CN219944370U - Pipe expanding equipment - Google Patents

Abstract

The utility model relates to pipe expanding equipment which comprises a portal frame and a workbench, wherein a handheld pipe expander is hung on the portal frame, and a fin positioning tool is arranged on the workbench; the handheld pipe expander is provided with a rotating shaft, a rotating shaft driving part and a gear, a first sliding groove is formed in the handheld pipe expander, a rack type expansion rod is arranged in the first sliding groove, and the gear drives the rack type expansion rod to slide in the first sliding groove; the fin positioning tool comprises a positioning seat, wherein even-number positioning column groups are fixed on the positioning seat, fin slots are formed between two adjacent positioning columns of the same-column positioning column group, and base pipe slots are formed between the two adjacent positioning column groups; the advantages are that: the fin positioning tool can assist the fins to position, so that the installation efficiency and quality of the fins are improved; the handheld pipe expander is combined with the portal frame, so that the handheld work can be facilitated, and the working efficiency is improved; the structure of the gear and the chute is adopted, so that the driving structure is simplified, the linearity of the operation of the expansion rod is ensured, and the qualification rate of the expansion pipe is improved.

Description

Pipe expanding equipment

Technical Field

The utility model relates to the field of pipe expanding equipment, in particular to pipe expanding equipment.

Background

As shown in FIG. 1, the fin tube commonly used in the air-conditioning heat exchanger comprises fins and a base tube, wherein the middle part of the fins is provided with holes, a plurality of fins are required to be sleeved on the base tube during assembly, and then the base tube is subjected to tube expanding operation through a tube expander, so that the fins can be fixed on the base tube.

The existing pipe expanding equipment has the following defects:

1. when the fins are sleeved on the base pipe, no positioning tool is needed, and clamping blocks with constant thickness are required to be added between two adjacent fins, so that the distance between the fins is kept consistent, the efficiency is low, and the product quality is not high; meanwhile, when the pipe expanding operation is carried out, one end of the base pipe needs to be manually held, so that the expansion rod of the pipe expander can enter from the other end of the base pipe, labor is wasted, and the danger is high;

2. the traditional hand-held tube expander needs to utilize more driving mechanisms to drive the expansion rod to convey forwards, the expansion rod conveying line is longer, the expansion rod is easy to incline to one side, and further the expansion rod is difficult to keep in linear motion, so that the expansion tube is uneven, and the qualification rate and the processing efficiency are reduced.

Based on this, the present application is hereby proposed.

Disclosure of Invention

The utility model aims to provide tube expanding equipment so as to improve convenience and yield of fin installation and ensure qualification rate and efficiency of tube expansion.

The pipe expanding equipment comprises a portal frame and a workbench, wherein a handheld pipe expander is hung on the portal frame, and a fin positioning tool is arranged on the workbench;

the handheld pipe expander comprises a chassis and an upper cover, wherein a plurality of first sliding grooves are formed in the chassis and are arranged along the length direction of a workbench, rack-type expansion rods are arranged in the first sliding grooves, a handle, a rotating shaft and a rotating shaft driving part for driving the rotating shaft are fixed at the upper cover, gears matched with the tooth parts of the rack-type expansion rods are fixed on the rotating shaft, and the gears drive the rack-type expansion rods to slide in the first sliding grooves;

the fin positioning tool comprises a positioning seat which is detachably connected to the workbench and arranged along the length direction of the workbench, an even number of positioning column groups are fixed on the positioning seat, each positioning column group comprises a plurality of positioning columns, fin slots are formed between two adjacent positioning columns of the same-column positioning column group, and base pipe slots are formed between two adjacent positioning column groups.

Further, a track arranged along the width direction of the workbench is arranged on the portal frame, a sliding block is arranged on the track, a tube expander lifting mechanism is arranged on the sliding block, and the lifting end of the tube expander lifting mechanism is used for being connected with the handheld tube expander; the workbench is a lifting workbench.

Further, one end of the upper cover, which is close to the workbench, is fixedly provided with a plurality of sleeves which are in one-to-one correspondence with the sliding grooves, and the sleeves are communicated with the corresponding sliding grooves.

Further, the chassis department is fixed with the telescopic part, and the flexible end of telescopic part is fixed with base pipe clamping part, the telescopic part is used for driving base pipe clamping part and moves between workstation and handheld expander.

