CN213195340U

CN213195340U - Pipe expanding mechanism capable of selecting pipe expanding operation according to pipe fitting quantity

Info

Publication number: CN213195340U
Application number: CN201922498757.9U
Authority: CN
Inventors: 龙晓斌; 张运广; 龙晓明; 秦杨宣
Original assignee: Oms Machinery Co Ltd
Current assignee: Oms Machinery Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2021-05-14
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a can select expand tube mechanism of expand tube work according to pipe fitting quantity, which comprises a frame, be provided with two piece at least hollow expander rolls in the frame, all be provided with the core bar in each expander roll, the left end of expander roll is provided with the head that expands, the left end of core bar is provided with can will expand the head core that expands when the core bar moves right, the right side of frame is provided with removes the seat, it can be along controlling and remove by a main drive to remove the seat, the right-hand member of core bar stretches out in the expander roll and extends to removing the seat, each core bar and remove and all be provided with the connecting piece that can be connected the two between the seat, the core bar that will correspond when the connecting piece is in the operating position with removing the seat and be connected, the connecting piece makes the corresponding core bar break away from with removing the seat when being in the non-operating position, each connecting piece is driven and can. The utility model discloses can carry out the expand tube to the pipe fitting of each station selectively as required, avoid the condition of repeated expand tube to take place.

Description

Pipe expanding mechanism capable of selecting pipe expanding operation according to pipe fitting quantity

Technical Field

The utility model relates to an expand tube technical field, especially a be applied to the expand tube machine, can select the expand tube mechanism of expand tube work according to pipe fitting quantity.

Background

The traditional tube expander generally adopts a direct pushing mode to expand tubes, namely, the tubes enter from one end of a copper tube through an expansion head, and the copper tubes are forced to expand through the action of the expansion head, the process is suitable for the production of heat exchangers of a small variety and a large batch, but the process has the defects of high production cost, inflexible production and the like caused by the fact that expansion rods, the expansion head and U supports need to be replaced if the existing production mode is adopted for the production of heat exchangers of a large variety and a small batch, and particularly, each variety needs to be provided with the corresponding U support.

In order to solve the problem, the utility model with application number 201510412617.9 discloses an expand head structure and expand tube equipment of using thereof, and among this expand tube equipment, the external diameter of the head that expands is variable, adaptable in the heat exchanger production requirement that multiple specification required. The working principle of the tube expansion is as follows: all the core rods are pulled to axially move by the same tube expanding mechanism, the hollow expanding rod can be expanded in the moving process of the core rods, and finally the pipe fitting sleeved outside the expanding rod is also expanded. Such a pipe expander also has some problems, because the material loading of pipe fitting is automatic material loading, the quantity of material loading pipe fitting all equals with the quantity of expander roll each time, when pipe fitting quantity is not equal to the multiple of expander roll, for example, the expander roll quantity is 3, pipe fitting quantity is 7, when so the third material loading, can load 5 th-7 pipe fittings on the pipe expander, just carry out the secondary expand tube to 5 th and 6 th pipe fittings this moment, lead to the pipe fitting to be bloated bad scheduling problem.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a can select the expander roll work, avoid the expander roll mechanism that the repeated expander roll condition appears according to pipe fitting quantity.

The utility model discloses a solve its technical problem and the technical scheme who adopts is:

a pipe expanding mechanism capable of selecting pipe expanding work according to the number of pipe fittings comprises a machine frame, wherein at least two hollow expanding rods are arranged on the machine frame, a core rod capable of moving relative to the expanding rods in the axial direction is arranged in each expanding rod, an expanding head is arranged at the left end of each expanding rod, a core head capable of expanding the expanding head when the core rod moves rightwards is arranged at the left end of each core rod, a moving seat is arranged at the right side of the machine frame, the moving seat is driven by a main driver to move leftwards and rightwards, the right end of each core rod extends out of the expanding rods and extends to the moving seat, a connecting piece capable of connecting the core rods and the moving seat is arranged between each core rod and the moving seat, the corresponding core rod is connected with the moving seat when the connecting piece is in a working position, and the corresponding core rod is separated from the moving seat when the connecting piece is in a non-working, each link is driven by a secondary drive to be switchable between an operative position and an inoperative position.

