A PE pipe expanding device

Abstract

The utility model relates to the technical field of PE tubular product flaring, especially to a PE tubular product flaring device, including the workstation, the top fixed connection of workstation has the fender, the left side of fender is provided with flaring mechanism, the top fixed connection of fender has the bearing plate through bolt, the top of bearing plate is provided with the down -pressing mechanism, the top of workstation is provided with the bearing mechanism, the utility model has the beneficial effect that: through setting down -pressing mechanism and bearing mechanism, realized when flaring operation, can effect that pipe is fixed in position, the upper limit seat compresses the pipe upper end face, and the perpendicular constraint is formed with the lower limit seat, prevents the pipe warping, wherein the lower limit seat is used for placing the pipe, after the upper limit seat and the lower limit seat adhere, bracket force downward movement, when the upper limit seat resets, the reset spring reset spring force will drive bracket and pipe to reset the lower limit seat inner chamber to the outside, be convenient for taking the pipe after flaring.

Description

Technical Field

[0001] This utility model relates to the field of PE pipe flaring technology, and in particular to a PE pipe flaring device. Background Technology

[0002] PE pipes are designed for temperatures below 40°C and cannot be used for hot water transportation. PE is a highly crystalline, non-polar thermoplastic resin. In its original state, HDPE is milky white and, in thin sections, is somewhat translucent. PE has excellent resistance to most household and industrial chemicals, and is therefore widely used.

[0003] To meet the needs of pipe connection, functional adaptation or construction process, mechanical force is usually used to plastically deform the end of the PE pipe, forming a socket structure with an enlarged inner diameter and a maintained or changed outer diameter, which is the flaring operation of PE pipe.

[0004] However, after the PE pipe flaring equipment completes the flaring, the limiting seat used to limit the pipe is adapted to the pipe, and the pipe fits relatively in the limiting seat. In addition, the lack of an automatic pipe lifting structure makes it inconvenient to take out the flared pipe. Utility Model Content

[0005] To overcome the problem that existing PE pipe flaring equipment, after flaring, has a limiting seat that is compatible with the pipe and fits relatively close to it, coupled with the lack of an automatic pipe lifting structure, which makes it inconvenient to remove the flared pipe.

[0006] The technical solution of this utility model is as follows: a PE pipe flaring device, including a workbench, a protective plate fixedly connected to the top of the workbench, a flaring mechanism provided on the left side of the protective plate, a bearing plate fixedly connected to the top of the protective plate by bolts, a pressing mechanism provided on the top of the bearing plate, and a bearing mechanism provided on the top of the workbench. The bearing mechanism includes a load-bearing seat bolted to the top of the workbench, a lower limit seat bolted to the top of the load-bearing seat, a movable groove formed on the load-bearing seat and the lower limit seat, a bracket movably connected to the inner cavity of the movable groove, insertion holes formed on both sides of the bottom of the inner cavity of the movable groove, a plug rod movably inserted into the inner cavity of the insertion hole, and a return spring sleeved on the surface of the plug rod, the top of the return spring being fixedly connected to the bracket.

[0007] Preferably, the pressing mechanism works in conjunction with the bearing mechanism to position the pipe, and the flaring mechanism flares the pipe. The pipe is placed on the bracket, and the output end of the second hydraulic cylinder drives the connecting plate and the upper limit seat downwards. The upper limit seat then engages with the lower limit seat, thus fixing the pipe. Before the upper limit seat contacts the lower limit seat, it presses down on the bracket. During this downward pressing process, the insertion rod moves downwards within the insertion hole. During this process, the return spring is compressed. Because the grooves on the upper and lower limit seats are in contact with the pipe… Because the material is compatible, when the upper limit seat is pressed down, the pipe will press the bracket into the movable groove, and the pipe will eventually fit into the groove on the lower limit seat. After the flaring mechanism completes the flaring operation on the pipe, the upper limit seat resets. At this time, the compression force on the reset spring disappears, which will drive the bracket to reset. At the same time as the bracket resets, it will drive the pipe in the lower limit seat to move outward. Finally, the bracket will lift the pipe up. After the pipe is lifted up, there is a distance between the pipe and the groove on the lower limit seat, so it is convenient to remove the pipe from the lower limit seat.

[0008] Preferably, the flaring mechanism includes a first hydraulic cylinder, which is fixedly connected to one side of the guard plate. The output end of the first hydraulic cylinder passes through the guard plate and is fixedly connected to a push plate. The push plate is located on one side of the inner cavity of the guard plate and is fixedly connected to a flaring head by bolts.