Further, including fixed supporting bench, fixed supporting bench includes fixed base, is equipped with supporting seat elevating system on the fixed base, and the elevating system's of supporting seat elevating system lift end is equipped with the expansion rod supporting seat, has seted up a plurality of spout second that set up along workstation length direction and with spout one-to-one on the expansion rod supporting seat.

Further, including portable supporting bench, portable supporting bench includes portable base, is equipped with grip slipper elevating system on the portable base, the lift end that the elevating system was done to the centre gripping is equipped with the expansion rod grip slipper, the expansion rod grip slipper includes top board, holding down plate and is used for connecting the bolt assembly of top and holding down plate, the tip of expansion rod is located between top and holding down plate.

Further, a guide inclined plane is arranged at the top end of the positioning column and used for guiding the fins to the fin slots.

Furthermore, the two ends of the fin positioning tool in the length direction are provided with first connecting holes, and the two fin positioning tools can be fixedly connected through the first connecting holes.

Furthermore, the two sides of the fin positioning tool in the width direction are provided with jacks, and the workbench is provided with a plug shaft matched with the jacks.

Further, the connecting device comprises end clamping pieces, wherein a plurality of grooves which are in one-to-one correspondence with the base pipe slots are formed in the end clamping pieces, the base pipes can pass through the grooves, and two ends of the end clamping pieces are provided with connecting holes II which correspond to the connecting holes I.

The utility model has the advantages that:

1. by arranging the multi-section type fin positioning tool, on one hand, the fins can be assisted to position when the fins are connected with the base tube, so that the installation efficiency and quality of the fins are improved, and on the other hand, the number of the fin positioning tools can be increased or decreased according to the length of the fin tube, so that meaningless labor waste is avoided; meanwhile, a detachable connecting structure is arranged between the workbench and the fin positioning tool, so that manual holding operation during tube expansion is omitted, and the safety of the process is improved;

2. the handheld pipe expander has the advantages of simple structure, small size, convenience in hand-held operation and improvement of working efficiency by combining the portal frame; the structure of the upper gear and the lower chute is adopted, so that on one hand, the driving structure is simplified, the gear can directly drive the rack type expansion rod to slide, on the other hand, the linearity of the operation of the expansion rod is ensured by the gear and the chute, and the qualification rate of the expansion pipe is improved; meanwhile, the clamping mechanism is arranged at one end of the handheld pipe expander, so that the pipe does not shake during pipe expansion, and the fixed and movable supporting tables are arranged at the other end of the handheld pipe expander, so that the flatness of the expansion rod and the smoothness of sliding conveying are ensured.

Drawings

FIG. 1 is a schematic view of a three-dimensional structure of a fin tube in the prior art;

FIG. 2 is a schematic view showing a three-dimensional construction of the pipe expanding apparatus according to the embodiment;

FIG. 3 is a schematic view of a three-dimensional structure of a fin positioning tool on a workbench in an embodiment;

FIG. 4 is a schematic view of a three-dimensional structure of a fin positioning tool according to an embodiment;

FIG. 5 is a schematic view of a three-dimensional structure of a multi-section fin positioning tooling after connection in an embodiment;

FIG. 6 is a schematic view of a three-dimensional construction of a work table in an embodiment;

FIG. 7 is a schematic view showing a state in which a fin is inserted into a fin positioning tool in an embodiment;

FIG. 8 is a schematic view showing the state of the fin, the base pipe, and the end clips mounted on the fin positioning tool according to the embodiment;

FIG. 9 is a schematic view of a three-dimensional configuration of a hand-held expander, stationary and mobile support stands in an embodiment;

FIG. 10 is a side view schematic of FIG. 9;

FIG. 11 is a schematic view of a three-dimensional construction of a hand-held expander in an embodiment;

FIG. 12 is a schematic view of a three-dimensional structure of a movable supporting table in an embodiment;

FIG. 13 is a schematic view showing a three-dimensional configuration of a stationary support table in the embodiment;

FIG. 14 is a schematic view of the internal three-dimensional configuration of a hand-held expander in an embodiment;

FIG. 15 is a schematic view showing the clamping mechanism of FIG. 14 extended;

fig. 16 is a schematic view illustrating an operation state of the pipe expanding apparatus of fig. 2;

FIG. 17 is an enlarged schematic view of portion A of FIG. 16;

description of the reference numerals

1-fins; 2-base pipe;

3-portal frames, 301-tracks and 302-electric hoists;

4-workbench, 401-inserting shaft;

5-fin positioning tools, 501-positioning seats, 502-positioning columns, 503-first connecting holes, 504-second connecting holes, 505-end clamping pieces, 506-grooves and 507-jacks;

6-hand-held pipe expander, 601-chassis, 602-chute I, 603-hanging ring, 604-handle, 605-rotating shaft, 606-motor, 607-gear, 608-sleeve, 609-telescopic part, 610-clamping part;

7-fixed supporting table, 701-fixed base, 702-supporting seat lifting part, 703-expansion rod supporting seat and 704-chute II;

8-movable supporting tables, 801-movable bases, 802-clamping seat lifting parts, 803-expansion rod clamping seats, 804-upper pressing plates and 805-lower pressing plates;

9-rack type expansion rod.