Preferably, the right side of the moving seat is provided with a pushing surface, the core bar is provided with a first limiting block positioned on the right side of the pushing surface, and the connecting piece is a movable base plate capable of being inserted into and withdrawn from a space between the first limiting block and the pushing surface.

Preferably, the thickness of the movable cushion plate is larger than the stroke of the expansion rod during the pipe expansion operation.

Preferably, the insertion end of the movable base plate is provided with a U-shaped notch matched with the expansion rod.

Preferably, the lower end of the movable backing plate is an insertion end, the insertion end is provided with a plug part, and the thickness of the plug part is smaller than that of the middle part of the movable backing plate.

Preferably, the sub-driver is a cylinder capable of driving the movable pad to move up and down.

Preferably, the rack comprises an expansion rod support and a base, the base and the movable base are spaced at a certain distance, a wedge-shaped groove is formed in the space between the base and the movable base, the wedge-shaped groove is arranged along the front-back direction or the up-down direction, a wedge-shaped ejector matched with the wedge-shaped groove is arranged in the wedge-shaped groove, and the output end of the main driver is connected with the wedge-shaped ejector to drive the wedge-shaped ejector to move along the wedge-shaped groove.

Preferably, both side walls of the wedge-shaped groove are provided with guide members, and both sides of the wedge-shaped ejector member are provided with sliding seats matched with the guide members.

The utility model has the advantages that: use expander roll quantity to be 3, pipe fitting quantity is 7 as an example, the utility model discloses a theory of operation is: when the first pipe expanding operation and the second pipe expanding operation are carried out, the 3 connecting pieces are all located at working positions, all the core rods are connected with the movable seat together, then the main driver drives the movable seat to move rightwards, all the expanding heads are expanded by the pressing of the core heads, all the pipe fittings are expanded, and 6 pipes can be expanded by the two pipe expanding operations; during the expand tube operation of third time, wherein two connecting pieces move to inoperative position, make two core bars that correspond break away from with removing the seat, remove the seat and remove when moving the right, only stimulate one of them core bar and remove right, can only carry out the expand tube to the 7 th pipe fitting, avoid the condition of repeated expand tube to take place.

Drawings

Fig. 1 is a top view of the present invention;

fig. 2 is a front view of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a right side view of the backing plate;

fig. 5 is a structural view of the expansion rod and the left end of the core rod.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

Referring to fig. 1 to 5, an embodiment of the present invention provides a pipe expanding mechanism capable of selecting pipe expanding work according to the number of pipe fittings, which includes a frame 1, at least two hollow expanding rods 2 are arranged on the frame 1, the expanding rods 2 are arranged along the left and right direction, a core rod 3 capable of moving axially relative to the expanding rods 2 is arranged in each expanding rod 2, an expanding head 21 is arranged at the left end of each expanding rod 2, a core head 300 capable of expanding the expanding head 21 when the core rod 3 moves rightwards is arranged at the left end of the core rod 3, a movable seat 4 is arranged at the right side of the frame 1, the movable seat 4 is driven by a main driver 6 to move leftwards and rightwards, the right end of the core rod 3 extends out of the expanding rods 2 and extends to the movable seat 4, a connecting piece capable of connecting the core rod 3 and the movable seat 4 is arranged between the core rod 3 and the movable seat 4, the corresponding core rod 3 and the movable, the links, in the inactive position, disengage the corresponding mandrel 3 from the mobile seat 4, each of which is actuated by a separate secondary actuator 52 and can be switched between the active position and the inactive position.

