Production die for aluminum alloy forged pipe

Abstract

The utility model discloses a production die for an aluminum alloy forged pipe, relates to a production die for a forged pipe, and aims to solve the problems that the production efficiency is low and the cost cannot be effectively reduced when the forged pipe is produced in a traditional forging and drawing mode, so that enterprises of such free forging machines cannot produce the forged pipe in batches. The device comprises an upper punch seat, a processing punch and a lower die sleeve, the top end of the upper punch seat is installed on a die seat of a movable cross beam of the free forging machine, the connecting end of the machining punch is installed at the bottom end of the upper punch seat, the lower die sleeve is arranged on a workbench of the free forging machine below the machining punch, a conical hole is machined in the lower die sleeve, and a small-diameter port of the conical hole is formed in the bottom of the lower die sleeve. The utility model is applied to the field of forged tube processing and manufacturing.

Description

TECHNICAL FIELD

[0001] The utility model relates to a production mould of forged pipe, specifically relates to a production mould of aluminium alloy forged pipe, and the utility model is applied to the field of forged pipe processing and manufacturing. BACKGROUND

[0002] Aluminium alloy forged pipe is widely applied to high-pressure gas storage tanks, liquid storage tanks and the like in new energy market and light-weight scene. Market demand is large, and the annual consumption of various alloy forged pipes amounts to hundreds of thousands. Generally, special reverse extrusion machines or free forging machines with die forging function are needed to produce aluminium alloy forged pipe, and the equipment used must have a material ejection mechanism to meet the discharge function requirement to realize the ejection of forged pipe from the mould. Ordinary free forging machines cannot efficiently produce the forged pipe, and the production efficiency of the forged pipe produced by the traditional forging and drawing method is low. Moreover, cost cannot be effectively reduced, and thus the enterprises with only ordinary free forging machines cannot mass-produce forged pipe products. SUMMARY

[0003] The utility model aims at solving the problems of low production efficiency of the forged pipe produced by the traditional forging and drawing method, inability to effectively reduce cost and inability of the enterprises with free forging machines to mass-produce forged pipe, and further needs to provide a production mould of aluminium alloy forged pipe.

[0004] The utility model adopts the technical scheme that:

[0005] A production mould of aluminium alloy forged pipe, which comprises an upper punch holder, a machining punch and a lower die sleeve.

[0006] The top end of the upper punch holder is mounted on the mould holder of the movable cross beam of the free forging machine, the connecting end of the machining punch is mounted on the bottom end of the upper punch holder, the lower die sleeve is arranged on the workbench of the free forging machine below the machining punch, a tapered hole is machined in the lower die sleeve, and the small-diameter end of the tapered hole is arranged at the bottom of the lower die sleeve.

[0007] Further, it further comprises a falling disc, the falling disc is arranged below the lower die sleeve, a lower die sleeve placing hole matched with the lower die sleeve is machined on the upper end face of the falling disc, and the bottom end of the lower die sleeve is placed in the lower die sleeve placing hole of the falling disc.

[0008] Further, the lower die sleeve is arranged in clearance fit with the lower die sleeve placing hole of the falling disc.

[0009] Further, it further comprises a punch connecting bolt.

[0010] A blind hole is machined at the bottom end of the upper punch holder, a protrusion is machined at the top end of the machining punch, the protrusion at the top end of the machining punch is arranged in fit in the blind hole of the upper punch holder, and the upper punch holder and the machining punch are connected through the punch connecting bolt.

[0011] Further, the blind hole processed at the bottom end of the upper punch holder is a tapered hole, the protrusion processed at the top end of the processing punch is a tapered protrusion, the side wall of the tapered hole processed at the bottom end of the upper punch holder is symmetrically processed with two counterbores, the processing punch is horizontally processed with a through hole, the tapered protrusion of the processing punch is inserted into the tapered hole of the upper punch holder, the center lines of the two counterbores of the upper punch holder coincide with the center line of the through hole of the processing punch, and the punch connecting bolt is inserted into the two counterbores of the punch holder and the through hole of the processing punch, and the external threads of the punch connecting bolt are in threaded connection with the nut.

[0012] Further, the bottom end of the lower falling disc is processed with a processing punch through hole, and the processing punch through hole is in communication with the lower die sleeve placing hole.

[0013] The beneficial effects of the present application are as follows:

[0014] 1. The punch connecting bolt 1, the upper punch holder 2 and the lower falling disc 5 are made of 45# steel, and the processing punch 3 and the lower die sleeve 4 are made of 5CrMnMo / 5CrNiMo material, which effectively reduces the production cost. The upper punch holder 2 and the processing punch 3 are designed in a split manner, and the processing punch 3 is designed with a relatively short working zone. On the one hand, it is beneficial to reduce the manufacturing cost, and on the other hand, it can effectively separate the forged pipe from the punch when used with the lower falling disc 5.