Detailed Description

The present utility model will be described in further detail with reference to the following embodiments, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like herein indicate an orientation or a positional relationship based on the orientation or the positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The embodiment provides a tube expanding device, which comprises a portal frame 3 and a workbench 4, wherein the workbench 4 is long enough to meet the length of a fin tube, and the workbench 4 is also provided with a certain width to realize synchronous operation of a plurality of handheld tube expanding machines 6; the gantry 3 is provided at one end of the table 4 and placed in the width direction of the table 4. As shown in fig. 2, a track 301 is disposed on the gantry 3 along the width direction of the gantry, a plurality of sliding blocks (a plurality of sliding blocks may be disposed on the track 301, for convenience of illustration, only one sliding block is shown in the drawing), an electric hoist 302 is disposed on the sliding block, and a lifting end of the electric hoist 302 is connected with a handheld pipe expander 6. In this embodiment, the workbench 4 is a lifting workbench, and a fin positioning tool 5 is arranged on the workbench 4.

As shown in fig. 2 to 6, in general, the fin positioning fixture 5 has multiple sections, each section of fin positioning fixture 5 includes a positioning seat 501 disposed along the length direction of the workbench 4, an even number of positioning column groups are fixed on the positioning seat 501, each positioning column group includes a plurality of positioning columns 502, fin slots are formed between two adjacent positioning columns 502 of the same-column positioning column group, and base pipe slots are formed between two adjacent positioning column groups. The two ends of the fin positioning tool 5 in the length direction are provided with first connecting holes 503, and the two sections of fin positioning tools 5 can be connected and fixed into a whole through the first connecting holes 503; the two sides of the fin positioning tool 5 in the width direction are provided with jacks 507, and the workbench 4 is provided with a plug shaft 401 matched with the jacks 507. As shown in fig. 7 and 8, when in use, a plurality of sections of fin positioning tools 5 are placed on the workbench 4 according to the length of the fin tube, when in placement, two adjacent sections of fin positioning tools 5 are connected into a whole through a bolt and a first connecting hole 503, and a second connecting hole 504 of each section of fin positioning tool 5 is connected with the inserting shaft 401 in a matched manner, so that the whole fin positioning tool 5 is limited by the workbench 4, and movement during tube expansion is avoided; then the fins 1 are placed and finally the base tube 2 is inserted (of course, the fins 1 can be placed on the fin positioning tool 5 in other places in advance, then positioned on the workbench 4, and finally the base tube 2 is inserted, so that the assembly line operation can be realized, and the efficiency can be improved).

As shown in fig. 4, in this embodiment, the fin positioning fixture 5 has four rows of positioning columns, so that double-station and single-station operations can be realized, that is, when the base pipe slots on two sides in the width direction are used, the double-station operations are performed, and when the middle base pipe slot is used, the single-station operations are performed. So designed, it is necessary to use the hand-held tube expander 6 in the following, and three sliding grooves 602 are provided on the chassis 601 of the hand-held tube expander 6, and when double-station operation is used, two sliding grooves 602 are used, and when single-station operation is used, the middle sliding groove 602 is used.

As shown in fig. 4, the positioning column 502 of the present embodiment adopts an arrow shape, and two sides of the top end of the arrow-shaped positioning column 502 are downward inclined guiding inclined planes, when the fin 1 is inserted, the guiding inclined planes can guide the fin 1 to the fin slot.

