottom of the pressing plate (3) through a bolt (5), and when the pressing plate (3) moves to the lowest point of the stroke, the bottom of the pressing block (4) abuts against the workbench (1).

9. The bushing flanging device of the double-pipe heat exchanger of claim 8, wherein: a pressing part (41) is protruded on the pressing block (4), and when the pressing block (3) is located at the lowest point of the stroke, the pressing part (41) is pressed against the upper tool (22); the pressing part (41) is provided with a second through hole (42), a thread is arranged in the second through hole (42), and the pressing part (41) is installed at the bottom of the pressing plate (3) through the second through hole (42) and the bolt (5).

10. The bushing flanging device of the double-pipe heat exchanger of claim 8, wherein: a second threaded hole (51) is formed in the bolt (5), the screw rod (26) penetrates through the second threaded hole (51), and the screw rod (26) is in threaded connection with the bolt (5) through the second threaded hole (51).

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