[0015] 2. The lower die sleeve 4 is designed with a punching hole, and a taper of 1-3° is designed inside. When the punching hole is pressed down, the downward component force of the blank on the lower die sleeve 4 can fix the lower die sleeve 4 on the movable workbench of the free forging machine. At the same time, it is also convenient to take out the forged pipe from the lower die seat. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The schematic diagram of the overall structure of the present application is shown.

[0017] Figure 2 The vertical sectional view of the upper punch holder 2, the processing punch 3, the lower die sleeve 4 and the lower falling disc 5 is shown.

[0018] Figure 3 The Figure 1 The view of A is shown.

[0019] Figure 4 The schematic diagram of the force analysis of the lower die seat is shown. DETAILED DESCRIPTION

[0020] Specific implementation one: combined with Figures 1-3 The present embodiment is described, and the production mold for aluminum alloy forged pipe provided by the present embodiment comprises an upper punch holder 2, a processing punch 3, and a lower die sleeve 4.

[0021] The top end of the upper punch holder 2 is mounted on the die holder of the movable beam of the free forging machine, the connecting end of the processing punch 3 is mounted on the bottom end of the upper punch holder 2, and the lower die sleeve 4 is arranged on the workbench of the free forging machine below the processing punch 3. The lower die sleeve 4 is provided with a tapered hole, and the small diameter end of the tapered hole is arranged at the bottom of the lower die sleeve 4.

[0022] The taper of the tapered hole of the lower die sleeve 4 is 1° to 3°, so that when the processing punch 3 is pressed down, the downward force of the blank on the lower die sleeve 4 can fix the lower die sleeve 4 on the movable workbench of the free forging machine, and the forged pipe can be easily taken out from the lower die seat.

[0023] Specific implementation method two: in combination Figures 1-2 In this embodiment, the production mold for aluminum alloy forged pipes further comprises a falling disc 5, the falling disc 5 is arranged below the lower die sleeve 4, the upper end face of the falling disc 5 is provided with a lower die sleeve placing hole matched with the lower die sleeve 4, and the bottom end of the lower die sleeve 4 is placed in the lower die sleeve placing hole of the falling disc 5. The other methods are the same as those in the first specific implementation method.

[0024] Specific implementation method three: in combination Figures 1-2 In this embodiment, the production mold for aluminum alloy forged pipes is arranged in gap cooperation between the lower die sleeve 4 and the lower die sleeve placing hole of the falling disc 5. The other methods are the same as those in the first specific implementation method.

[0025] Specific implementation method four: in combination Figures 1-3 In this embodiment, the production mold for aluminum alloy forged pipes further comprises a punch connecting bolt 1.

[0026] The bottom end of the upper punch holder 2 is provided with a blind hole, the top end of the processing punch 3 is provided with a protrusion, the protrusion at the top end of the processing punch 3 is arranged in cooperation and is mounted in the blind hole of the upper punch holder 2, and the upper punch holder 2 and the processing punch 3 are connected through the punch connecting bolt 1. The other methods are the same as those in the first specific implementation method.

[0027] Specific implementation method five: in combination Figures 1-3 In this embodiment, the production mold for aluminum alloy forged pipes, the blind hole at the bottom end of the upper punch holder 2 is a tapered hole, the protrusion at the top end of the processing punch 3 is a tapered protrusion, the side wall of the tapered hole at the bottom end of the upper punch holder 2 is symmetrically provided with two counterbores, the protrusion of the processing punch 3 is horizontally provided with a through hole, the tapered protrusion of the processing punch 3 is inserted into the tapered hole of the upper punch holder 2, the center lines of the two counterbores of the upper punch holder 2 coincide with the center line of the through hole of the processing punch 3, the punch connecting bolt 1 is inserted into the two counterbores of the punch holder 2 and the through hole of the processing punch 3, and the external threads of the punch connecting bolt 1 are threadedly connected with the nut. The other methods are the same as those in the fourth specific implementation method.

[0028] Specific implementation six: combined Figures 1-2 In order to illustrate the present embodiment, the production mold of the aluminum alloy forged pipe in the present embodiment is provided with a machining punch through hole at the bottom end of the falling disc 5, and the machining punch through hole is communicated with the lower die sleeve placing hole. Other methods are the same as those in the specific implementation one.

[0029] The punch connecting bolt 1, the upper punch seat 2 and the falling disc 5 are made of 45# steel, and the machining punch 3 and the lower die sleeve 4 are made of 5CrMnMo / 5CrNiMo material.

