CN224222452U - Bulging integrated device with parallel double branch pipes - Google Patents

Abstract

This utility model discloses an integrated bulging device for parallel double-branch pipes, including a forming die, an upsetting component, and a moving punch. The forming die includes an upper die and a lower die for forming the pipe blank. When the upper die and the lower die are closed, they form an inner cavity that conforms to the shape of the double-branch pipe. The upsetting component includes a left pressure plate and a right pressure plate for upsetting the pipe blank in the left-right radial direction. The left pressure plate and the right pressure plate are disposed in the gap between the upper die and the lower die. The moving punch is disposed at both ends of the pipe blank for clamping the pipe blank and injecting pressure into the pipe blank. This utility model processes the pipe blank simultaneously using the upper die, the lower die, and the left and right pressure plates, reducing the number of dies and simplifying the operation, and integrating the pipe blank flattening pre-forming and the double-branch pipe hydraulic bulging process.

Description

Bulging integrated device with parallel double branch pipes

Technical Field

The utility model relates to the field of branch pipe pipeline manufacturing, in particular to a bulging integrated device for parallel double branch pipes.

Background

And the parallel double branch pipes are formed by adopting a hydraulic bulging technology, so that the integrated forming of the pipe fitting can be realized. Compared with the traditional stamping and welding process, the hydraulic bulging technology can reduce the weight of the part, improve the strength and rigidity of the part, ensure that the pipe fitting has no welding seam, and have the advantages of low production energy consumption, environment friendliness, energy conservation and the like.

However, since the parallel double branch pipes have two parallel branch pipes, the axis feeding is difficult, and thus the parallel double branch pipes need to be formed in a multi-process manner. The large-diameter tube blank is adopted, the tube blank is flattened firstly, and then the flattened tube blank is placed into a parallel double-branch-tube forming die. And finally, after die assembly, applying hydraulic pressure to the flattened tube blank to align the double branch tubes. The prior forming technology has the problems of more working procedures, lower forming efficiency and the like, so how to form the parallel double branch pipes efficiently is a technical problem which needs to be solved by the technicians in the field at present.

Disclosure of utility model

In order to solve the problems of more working procedures, lower forming efficiency and the like existing in the prior forming technology, the utility model provides a bulging integrated device with parallel double branch pipes, which is beneficial to reducing the number of dies and simplifying the working procedure operation, and realizes the integration of tube blank flattening preforming and branch pipe hydraulic bulging process.

The bulging integrated device comprises a forming die, a upsetting part and a movable punch, wherein the forming die comprises an upper die and a lower die for forming a tube blank, an inner cavity consistent with the shape of the double branch pipe is formed when the upper die and the lower die are closed, the upsetting part comprises a left side pressing plate and a right side pressing plate for upsetting the tube blank in the left-right radial direction, the left side pressing plate and the right side pressing plate are arranged in a gap between the upper die and the lower die, and the movable punch is respectively arranged at two ends of the tube blank and used for clamping the tube blank and filling pressure in the tube blank.

Preferably, the movable punch comprises a key groove plate, a polish rod, a movable top plate, a spring and a punch, wherein the key groove plate is in a frame shape, the polish rod is vertically arranged in the key groove plate, the spring is movably sleeved on the polish rod, the punch comprises a limiting end and a clamping end, the limiting end is movably sleeved on the polish rod and is positioned above the spring, the clamping end extends out of the key groove plate and is in sealing contact with a pipe blank port, and the movable top plate covers the key groove plate on one side of the limiting end of the punch.

Preferably, at least one of the punches is provided with an inflation hole.

Preferably, the movable top plate is provided with a vertical dovetail groove, the limiting end of the punch is provided with a dovetail key, and the dovetail groove and the dovetail key are installed in a matched mode and limit the punch to vertically move.

Preferably, the upper end and the lower end of the polish rod extend out of the key groove plate and are provided with threads, and the threads are matched with nuts to fix the polish rod on the key groove plate.