[0009] Preferably, the flaring mechanism further includes a side plate, which is fixedly connected to the other side of the guard plate by bolts, and a baffle is fixedly connected to the surface of the side plate.

[0010] Preferably, the pressing mechanism includes a second hydraulic cylinder, which is fixedly connected to the top of the support plate. The output end of the second hydraulic cylinder passes through the support plate and is fixedly connected to a connecting plate. The bottom of the connecting plate is bolted to an upper limit seat.

[0011] Preferably, the bracket has limit slides on both sides, and the inner cavity of the limit slide is slidably connected to a limit slider. The side of the limit slider away from the inner cavity of the limit slide is fixedly connected to the inner wall of the lower limit seat.

[0012] Preferably, the flaring mechanism further includes a first limiting slide sleeve bolted to the guard plate, the inner cavity of the first limiting slide sleeve being slidably connected to a first limiting slide rod, one end of the first limiting slide rod penetrating into the inner cavity of the guard plate and being fixedly connected to the push plate, and the other end of the first limiting slide rod being fixedly connected to a first anti-detachment cap.

[0013] Preferably, the pressing mechanism further includes a second limiting sleeve bolted to the bearing plate, the inner cavity of the second limiting sleeve being slidably connected to a second limiting rod, one end of the second limiting rod penetrating the bearing plate and being fixedly connected to the connecting plate, and the other end of the second limiting rod being fixedly connected to a second anti-detachment cap.

[0014] The beneficial effects of this utility model are as follows: By setting up a pressing mechanism and a bearing mechanism, the pipe can be limited and fixed during the flaring operation. The upper limit seat presses against the upper end face of the pipe and forms a vertical constraint with the lower limit seat to prevent the pipe from warping. The lower limit seat is used to place the pipe. After the upper limit seat and the lower limit seat are in contact, the bracket moves downward under force. When the upper limit seat is reset, the reset force of the reset spring will drive the bracket and the pipe, thereby causing the inner cavity of the lower limit seat to reset outward, which makes it easier to pick up the flared pipe. Attached Figure Description

[0015] Figure 1 The diagram shown is a front view of the present invention. Figure 2 The diagram shown is a schematic representation of the flaring mechanism of this utility model. Figure 3 The diagram shown is a structural schematic of the pressing mechanism and the bearing mechanism of this utility model; Figure 4 The diagram shows a partial cross-section of the load-bearing seat and a schematic diagram of the bracket structure of this utility model. Figure 5 The diagram shown is a schematic representation of the flaring mechanism of this utility model.

[0016] Explanation of reference numerals in the attached figures: 1. Workbench; 2. Guard plate; 3. Flaring mechanism; 301. First hydraulic cylinder; 302. Push plate; 303. Flaring head; 304. Side plate; 305. Baffle; 306. First limiting sleeve; 307. First limiting rod; 308. First anti-detachment cap; 4. Bearing plate; 5. Pressing mechanism; 501. Second hydraulic cylinder; 502. Connecting plate; 503. Upper limit seat; 504. Second limiting sleeve; 505. Second limiting rod; 506. Second anti-detachment cap; 6. Bearing mechanism; 601. Load-bearing seat; 602. Lower limit seat; 603. Movable groove; 604. Bracket; 605. Insertion hole; 606. Insertion rod; 607. Return spring; 608. Limiting slide; 609. Limiting slider. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example

[0018] Please see Figures 1-5This utility model provides an embodiment: a PE pipe flaring device, including a workbench 1, a protective plate 2 fixedly connected to the top of the workbench 1, a flaring mechanism 3 provided on the left side of the protective plate 2, a bearing plate 4 fixedly connected to the top of the protective plate 2 by bolts, a pressing mechanism 5 provided on the top of the bearing plate 4, and a bearing mechanism 6 provided on the top of the workbench 1. The pressing mechanism 5 includes a second hydraulic cylinder 501, which is fixedly connected to the top of the support plate 4. The output end of the second hydraulic cylinder 501 passes through the support plate 4 and is fixedly connected to a connecting plate 502. The bottom of the connecting plate 502 is connected to an upper limit seat 503 by bolts. The supporting mechanism 6 includes a load-bearing seat 601 bolted to the top of the workbench 1, a lower limit seat 602 bolted to the top of the load-bearing seat 601, a movable groove 603 opened on the load-bearing seat 601 and the lower limit seat 602, a bracket 604 movably connected to the inner cavity of the movable groove 603, insertion holes 605 opened on both sides of the bottom of the inner cavity of the movable groove 603, a plug rod 606 movably inserted into the inner cavity of the insertion hole 605, and a return spring 607 sleeved on the surface of the plug rod 606. The top of the return spring 607 is fixedly connected to the bracket 604.