As shown in fig. 11 and 14, the handheld tube expander 6 comprises a chassis 601 and an upper cover, wherein a first 3-channel U-shaped chute 602 arranged along the length direction of the workbench 4 is formed in the chassis 601, a rack-type expansion rod 9 (the rack-type expansion rod 9 is provided with teeth on the rod wall of the existing expansion rod to realize the matching of the expansion rod and the gear 607), a lifting ring 603, a handle 604, a rotating shaft 605 and a servo motor 606 for driving the rotating shaft 605 are fixed at the upper cover, a gear 607 matched with the teeth of the rack-type expansion rod 9 is fixed on the rotating shaft 605, and the gear 607 drives the rack-type expansion rod 9 to slide in the first chute 602; the handle 604 facilitates the handling of the expander by an operator; the hanging ring 603 facilitates the connection of the handheld tube expander 6 with the electric hoist 302. In this embodiment, the servo motor 606, the rotating shaft 605 and the gear 607 are provided with two sets to improve the driving force of the expansion rod. In this embodiment, the gear 607 is disposed above the first chute 602, and the gear 607 can drive the rack-type expansion rod 9 to advance and simultaneously press the rack-type expansion rod 9 to avoid tilting; the first chute 602 wraps the two sides and the bottom of the rack-type expansion rod 9, and avoids the inclination of the rack-type expansion rod during movement.

Preferably, a plurality of sleeves 608 corresponding to the first sliding grooves 602 one by one are fixed at one end of the upper cover, close to the workbench 4, and the sleeves 608 are communicated with the corresponding first sliding grooves 602, so that the expansion rod can enter the sleeves 608; next, a telescopic part 609 is fixed at the chassis 601, a base pipe clamping part 610 is fixed at a telescopic end of the telescopic part 609, and the telescopic part 609 is used for driving the base pipe clamping part 610 to move between the workbench 4 and the handheld pipe expander 6. As shown in the arrow direction in fig. 17 and in fig. 15, after the fin positioning tool 5, the fins 1 and the base pipe 2 on the table 4 are all placed, the sleeve 608 of the hand-held expander 6 is inserted into one end of the base pipe 2, and then the telescopic part 609 is driven, so that the base pipe clamping part 610 moves from the sleeve 608 end to the base pipe end, and then the base pipe 2 is clamped by the base pipe 2 clamping part 610, so that the end of the base pipe 2 is prevented from moving. As shown in fig. 16 and 17, after that, the servo motor 606 is started, the gear 607 drives the rack-type expansion rod 9 to advance, and the rack-type expansion rod 9 enters the casing 608 and then enters the base pipe 2 for expanding.

As shown in fig. 8 and 17, in this embodiment, an end clamping piece 505 is provided at one end of the fin positioning tool 5, a plurality of U-shaped grooves 506 corresponding to the base pipe slots one by one are provided on the end clamping piece 505, the grooves 506 can just allow the base pipe 2 to pass through, and two ends of the end clamping piece 505 are provided with two connecting holes 504 corresponding to the first connecting hole 503. The end clip 505 needs to be installed before the sleeve 608 of the hand-held expander 6 is inserted into the end of the base pipe, and the end clip 505 has a certain thickness and rigidity, so as to protect the sleeve 608 when the positioning post 502 at the front end is inserted from being collided.

The expansion and contraction portion 609 in this embodiment employs a linear cylinder, and the base pipe clamping portion 610 employs a clamping cylinder.

Because the rack type expansion rod 9 is long, the rack type expansion rod 9 which does not enter the handheld pipe expander 6 easily shakes at the rear end, and the quality of the pipe expanding process is affected. Preferably, the present embodiment comprises a stationary and a mobile support table, wherein the mobile support table 8 is arranged at the end and the stationary support table 7 is arranged between the mobile support table 8 and the hand-held expander 6. As shown in fig. 9 and 13, the fixed supporting table 7 includes a fixed base 701 with a sufficient weight, a supporting seat lifting part 702 is provided on the fixed base 701, an expansion rod supporting seat 703 is provided at the lifting end of the supporting seat lifting part 702, a plurality of U-shaped second sliding grooves 704 are provided on the expansion rod supporting seat 703 along the length direction of the table 4 and in one-to-one correspondence with the first sliding grooves 602, the rack-shaped expansion rods 9 can slide in the second sliding grooves 704, and the second sliding grooves 704 can assist the rack-shaped expansion rods 9 to perform linear motion. As shown in fig. 9 and 12, the movable supporting table 8 includes a movable base 801, a lifting part 803 of a clamping seat is provided on the movable base 801, an expansion rod clamping seat 803 is provided at a lifting end of the lifting part, the expansion rod clamping seat 803 includes an upper pressing plate 804, a lower pressing plate 805 and a bolt assembly for connecting the upper pressing plate 804 and the lower pressing plate 805, the upper pressing plate 804 and the lower pressing plate 805 can be tightly pressed by screwing the bolt assembly, an end of the expansion rod is located between the upper pressing plate 804 and the lower pressing plate 805, the rack-type expansion rod 9 is tightly pressed by the upper pressing plate 804 and the lower pressing plate 805, and the end shake of the rack-type expansion rod 9 is avoided. In this embodiment, the supporting seat lifting portion 702 and the clamping seat lifting portion 803 may each be an electric push rod; the bottom of the movable base 801 can be provided with a rail wheel, and further, the ground of the factory can be provided with a rail matched with the rail wheel, so that the linearity of the movement of the movable base 801 is ensured.