Use 2 quantity of expander roll to be 3, pipe fitting quantity is 7 as an example, the utility model discloses a theory of operation is: during the first pipe expanding operation and the second pipe expanding operation, 3 connecting pieces are all in working positions, all the core rods 3 are connected with the movable seat 4, then the main driver 6 drives the movable seat 4 to move rightwards, all the expanding heads 21 are expanded by the pressing of the core heads 300, all the pipe fittings are expanded, and 6 pipes can be expanded through two pipe expanding operations; during the expand tube operation of third time, wherein two connecting pieces move to inoperative position, make two core bars 3 that correspond break away from with removing seat 4, remove seat 4 and when moving right, only stimulate one of them core bar 3 and move right, can only carry out the expand tube to the 7 th pipe fitting, avoid the condition of repeated expand tube to take place.

Referring to fig. 3, in an aspect of the present invention, the right side of the movable seat 4 has a pushing top surface 41, the core bar 3 is provided with a first stopper 31 located on the right side of the pushing top surface 41, and the connecting member is a movable cushion plate 51 capable of being inserted into and withdrawn from the space between the first stopper 31 and the pushing top surface 41. Remove and be provided with the guiding hole that can control the direction on the seat 4, each core bar 3 passes corresponding guiding hole and with remove seat 4 sliding fit, still be provided with on the core bar 3 can with the second stopper 32 that removes the left surface butt of seat 4. The thickness of the movable backing plate 51 is larger than the stroke of the expansion rod 2 during the pipe expanding operation. When the movable base plate 51 is inserted between the first stopper 31 and the pushing surface 41, the movable base plate 51 abuts against the first stopper 31, the corresponding core rod 3 can be driven to move rightwards when the movable base 4 moves rightwards, so that the expanding head 21 expands, and when the movable base 4 moves leftwards, the movable base 4 pushes the second stopper 32, so that the core rod 3 can be driven to move leftwards, so that the expanding head 21 is restored to the original state. The movable support 51 can be of a mobile or swing-type design, preferably being able to move up and down. In some embodiments of the present invention, the above-mentioned connecting member may also adopt a pin disposed on the movable seat 4, the core bar 3 is provided with a positioning hole matched with the pin, and the pin is driven by the auxiliary driver 52 to be inserted into or withdrawn from the positioning hole to connect or disconnect the core bar 3 and the movable seat 4.

Referring to fig. 4, further, the insertion end of the movable shim plate 51 is provided with a U-shaped notch 512 which is matched with the expansion bar 2. Due to the design, the contact area between the movable base plate 51 and the first limiting block 31 can be increased, and the first limiting block 31 is stressed uniformly.

Referring to fig. 3, the lower end of the movable plate 51 is an insertion end having a plug portion 511, the thickness of the plug portion 511 is smaller than the thickness of the middle portion of the movable plate 51, and the plate thickness is also the thickness of the middle portion of the plate. The plug portion 511 has a small thickness, so that the movable pad 51 can be easily inserted between the first stopper 31 and the pushing surface 41.

Alternatively, the sub-driver 52 is an air cylinder capable of driving the movable pad 51 to move up and down so that the movable pad 51 is inserted into or withdrawn from the space between the first stopper 31 and the pushing surface 41. And the air cylinder is adopted, so that whether the air cylinder works or not is conveniently controlled.

Referring to fig. 1, the rack 1 includes an expansion rod support 11 and a base 12, the base 12 and the movable base 4 are spaced by a certain distance, and a wedge-shaped slot 7 is formed in the space, the wedge-shaped slot 7 is arranged along the front-back direction or the up-down direction, a wedge-shaped ejector 8 matched with the wedge-shaped slot 7 is arranged in the wedge-shaped slot 7, and the output end of the main driver 6 is connected with the wedge-shaped ejector 8 to drive the wedge-shaped ejector 8 to move along the wedge-shaped slot 7. When the wedge-shaped ejector 8 moves, the movable seat 4 is driven to move back and forth so as to perform pipe expanding operation. Preferably, the main actuator 6 is a pneumatic cylinder.

In order to improve the smoothness of the action, two side walls of the wedge-shaped groove 7 are provided with guide pieces 91, and two sides of the wedge-shaped ejector 8 are provided with sliding seats 81 matched with the guide pieces 91. Preferably, the guide 91 is a T-shaped rail.