[0019] During operation, the pressing mechanism 5 and the bearing mechanism 6 work together to position the pipe. The flaring mechanism 3 flares the pipe, which is then placed on the bracket 604. The output end of the second hydraulic cylinder 501 drives the connecting plate 502 and the upper limit seat 503 downwards. The upper limit seat 503 then comes into contact with the lower limit seat 602, pressing the upper end face of the pipe and forming a vertical constraint with the lower limit seat 602 to prevent the pipe from warping. Before the upper limit seat 503 contacts the lower limit seat 602, it presses down on the bracket 604. During this downward pressing process, the insertion rod 606 moves downwards within the cavity of the insertion hole 605. During this process, the return spring 607 is compressed. The grooves on the upper limit seat 503 and the lower limit seat 602 are adapted to the pipe. Therefore, when the upper limit seat 503 is pressed down, the pipe will press down the bracket 604 into the movable groove 603, and the pipe will eventually fit into the groove on the lower limit seat 602. After the flaring mechanism 3 completes the flaring operation on the pipe, the upper limit seat 503 is reset. At this time, the compression force on the return spring 607 disappears, which will drive the bracket 604 to reset. When the bracket 604 resets, it will drive the pipe in the lower limit seat 602 to move outward. Finally, the bracket 604 lifts the pipe. After the pipe is lifted, there is a distance between the pipe and the groove on the lower limit seat 602, so it is convenient to remove the pipe from the lower limit seat 602. Example

[0020] Please see Figure 2 and Figure 5The difference from Embodiment 1 is that the flaring mechanism 3 includes a first hydraulic cylinder 301, which is fixedly connected to one side of the guard plate 2. The output end of the first hydraulic cylinder 301 passes through the guard plate 2 and is fixedly connected to a push plate 302. The push plate 302 is located on one side of the inner cavity of the guard plate 2 and is fixedly connected to a flaring head 303 by bolts.

[0021] The flaring mechanism 3 also includes a side plate 304, which is fixedly connected to the other side of the guard plate 2 by bolts, and a baffle 305 is fixedly connected to the surface of the side plate 304.

[0022] The flaring mechanism 3 also includes a first limiting slide sleeve 306 bolted to the guard plate 2. The inner cavity of the first limiting slide sleeve 306 is slidably connected to a first limiting slide rod 307. One end of the first limiting slide rod 307 passes through the inner cavity of the guard plate 2 and is fixedly connected to the push plate 302. The other end of the first limiting slide rod 307 is fixedly connected to a first anti-detachment cap 308.

[0023] The extension of the output end of the first hydraulic cylinder 301 provides flaring power, driving the push plate 302 and the flaring head 303 to move. The flaring head 303 contacts the end of the pipe to be flared, and the other end of the pipe abuts against the baffle 305. At this time, the upper limit seat 503 and the lower limit seat 602 are also in contact, thus ensuring the stability of the pipe. The first hydraulic cylinder 301 slowly applies force, and the flaring head 303 gradually enters the end of the pipe and completes the flaring operation. The first limiting slide rod 307 slides in the inner cavity of the first limiting sleeve 306 following the movement of the push plate 302, and is limited by the first anti-disengagement cap 308 to prevent slippage. The first limiting slide rod 307 and the first limiting sleeve 306 cooperate to eliminate the radial clearance of the piston of the first hydraulic cylinder 301 and improve the movement accuracy, thereby limiting the movement trajectory of the push plate 302. Example

[0024] Please see Figure 3 The difference from Example 1 is that, The pressing mechanism 5 also includes a second limiting sleeve 504 bolted to the bearing plate 4. The inner cavity of the second limiting sleeve 504 is slidably connected to a second limiting rod 505. One end of the second limiting rod 505 passes through the bearing plate 4 and is fixedly connected to the connecting plate 502. The other end of the second limiting rod 505 is fixedly connected to a second anti-detachment cap 506.