Preferably, the movable top plate is fixed to the key groove plate by a screw or a bolt.

The utility model simultaneously processes the tube blank through the upper die, the lower die, the left side pressing plate and the right side pressing plate, reduces the number of dies, simplifies the operation of working procedures, and realizes the integration of tube blank flattening preforming and double-branch hydraulic bulging process. Meanwhile, the device can process the tube blank with larger diameter into a double branch tube with smaller diameter, thereby reducing the processing cost.

Drawings

FIG. 1 is a front view of an bulging integrated apparatus of the present utility model incorporating side-by-side double offset tubes;

FIG. 2 is a perspective view of an bulging integrated apparatus of the present utility model with side-by-side double offset tubes;

FIG. 3 is an axial cross-sectional view of a moving punch assembly of the present utility model;

FIG. 4 is a front view of the double branch pipe manufacturing apparatus without the tube blank placed;

FIG. 5 is a front view of the double branch pipe manufacturing apparatus when a pipe blank is placed;

FIG. 6 is a front elevational view in full section of the bulging integrated apparatus of the present utility model with side-by-side double offset tubes prior to upsetting a tube blank;

FIG. 7 is a side cross-sectional view of the bulging integrated apparatus of the side-by-side double offset tube of the present utility model, prior to upsetting a tube blank;

FIG. 8 is a side cross-sectional view of the bulging integrated apparatus of the side-by-side double offset tube of the present utility model after upsetting a tube blank;

fig. 9 is a schematic diagram of the bulging integrated apparatus for parallel double branch pipes of the present utility model performing a path-press bulging of a tube blank.

Detailed Description

The utility model is described in further detail below with reference to the drawings and the detailed description, but does not limit the scope of protection and the application of the utility model.

The utility model relates to an bulging integrated device with parallel double branch pipes, which comprises a forming die, a upsetting part and a movable punch. The forming die comprises an upper die 1 and a lower die 2 for forming the tube blank A, and an inner cavity consistent with the shape of the double branch tube is formed when the upper die 1 and the lower die 2 are closed. The pipe blank A is a blank for processing parallel double-branch pipes, and the upper die 1 and the lower die 2 are dies for manufacturing the pipe blank A into the parallel double-branch pipes.

The upsetting means includes a left side press plate 3 and a right side press plate 4 for upsetting the left and right radial directions of the pipe blank a, the left side press plate 3 and the right side press plate being disposed in the gap of the upper die 1 and the lower die 2. The left punch is arranged on the left side of the tube blank A and used for radially pressing the left side of the tube blank A, and the right punch is arranged on the right side of the tube blank A and used for radially pressing the right side of the tube blank A.

The movable punches are respectively arranged at two ends of the tube blank A and used for clamping the tube blank A and filling pressure into the tube blank A. The movable punch comprises a key groove plate 5, a polished rod 6, a movable top plate 7, a spring 8 and a punch 9.

The key groove plate 5 is frame-shaped, the polish rod 6 is vertically arranged in the key groove plate 5, specifically, the upper end and the lower end of the polish rod 6 extend out of the key groove plate 5 and are provided with threads, the threads vertically fix the polish rod 6 on the key groove plate 5 through being matched with the nut 10, and the spring 8 is movably sleeved on the polish rod 6.

The punch 9 comprises a limiting end 91 and a clamping end 92, the limiting end 91 is provided with a through hole, and the through hole is movably sleeved on the polished rod 6 and is located above the spring 8. When the key slot plate is not in operation, the spring 8 jacks up the punch 9 to attach the punch 9 to the inner side of the top of the key slot plate 5, the punch 9 is positioned at the uppermost end, and the top end of the key slot plate 5 is used as a positioning point of the punch 9 by utilizing the characteristic. The clamping end 92 extends beyond the keyway plate 5 and is in sealing contact with the a port of the tube blank.