The above embodiments are only for illustrating the concept of the present utility model and not for limiting the protection of the claims of the present utility model, and all the insubstantial modifications of the present utility model using the concept shall fall within the protection scope of the present utility model.

Claims (10)

1. The pipe expanding equipment is characterized by comprising a portal frame and a workbench, wherein a handheld pipe expander is hung on the portal frame, and a fin positioning tool is arranged on the workbench;

the handheld pipe expander comprises a chassis and an upper cover, wherein a plurality of first sliding grooves are formed in the chassis and are arranged along the length direction of a workbench, rack-type expansion rods are arranged in the first sliding grooves, a handle, a rotating shaft and a rotating shaft driving part for driving the rotating shaft are fixed at the upper cover, gears matched with the tooth parts of the rack-type expansion rods are fixed on the rotating shaft, and the gears drive the rack-type expansion rods to slide in the first sliding grooves;

the fin positioning tool comprises a positioning seat which is detachably connected to the workbench and arranged along the length direction of the workbench, an even number of positioning column groups are fixed on the positioning seat, each positioning column group comprises a plurality of positioning columns, fin slots are formed between two adjacent positioning columns of the same-column positioning column group, and base pipe slots are formed between two adjacent positioning column groups.

2. The pipe expanding equipment according to claim 1, wherein a rail arranged along the width direction of the workbench is arranged on the portal frame, a sliding block is arranged on the rail, a pipe expander lifting mechanism is arranged on the sliding block, and the lifting end of the pipe expander lifting mechanism is used for being connected with the handheld pipe expander; the workbench is a lifting workbench.

3. An expanding device as claimed in claim 1, wherein a plurality of sleeves corresponding to the sliding grooves one by one are fixed at one end of the upper cover close to the workbench, and the sleeves are communicated with the corresponding sliding grooves one.

4. A pipe expander as claimed in claim 3, wherein a telescopic part is fixed to the chassis, and a base pipe clamping part is fixed to a telescopic end of the telescopic part, the telescopic part being adapted to drive the base pipe clamping part to move between the table and the hand-held pipe expander.

5. The pipe expanding equipment according to claim 1, comprising a fixed supporting table, wherein the fixed supporting table comprises a fixed base, a supporting seat lifting part is arranged on the fixed base, an expanding rod supporting seat is arranged at the lifting end of the supporting seat lifting part, and a plurality of sliding grooves II which are arranged along the length direction of the working table and correspond to the sliding grooves one by one are formed in the expanding rod supporting seat.

6. The pipe expanding equipment according to claim 1, comprising a movable supporting table, wherein the movable supporting table comprises a movable base, a clamping seat lifting part is arranged on the movable base, an expanding rod clamping seat is arranged at the lifting end of the clamping lifting part, the expanding rod clamping seat comprises an upper pressing plate, a lower pressing plate and a bolt assembly for connecting the upper pressing plate and the lower pressing plate, and the end part of the expanding rod is positioned between the upper pressing plate and the lower pressing plate.

7. An expander apparatus according to claim 1, wherein the top end of the locating post is provided with a guide ramp for guiding the fins to the fin slots.

8. An expander apparatus according to claim 1, wherein the fin positioning tool is provided with a first connecting hole at each of the two ends in the longitudinal direction thereof, and wherein the two fin positioning tools are fixedly connected to each other through the first connecting hole.

9. The tube expanding device as claimed in claim 1, wherein the fin positioning tool is provided with insertion holes on both sides in the width direction, and the workbench is provided with insertion shafts matched with the insertion holes.

10. The pipe expanding equipment according to claim 8, comprising end clamping pieces, wherein a plurality of grooves which are in one-to-one correspondence with the base pipe slots are formed in the end clamping pieces, the grooves can be just used for the base pipe to pass through, and two ends of the end clamping pieces are provided with connecting holes II which are corresponding to the connecting holes I.