[0025] The second limiting slide rod 505 slides within the inner cavity of the second limiting slide sleeve 504 following the movement of the connecting plate 502, and is limited by the second anti-slip cap 506 to prevent slippage, thereby achieving the effect of limiting the movement trajectory of the connecting plate 502. Example

[0026] Please see Figure 4The difference from Embodiment 1 is that the bracket 604 has a limiting slide 608 on both sides, the inner cavity of the limiting slide 608 is slidably connected to the limiting slider 609, and the side of the limiting slider 609 away from the inner cavity of the limiting slide 608 is fixedly connected to the inner wall of the lower limiting seat 602.

[0027] The limiting slides 608 on both sides of the bracket 604 are used to slide the limiting slider 609 to ensure that the position of the bracket 604 will not shift when it is pressed down and reset. The bottom of the limiting slide 608 is through-cut, so the bracket 604 can be pulled out from the movable groove 603 while the limiting slide 608 and the limiting slider 609 are sliding, so as to replace the bracket 604 or the reset spring 607. The top of the bracket 604 can be inlaid with a rubber pad to reduce the indentation on the pipe surface. In this embodiment, the reset spring 607 can be made of stainless steel, and its two ends can be fixedly connected to the bottom of the bracket 604 and the inner cavity of the movable groove 603, respectively.

[0028] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A PE pipe flaring device, comprising a workbench (1), characterized in that: The top of the workbench (1) is fixedly connected to a guard plate (2), and a flaring mechanism (3) is provided on the left side of the guard plate (2). The top of the guard plate (2) is fixedly connected to a bearing plate (4) by bolts. The top of the bearing plate (4) is provided with a pressing mechanism (5), and the top of the workbench (1) is provided with a bearing mechanism (6). The bearing mechanism (6) includes a load-bearing seat (601) bolted to the top of the workbench (1), a lower limit seat (602) bolted to the top of the load-bearing seat (601), a movable groove (603) opened on the load-bearing seat (601) and the lower limit seat (602), a bracket (604) movably connected to the inner cavity of the movable groove (603), insertion holes (605) opened on both sides of the bottom of the inner cavity of the movable groove (603), a plug rod (606) movably inserted into the inner cavity of the insertion hole (605), and a return spring (607) sleeved on the surface of the plug rod (606). The top of the return spring (607) is fixedly connected to the bracket (604).

2. The PE pipe flaring device according to claim 1, characterized in that: The flaring mechanism (3) includes a first hydraulic cylinder (301), which is fixedly connected to one side of the guard plate (2). The output end of the first hydraulic cylinder (301) passes through the guard plate (2) and is fixedly connected to a push plate (302). The push plate (302) is located on one side of the inner cavity of the guard plate (2) and is fixedly connected to a flaring head (303) by bolts.

3. The PE pipe flaring device according to claim 1, characterized in that: The flaring mechanism (3) also includes a side plate (304), which is fixedly connected to the other side of the guard plate (2) by bolts, and a baffle (305) is fixedly connected to the surface of the side plate (304).

4. A PE pipe flaring device according to claim 3, characterized in that: The pressing mechanism (5) includes a second hydraulic cylinder (501), which is fixedly connected to the top of the bearing plate (4). The output end of the second hydraulic cylinder (501) passes through the bearing plate (4) and is fixedly connected to a connecting plate (502). The bottom of the connecting plate (502) is connected to an upper limit seat (503) by bolts.

5. A PE pipe flaring device according to claim 1, characterized in that: Both sides of the bracket (604) are provided with limiting slides (608), and the inner cavity of the limiting slide (608) is slidably connected to the limiting slider (609). The side of the limiting slider (609) away from the inner cavity of the limiting slide (608) is fixedly connected to the inner wall of the lower limiting seat (602).

6. A PE pipe flaring device according to claim 2, characterized in that: The flaring mechanism (3) further includes a first limiting sleeve (306) bolted to the guard plate (2). The inner cavity of the first limiting sleeve (306) is slidably connected to a first limiting rod (307). One end of the first limiting rod (307) extends through the inner cavity of the guard plate (2) and is fixedly connected to the push plate (302). The other end of the first limiting rod (307) is fixedly connected to a first anti-detachment cap (308).

7. A PE pipe flaring device according to claim 4, characterized in that: The pressing mechanism (5) further includes a second limiting sleeve (504) bolted to the bearing plate (4). The inner cavity of the second limiting sleeve (504) is slidably connected to a second limiting rod (505). One end of the second limiting rod (505) passes through the bearing plate (4) and is fixedly connected to the connecting plate (502). The other end of the second limiting rod (505) is fixedly connected to a second anti-detachment cap (506).

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