The movable top plate 7 covers the key groove plate 5 at one side of the limit end 91 of the punch 9 and is fixed on the key groove plate 5 through screws or bolts. The movable top plate 7 is provided with a vertical dovetail groove 71, the limiting end 91 of the punch 9 is provided with a dovetail key 94, and the dovetail groove 71 and the dovetail key 94 are matched and installed to limit the punch 9 to vertically move up and down. The movable top plate 7 is connected with a hydraulic cylinder, and the punch 9 is controlled by the hydraulic cylinder to move oppositely to clamp the pipe blank A and seal the two ends of the pipe blank A.

At least one punch 9 is provided with a filling hole, in the present application both punches 9 are provided with filling holes 93.

The application method of the utility model is as follows:

1. The pipe blank A is placed between the upper die 1 and the lower die 2, the punch 9 at the two ends of the pipe blank A moves towards each other to clamp the pipe blank A, and the two ends of the pipe blank A are sealed by the pressure of a hydraulic cylinder.

2. The left side pressing plate 3 and the right side pressing plate on the left side and the right side of the tube blank A move oppositely, the tube blank A is flattened in the left-right radial direction, and the left side pressing plate 3 and the right side pressing plate move back to the original position after the tube blank A is flattened to a preset value.

3. The upper die 1 is pressed down, the movable punch 9 is driven by the tube blank A to move down and compress the spring 8, the tube blank A is compressed by the upper die 1 and the lower die 2, hydraulic pressure is applied to the tube blank A through the filling hole 93 of the punch 9, and after the upper die 1 and the lower die 2 are attached, the hydraulic pressure is continuously increased, so that the tube blank A expands to form the double branch pipes.

4. After the bulging is finished, the upper die moves upwards, the punch 9 is jacked upwards through the spring 8 to reset, and the formed pipe fitting B is separated from the lower die 2. Subsequently, the hydraulic cylinder is retracted, the punches 9 on both sides are moved away from the tube B, and the tube B is removed.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related arts are included in the scope of the present utility model.

Claims (5)

1. The utility model provides an bulging integrated device of two branch pipes side by side, its characterized in that includes moulded die, upsetting part and removal drift, the moulded die is including being used for to the fashioned last mould of tube blank and bed die, go up mould and bed die form with the unanimous inner chamber of two branch pipe appearances when closed, upsetting part is including being used for right side clamp plate and the right side clamp plate that radial direction upsetted about the tube blank, left side clamp plate with the right side clamp plate sets up in the clearance of last mould and bed die, the removal drift sets up respectively at tube blank both ends for to the tube blank centre gripping is and to filling pressure in the tube blank, the removal drift includes key groove plate, polished rod, movable roof, spring and drift, the key groove plate is the frame shape, the polished rod is vertical to be set up in the key groove plate, the spring movable sleeve is established on the polished rod, the drift includes spacing end and holding end, spacing end movable sleeve is established on the polished rod, and is located the spring top, the holding end stretches out and with the key groove plate and with the movable roof fills pressure in the tube blank top one side of the sealing end.

2. A side-by-side double offset tube bulging integrated device according to claim 1, wherein at least one of said punches is provided with an inflation hole.

3. The bulging integrated device for the parallel double branch pipes according to claim 1, wherein the movable top plate is provided with a vertical dovetail groove, the limiting end of the punch is provided with a dovetail key, and the dovetail groove and the dovetail key are mounted in a matched mode and limit the punch to vertically move up and down.

4. The bulging integrated apparatus for a side-by-side double branch pipe according to claim 1, wherein the upper and lower ends of the polish rod are protruded out of the key groove plate and provided with threads, and the threads fix the polish rod on the key groove plate by being engaged with nuts.

5. The bulging integrated apparatus for side-by-side double offset tubes according to claim 1, wherein said movable top plate is fixed to the key groove plate by screws or bolts.