The included angle between the two guide rails is generally designed to be less than 20 degrees, so that the wedge-shaped ejecting piece 8 has a boosting effect when pushing the movable base 4 to move, and the energy conservation is facilitated.

The above is only the preferred embodiment of the present invention, as long as the technical solution of the purpose of the present invention is realized by the substantially same means, all belong to the protection scope of the present invention.

Claims

1. A pipe expanding mechanism capable of selecting pipe expanding work according to the number of pipe fittings comprises a machine frame (1), wherein at least two hollow expanding rods (2) are arranged on the machine frame (1), a core rod (3) capable of axially moving relative to the expanding rods is arranged in each expanding rod (2), an expanding head (21) is arranged at the left end of each expanding rod (2), a core head (300) capable of expanding the expanding head (21) when the core rod (3) moves rightwards is arranged at the left end of the core rod (3), a moving seat (4) is arranged at the right side of the machine frame (1), the moving seat (4) is driven by a main driver (6) to move leftwards and rightwards, the pipe expanding mechanism is characterized in that the right end of the core rod (3) extends out of the expanding rods (2) and extends to the moving seat (4), and a connecting piece capable of connecting each core rod (3) and the moving seat (4) is arranged between the core rod (3) and the moving seat (4), when the connecting pieces are in working positions, the corresponding core rods (3) are connected with the movable seat (4), when the connecting pieces are in non-working positions, the corresponding core rods (3) are separated from the movable seat (4), and each connecting piece is driven by an auxiliary driver (52) and can be switched between the working positions and the non-working positions.

2. The pipe expanding mechanism capable of selecting pipe expanding operation according to the number of pipes according to claim 1, wherein the right side of the movable seat (4) is provided with a push top surface (41), the core rod (3) is provided with a first stopper (31) positioned on the right side of the push top surface (41), and the connecting member is a movable backing plate (51) capable of being inserted into and withdrawn from a space between the first stopper (31) and the push top surface (41).

3. The pipe expanding mechanism capable of selecting pipe expanding operation according to the number of pipes as claimed in claim 2, wherein the thickness of the movable backing plate (51) is larger than the stroke of the expanding rod (2) during pipe expanding operation.

4. The pipe expanding mechanism capable of selecting pipe expanding operation according to the number of pipes of claim 2, wherein the insertion end of the movable backing plate (51) is provided with a U-shaped notch (512) matched with the expanding rod (2).

5. The pipe expanding mechanism capable of selecting pipe expanding operation according to the number of pipes as claimed in claim 2, wherein the lower end of the movable base plate (51) is an insertion end, the insertion end is provided with a plug part (511), and the thickness of the plug part (511) is smaller than that of the middle part of the movable base plate (51).

6. A pipe expanding mechanism capable of selecting pipe expanding operation according to the number of pipes according to claim 2, wherein said sub driver (52) is a cylinder capable of driving said movable base plate (51) to move up and down.

7. The pipe expanding mechanism capable of selecting pipe expanding operation according to the number of pipes as claimed in claim 1, wherein the rack (1) comprises an expanding rod support (11) and a base (12), the base (12) and the movable base (4) are spaced apart from each other by a certain distance to form a wedge-shaped groove (7), the wedge-shaped groove (7) is arranged along a front-back direction or an up-down direction, a wedge-shaped ejector (8) matched with the wedge-shaped groove (7) is arranged in the wedge-shaped groove (7), and the output end of the main driver (6) is connected with the wedge-shaped ejector (8) to drive the wedge-shaped ejector (8) to move along the wedge-shaped groove (7).

8. A pipe expanding mechanism capable of selecting pipe expanding operation according to the number of pipe fittings as claimed in claim 7, wherein the two side walls of the wedge-shaped groove are provided with guide members (91), and the two sides of the wedge-shaped ejector (8) are provided with sliding seats (81) matched with the guide members (91).