[0030] Working principle

[0031] The production mold of the aluminum alloy forged pipe is used according to the following steps:

[0032] I. Install the upper punch seat 2 to the mold seat at the lower part of the movable cross beam of the free forging machine;

[0033] II. Place the lower die sleeve 4 on the workbench of the free forging machine, and the small diameter end of the tapered hole is arranged at the bottom of the lower die sleeve 4, and place the prepared blank in the lower die sleeve 4, and lubricate the inner wall of the lower die sleeve 4 with oil-based release agent.

[0034] III. Open the workbench of the free forging machine to the appropriate position, so that the lower die sleeve 4 is centered with the machining punch 3 of the upper punch seat 2.

[0035] IV. Place the machining punch 3 on the blank in the lower die sleeve 4, and fully lubricate the upper surface of the blank and the punch working area.

[0036] V. Lower the movable cross beam of the free forging machine, so that the connecting port of the upper punch seat 2 cooperates with the tapered head of the machining punch 3 to introduce the punch connecting bolt 1, so that the upper punch seat 2 and the machining punch 3 are connected, and the free forging machine starts to press to start producing the forged pipe.

[0037] VI. Stop when the machining punch 3 is punched to the workbench plane with a margin of 10-50mm, and raise the movable cross beam of the free forging machine to separate the upper punch seat 2 from the machining punch 3 from the forged pipe.

[0038] VII. Place the falling disc 5 on the center line of the movable workbench of the free forging machine, place the lower die sleeve 4 and the forged pipe in the lower die sleeve placing hole of the falling disc 5 as a whole, and align.

[0039] VIII. Open the movable workbench of the free forging machine to continue the centering of the machining punch 3 and continue to punch the forged pipe until the lower working area of the machining punch 3 is separated from the forged pipe.

[0040] IX. Remove the punch connecting bolt 1 to separate the upper punch seat 2 from the machining punch 3, and take out the punch from the lower part of the forged pipe.

[0041] X. Finally, the pipe is taken out of the lower die set 4, and the machining is completed.

[0042] The above specific implementation can be adjusted in different ways by those skilled in the art without departing from the principles and purposes of the present application, the protection scope of the present application is subject to the claims and is not limited by the above specific implementation, each implementation scheme within the scope is subject to the present application.

Claims

1. A production mold for aluminum alloy forged tubes, characterized in that: It includes an upper punch holder (2), a machining punch (3), and a lower die sleeve (4); The top of the upper punch seat (2) is installed on the mold seat of the movable crossbeam of the free forging machine. The connecting end of the processing punch (3) is installed on the bottom end of the upper punch seat (2). The lower die sleeve (4) is set on the worktable of the free forging machine below the processing punch (3). A tapered hole is machined inside the lower die sleeve (4). The small diameter port of the tapered hole is located at the bottom of the lower die sleeve (4).

2. The production mold for an aluminum alloy forged tube according to claim 1, characterized in that: It also includes a drop plate (5); the drop plate (5) is located below the lower mold sleeve (4), and the upper end surface of the drop plate (5) is machined with a lower mold sleeve placement hole that mates with the lower mold sleeve (4), and the bottom end of the lower mold sleeve (4) is placed in the lower mold sleeve placement hole of the drop plate (5).

3. The production mold for an aluminum alloy forged tube according to claim 1, characterized in that: The lower mold sleeve (4) and the lower mold sleeve placement hole of the lower drop plate (5) are fitted with a clearance.

4. The production mold for an aluminum alloy forged tube according to claim 1, characterized in that: It also includes punch connecting bolts (1); The bottom end of the upper punch seat (2) is machined with a blind hole, and the top end of the machining punch (3) is machined with a protrusion. The protrusion at the top end of the machining punch (3) is fitted and installed in the blind hole of the upper punch seat (2). The upper punch seat (2) and the machining punch (3) are connected by a punch connecting bolt (1).

5. The production mold for an aluminum alloy forged tube according to claim 4, characterized in that: The blind hole machined at the bottom of the upper punch seat (2) is a tapered hole, and the protrusion machined at the top of the punch (3) is a tapered protrusion. The side wall of the upper punch seat (2) with the tapered hole is symmetrically machined with two countersunk holes. The protrusion of the punch (3) is horizontally machined with a through hole. The tapered protrusion of the punch (3) is inserted into the tapered hole of the upper punch seat (2), and the center line of the two countersunk holes of the upper punch seat (2) coincides with the center line of the through hole of the punch (3). The punch connecting bolt (1) is inserted into the two countersunk holes of the punch seat (2) and the through hole of the punch (3), and the external thread of the punch connecting bolt (1) is threadedly connected to the nut.

6. The production mold for an aluminum alloy forged tube according to claim 1, characterized in that: The bottom end of the lower plate (5) is machined with a punch through hole, which is connected to the lower die sleeve placement hole.

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